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G5602 Schematic ( PDF Datasheet ) - Global Mixed-mode Technology

Teilenummer G5602
Beschreibung High-Speed Step-Down Controller
Hersteller Global Mixed-mode Technology
Logo Global Mixed-mode Technology Logo 




Gesamt 1 Seiten
G5602 Datasheet, Funktion
Global Mixed-mode Technology
G5602
High-Speed Step-Down Controller
Features
Ultra-High Efficiency
No Current-Sense Resistor (Lossless ILIMIT)
Quasi-PWM with 100ns Load-Step Response
1% VOUT Accuracy Over Line and Load
0.75V to 3.6V Adjustable Output Range
4.5V to 24V Battery Input Range
Integrated Boost Diode
OVP & UVP
1.7ms Soft-Start
Drives Large Synchronous-Rectifier FETs
Power-Good Indicator
Applications
Notebook Computers
CPU Core Supply
I/O Supply
Chipset/RAM Supply as Low as 0.75V
Networking Power Supply
General Description
G5602 uses constant on-time control scheme to han-
dle wide input/output voltage ratios with ease and pro-
vides 100ns instant-onresponse to load transients
while maintaining a relatively constant switching fre-
quency. The G5602 achieves high efficiency at a re-
duced cost by eliminating the current-sense resistor
found in traditional current-mode PWMs. Efficiency is
further enhanced by an ability to drive very large syn-
chronous rectifier MOSFETs. Single-stage buck con-
version allows these devices to directly step down
high-voltage batteries for the highest possible effi-
ciency. Alternatively, two-stage conversion (stepping
down the +5V system supply instead of the battery) at
a higher switching frequency allows the minimum pos-
sible physical size. The G5602 is intended for CPU
core, chipset, DRAM, or other low-voltage supplies as
low as 0.75V. The G5602 is available in 16-pin TQFN
3X3 and SSOP-16 package and includes over voltage
protection.
Ordering Information
ORDER
NUMBER
G5602R41U
G5602S11U
Note: R4:TQFN3X3-16
1: Bonding Code
U : Tape & Reel
MARKING
S1: SSOP-16
5602
G5602
Pin Configuration
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
TQFN3X3-16
SSOP-16
OUT 1
VCC 2
FB 3
PGOOD 4
Thermal
Pad
12 DH
11 LX
10 ILIM
9 VDD
EN_SKIP
TON
1
2
OUT 3
VCC 4
FB 5
PGOOD 6
AGND
NC
7
8
G5602 TQFN3X3-16
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Ver:1.0
Aug 29, 2011
1
G5602
SSOP-16
16 BST
15 DH
14 LX
13 ILIM
12 VDD
11 DL
10 PGND
9 NC
TEL: 886-3-5788833
http://www.gmt.com.tw





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