gm7109 Gamma Microelectronics, gm7109 Datasheet - Page 3

• Manufacturer Part Number: gm7109
• Description: 150khz, 2a Step Down Voltage Switching Regulators
• Manufacturer: Gamma Microelectronics

Absolute Maximum Ratings
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 (θ
** 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)
Block Diagram
For 3.3V, R2 = 4.2K
For 5.0V, R2 = 7.6K
For Adj, R2 = 0 and R1 = OPEN
Current
Source
Bias
R2
R1 = 2.5K
Reference
1.235V
AMP
GM
Reference
COMP
2.5V
2.5V
Freq. Shift
(Note 1)
JA
)
150KHz
OSC
Start UP
Internally Limited
-0.3 + V
-0.3 + V
Latch
SD
- 65 to 150
- 40 to 125
150KHz, 2A STEP DOWN VOLTAGE
Reset
Value
+ 150
+ 260
45
36
2
Current
IN
IN
Limit
+ 0.3
+ 0.3
Thermal
Driver
Limit
COMP
COMP
SWITCHING REGULATORS
220mV
GM7109
℃/W
Unit
kV
℃
℃
℃
℃
V
V
V
-
220
Switch
2A
OUTPUT
GND
V
IN
3