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NCP5008, NCP5009
Backlight LED Boost Driver
The NCP5008/NCP5009 is a high efficiency boost converter
operating in current loop control mode to drive Light Emitting
Diode. The current mode regulation allows a uniform brightness of
the LEDs.
Features
http://onsemi.com
5Tx
AYW G
G
?
?
?
?
?
?
?
?
?
?
?
?
?
2.7 to 6.0 V Input Voltage Range
Output Voltage from V bat to 15 V
3.0 m A Quiescent Supply Current
Automatically LEDs Current Matching
No External Sense Resistor
Includes Dimming Function
Programmable or Automatic Current Output Mode
LOCAL or REMOTE Control Facility
Photo Transistor Sense Feedback Input
Inductor Based Converter brings High Efficiency
Low Noise DC/DC Converter
All Pins are Fully ESD Protected
Pb?Free Package is Available
MARKING
DIAGRAM
Micro 10
DM SUFFIX
CASE 846B
1
1
5Tx = Device Number
x = 8 or 9
A = Assembly Location
Y = Year
W = Work Week
G = Pb?Free Package
(Note: Microdot may be in either location)
Typical Applications
PIN CONNECTIONS
? LED Display Back Light Control
? High Efficiency Step Up Converter
V bat
I ref
NC
CS
VBIAS
1
2
3
4
10
9
8
7
V bat
L1
L2 Iout
GND
U1
C1
CLOCK
5
6
LOCAL
GND
R1
30 k
1
2
I ref
PHOTO
V bat
L1
10
9
10 m F/6.3 V
GND
NCP5008
I ref
Photo
1
2
10
9
V bat
L1
Q1
NPN?PHOTO
Vcc
GND
V bat
L1
22 m H
D5 MBR0520
CS
VBIAS
CLOCK
3
4
5
8
7
6
L2 Iout
GND
LOCAL
4
3
5
VBIAS
CS
CLK
L2
GND
LOCAL
8
7
6
GND
NCP5009
ORDERING INFORMATION
NCP5009
D1
D2
D3
D4
Device
Package
Shipping ?
NCP5008DMR2
Micro 10
4000 / Tape & Reel
GND
LED
LED
LED
LED
NCP5008DMR2G
Micro 10
4000 / Tape & Reel
C2
(Pb?Free)
GND
2.2 m F/16 V
NCP5009DMR2 Micro 10 4000 / Tape & Reel
?For information on tape and reel specifications,
Figure 1. Typical Battery Powered LED Boost Driver
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2006
April, 2006 ? Rev. 7
1
Publication Order Number:
NCP5008/D
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NCP5009 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Backlight LED Boost Driver
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NCP500SN185T1G 功能描述:低压差稳压器 - LDO 1.85V 150mA CMOS w/Enable RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
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NCP500SN18T1G 功能描述:低压差稳压器 - LDO 1.8V 150mA CMOS w/Enable RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20