VRAH-01H1A0 datasheet(2/7 Pages) BEL

Part #	VRAH-01H1A0

Description	NON-ISOLATED DC/DC CONVERTER 4.5 V-32 V Input 1.2 V-3.3 V/1 A Output

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Manufacturer	BEL [Bel Fuse Inc.]

Direct Link	http://www.belfuse.com

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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 CONVERTER

4.5 V-32 V Input

1.2 V-3.3 V/1 A Output

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

VO=3.3 V

VO=2.5 V

VO=1.8 V

VO=1.5 V

VO=1.2 V

3.234 V

2.450 V

1.764 V

1.470 V

1.176 V

3.3 V

2.5 V

1.8 V

1.5 V

1.2 V

3.366 V

2.550 V

1.836 V

1.530 V

1.224 V

Test conditions:

Vin=20 V, Io=50% full

load

Line Regulation

VO=3.3 V

VO=2.5 V

VO=1.8 V

VO=1.5 V

VO=1.2 V

-

±3 mV

±2 mV

±1 mV

±6 mV

±5 mV

±4 mV

±3 mV

±2 mV

Load Regulation

VO=3.3 V

VO=2.5 V

VO=1.8 V

VO=1.5 V

VO=1.2 V

-

±3 mV

±2 mV

±1 mV

±6 mV

±5 mV

±4 mV

±3 mV

±2 mV

Regulation Over Temperature

(-40

°C to +85 °C)

-

±10 mV

±20 mV

Output Current

0 A

-

1 A

Current Limit Threshold

2 A

-

3 A

Short Circuit Surge Transient

-

0.02 A

2s

0.1 A

2s

Ripple and Noise (rms)

-

6 mV

10 mV

Ripple and Noise (pk-pk)

-

60 mV

100 mV

Test condition: 0-20 MHz

BW

Turn on Time

-

6 mS

30 mS

Overshoot at Turn on

-

2%

5%

Output Capacitance

0 uF

-

400uF

Transient Response

Overshoot

-

80 mV

120 mV

50% ~ 100%

Max Load

Settling Time

-

150 uS

200 uS

Overshoot

-

80 mV

120 mV

100% ~ 50%

Max Load

Settling Time

VO=3.3 V

-

150 uS

200 uS

Overshoot

-

70 mV

110 mV

50% ~ 100%

Max Load

Settling Time

-

120 uS

160 uS

Overshoot

-

70 mV

110 mV

100% ~ 50%

Max Load

Settling Time

VO=2.5 V

-

120 uS

160 uS

Overshoot

-

60 mV

100 mV

50% ~ 100%

Max Load

Settling Time

-

100 uS

130 uS

Overshoot

-

60 mV

100 mV

100% ~ 50%

Max Load

Settling Time

VO=1.8 V

-

100 uS

130 uS

Overshoot

-

60 mV

100 mV

50% ~ 100%

Max Load

Settling Time

-

100 uS

130 uS

Overshoot

-

60 mV

100 mV

100% ~ 50%

Max Load

Settling Time

VO=1.5 V

-

100 uS

130 uS

Overshoot

-

60 mV

100 mV

50% ~ 100%

Max Load

Settling Time

-

100 uS

130 uS

Overshoot

-

60 mV

100 mV

100% ~ 50%

Max Load

Settling Time

VO=1.2 V

-

100 uS

130 uS

Test conditions:

di/dt = 0.5 A/uS;

Vin = 20 V

Note:

All specifications are typical at 20 V input, full load at 25 °C unless otherwise stated.

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