Buck Converter. AME5107 Datasheet

AME5107 Converter. Datasheet pdf. Equivalent

Part AME5107
Description PWM Control 3A Buck Converter
Feature AME, Inc. AME5107 n General Description AME5107provides low-ripple power, high efficiency, and excel.
Manufacture Analog Microelectronics
Datasheet
Download AME5107 Datasheet



AME5107
AME, Inc.
AME5107
PWM Control 3A Buck
Converter
n General Description
AME5107provides low-ripple power, high efficiency, and
excellent transient characteristics. The PWM control cir-
cuit is able to vary the duty ratio linearly from 0 up to
www.DataS1h0e0et%4U..cTohmis converter also contains an error amplifier cir-
cuit as well as a soft-start circuit that prevents overshoot
at startup. An enable function, an over current protect func-
tion and a short circuit protect function are built inside,
and when OCP or SCP happens, the operation frequency
will be reduced from 350KHz to 30KHz. Also, an internal
compensation block is built in to minimum external com-
ponent count.
With the addition of an internal P-channel Power MOS,
a coil, capacitors, and a diode connected externally, these
ICs can function as step-down switching regulators. They
serve as ideal power supply units for portable devices when
coupled with the SOP-8L mini-package, providing such
outstanding features as low current consumption. Since
this converter can accommodate an input voltage up to
18V, it is also suitable for the operation via an AC adapter.
n Applications
l PC Motherboard
l LCD Monitor
l Graphic Card
l DVD-Video Player
l Telecom Equipment
l ADSL Modem
l Printer and other Peripheral Equipment
l Microprocessor core supply
l Networking power supply
n Features
l Input voltage: 3.6V to 18V.
l Output voltage: 0.8V to VCC.
l Duty ratio: 0% to 100% PWM control
l Oscillation frequency: 350KHz typ.
l Soft-start, Current limit, Enable function
l Thermal Shutdown function
l Built-in internal SW P-channel MOS
l SOP-8 Package
l All AMEs Lead Free Products Meet RoHS
Standards
C
S
Rev.A.01
1



AME5107
AME, Inc.
AME5107
n Typical Application
www.DataSheet4U.com
PWM Control 3A Buck
Converter
VOUT
L1 Value
Note: VOUT = VFB x (1+RA/RB)
RB=0.7K~ 5K
VIN=12V,IMAX=3A
2.5V
3.3V
22uH
27uH
5V
33uH
n Function Block Diagram
SW
IN
Thermal
Shutdown
Oscillation
Circuit
Reference Voltage
Source with Soft Start
PWM-Switched
Control Circuit
+
-
VEN 100µA
EN OCSET
FB
GND
2 Rev.A.01







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