GMT AT1526 1mhz, all-ceramic, 2a pwm buck dc/dc converter Datasheet

AT1526
Global Mixed-mode Technology
1MHz, All-Ceramic, 2A PWM Buck DC/DC Converter
General Description
Features
„
„
„
„
„
„
„
„
„
The AT1526 high-efficiency, DC/DC buck converter
delivers up to 2A of output current. The device operates 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.
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
The AT1526 operate at a fixed frequency of 1MHz with
an efficiency of up to 94%. The high operating frequency minimizes the size of external components.
Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protections
improve design reliability.
Applications
„
„
„
„
The AT1526 are available in a space-saving 8-pin SO
package.
ASIC/DSP/µP/FPGA Core and I/O Voltages
Set-Top Boxes
Cellular Base Stations
Networking and Telecommunications
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
( Green)
A1526
-40°C to +85°C
SOP-8
AT1526P11U
Note: P1:SOP-8
1: Bonding Code
U: Tape & Reel
Pin Configuration
Typical Application Circuit
Input
2.5V to 6V
AT1526
VCC
1
8
VIN
REF
2
7
LX
3
6
PGND
FB
4
5
EN
VIN
LX
VCC
FB
7
Output
0.8V to VIN , Up to 2A
2.2µH
CFB * (option)
10Ω
1
10µF
GND
AT1526
8
4
R1
0.1µF
5
ON OFF
SOP-8
VOUT = 0.8V × ( 1+
REF
EN
PGND
6
R1
R2
2
22µF
R2
GND
3
0.1µF
)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.1
Dec 05, 2012
1
AT1527
Global Mixed-mode Technology
1MHz, All-Ceramic, 3A PWM Buck DC/DC Converter
General Description
Features
„
„
„
„
„
„
„
„
The AT1527 high-efficiency, DC/DC buck converter
delivers up to 3A of output current. The device operates
from an input voltage of 2.5V to 6V and provides an
output voltage from 0.8V to VIN, making the AT1527
ideal for on-board post-regulation applications.
Ceramic Input and Output Capacitors
Efficiency Up to 94%
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
The AT1527 operate at a fixed frequency of 1MHz with
an efficiency of up to 94%. The high operating frequency minimizes the size of external components.
Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protections
improve design reliability.
Applications
„
„
„
„
ASIC/DSP/µP/FPGA Core and I/O Voltages
Set-Top Boxes
Cellular Base Stations
Networking and Telecommunications
The AT1527 are available in a space-saving 8-pin SO
package.
Ordering Information
ORDER
NUMBER
AT1527F11U
Note: F1:SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
MARKING
TEMP.
RANGE
PACKAGE
(Green)
A1527
-40°C to +85°C
SOP-8 (FD)
Pin Configuration
Typical Application Circuit
A1527
AT1527
VCC
1
8
VIN
REF
2
7
LX
GND
3
6
PGND
8
VIN
5V
VIN
LX
7
2.2µH
CFB * (option)
10Ω
Thermal
Pad
10µF
1
5
FB
4
5
EN
ON OFF
SOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
VCC
FB
0.1µF
VOUT = 0.8V × ( 1+
EN
PGND
6
R1
R2
REF
GND
3
4
2
0.1µF
R2
16k
R1
50k
VOUT
3.3V
22µF
)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver:1.1
Dec 05, 2012
1
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