NCP5007_06 Datasheet, PDF (1/21 Pages) ON Semiconductor – Compact Backlight LED Boost Driver

NCP5007
Compact Backlight LED
Boost Driver
The NCP5007 is a high efficiency boost converter operating in a
current control loop, based on a PFM mode, to drive White LEDs. The
current mode regulation allows a uniform brightness of the LEDs. The
chip has been optimized for small ceramic capacitors and is capable of
supplying up to 1.0 W output power.
Features
• Inductor Based Converter brings High Efficiency
• Constant Output Current Regulation
• 2.7 to 5.5 V Input Voltage Range
• V_out to 22 V Output Compliance Allows up to 5 LEDs to be Driven
in Series which Provides Automatic LED Current Matching
• Built−in Output Overvoltage Protection
• 0.3 mA Standby Quiescent Current
• Includes Dimming Function (PWM)
• Enable Function Driven Directly from Low Battery Voltage Source
• Thermal Shutdown Protection
• All Pins are Fully ESD Protected
• Low EMI Radiation
• Pb−Free Package is Available
Typical Applications
• LED Display Back Light Control
• High Efficiency Step Up Converter
http://onsemi.com
5
1 _TSOP−5
(SOT23−5, SCR59−5)
SN SUFFIX
CASE 483
MARKING
DIAGRAM
5
DCLAYWG
G
1
DCL = Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
FB 1
GND 2
EN 3
5 V_bat
4 V_out
GND
V_bat
U1
3
EN
V_bat
5
V_bat
L1
22 mH
C1
4.7 mF
GND
GND
2
GND
1
FB
V_out ⁴
NCP5007
D1
MBR0530
C2
1.0 mF
R1
D6 D5 D4 D3 D2
5.6 W
Figure 1. Typical Application
GND
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5007SNT1 TSOP−5 3000/Tape & Reel
NCP5007SNT1G TSOP−5 3000/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
March, 2006 − Rev. 4
Publication Order Number:
NCP5007/D