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

2.4 V-5.5 V Input

0.75 V-3.63 V/6 A Output

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

2.4 V

-

5.5 V

Vo, set

Input Current (full load)

Vo=3.3V

Vo=2.5V

Vo=1.8V

Vo=1.5V

Vo=1.2V

Vo=0.75V

-

-

-

-

-

-

-

-

-

-

-

-

4.73 A

3.66 A

4.09 A

4.31 A

3.57 A

2.40 A

Input Current (no load)

Vo=3.3 V

Vo=0.75 V

-

-

50 mA

25 mA

-

-

Remote Off Input Current

-

0.6 mA

-

Input Reflected Ripple Current (pk-pk)

-

120 mA

-

Input Reflected Ripple Current (rms)

-

35 mA

-

Tested with simulated source impedance

of 1 uH, 5 Hz to 20 MHz, one 1000 uF/25 V

AL capacitor and two 100 uF/ 10 V

Tantalum capacitor at the input.

I

-

-

0.04 A

Turn-on Voltage Threshold

-

2.05 V

2.4 V

Turn-off Voltage Threshold

1.8 V

2.0 V

-

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

-3% Vo,set

-

3% Vo,set

Over all operating input voltages,

resistive loads and temperature

conditions

Adjustment Range Selected by

External Resistor or Voltage

0.7525 V

-

3.63 V

Load Regulation

-

0.4% Vo,set

-

Io=Io, min to 50%Io, max

Line Regulation

-

0.3% Vo,set

-

Vin=50% Vin, min to Vin, max

Regulation Over Temperature

(-40

°C to +85 °C)

-

0.4% Vo,set

-

Tref=Ta, min to Ta, max

Output Current

0 A

-

6 A

Current Limit Threshold

9 A

-

18 A

Short Circuit Surge Transient

-

0.32 A

-

Ripple and Noise (pk-pk)

-

40 mV

70 mV

Ripple and Noise (rms)

-

10 mV

30 mV

Tested with 0-20 MHz, with 10 uF

Tantalum capacitor & 1 uF/10 V

ceramic capacitor at the output.

Turn on Time

-

6 mS

10 mS

Overshoot at Turn on

-

-

3%

Output Capacitance

ESR

≥ 1mohm

ESR

≥ 10mohm

0 uF

0 uF

-

-

1000 uF

3000 uF

Transient Response

50% ~ 100% Max Load

-

130 mV

-

Settling Time

-

25 uS

-

100% ~ 50% Max Load

-

130 mV

-

Settling Time

3.63 V

-

25 uS

-

di/dt=2.5 A/uS; Vin=5 V; and with

10 uF Tantalum capacitor &

1 uF/10 V TDK ceramic capacitor

at the output

Note