GM7230_13 Datasheet, PDF (4/11 Pages) Gamma Microelectronics Inc. – 150KHz, 3A STEP DOWN VOLTAGE SWITCHING REGULATORS

Absolute Maximum Ratings (Note 1)
Rating
Maximum Supply Voltage
SD Pin Input Voltage / Feed Back Pin Voltage
Output Voltage to Ground (Steady State)
Power Dissipation
Thermal Resistance – Junction to Ambient (_JA)
** 2 square inch of FR-4, double sided, 1oz. minimum copper weight, is
recommended
Storage Temperature Range
Maximum Junction Temperature
Operating Temperature Range
Minimum EDS Rating (Note 2)
Lead Temperature (Soldering, 10 sec)
GM7230
150KHz, 3A STEP DOWN VOLTAGE
SWITCHING REGULATORS
Value
45
-0.3 + V_IN + 0.3
-0.3 + V_IN + 0.3
Internally Limited
36
- 65 to 150
+ 150
- 40 to 125
2
+ 260
Unit
V
V
V
-
℃/W
℃
℃
℃
kV
℃
Block Diagram
Current
Source
Bias
1.235V
Reference
FB
GM
R2
AMP
R1 = 2.5K
For 3.3V, R2 = 4.2K
For 5.0V, R2 = 7.6K
For Adj, R2 = 0 and R1 = OPEN
2.5V
Reference
2.5V
SD
Start UP
COMP
Current
Limit
COMP
220mV
COMP
Latch
Driver
Freq. Shift
Reset
Thermal
Limit
150KHz
OSC
VIN
220
3A
Switch
OUTPUT
GND
4