AMC3100 Datasheet, PDF (1/10 Pages) ADDtek Corp – 1.5MHz, 600mA SYNCHRONOUS STEP-DOWN CONVERTER

www.addmtek.com
AMC3100
1.5MHz, 600mA SYNCHRONOUS
STEP-DOWN CONVERTER
DESCRIPTION
FEATURES
The AMC3100 is a high efficiency synchronous buck
DC/DC converter using a constant frequency, current mode
architecture. Adjustable version and fixed output voltages of
1.2V, 1.5V and 1.8V are available. 300uA low supply current
at no load and <1µA supply current at shutdown. The 2.5V to
5.5V input voltage range makes the AMC3100 ideally suited
for single Li-Ion battery-powered applications. 100% duty
cycle provides low dropout operation, extending battery life in
portable systems. PWM pulse skipping mode operation
provides very low output ripple voltage for noise sensitive
applications.
Switching frequency is internally set at 1.5MHz,
allowing using small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. Low
output voltages are easily supported with the 0.6V feedback
reference voltage.
The AMC3100 is available in a low profile (1mm) Thin
SOT-23-5L package.
„ High Efficiency: Up to 96%
„ 600mA Output Current at V_IN=3V
„ 2.5V to 5.5V Input Voltage Range
„ 1.5MHz Constant Switching Frequency
„ No Schottky Diode Required
„ 100% Duty Cycle as Low Dropout Operation
„ 0.6V Reference Voltage Allows 0.6V
Minimum Output Voltage
„ <1µA Shutdown Mode Supply Current
„ Current Mode Operation for Excellent Line
and Load Transient Response
„ Over-temperature Protected
„ 4KV HBM ESD Protection
„ 5-Pin Thin SOT-23 package
APPLICATIONS
TYPICAL APPLICATION
„ PDA, Personal Media Player
„ Smart Phone
VOUT＝1.8V / 600mA „ Digital Still Camera, Video Camcorder
L
„ Portable Instruments
VIN＝2.5V to 5.5V
VIN
SW
VOUT
„ Bluetooth Headset
AMC3100-1.8
COUT
CIN
4.7uF
RUN
GND
10uF
SYMBOLIZATION
Device Name
Output Voltage
AMC3100DBFT
Adjustable
AMC3100-1.2DBFT 1.2V Fixed
AMC3100-1.5DBFT 1.5V Fixed
AMC3100-1.8DBFT 1.8V Fixed
Marking
A64A
A642
A645
A648
PACKAGE PIN OUT
RUN ¹
GND 2
SW 3
5 V_FB / V_OUT*
4 VIN
TSOT-23-5L
( Top View )
* Note: VFB pin for adjustable version.
VOUT pin for fixed voltage version.
ORDER INFORMATION
DB
SOT-23
5-pin
AMC3100DBF
(Adjustable)
AMC3100-X.XDBF (Fixed Voltage)
Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e. AMC3100-1.8DBFT).
2. The letter ”F” is marked for Lead Free process.
Copyright © 2006 ADDtek Corp.
1
DD010_A -- JUNE 2006