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Buck Converter. AME5106 Datasheet

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Buck Converter. AME5106 Datasheet
















AME5106 Converter. Datasheet pdf. Equivalent













Part

AME5106

Description

PWM Control 2A Buck Converter



Feature


AME, Inc. AME5106 n General Description AME5106 provides low-ripple power, high efficiency, and excellent transient ch aracteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier cirwww.Dat aSheet4U.com cuit as well as a soft-sta rt circuit that prevents overshoot at s tartup. An enable .
Manufacture

Analog Microelectronics

Datasheet
Download AME5106 Datasheet


Analog Microelectronics AME5106

AME5106; function, an over current protect functi on and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will b e reduced from 350KHz to 30KHz. Also, a n internal compensation block is built in to minimum external component count. With the addition of an internal P-cha nnel Power MOS, a coil, capacitors, and a diode connected.


Analog Microelectronics AME5106

externally, these ICs can function as s tep-down switching regulators. They ser ve as ideal power supply units for port able devices when coupled with the SOP- 8L mini-package, providing such outstan ding features as low current consumptio n. Since this converter can accommodate an input voltage up to 18V, it is also suitable for the operation via an AC a dapter. PWM Contr.


Analog Microelectronics AME5106

ol 2A Buck Converter n Applications l PC Motherboard l LCD Monitor l Graphic Ca rd l DVD-Video Player l Telecom Equipme nt l ADSL Modem l Printer and other Per ipheral Equipment l Microprocessor core supply l Networking power supply n Fe atures l Input voltage: 3.6V to 18V. l Output voltage: 0.8V to VCC. l Duty rat io: 0% to 100% PWM control l Oscillatio n frequency: 350KH.





Part

AME5106

Description

PWM Control 2A Buck Converter



Feature


AME, Inc. AME5106 n General Description AME5106 provides low-ripple power, high efficiency, and excellent transient ch aracteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier cirwww.Dat aSheet4U.com cuit as well as a soft-sta rt circuit that prevents overshoot at s tartup. An enable .
Manufacture

Analog Microelectronics

Datasheet
Download AME5106 Datasheet




 AME5106
AME, Inc.
AME5106
PWM Control 2A Buck
Converter
n General Description
AME5106 provides 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




 AME5106
AME, Inc.
AME5106
n Typical Application
www.DataSheet4U.com
PWM Control 2A Buck
Converter
VOUT
L1 Value
Note: VOUT = VFB x (1+RA/RB)
RB=0.7K~ 5K
VIN=12V,IMAX=2A
2.5V
3.3V
22uH
27uH
5V
33uH
n Function Block Diagram
SW
Oscillation
Reference Voltage
Circuit
Source with Soft Start
IN
Thermal
Shutdown
PWM-Switched
Control Circuit
+
-
VEN 100µA
FB
GND
EN OCSET
2 Rev.A.01




 AME5106
AME, Inc.
AME5106
n Pin Configuration
SOP-8
Top View
8 7 65
www.DataSheet4U.com
AME5106
1 234
AME5106
1. FB
2. EN
3. OCSET
4. IN
5. SW
6. SW
7. GND
8. GND
* Die Attach:
Conductive Epoxy
PWM Control 2A Buck
Converter
n Pin Description
Pin Number
1
2
3
4
5,6
7,8
Rev.A.01
Pin Name
FB
EN
OCSET
IN
SW
GND
Pin Description
Output voltage Feedback input.
Set the outputCvoltage by selecting values for Ra and Rb using:
VOUT
=
0.8V 
Ra + Rb
Rb

Connect the ground of the feedback network to an AGND (Analog
Ground) plane which should be tied directly to the GND pin.
Enable Control Input, active high.
The enable pin is an active high control. Tie this pin above 2V to enable
the device. Tie this pin below 0.8V to shut down the device. In shutdown,
all function are disabled. Do not leave EN pin floating.
Add an external resistor to set max output current.
Input Supply Voltage Pin.
Bypass this pin with a capacitor. The capacitor shall be placed as close
to the device as possible.
Switch Node Connection to Inductor.
Ground.
Tie directly to ground plane.
3




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