4

GM7230

150KHz, 3A STEP DOWN VOLTAGE

SWITCHING REGULATORS

Rating

Value

Unit

Maximum Supply Voltage

45

V

SD Pin Input Voltage / Feed Back Pin Voltage

V

Output Voltage to Ground (Steady State)

V

Power Dissipation

Internally Limited

-

Thermal Resistance

– Junction to Ambient (



** 2 square inch of FR-4, double sided, 1oz. minimum copper weight, is

recommended

36

℃/W

Storage Temperature Range

- 65 to 150

℃

Maximum Junction Temperature

+ 150

℃

Operating Temperature Range

- 40 to 125

℃

Minimum EDS Rating (Note 2)

2

kV

Lead Temperature (Soldering, 10 sec)

+ 260

℃

Block Diagram

Current

Source

Bias

1.235V

Reference

2.5V

Reference

Start UP

COMP

220

220mV

SD

COMP

3A

Switch

2.5V

Current

Limit

Driver

Latch

COMP

AMP

GM

R2

R1 = 2.5K

Thermal

Limit

150KHz

OSC

Reset

Freq. Shift

OUTPUT

GND

For 3.3V, R2 = 4.2K

For 5.0V, R2 = 7.6K

For Adj, R2 = 0 and R1 = OPEN

FB