GM7109 データシートの表示（PDF） - Gamma Microelectronics Inc.
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GM7109 Datasheet PDF : 9 Pages
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GM7109
150KHz, 2A 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 (θJA)
** 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)
Value
45
-0.3 + VIN + 0.3
-0.3 + VIN + 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
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
2A
Switch
OUTPUT
GND
3
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