APW7104A Datasheet, PDF (1/16 Pages) Anpec Electronics Coropration – 1.5MHz, 1A Synchronous Buck Regulator

APW7104A
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
• 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 Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
APW7104A is a 1.5MHz high efficiency monolithic syn-
chronous buck regulator. Design with current mode
scheme, the APW7104A is stable with ceramic output
capacitor. Input voltage from 2.7V to 6.0V makes the
APW7104A ideally suited for single Li-Ion battery pow-
ered applications. 100% duty cycle provides low dropout
operation, extending battery life in portable electrical
devices. The internally fixed 1.5MHz operating frequency
allows the using of small surface mount inductors and
capacitors. The synchronous switches included inside
increase the efficiency and eliminate the need of an ex-
ternal Schottky diode.
The APW7104A is available in SOT-23-5 packages.
Applications
Pin Configuration
• HD STB
• BT Mouse
• PND Instrument
• Portable Instrument
Simplified Application Circuit
APW7104A
RUN 1
GND 2
SW 3
5 FB
4 VIN
SOT-23-5 (Top View)
V_IN
C1
4.7µF
(MLCC)
4 _VIN
L1
2.2µH
SW ³
APW7104A
1 _{RUN FB} 5
GND
2
R1
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.2 - Nov., 2012
www.anpec.com.tw