SRAH-03L2A0 参数 Datasheet PDF下载

NON-ISOLATED DC/DC CONVERTERS

5 Vdc - 24 Vdc Input

0.9 Vdc - 3.3 Vdc/3 A, 5 Vdc/2 A Output

xRAH-03L2A0

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Non-Isolated

High Efficiency

High Power Density

Low Cost

RoHS Compliant

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Remote On/Off

Fixed Frequency

OCP/SCP

Rev.A

UL60950-1 Recognized (UL/cUL)

Description

The Bel xRAH-03L2A0 modules are a series of non-isolated, step down dc/dc converters that operate from a

nominal 12 Vdc source. These converters are available in an output voltage range from 0.9 Vdc to 5 Vdc. It is

packaged in a compact, overmolded package rated at 3 A (0.9 Vdc-3.3 Vdc) and 2 A (5 Vdc). 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 is typically 91% at full load. Typical features include remote

on/off, over current protection and short circuit protection.

Part Selection

Output

Voltage

0.9 V - 5.0 V

Input

Voltage

5 V - 24 V

Max. Output

Current

3A

Max. Output

Power

10 W

Typical

Efficiency

91%

Part Number

Surface Mount

SRAH-03L2A0

Part Number

Vertical Mount

VRAH-03L2A0

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.

Absolute Maximum Ratings

Parameter

Input Voltage (continuous)

Output Enable Terminal Voltage

Ambient Temperature

Storage Temperature

Min

-0.3 V

-0.3 V

-40

°C

-40

°C

Typ

-

-

-

-

Max

25 V

24 V

85

°C

125

°C

Notes

Input Specifications

Parameter

Input Voltage

V

O

=5.0 V

V

O

=3.3 V

V

O

=2.5 V

V

O

=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.9 V

Input Current (no load)

Input Current (full load)

Remote Off Input Current

Input Reflected Ripple Current

(pk-pk)

Input Reflected Ripple Current

(rms)

2

I t Inrush Current Transient

Turn on Voltage Threshold

Turn off Voltage Threshold

Min

9V

5V

5V

5V

5V

5V

5V

-

-

-

-

-

-

-

3.5 V

Typ

-

-

-

-

-

-

-

-

-

3 mA

200 mA

50 mA

0.05 A s

4.0 V

-

2

Max

24 V

24 V

24 V

18 V

15 V

12 V

9V

100 mA

2.5 A

10 mA

-

-

0.1 A s

-

4.9 V

2

Notes

With simulated source impedance of 500

nH, 5 Hz-20 MHz. Use one 2*47 uF/35 V

Tantalum capacitor and one 3.3 uF/50 V

ceramic capacitor at the output.

Bel Fuse Inc.

206 Van Vorst Street, Jersey City, NJ 07302

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Tel 201-432-0463

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Fax 201-432-9542

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www.belfuse.com