Copyright  ANPEC Electronics Corp.
Rev. A.1 - Feb., 2006
APW7071
www.anpec.com.tw1
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.
• 2.4V to 6V Input Voltage Range
• 400mA, Internal Switch Current
• Up to 1MHz Switching Frequency
• 70µA Typical No Load Quiescent Current
• 0.1µA Typical Shutdown Current
• Internal Soft-start
• Available in a Tiny 6-Pin SOT-23 Package
• Up to 87% efficiency
• Operating Output Capacitor down to 0.1µF
• Over Voltage Protection included
• Lead Free Available (RoHS Compliant)
Features General Description
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.
Applications
• Cellar Phones White LED Back Light
• PDAs, Handheld Computers
• Digital Still Cameras
• MP3 Players
• GPS Receivers
Package Pin Out
White LED DC/DC Step-Up Converter
APW7071 Package Code
C : SOT-23-6
Operating Junction Temp. Range
E : -40 to 85°C
Handling Code
TU : Tube TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device

Handling Code
Temp. Range
Package Code
APW7071 C : W71X XXXXX - Date Code
Lead Free Code
Ordering and Marking Information
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.
SOT-23-6 (Top View)
APW7071
SW GND
VIN SHDN
FB
1 2 3
45
OVP
6