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PDF AT1526 Datasheet ( Hoja de datos )

Número de pieza AT1526
Descripción 2A PWM Buck DC/DC Converter
Fabricantes Global Mixed-mode Technology 
Logotipo Global Mixed-mode Technology Logotipo

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AT1526 Hoja de datos, Descripción, Manual
Global Mixed-mode Technology
AT1526
1MHz, All-Ceramic, 2A PWM Buck DC/DC Converter
Features
„ Ceramic Input and Output Capacitors
„ Efficiency Up to 94%
„ Guaranteed 2A Output Current
„ Operate from 2.5V to 6V Supply
„ Adjustable Output from 0.8V to VIN
„ Internal Soft-Start
„ Short-Circuit and Thermal-Overload Protection
„ Input Over Voltage Protection
„ RoHS Compliant
Applications
„ ASIC/DSP/µP/FPGA Core and I/O Voltages
„ Set-Top Boxes
„ Cellular Base Stations
„ Networking and Telecommunications
General Description
The AT1526 high-efficiency, DC/DC buck converter
delivers up to 2A of output current. The device oper-
ates from an input voltage of 2.5V to 6V and provides
an output voltage from 0.8V to VIN, making the AT1526
ideal for on-board post-regulation applications.
The AT1526 operate at a fixed frequency of 1MHz with
an efficiency of up to 94%. The high operating fre-
quency minimizes the size of external components.
Internal soft-start control circuitry reduces inrush cur-
rent. Short-circuit and thermal-overload protections
improve design reliability.
The AT1526 are available in a space-saving 8-pin SO
package.
Ordering Information
ORDER
NUMBER
AT1526P11U
Note: P1:SOP-8
1: Bonding Code
U: Tape & Reel
MARKING
A1526
TEMP.
RANGE
-40°C to +85°C
PACKAGE
( Green)
SOP-8
Pin Configuration
Typical Application Circuit
VCC 1
REF 2
GND 3
FB 4
AT1526
SOP-8
8 VIN
7 LX
6 PGND
5 EN
Input
2.5V to 6V
AT1526
2.2µH
8 VIN
LX 7
10Ω
10µF 0.1µF
1 VCC
FB 4
5
ON OFF
EN
PGND
6
REF 2
GND
3 0.1µF
Output
0.8V to VIN , Up to 2A
CFB* (option)
R1
R2
22µF
VOUT = 0.8V ×
( 1+
R1
R2
)
Ver: 1.1
Dec 05, 2012
TEL: 886-3-5788833
http://www.gmt.com.tw
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