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Semiconductor Components Industries, LLC, 2003
September, 2003 − Rev. 1
1 Publication Order Number:
NCP5007/D
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 A 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
• Lead−Free Package
Typical Applications
• LED Display Back Light Control
• High Efficiency Step Up Converter
Figure 1. Typical Application
GND
EN
2 4
5
V
out
V
bat
NCP5007
L1
22 H
V
bat
C1
4.7 F
GND
D6 D5 D4 D3
U1
3
D2
V
bat
GND
1
GND
R1
5.6
D1
MBR0530
GND
C2
1.0 F
FB
http://onsemi.com
TSOP−5
(SOT23−5, SCR59−5)
SN SUFFIX
CASE 483
MARKING
DIAGRAM
DCL = Device Code
Y = Year
W = Work Week
1
5
DCLYW
5
4
1
2
3
PIN CONNECTIONS
FB
GND
EN
V
bat
V
out
(Top View)
1
5
Device Package Shipping
ORDERING INFORMATION
NCP5007SNT1G* TSOP−5 3000 Tape & Reel
*G suffix indicates a Pb−free.
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