Power Management
A A
MICROELECTRONICS
GM7230
3A STEP-DOWN VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS
Rating
Value
Unit
Maximum Supply Voltage
45
V
ON/OFF Pin Input Voltage/ Feed back pin voltage
Output Voltage to Ground (Steady State)
Power Dissipation
-0.3
V
+25
V
-1.0
V
-
Internally Limited
-65 to + 150
+150
Storage Temperature Range
°C
°C
°C
kV
°C
Maximum Junction Temperature
-40
T
J
125
Operating Temperature Range
Minimum ESD Rating (C=100pF, R=1.5kW)
2
Lead Temperature (Soldering, 10 sec.)
+260
Lead Temperature
S Package
Vapor Phase (60 secretary.)
Infrared (10 secretary.)
T Package (Soldering, 10 secretary.)
Maximum Junction Temperature
+215
+245
+260
+150
°C
OPERATING CONDITIONS
Rating
Value
Unit
Temperature Range
45
T
+125
°C
J
Supply Voltage
4.5 to 40
V
BLOCK DIAGRAM
ON/ OFF
V
IN
Current
+
+
2.5V
Regulator
1.235V
Start Up
Source
Bias
220 220
mV mV
Reference
+
COMP
-
Current
Limit
2.5V
-
COMP
+
3A
FEEDBACK
Switch
GM
+
R2
AMP
-
-
Latch
Driver
COMP
+
Active
R1=
Capacitor
2.5K
Reset
+
OP AMP
Thermal
Limit
OUTPUT
-
3.3V,R2=4.2K
5V,R2=7.6K
12V,R2=21.8K
ADJ,R2=0W
R1=OPEN
FREQ SHIFT
150kHz
OSC
GND
3
GAMMA [ GAMMA MICROELECTRONICS INC. ]
