APW7071
White LED DC/DC Step-Up Converter
Features
General Description
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2.4V to 6V Input Voltage Range
The APW7071 is a high frequency step up DC/DC
converter in a small 6 leads SOT-23 package spe-
cially designed to drive white LEDs with a constant
current. The device can drive up to 4 LEDS in a series
from one Li-Ion cell. The APW7071 is ideal for LCD
panels requiring low current and high efficiency as well
as white LED applications for cellular phone back-
lighting.
400mA, Internal Switch Current
Up to 1MHz Switching Frequency
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70mATypical No Load Quiescent Current
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0.1mATypical Shutdown Current
Internal Soft-start
Available in a Tiny 6-Pin SOT-23 Package
Up to 87% efficiency
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Operating Output Capacitor down to 0.1mF
Over Voltage Protection included
Package Pin Out
Lead FreeAvailable (RoHSCompliant)
V
IN
OVP SHDN
4
6
5
2
Applications
1
3
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Cellar Phones White LED Back Light
PDAs, Handheld Computers
Digital Still Cameras
SW GND FB
SOT-23-6(TopView)
APW7071
MP3 Players
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GPSReceivers
Ordering and Marking Information
Package Code
C : SOT-23-6
Operating Junction Temp. Range
E : -40 to 85°C
APW7071
Lead Free Code
Handling Code
Temp. Range
Package Code
Handling Code
TU : Tube
Lead Free Code
L : Lead Free Device
TR : Tape & Reel
Blank : Original Device
APW7071 C :
W71X
XXXXX - Date Code
Notes: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate
termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering
operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for
MSL classification at lead-free peak reflow temperature.
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright ã ANPEC Electronics Corp.
1
www.anpec.com.tw
Rev. A.1 - Feb., 2006