Details, datasheet, quote on part number: ADP3020
| Part | ADP3020 |
| Category | Analog & Mixed-Signal Processing |
| Title | Power |
| Description | High Efficiency Notebook Computer Power Supply Controller |
| Company | Analog Devices |
| Datasheet | Download ADP3020 Datasheet |
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| Features, Applications |
High-Efficiency Notebook Computer Power Supply Controller ADP3020 FEATURES Wide Input Voltage Range: 25 V High Conversion Efficiency > 96% Integrated Current Sense--No External Resistor Required Low Shutdown Current: 7 A (Typical) Dual Synchronous Buck Controllers with Selectable PWM/Power-Saving Mode Operation Built-In Gate Drive Boost Circuit for Driving External N-Channel MOSFETs Two Independently Programmable Output Voltages Fixed V or Adjustable VIN�0.5 V) Fixed V or Adjustable VIN�0.5 V) Programmable PWM Frequency Integrated Linear Regulator Controller Extensive Circuit Protection Functions 38-Lead TSSOP Package APPLICATIONS Notebook Computers and PDAs Portable Instruments General Purpose DC-DC Converters The is a highly efficient dual synchronous buck switching regulator controller optimized for converting the battery or adapter input into the system supply voltages required in notebook computers. The ADP3020 uses a dual-mode PWM/Power Saving Mode architecture to maintain efficiency over a wide load range. The oscillator frequency can be programmed for 200 kHz, 300 kHz, or 400 kHz operation, or it can be synchronized to an external clock signal to 600 kHz. The ADP3020 provides accurate and reliable short circuit protection using an internal current sense circuit, which reduces cost and increases overall efficiency. Other protection features include programmable soft-start, UVLO, and integrated output undervoltage/overvoltage protection. The ADP3020 contains a linear regulator controller that is designed to drive an external P-channel MOSFET or PNP transistor. The linear regulator output is adjustable, and can be used to generate the auxiliary voltages required in many laptop designs. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 � Analog Devices, Inc., 2000 to +85C, VIN SS3 = INTVCC, INTVCC Load = 0 mA, ADP3020�SPECIFICATIONS REF Load = 0 mA, MODE 0 V, SYNC 5 V, unless otherwise noted.) Parameter INTERNAL 5 V REGULATOR Input Voltage Range 5 V Voltage Line Regulation Total Variation Switchover Voltage Switchover Hysteresis Undervoltage Lockout Threshold Voltage Undervoltage Lockout Hysteresis REFERENCE Output Voltage2 SUPPLY CURRENT Shutdown Current Standby Current Quiescent Current (PWM Mode) 5.5 V VIN 25 V Line, Temp AUXVCC from Low to High AUXVCC from High to Low INTVCC Falling5.5 V VIN V No Loads, MODE V No Loads, MODE 5 V SYNC = AGND SYNC = REF SYNC = INTVCC 200 ns SYNC = REF SYNC Input Frequency Range Input Low Voltage3 Input High Voltage3 Input Current POWER GOOD Output Voltage In Regulation Output Voltage Out of Regulation PWRGD PWRGD Trip Threshold PWRGD Hysteresis CPOR Pull-Up Current ERROR AMPLIFIER DC Gain Gain-Bandwidth Product Input Leakage Current MAIN SMPS CONTROLLERS Fixed 5 V Output Voltage PWM Mode Power-Saving Mode Fixed 3.3 V Output Voltage PWM Mode Power-Saving Mode 10 k Pull-Up 10 k Pull-Up 90% of Nominal Output Value FB5 Rising FB5 Falling CPOR 1.2 VParameter Adjustable Output Voltage PWM Mode Power-Saving Mode Output Voltage Adjustment Range3 Current Limit Threshold (PWM Mode) CLSET3 = Floating 0 V Current Limit Threshold (Power-Saving Mode) CLSET3 = Floating 0 V Power-Saving Mode Trip Threshold Soft-Start Current Soft-Start Turn-On Threshold Feedback Input Leakage Current Maximum Duty Cycle3 Transition Time (DRVH/DRVL) Rise Fall Logic Input Low Voltage Logic Input High Voltage LINEAR REGULATOR CONTROLLER Feedback Threshold SD2 Pull-Up Current SD2 Threshold Current Sinking Capability FB2 Input Leakage Current POWER-FAIL COMPARATOR PFI Input Threshold PFI Input Hysteresis PFI Input Current PFO High Voltage PFO Low Voltage FAULT PROTECTION Output Overvoltage Trip Threshold Output Undervoltage Lockout Threshold Symbol FB5, FB3 Conditions 5.5 V VIN 5.5 V VIN 5.5 V VIN 5.5 V VIN 5.5 V VIN 5.5 V VIN SS5, SS3 IFB DMAX 1.2 V VIN 5.5 V, SYNC = AGND CLOAD = 3000 pF, 10%�90% CLOAD = 3000 pF, 90%�10% MODE, SD, ADJ/FX3, ADJ/FX5 MODE, SD, ADJ/FX3, ADJ/FX5 Min Typ Max Unit V 1.2 V PFO from High to Low 10 k Pull-Up 10 k Pull-Up 5 V With Respect to Nominal Output With Respect to Nominal Output 0.7 20 NOTES 1 All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. 2 The reference's line-regulation error is insignificant. The reference cannot be used for external load. 3 Guaranteed by design, not tested in production. Specifications subject to change without notice. |
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