G5996 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – LED Backlight Controller

Global Mixed-mode Technology
G5996/G5996A
LED Backlight Controller
Features
„ 7V~27V input voltage range
„ High Power Current Mode DC/DC boost Con-
troller
„ Drives up to 4 strings in parallel
„ External Analog/True PWM Dimming
„ +/-2% Voltage Reference
„ Programmable Switching Frequency
„ Programmable Slope Compensation
„ Programmable Current Limit
„ +0.2A/-0.4A Gate Driver
„ Input Under Voltage Protection
„ Output Short Circuit Protection
„ Hiccup Mode Protection for Output Over Voltage
Protection and LED Light Bar Short/Open Pro-
tection
„ Thermal Shutdown
„ Available in TQFN4X4-24/TQFN4X4-28/SOP-28
Package
General Description
The G5996/G5996A is current mode DC/DC controller
that drives up to four strings connected in parallel con-
figuration with multiple LEDs in each string connected
in series. External current sense resistor and slope
compensation resistor make it flexible for various ap-
plications. A PWM dimming input controls a duty ratio
from 0% to 100% with frequency up to few kilohertz.
The G5996/G5996A includes hiccup protection from
both short and open circuits, with automatic recovery
after the fault condition is cleared.
The G5996 is available in a TQFN4X4-24 package.
The G5996A is available in a TQFN4X4-28 and
SOP-28 package.
Applications
„ TV
Ordering Information
ORDER
NUMBER
MARKING
G5996R51U
5996
G5996ARV1U
5996A
G5996AP61U
G5996A
Note: R5 : TQFN4X4-24 RV: TQFN4X4-28 P6: SOP-28
1 : Bonding Code
U : Tape & Reel
Pin Configuration
TEMP.
RANGE
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
PACKAGE
(Green)
TQFN4x4-24
TQFN4x4-28
SOP-28
PWMD 1
SW 2
PVH 3
OVP 4
VIN 5
CS 6
Thermal
Pad
18 GATE3
17 LED3
16 ISEN3
15 ISEN4
14 LED4
13 GATE4
PWMD ¹
SW ²
PVH ³
OVP ⁴
VIN ⁵
CS ⁶
RT 7
Thermal
Pad
21 _GATE3
20 LED3
19 ISEN3
18 ISEN4
17 LED4
16 GATE4
15 _FAULT
G5996 TQFN4X4-24
G5996A TQFN4X4-28
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
LED1 1
GATE1 2
EN 3
PWMD 4
SW 5
PVH 6
OVP 7
VIN 8
CS 9
RT 10
COMP 11
VDD 12
CLIM 13
REF 14
G5996A
SOP-28
28 ISEN1
27 ISEN2
26 LED2
25 GATE2
24 GATE3
23 LED3
22 ISEN3
21 ISEN4
20 LED4
19 GATE4
18 FAULT
17 GND
16 ADIM
15 IREF
Ver: 1.5
Oct 28 2013
TEL: [phone]
http://www.gmt.com.tw
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