The Bel xRAH-03C1A0 modules are a series of non-isolated, step down dc/dc converters that operate from a nominal 3.3 Vdc source. These converters are available in a range of output voltages from 0.9 Vdc to 2.5 Vdc. It is packaged in a compact, overmolded package rated 3 A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and the efficiency for 2.5 Vdc output is typically 93% at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection.

Output Voltage 0.9 Vdc - 2.5 Vdc 2.5 Vdc 1.8 Vdc 1.5 Vdc 1.2 Vdc 0.9 Vdc Input Voltage 3.3 Vdc 3.3 Vdc 3.3 Vdc 3.3 Vdc 3.3 Vdc 3.3 Vdc Max. Output Current 3A Max. Output Power 2.7 W Typical Efficiency Part Number Surface Mount SRAH-03C120 SRAH-03C090 Part Number Vertical Mount VRAH-03C120 VRAH-03C090

Notes: 1. Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel Packaging", and "G" for "Tray Packaging". 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.

Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -55 �C Typ Max 125 �C Notes

Parameter Input Voltage Input Current (no load) Input Current (full load) VO=0.9 V Remote Off Input Current 14 mA Min 3V Typ Max V 110mA Notes

Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com

Parameter Input Reflected Ripple Current (pk-pk) Min Typ 50 mA Max 100 mA Notes With simulated source impedance of 500 nH, to 20 MHz; use uF/6.3 V capacitor with ESR=0.03 ohm max, at 100 kHz.

Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn on Voltage Threshold Turn off Voltage Threshold

Parameter Output Voltage Set Point VO=0.9 V Line Regulation VO=0.9 V Load Regulation VO=0.9 V Regulation Over Temperature to +85 �C) VO=0.9 V Output Current Limit Threshold Short Circuit Surge Transient 0.918 V Test conditions: Vin=3.3 V, Io= full load Min Typ Max Notes

Parameter Ripple and Noise (rms) VO=0.9 V Ripple and Noise (pk-pk) VO=0.9 V Turn on Time Overshoot at Turn on Output Capacitance Transient Response ~ 100% Max Load ~ 50% Max Load ~ 100% Max Load ~ 50% Max Load ~ 100% Max Load ~ 50% Max Load ~ 100% Max Load ~ 50% Max Load ~ 100% Max Load ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time 60 uS Test conditions: di/dt=0.5 A/us, Vin=3.3 V, without any external capacitor at the output. 20 mV Min Typ Max Notes