APW7104 Datasheet, PDF (1/18 Pages) Anpec Electronics Coropration – 1.5MHz, 1A Synchronous Buck Regulator

APW7104
1.5MHz, 1A Synchronous Buck Regulator
Features
General Description
• 1A Output Current
• Wide 2.7V~6.0V Input Voltage
• Fixed 1.5MHz Switching Frequency
• Low Dropout Operating at 100% Duty Cycle
• 25µA Quiescent Current
• Integrate Synchronous Rectifier
• 0.6V Reference Voltage
• Current-Mode Operation with Internal
Compensation
- Stable with Ceramic Output Capacitors
- Fast Line Transient Response
• Short-Circuit Protection
• Over-Temperature Protection with Hysteresis
• Available in SOT-23-5/TSOT-23-5A Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
APW7104 is a 1.5MHz high efficiency monolithic synchro-
nous buck regulator. Design with current mode scheme,
the APW7104 is stable with ceramic output capacitor. In-
put voltage from 2.7V to 6.0V makes the APW7104 ideally
suited for single Li-Ion battery powered applications. 100%
duty cycle provides low dropout operation, extending bat-
tery life in portable electrical devices. The internally fixed
1.5MHz operating frequency allows the using of small
surface mount inductors and capacitors. The synchro-
nous switches included inside increase the efficiency
and eliminate the need of an external Schottky diode.
The APW7104 is available in SOT-23-5/TSOT-23-5A
packages.
Applications
Pin Configuration
• HD STB
• BT Mouse
• PND Instrument
• Portable Instrument
Simplified Application Circuit
RUN 1
GND 2
SW 3
APW7104
5 FB
4 VIN
SOT-23-5/TSOT-23-5A
(Top View)
V_IN
C1
4.7µF
(MLCC)
4 _VIN
L1
2.2µH
SW ³
APW7104
R1
1 _{RUN FB 5}
GND
2
R2
V_OUT
C2
10µF
(MLCC)
C3
(option)
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 © ANPEC Electronics Corp.
1
Rev. A.6 - Mar., 2012
www.anpec.com.tw