UC2832-EP Datasheet by Texas Instruments

Datasheet Feedback/Errors

U I: ] I: ] temperature range. ans includes but is not limrted to Highly +2v REF[ 4 ta] Accelerated Stress Test (HAST) or biased 55/85, temperature GND[ 5 ,2] cycle, autoclave or unorased HAST, eiectromrgratron, bond . rrrtermetaihc tire, and mold compound hte. Such ouahtrcatron L°9'° Mama 6 H 1 testing should not he viewed as justityino use at this component L'm" [ 7 ‘0 J peyond speciried pertormanoe and environmental limits. Source [ a 9 ] description The U02832 series pl precision linear regulators include all the control functions requ low dropout linear regulators. Additionally, they feature an innovative dutyrratio curren provides peak load capability while limiting the average power dissipation ol the extern lault conditions. When the load current reaches an accurately programmed threshold enabled, which switches the regulator's pass device all and on at an externally program the onetime of the pass element, the output current is limited to a value slightly high oi the dutyrratio timer. The constantrcurrentrlimit is programmable on the U02832 to a during the onetime oi the pass device. With dutyrratio control, high initial load de protection may both be accommodated without extra heat sinking or loldback current I timer pin is grounded, the dutyrratio timer is disabled, and the IC operates in constant regulating made. These lC‘s include a2 Volt (:1 “/e) reference, error amplifier, UVLO, and a high currentd and sink outputs, allowing the use of either NPN pr PNP external pass transistors. S by the inclusion of underrvoltage lockout (UVLO) and thermal shutdown. ORDERING INFORMATION* ORDEHABLE TOP- TA PACKAGE§ PART NUMBER MAR ~40“C lo 105%: SOP 7 DW Tape and reel UCZEGZTDWREF U028 ~40“C lo 105%: SOP 7 DW Tube UCZEGZTDWEP U028 1 Package drawings, standard packing quantrtres, thermal data, symbolizaticn, and PCB guidelines are available at www.ti,ccm/sc/package, Please be aware that an important notice concerning availability, standard warranty, and u Texas instruments semrconouctor products and disclaimers thereto appears at the end or this dat mmmiott mu n to current a. M pd or. me Copyright 20 somemaniﬁrroerprmlué. , was” new m. m...“ . TEXAS INSTRUMENTS POST OFFICE cox $55303 - DALLAS. TEXAS 75265

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DControlled Baseline

– One Assembly/Test Site, One Fabrication

Site

DExtended Temperature Performance of

–40°C to 105°C

DEnhanced Diminishing Manufacturing

Sources (DMS) Support

DEnhanced Product Change Notification

DQualification Pedigree†

DPrecision 1% Reference

DOver-Current Sense Threshold Accurate to

DProgrammable Duty-Ratio Over-Current

Protection

†Component qualification in accordance with JEDEC and industry

standards to ensure reliable operation over an extended

temperature range. This includes, but is not limited to, Highly

Accelerated Stress Test (HAST) or biased 85/85, temperature

cycle, autoclave or unbiased HAST, electromigration, bond

intermetallic life, and mold compound life. Such qualification

testing should not be viewed as justifying use of this component

beyond specified performance and environmental limits.

D4.5 V to 36 V Operation

D100 mA Output Drive, Source or Sink

DUnder-Voltage Lockout

DAdjustable Current Limit to Current Sense

Ratio

DSeparate +VIN terminal

DProgrammable Driver Current Limit

DAccess to VREF and E/A(+)

DLogic-Level Disable Input

description

The UC2832 series of precision linear regulators include all the control functions required in the design of very

low dropout linear regulators. Additionally, they feature an innovative duty-ratio current limiting technique which

provides peak load capability while limiting the average power dissipation of the external pass transistor during

fault conditions. When the load current reaches an accurately programmed threshold, a gated-astable timer is

enabled, which switches the regulator’s pass device off and on at an externally programmable duty-ratio. During

the on-time of the pass element, the output current is limited to a value slightly higher than the trip threshold

of the duty-ratio timer. The constant-current-limit is programmable on the UC2832 to allow higher peak current

during the on-time of the pass device. With duty-ratio control, high initial load demands and short circuit

protection may both be accommodated without extra heat sinking or foldback current limiting. Additionally, if the

timer pin is grounded, the duty-ratio timer is disabled, and the IC operates in constant-voltage/constant-current

regulating mode.

These IC’s include a 2 Volt (±1%) reference, error amplifier, UVLO, and a high current driver that has both source

and sink outputs, allowing the use of either NPN or PNP external pass transistors. Safe operation is assured

by the inclusion of under-voltage lockout (UVLO) and thermal shutdown.

ORDERING INFORMATION‡

TAPACKAGE§ORDERABLE

PART NUMBER TOP-SIDE

MARKING

–40°C to 105°CSOP – DW Tape and reel UC2832TDWREP UC2832TEP

–40°C to 105°CSOP – DW Tube UC2832TDWEP UC2832TEP

‡Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DW PACKAGE

(TOP VIEW)

+VIN

Comp/Shutdown

E/A(+)

+2V REF

GND

Logic Disable

Limit

Source

Current Sense(+)

Current Sense(–)

Timer RC

VADJ

Sink

E/A(–)

NC = No Connect

.zv Lngm comp/ REF mum. shutdown \_ *9 TEXAS INSTRUMENTS 2 POST OFFICE on $55303 ' DALLAS IEXAS 75285

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

block diagram

Ordering Information

UC 2

PACKAGE

DW = Plastic SOIC

PRODUCT OPTION

TAPE and REEL INDICATOR

283 EP

ENHANCED PLASTIC INDICATOR

TEMPERATURE INDICATOR

T =–40_C to 105_C

Su \y current A ‘D A Mn“. TJ ‘DRIVER mmpmn.» “um Am lmer oﬂsel {P TEXAS INSTRUMENTS

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†‡

VIN supply voltage 40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Driver output current (sink or source), IO 450 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Driver sink to source voltage 40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRC pin voltage –0.3 V to 3.2 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Other input voltages –0.3 V to supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating jucntion temperature range, TJ–55_C to 150_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg –65_C to 150_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds 300_C. . . . . . . . . . . . . . . . . . . . . . .

†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡Unless otherwise indicated, voltages are reference to ground and currents are positive into and negative out of the specified terminals.

electrical characteristics, TA = –40_C to 105_C for the UC2832T-EP, +VIN = 15 V, Driver sink = +VIN,

C/S(+) voltage = +VIN, and TA = TJ (unless otherwise stated)

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Input Supply

+VIN = 6 V 6.5 10

Supply current +VIN = 36 V 9.5 15 mA

Su ly

current

Logic Disable = 2 V 3.3 10

Reference Section

Out

ut voltage

IDRIVER =10mA

TJ = 25_C1.98 2 2.02

Output voltage IDRIVER = 10 mA TJ = Full range 1.96 2 2.04 V

Load regulation voltage IOUT = 0 to 10 mA –10 –5 10 mV

Line regulation +VIN = 4.5 V to 36 V, IDRIVER = 10 mA 0.033 0.5 mV/V

Under-voltage lockout threshold 3.6 4.5 V

Logic Disable Input

Threshold voltage 1.3 1.4 1.5 V

Input bias current Logic Disable = 0 V –5–1 0.1 µA

Current Sense Section

Com

arator offset

TJ = 25_C95 100 105

Comparator offset TJ = Full range 93 100 107 mV

VADJ = Open 110 135 170

Amplifier offset VADJ = 1 V 180 235 290 mV

Am lifier

offset

VADJ = 0 V 250 305 360

Input bias current VCM = +VIN 65 100 135 µA

Input offset current VCM = +VIN –10 10 µA

Amplifier CMRR VCM = 4.1 V to +VIN + 0.3 V 80 dB

Transconductance ICOMP = "100 µA65 ms

VADJ input current VADJ = 0 V –10 –1µA

AVOL VOH VOL (‘OH V TEXAS INSTRUMENTS

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics, TA = –40_C to 105_C for the UC2832T-EP, +VIN = 15 V, Driver sink = +VIN,

C/S(+) voltage = +VIN, and TA = TJ (unless otherwise stated)

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Timer

Inactive leakage current C/S(+) = C/S(–) = +VIN, TRC pin = 2 V 0.25 1 µA

Active pull-up current C/S(+) = +VIN, C/S(–) = +VIN – 0.4 V,

TRC pin = 0 V –345 –270 –175 µA

Duty ratio (See Note 1) ontime/period, RT = 200 kΩ, CT = 0.27 µF4.8 %

Period (See Notes 1 and 2) ontime + offtime, RT = 200 kΩ, CT = 0.27 µF36 ms

Upper trip threshold (Vu) 1.8 V

Lower trip threshold (Vl) 0.9 V

Trip threshold ratio Vu / Vl2.0 V/V

Error Amplifier Section

Input offset voltage VCM = VCOMP = 2 V –8 8 mV

Input bias current VCM = VCOMP = 2 V –4.5 –1.1 µA

Input offset current VCM = VCOMP = 2 V –1.5 1.5 µA

Open loop voltage gain (AVOL) VCOMP = 1 V to 13 V 50 70 dB

Common mode rejection ratio (CMRR) VCM = 0 V to +VIN – 3 V 60 80 dB

PSRR VCM = 2 V, +VIN = 4.5 V to 36 V 90 dB

Transconductance ICOMP = "10 µA4.3 ms

High-level output voltage (VOH) ICOMP = 0, Volts below +VIN 0.95 1.3 V

Low-level output voltage (VOL) ICOMP = 0 4.5 0.7 V

Output high current (IOH) VCOMP = 2 V –700 –500 –100 µA

Output low current (I )

V2V

C/S(–) = +VIN 100 500 700 µA

Output low current (IOL) VCOMP = 2 V C/S(–) = +VIN – 0.4 V 2 6 mA

NOTES: 1. These parameters are first-order supply-independent, however, both may vary with supply for +VIN less than about 4 V. This supply

variation will cause a slight change in the timer period and duty cycle, although a high off-time/on-time ratio will be maintained.

2. With recommended RT value of 200 kΩ, TOFF ≈ RT CT * ln(Vu/Vl) "10%.

.. n I 4 TJ . U U VIN VI TA : 25‘s 25 Mamum me,“ some wouage CampensaIlonJShutdown : 0 v‘ ISOURCE :100 uA, 1,5 (+)VIN : 3 V ThermaI shmdawn 160 NOTES. 3. The InlemaI cunenI Ilmmng voltage has a Iemperature dependence 0| approximately 72.0 mV/“C orezaan ppm/’ 2.4 0 sense resusmr has a Iemperature dependence DI approxImately +1500 ppm/‘0, APPLICATION AND OPERATION INFORMATION 0.02 7V ()7 VDUT Lo vm TIPCIGA / 5v 12V C HI VIN IauxI ‘ 1 I I I I I INMAEZE I I 3k ._ I sosmv 70 0MP I I In I 135mV :10“: I VADJ ﬁ‘v j‘ ITI I I I I —I|I'— I IDOmV ‘ucwaz , *5 TEXAS INSTRUMENTS 9057 omca aox $55303 - DALLAS IEXAS 752s5

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics, TA = –40_C to 105_C for the UC2832T-EP, +VIN = 15 V, Driver sink = +VIN,

C/S(+) voltage = +VIN, and TA = TJ (unless otherwise stated)

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Driver Section

Maximum current

Driver limit and source pins common

TJ = 25_C200 300 400

Maximum current Driver limit and source pins common TJ = Full range 100 300 450 mA

Limiting voltage Driver limit to source voltage at current limit,

ISOURCE = –10 mA, TJ = 25_C, See Note 3 0.72 V

Internal current sense resistance TJ = 25_C, See Note 3 2.4 Ω

Driver sink = +VIN – 1 V –800 –300 –100

Pull-up current at driver sink Compensation/Shutdown = 0.4 V +VIN = 36 V,

Driver sink = 35 V –1000 –300 –75 µA

Pull-down current at driver source Compensation/Shutdown = 0.4 V,

Driver source = 1 V 150 300 700 µA

Saturation voltage sink to source Driver source = 0 V, Driver current = 100 mA 1.5 V

Maximum source voltage Driver sink = +VIN, Driver current = 100 mA,

Volts below +VIN 3 V

UVLO sink leakage +VIN = C/S(+) = C/S(–) = 2.5 V, Driver sink = 15 V,

Driver source = 0 V, TA = 25_C25 µA

Maximum reverse source voltage Compensation/Shutdown = 0 V, ISOURCE = 100 µA,

(+)VIN = 3 V 1.6 V

Thermal shutdown 160 _C

NOTES: 3. The internal current limiting voltage has a temperature dependence of approximately –2.0 mV/_C, or –2800 ppm/_C. The internal

2.4 Ω sense resistor has a temperature dependance of approximately +1500 ppm/_C.

APPLICATION AND OPERATION INFORMATION

Figure 1. NPN Pass (Medium Power, Low Drop-Out Regulator)

*9 TEXAS INSTRUMENTS

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION AND OPERATION INFORMATION

Estimating Maximum Load Capacitance

For any power supply, the rate at which the total output capacitance can be charged depends on the maximum

output current available and on the nature of the load. For a constant-current current-limited power supply, the

output will come up if the load asks for less than the maximum available short-circuit limit current.

To ensure recovery of a duty-ratio current-limited power supply from a short-circuited load condition, there is

a maximum total output capacitance which can be charged for a given unit ON time. The design value of ON

time can be adjusted by changing the timing capacitor. Nominally, TON = 0.693 x 10 kΩ x CT.

Typically, the IC regulates output current to a maximum of IMAX = K x ITH, where ITH is the timer trip-point current,

and

K+Current Sense Amplifier Offset Voltage

100 mA

and is variable from 1.35 to 3.05 with VADJ.

For a worst-case constant-current load of value just less than ITH, CMAX can be estimated from:

CMAX +ǒK*1

TH Ǔ ǒTON

VOUTǓ

where VOUT is the nominal regulator output voltage.

For a resistive load of value RL, the value of CMAX can be estimated from:

CMAX +TON

RL 1

Ȳǒ1*VOUT

K ITH RLǓ–1

320

280

260

240

220

200

180

160

300

140

120

Offset Voltage – mV

0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.52.25

VADJ (Pin 11) – V

Figure 2. Current Sense Amplifier Offset Voltage vs VADJ

internal elsm c/S(-) 2.7V Flam + C/S Comp roomv 1k 10k , VADJ V05 I To m \égMﬁp Shutdown 100% ‘OOM ? To Tlmev To EM 7 Inpur override 1.8V/0.95V Figure 3. Timer Function Figure 4. Current Sense Input Configuration Overload _ r Outpul VSENSE— / \ 135mVa \ Current 100mV$ \ Io (nomi 7 CT , UTH Volta e g ’LTH Vo (nom) 7 0MP“i Roi ICL Voltage i =2To~ ionou iToN ionoNi *5 TEXAS INSTRUMENTS POST OFFICE on $55303 ' DALLAS IEXAS 75285 7

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION AND OPERATION INFORMATION

Figure 3. Timer Function Figure 4. Current Sense Input Configuration

NOTE A: VOS = 205 mV to 35 mV

Figure 5. Load Current, Timing Capacitor Voltage, and Output Voltage of the Regulator

Under Fault Conditions

UCXBBZ Error Ampliﬁer AVOL vs Frequency and cc 120 me E no u ‘7 so 6 40 5 20 a -20 1E+00 15m 1502 i503 1504 15m 1505 1E+07 Frequency , (Hz) UCanz Error Amplifier Tmnscunduclance and Phase vs Frequency Gm mmha Phase smn 1225 TV n 100 ism 200 m me man mono mums/r (kHzi AVOL - (as) UCxaaZ Current Sense Ampliﬁer AVOL vs Frequency and co we so 60 40 20 a 720 an o 0001 cm 01 I ID 100 um mono Frequency , (Hz) UCXBSZ Current Sense Amplilier Transoonducoanoe and Phase vs Fvequency m Gm mmha Phase smM imam 50 um i50 zoo wow mm) m we Frequency , 41(sz *9 TEXAS INSTRUMENTS

UC2832-EP

PRECISION LOW DROPOUT LINEAR CONTROLLER

SGLS147A – JANUARY 2003 – REVISED MARCH 2003

8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION AND OPERATION INFORMATION

Figure 6. UCx832 Error Amplifier Figure 7. UCx832 Current Sense Amplifier

Figure 8. UCx832 Error Amplifier Figure 9. UCx832 Current Sense Amplifier

I TEXAS INSTRUMENTS Samples

PACKAGE OPTION ADDENDUM

www.ti.com 10-Dec-2020

Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status

(1)

Package Type Package

Drawing Pins Package

Qty Eco Plan

(2)

Lead finish/

Ball material

(6)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

(4/5)

Samples

UC2832TDWEP ACTIVE SOIC DW 16 40 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 105 UC2832TEP

(1) The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance

do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may

reference these types of products as "Pb-Free".

RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.

Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based

flame retardants must also meet the <=1000ppm threshold requirement.

(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two

lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information

provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

OTHER QUALIFIED VERSIONS OF UC2832-EP :

I TEXAS INSTRUMENTS

PACKAGE OPTION ADDENDUM

www.ti.com 10-Dec-2020

Addendum-Page 2

•Catalog: UC2832

NOTE: Qualified Version Definitions:

•Catalog - TI's standard catalog product

l TEXAS INSTRUMENTS T - Tube height| L - Tube length l ,g + w-Tuhe _______________ _ ______________ width 47 — B - Alignment groove width

TUBE

*All dimensions are nominal

Device Package Name Package Type Pins SPQ L (mm) W (mm) T (µm) B (mm)

UC2832TDWEP DW SOIC 16 40 507 12.83 5080 6.6

PACKAGE MATERIALS INFORMATION

www.ti.com 5-Jan-2022

Pack Materials-Page 1

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UC2832-EP Datasheet by Texas Instruments

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