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G5675 Schematic ( PDF Datasheet ) - Global Mixed-mode Technology

Teilenummer G5675
Beschreibung 5A Synchronous Step-Down DC/DC
Hersteller Global Mixed-mode Technology
Logo Global Mixed-mode Technology Logo 




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G5675 Datasheet, Funktion
Global Mixed-mode Technology Inc.
G5675
5A Synchronous Step-Down DC/DC
Features
5A Output Current*
75mInternal Power MOSFET Switch
Stable with Low ESR Output Ceramic Capacitors
or POSCAPs
Less Than 1µA Shutdown Current
1MHz Switching Frequency
Power Good Opened Drain Output
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Output Adjustable from 0.6V to VIN
Available in TDFN3X3-10 Package
*The output voltage should be less then 1.8V. If the Vout set-
ting is larger then 1.8V, the output current will be less then
5A because of thermal protection.
Applications
NB
Distributed Power Systems
Pre-Regulator for Linear Regulators
General Description
The G5675 is a monolithic step-down switch mode
regulator with a built in internal power MOSFET. It
achieves a continuous output current at 1MHz switch-
ing frequency with excellent load and line regulation.
Current mode operation provides fast transient re-
sponse and eases of loop stabilization. Power good
function delivers power supply ready signal to the load.
Fault condition protection includes cycle-by-cycle cur-
rent limiting, output short circuit protection and thermal
shutdown. In shutdown mode the regulator ground
current is controlled less than 1µA. An Internal
soft-start minimizes the inrush supply current at initial
startup.
The G5675 requires a minimum number of readily
available standard external components. It is available
in TDFN3X3-10 package.
Ordering Information
ORDER
NUMBER
G5675RE1U
Note: RE: TDFN3X3-10
1 : Bonding Code
U : Tape & Reel
Pin Configuration
MARKING
5675
TEMP.
RANGE
-40°C to +85°C
PACKAGE
(Green)
TDFN3X3-10
Typical Application Circuit
LX 1
LX 2
LX 3
PG 4
EN 5
G5675
Thermal
Pad
10 PVIN
9 PVIN
8 SVIN
7 NC
6 FB
TDFN3X3-10
Note: Recommend connecting the Thermal Pad
to the Ground for excellent power dissipation.
VIN
20µF
10
0.1µF
OFF ON
G5675
PVIN
LX
SVIN
FB
EN PG
PGND GND
2.2µH
R1
40k
VOUT
1.8V/5A
22µFx2
R2
20k
10k
VIN
Ver: 0.1
Jul 22, 2011
TEL: 886-3-5788833
http://www.gmt.com.tw
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