|
Global Mixed-mode Technology |
Global Mixed-mode Technology Inc.
G5693
1MHz, All-Ceramic, 3A PWM Buck DC/DC Converter
Features
Ceramic Input and Output Capacitors
Efficiency Up to 94%
Operate from 2.5V to 5.5V supply
Adjustable Output from 0.8V to VIN
Internal Soft-Start
Short-Circuit and Thermal-Overload 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 G5693 high-efficiency, DC/DC buck converter
delivers up to 3A of output current. The device oper-
ates from an input voltage of 2.5V to 5.5V and pro-
vides an output voltage from 0.8V to VIN, making the
G5693 ideal for on-board post-regulation applications.
The G5693 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 G5693 are available in a space-saving 8-pin SO
package.
Ordering Information
ORDER
NUMBER
MARKING
G5693F11U G5693
Note: F1:SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
TEMP.
RANGE
-40°C to +85°C
PACKAGE
(Pb free)
SOP-8 (FD)
Pin Configuration
G5693
VCC 1
8 VIN
REF 2
GND 3
The rmal
P ad
7 LX
6 PG ND
FB 4
5 EN
SOP-8 (FD)
Note: Recommend co nnecting the Therma l Pa d
to the G ND fo r exce llen t power d issipa tion.
Typical Application Circuit
VIN
5 . 5V
1 0Ω
G5693
VIN LX
10 µF
0. 1µ F
ON OFF
VCC
FB
EN
PG ND
REF
GND 0.1µF
2. 2µ H
CFB * ( option)
R1
50k
R2
1 6k
V OUT
3 . 3V
2 2µF
R1
V OUT = 0.8V • ( 1+ R2 )
Ver: 0.1
Sep 20, 2008
TEL: 886-3-5788833
http://www.gmt.com.tw
1
|