GM7130
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Electrical Characteristics: All Output Voltage Versions
(Specifications with standard type face are for T
J
= 25℃, and those with bold face type apply over full Operating Temperature
rage. Unless otherwise specified, V
IN
= 12V for 3.3V, 5.0V and Adj version, V
IN
= 25V for 12V version, I
LOAD
= 500mA)
Parameter
Feedback Bias
Current
Oscillator
Frequency
Saturation
Voltage
Max Duty Cycle
(ON)
Current Limit
Output Leakage
Current
Quiescent
Current
Standby
Quiescent
Current
Condition
V
OUT
=5V (Adjustable Version Only)
Symbol
I
b
f
o
Min
-
47
42
Typ
50
Max
100
500
58
63
Unit
nA
(Note 3)
52
kHz
l
OUT
= 3A (Notes 4, 5)
(Note 5)
Peak Current (Notes 4, 5)
Output =0V (Notes 4, 6)
Output = -1V (Notes 4, 6)
(Note 6)
V
SAT
DC
l
CL
-
93
4.2
3.5
1.4
98
5.8
1.8
2.0
-
6.9
7.5
V
%
A
l
L
l
Q
l
STBY
-
-
-
7.5
5
50
2
30
10
200
1.0
0.8
mA
mA
µA
ON/OFF
= 5V (OFF)
Low (ON)
ON/OFF
Pin
Logic lnput
Level
V
IH
-
2.2
2.4
1.2
V
High (OFF)
V
LOGlC
= 2.5V (OFF)
V
LOGlC
= 0.5V (ON)
V
IL
I
H
I
L
1.4
12
0
-
30
10
µA
ON/OFF Pin
Input Current
Note 1:
Stresses greater than those listed under Maximum Ratings may cause permanent damage to
the device. This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
The human body model is a 100pF capacitor discharge through a 1.5KΩ resistor into each pin.
External components such as the catch diode, inductor, input and output capacitors, and voltage
programming resistors can affect switching regulator system performance. Where the GM2576
is used as shown in Figure 1&2 test circuits.
No diode, inductor or capacitor connected to output pin.
Feedback pin removed from output and connected to 12V for the 3.V, 5V and Adj version, to
force the output transistor switch OFF.
Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
GM7130
V1.11
7
GAMMA [ GAMMA MICROELECTRONICS INC. ]
