onsemi NCP5008
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. 7 1 Publication Order Number: NCP5008/D NCP5008, NCP5009 BACK LIGHT WHITE LED CURRENT DRIVE CONTROLLER BandGap POR POR Vbat Vbat 10 Vbat R1 1R8 50 k 50 k VBIAS 4 CLK 5 CS 3 Vbat Vbat Q2 POR LOCAL 6 Iref 1 PHOTO 2 (See Note) Vbat + Vref Serial To Parallel Latches 1:8 Vref Selection Iout Reference...| Part No. | NCP5008 |
|---|---|
| Datasheet | NCP5008 Download |
| Manufacturer |  onsemi |
| Description | Backlight LED Boost Driver |
| Buy | Stock & Price |
FEATURES
● 2.7 to 6.0 V Input Voltage Range● Output Voltage from Vbat to 15 V
● 3.0 mA 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 Typical
APPLICATIONS
● LED Display Back Light Control● High Efficiency Step Up Converter Vbat R1 30 k GND U1 1 Iref 2 PHOTO C1 Vbat 10 9 L1 10 mF/6.3 V GND Q1 NPN−PHOTO Vbat GND Vcc 4 3 5 VBIAS CS CLK NCP5009 D1 D2 8 L2 7 GND 6 LOCAL D3 D4 L1 22 mH D5 MBR0520 GND MICROCONTROLLER LED LED LED LED GND C2 GND 2.2 mF/16 V Figure 1. Typical Battery Powered LED Boost Driver MARKING DIAGRAM Micro 10 DM SUFFIX 5Tx AYW G 1 CASE 846B G 1 5Tx = Device Number x = 8 or 9 A = Assembly Location Y = Year W = Work Week G = Pb−Free Packa...
