A701/2
www.addmtek.com
DESCRIPTION
A701/2 are adjustable constant current drivers for
LED applications. Six regulated current ports are
designed to provide uniform and pure DC constant
current sinks for driving LEDs within a large range VF
variation.
A701/2 provide users 6-channel constant current
ports to match LEDs with equal current. Users may
program the output current from 5mA to 40mA through
an external resistor, R
SET
, which gives user flexibility in
controlling the light intensity of LEDs.
Two kinds of control logic, active high and active
low, for Output Enable pin (OE/OE pin) are provided for
user’s varies applications. It could precisely adjust LED
brightness from 0% to 100% via OE/OE pin with Pulse
Width Modulation signal.
The thermal protection function protects IC from
over temperature (150°C) damage. Also, the thermal pad
enhances the package power dissipation.
TYPICAL APPLICATION CIRCUIT
V
LED
C
LED
6 C
HANNELS
A
DJUSTABLE
C
ONSTANT
C
URRENT
LED D
RIVER
FEATURES
6 constant-current output channels
Output current deviations:
±3%
between channels,
±7%
between ICs.
Output current programmable through external
resistor.
Constant output current range: 5mA~40mA
Wide supply voltage range: 6V~50V (A702)
75V output sustaining voltage
1uA Shut-down current
2 kinds of control logic for Output Enable pin
APPLICATIONS
Automotive Interior Lighting
Channel Letter, Indoor Lighting
LED Backlight Driver for MP3, MP4, Mobile
Phone, Portable DVD, NB, and LCD TV.
PACKAGE PIN OUT
GND
VDD
OE/OE
13
12
STD
11
OUT6
10
OUT5
9
OUT4
5
6
7
8
16
15
14
ISET
1
GND
ISET
OUT1
OUT2
OUT3
STD
OE/OE
ISET
R
SET
GND
1
2
3
4
5
10
9
8
7
6
VDD
OE/OE
OUT6
OUT5
OUT4
NC
2
OUT1
3
OUT2
4
V
DD
C
IN
Turn ON/OFF
PWM Dimming
VDD
OUT1
OUT 2 OUT 3 OUT 4
OUT 5 OUT 6
A701/A702
NC
GND
OUT3
GND
GND
MSOP-EP-10 Pin
(Top View)
QFN 3mm x 3mm
(Top View)
ORDER INFORMATION
V
DD
Range
2.9V~ 6V
6V~ 50V
Note:
OE/OE Pin Logic
Low Enable
High Enable
Low Enable
Part Number
:
_____
G
MSOP-EP
10 pin
J
QFN 3x3
16 pin
A701GFT
A702GFT-HE
A702GFT
A701
□ □ □
A 7 0 2
□ □ □－
H E
EN Pin Logic.
Packing.
HE: High Enable
T: Tape & Reel
A701JGT
A702JGT-HE
A702JGT
Package Type.
G: MSOP-EP; J: QFN-3×3
Package Process. F: Lead Free; G: Green
Copyright
©
2008 ADDtek Corp.
1
DD082_A -- JUNE 2008
ADDTEK [ ADDTEK CORP ]
