a708ygt ADD Microtech Inc., a708ygt Datasheet

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a708ygt

Manufacturer Part Number
a708ygt
Description
3 Channels 20ma Advanced Current Regulator
Manufacturer
ADD Microtech Inc.
Datasheet
1.A708YGT.pdf (8 pages)
regulator for driving LEDs. Only bypass capacitor is
required and the noise is very low. The special circuit
design provides over 90% efficiency because of the very
low dropout voltage.
LCD display, such as mobile phone, smart phone, PDA,
notebook, and monitor, etc.
Copyright © 2008 ADDtek Corp.
Note:
Package Type. Y: TSOT-23-6
The A708 is a 3 channels 20mA advanced current
Target end applications are LED backlights for color
-40 ~ 85
T
A
TYPICAL APPLICATION CIRCUIT
(°C)
www.addmtek.com
Part Number
Enable
V
V
LED+
DD
C
BP
C
DESCRIPTION
IN
:
A 7 0 8 □ □ □
Y
EN
VDD
LED1
Plastic TSOT-23-6
6-pin
A708YFT (Lead Free)
A708YGT (Green)
A708
LED2
GND
LED3
ORDER INFORMATION
Packing.
Package Process.
1
T: Tape & Reel
F: Lead Free;
Fixed 20mA DC constant sink current.
Individual current sink circuit for each LED
string to prevent short / open circuit on LEDs.
TSOT-26 package available.
High efficiency.
Supply voltage range 2.7V ~ 12V.
Output sustaining voltage up to 17V.
0.1uA standby current.
2KV HBM ESD protection.
Advanced Bi-CMOS process.
Small Size Color LCD Backlights.
Mobile Phone, Smart Phone.
LED Backlight for Portable DVD, NB, Monitors,
and UMPC.
A
G: Green
DVANCED
PACKAGE PIN OUT
GND
V
EN
APPLICATIONS
DD
FEATURES
TSOT-23-6
3
1
2
A708
C
URRENT
3 C
DD076_C -- OCTOBER 2008
6
5
4
LED1
LED2
LED3
HANNELS
R
EGULATOR
A708
20mA

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a708ygt Summary of contents

Page 1

... Part Number Package Type. Y: TSOT-23-6 Copyright © 2008 ADDtek Corp. LED1 LED2 LED3 A708 GND ORDER INFORMATION Plastic TSOT-23-6 6-pin A708YFT (Lead Free) A708YGT (Green) Packing. T: Tape & Reel Package Process. F: Lead Free HANNELS A C DVANCED URRENT FEATURES Fixed 20mA DC constant sink current. ...

Page 2

Input Voltage Output Sustaining Voltage, V LEDn Voltage at all other pins Maximum Junction Temperature, T Storage Temperature Range Lead Temperature (soldering, 10 seconds) Note: Exceeding these ratings could cause damage to the device. All voltages are with ...

Page 3

Pin Name LED1 ~ LED3 Output pins; connect to LED’s cathode. Enable control pin. Pulling this pin high will enable the device. Pulling this pin to GND EN will disable the device. V Power supply DD GND Ground PGND Power ...

Page 4

Output Current vs. Supply Voltage 21.00 20.50 20.00 19.50 19.00 0.0 5.0 Supply Voltage (V) Output Current vs. Dropout Voltage 25.00 20.00 15.00 10.00 5.00 0.00 10 100 Dropout Voltage (mV) Copyright © 2008 ADDtek Corp. CHARACTERISTIC CURVES 21.0 20.5 ...

Page 5

Enable Pulling the EN pin to high will enable the device sinking constant current on LED pins. Pulling the EN pin to ground will shutdown the device. This pin should not be left floating and need to be terminated. LED ...

Page 6

Li-ion Battery Voltage Supply The A708 can work with Li-ion battery. The supply voltage of Li-ion battery ranges from 4.5V down to lower than 3V while the white/blue LED forward voltage (V voltage range and LED forward voltage can be ...

Page 7

... Surface Mount TSOT- Copyright © 2008 ADDtek Corp. PACKAGE A708YGT 《Green Part》 θ θ1 4x θ Device Code for A708 Y : Year Code W : Week Code T : Trace Code WT : Green Process MILLIMETERS ...

Page 8

ADDtek reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the ...

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