ML9266 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – Step-up DC/DC converter

ML9266
Step-up DC/DC converter
■ General Description
The ML9266 is a small, high efficiency, and low voltage
step-up DC/DC converter with an Adaptive Current Mode
PWM control loop, includes an error amplifier, ramp
generator, comparator, switch pass element and driver
in which providing a stable and high efficient operation
over a wide range of load currents. It operates in stable
waveforms without external compensation.
The low start-up input voltage below 1V makes ML9266
suitable for 1 to 4 battery cells applications of providing
up to 300mA output current. The 450KHz high switching
rate minimized the size of external components. Besides,
the 17 µ A low quiescent current together with high effic-
iency maintains long battery lifetime.
The ML9266 is available in small package SOT-26 and
SOT89-5
■ Applications
◆ LCD Panel
◆ DSC
◆ MP3
◆ Wireless Equipment
◆ Portable Instrument
◆ PDA
■ Features
◆ 90% Efficiency
◆ High Supply Capability to Deliver 3.3V 100mA
with 1 Alkaline cell
◆ 17µA Quiescent (switch-off) Supply Current
◆ 450KHz Fixed Switching Frequency
◆ Zero Shutdown Mode Supply Current
◆ Providing Flexibility for Using Internal and
External Power Switches
◆ 1.0V Low Start-up Input Voltage
◆ Small SOT-26 & SOT89-5 Package
■ Ordering Information
Item
Package Shipping
ML9266MRG
SOT-26
3000pcs/Reel&Tape
ML9266PRG
SOT-89-5 1000pcs/Reel&Tape
■ Package Information
■ Typical Application Circuit
L1
D1
Vin
+
3.3~10uH
C3
1N5819
100uF
C2
1uF
VDD
CE
LX
ML9266
EXT _GND FB
R1
1.6M/3M
Vout
3.3V/5V
+
C1
R2
100uF
980k/1M
SOT89-5
SOT-23-6
■ Pin Configurations
SOT-26
1
2
3
4
5
6
SOT-89-5 Pin NamePin Function
1
CE Chip enable
EXT Output
5
GND Ground
4
LX Switching
2
VDD Input
3
FB Feedback input 1.25V
P1 / 5
Rev. D, May 2008