GM7130 Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – 3A STEP-DOWN VOLTAGE REGULATORS

GM7130
3A STEP-DOWN VOLTAGE REGULATORS
Power Management
Description
The GM7130 series of regulators provide all the active functions
for a step-down (buck) switching regulator, and drive 3A load with
excellent line and load regulation. GM7130's are available in fixed
output voltages of 3.3V, 5V, 12V, 15V, and a versatile Adjustable
output version. These regulators are simple to use and require a
minimum number of external components. Features include inter-
nal frequency compensation and a fixed-frequency oscillator. The
GM7130 series are high-efficiency replacements for popular
three-terminal linear regulators, requiring a smaller heatsink or
even no heatsink. The GM7130's perform well with standard
inductors from several manufacturers, simplifying the design of
switch-mode power supplies. The GM7130 series guarantee ±4%
tolerance on output voltage within specified input voltages and
output load conditions, and ±10% on the oscillator frequency.
External shutdown is included, with 50 µA (typical) standby cur-
rent. The output switch has cycle-by-cycle current limiting, as well
as thermal shutdown for full protection under fault conditions.
Features
3.3V, 5V, 12V, 15V, Adjustable output versions
Adjustable version output voltage range 1.23V
to 37V ±4% max over line and load conditions
3A output current
Input voltage range 7V to 40V
Requires only 4 external components
High efficiency
TTL shutdown capability, low power standby
mode
Thermal shutdown, current limit protection
Uses standard inductors
52 kHz fixed frequency internal oscillator
Application
Pre-regulator for linear regulators
High-efficiency step-down buck regulator
On-card/ board switching regulators
Positive to negative converter (buck-boost)
TYPICAL APPLICATIONS
7V - 40V
Unregulated
DC Input
Feedback
+V_IN
4
GM7130-5.0
1
Output
100 µH
+
C_IN
100 µF
3
GND
2
5
ON/ OFF
L1
D1
1N5822
+5V
Regulated
Output
3A Load
+
C_OUT
680 µF
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PRELIMINARY