Copyright  ANPEC Electronics Corp.
Rev. A.3 - May., 2005
APW34063
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.
1.5A, DC/DC Switching Regulators
Features General Description
Applications
The APW34063 is a monolithic control circuit con-
taining the primary functions required for DC-to-DC
converters. This device consists of an internal tem-
perature compensated reference, comparator, con-
trolled duty cycle oscillator with an active current limit
circuit, driver and high current output switch. This
device was specifically designed to be incorporated
in Step-Down and Step-Up and Voltage-Inverting ap-
plications with a minimum number of external
components.
• Operation from 3.0V to 40V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5A
• Output Voltage Adjustable
• Frequency Operation to 100kHz
• Precision 2% Reference
• SOP-8 and PDIP-8 packages
• Lead Free Available (RoHS Compliant)
Pin Description
1
2
3
4 5
6
7
8
Switch
Collector
Timing
Capacitor
Switch
Emitter
GND
Comparator
Inverting
Input
VCC
IPK
Sense
Driver
Collector
APW34063 Package Code J : PDIP - 8 K : SOP-8
Temp. Range
C : 0 to 70 C
Handling Code
TU : Tube TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device

°
Handling Code
Temp. Range
Package Code
APW34063 J : APW34063
XXXXX
XXXXX - Date Code
APW34063
XXXXXAPW34063 K : XXXXX - Date Code
Lead Free Code
Ordering and Marking Information
• DC/DC Converters
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate termina-
tion 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 classifica-
tion at lead-free peak reflow temperature.