GM2576
2A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Electrical Characteristics: All Output Voltage Versions
(Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature
rage)
Parameter
Feedback Bias
Current
Oscillator
Frequency
Saturation
Voltage
Max Duty Cycle
(ON)
Current Limit
Output Leakage
Current
Quiescent
Current
Standby
Quiescent
Current
Condition
V
FB
=5V (Adjustable Version Only)
(Note 3)
l
OUT
= 2A (Notes 4, 5)
(Note 5)
Peak Current (Notes 4, 5)
Output =0V (Notes 4, 6)
Output = -1V (Notes 4, 6)
(Note 6)
SD Pin = 5V (OFF)
Symbol
I
b
f
o
V
SAT
DC
l
CL
Min
-
42
-
93
3.6
3.4
Typ
50
52
1.4
98
4.5
Max
100
500
58
1.8
2.0
-
6.9
7.5
Unit
nA
kHz
V
%
A
l
L
l
Q
l
STBY
-
-
-
7.5
5
50
2
30
10
200
1.0
0.8
mA
mA
µA
Low (ON)
SD Pin
Logic
lnput Level
High (OFF)
SD Pin lnput
Current
V
LOGlC
= 2.5V (OFF)
V
LOGlC
= 0.5V (ON)
V
IH
-
2.2
2.4
1.2
V
V
IL
I
H
I
L
1.4
12
0
-
30
10
µA
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 0V to force the output transistor switch ON.
Feedback pin removed from output and connected to 12V for the 3.V, 5V and Adj version, to
force the output transistor switch OFF.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
GM2576
V1.30
5
GAMMA [ GAMMA MICROELECTRONICS INC. ]
