Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 Vdc Input 1.2 Vdc - 3.3 Vdc / 6 A Output
Input Specifications (continued)
Parameter Min Typ Max Notes
Input Current (no load) - 100 mA -
Remote Off Input Current - 5 mA -
Input Reflected Ripple Current
(pk-pk) - 60 mA -
Input Reflected Ripple Current
(rms) - 20 mA -
Tested with simulated source impedance
of 1uH, 5 Hz to 20 MHz, a 1000 uF/16 V
electrolytic capacitor, a 220 uF/10 V
Tantalum capacitor and 2.2 uF/50 V
ceramic capacitor at the input.
I2t Inrush Current Transient - - 0.04 A2s
Turn-on Voltage Threshold - 2.7 V 3.0 V
Turn-off Voltage Threshold 1.8 V 2.6 V -
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter Min Typ Max Notes
Output Voltage Set Point -2% Vo,set - 2% Vo,set Vin=5 V, 50% full load
Output Voltage Set Point
(-40 °C - 85 °C) -3% Vo,set - 3% Vo,set Over all operating input voltages,
resistive loads
Load Regulation - 0.4% Vo,set - Io=Io, min to 50% Io, max
Line Regulation - 0.3% Vo,set - Vin=Vin, min to Vin, max
Temperature Regulation - 0.4% Vo, set - Tref=Tamin to Tamax
Output Current 0 A - 6 A
Current Limit Threshold 7 A - 18 A
Short Circuit Surge Transient - 0.64 A2s -
Ripple and Noise (pk-pk) - 30 mV 50 mV
Ripple and Noise (rms) - 10 mV 20 mV
Tested with 0-20 MHz, with external
10 uF/10 V Tantalum capacitor, 220
uF/10 V Tantalum and 2.2 uF/50 V
ceramic capacitor at the output.
Turn on Time - 4 mS 8 mS
Overshoot at Turn on - - 3% Vo
External Load Capacitance - 100 uF/A -
Transient Response
50% ~ 100% Max Load - 100 mV -
Settling Time - 40 uS -
100% ~ 50% Max Load - 100 mV -
Settling Time
VO =1.2 -3.3 V
- 40 uS -
Test conditions:
di/dt=0.1 A/uS; Vin=5 V; with
external 10 uF/10 V Tantalum
capacitor, 220 uF/10 V Tantalum
capacitor and 2.2 uF/50 V
ceramic capacitor at the output.
Note: All specifications are typical at nominal input (Vin=5 V), full load at 25 °C unless otherwise stated.