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 17µA 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. C, Sep 2005