SRBA-06F2ALG Datasheet SRBA-06F2A0G, SRBA-06F2ALG | P1-P3

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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output

• Non-Isolated • Under-voltage Lockout (UVLO)

• High Efficiency • OCP/SCP

• High Power Density • Wide Input

• Excellent Thermal Performance • Wide Trim Range

• Low Cost • Active Low/High (option)

• Remote On/Off

• Flexible Output Voltage

Sequencing

• Able to Sink & Source Current

• Fixed Frequency (300 kHz)

Description

The Bel SRBA-06F2Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 A of output

current with full load efficiency of 93% at 3.3 Vdc output. These modules provide precisely regulated voltage

programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (2.4 Vdc - 5.5

Vdc). These modules have a sequencing feature that enables designers to implement various types of output

voltage sequencing when powering multiple voltages on a board. The open-frame construction and small

footprint enable designers to develop cost and space-efficient solutions. Standard features include remote

On/Off, over current protection, short circuit protection, wide input, and programmable output voltage.

Part Selection

Output Voltage Input

Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Model Number

Active Low

Model Number

Active High

0.75 V - 3.63 V

2.4 V - 5.5 V 6 A 21.8 W 93% SRBA-06F2AL SRBA-06F2A0

Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage.

2. Add “G” to the end of the Model Number to indicate Tray Packaging.

3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.

Absolute Maximum Ratings

Parameter Min Typ Max Notes

Input Voltage (continuous) -0.3 V - 5.8 V

Output Enable Terminal Voltage -0.3 V - 5.5 V

Sequencing Voltage

-0.3 V - Vin

Ambient Temperature

-40 °C

85 °C

Storage Temperature

-55 °C

125 °C

Notes: All specifications are typical at 25 °C unless otherwise stated.

1. SRBA-06F2Ax series of modules include a sequencing feature that enables users to implement

various types of output voltage sequencing in their applications. This is accomplished via an additional

sequencing pin. When the sequencing feature is not used, tie the SEQ pin to Vin or leave the SEQ pin

floating.

SRBA-06F2Ax RoHS Com

liant Rev.A

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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output

Input Specifications

Parameter Min Typ Max Notes

Input Voltage 2.4 V - 5.5 V

Vo, set

≤ Vin-0.5 V

Input Current (full load)

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.75 V

4.73 A

5.49 A

5.11 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 1uH, 5 Hz to 20 MHz.

t Inrush Current Transient - - 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=0%~50% full load;

Io=50%~100% full load

Line Regulation - 0.3%Vo,set - Vin=Vinmin to Vinmax

Regulation Over Temperature

(-40 °C to +85 °C)

- 0.4%Vo,set - Tref=Tamin to Tamax

Output Current 0 A - 6 A

Current Limit Threshold 9 A - 18 A Hiccup mode

Short Circuit Surge Transient - 0.32 A

s -

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 &

1uF/10 V ceramic capacitor

at output

Turn on Time - 6 mS 10 mS

Overshoot at Turn on - 0% 3%

Output Capacitance

ESR ≥ 1mohm

ESR ≥ 10mohm

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

O = 0.75 V -

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 output

Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.

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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output

General Specifications

Parameter Min Typ Max Notes

Efficiency

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.75 V

93%

91%

88%

87%

84%

78%

Measured at Vin=5 V, full load

Switching Frequency 250 kHz 300 kHz 350 kHz

Over Temperature Shutdown -

135 °C

Output Voltage Trim Range 0.7525 V - 3.63 V

MTBF 6,976,379 hours

Calculated Per Bell Core SR-332 (Vin=5 V;

Vo=0.75 V, I

O = 4.8 A; Ta = 25 °C)

Dimensions

Inches (L × W × H)

Millimeters

(

L × W × H

)

0.8 x 0.45 x 0.25

20.32 x 11.42 x 6.36

Weight - 5 g -

Note: All specifications are typical at 25 °C unless otherwise stated.

Control Specifications

Parameter Min Typ Max Notes

Remote On/Off

Signal Low (Unit Off) -0.2 V - 0.3 V

Signal High (Unit On) - - Vin, max

Active High: SRBA-06F2A0; Remote On/Off

pin open, Unit on.

Signal Low (Unit On) -0.2 V - 0.3 V

Signal High (Unit Off) 1.5 V - Vin, max

Active Low: SRBA-06F2AL; Remote On/Off

pin open, Unit on.

Sequencing Voltage 0 V - Vin

Sequencing Voltage applied on SEQ pin

should be higher than output voltage.

Sequencing Slew Rate Capability - - 2 V/ mS

Sequencing Delay Time 10 mS - -

Delay from Vinmin to application of voltage on

SEQ pin

Tracking Accuracy

Power-Up

Power-Down

100 mV

200 mV

400 mV

Output Trim Equations

Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The

Trim Up resistor should be connected between the Trim pin and Ground.

11.5

7525.0

07.21

−

adj

TrimUp

Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The

Trim Up voltage should be connected between the Trim pin and Ground.

)7525.0(1698.07.0

−

−=

adjTrimUp

Rtrim

Module

Vout

GND

Trim

Vtrim

Module

Vout

GND

Trim

P1-P3 P4-P6 P7-P9

SRBA-06F2ALG

Mfr. #:

Buy SRBA-06F2ALG

Manufacturer:

Stewart Connector / Bel

Description:

Non-Isolated DC/DC Converters Non-Isolated DC-DC Converter 20W

Lifecycle:

New from this manufacturer.

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SRBA-06F2ALG

SRBA-06F2ALG

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