APE2902 Datasheet, PDF (1/8 Pages) Advanced Power Electronics Corp. – MICROPOWER VFM STEP-UP DC/DC CONVERTER

Advanced Power
Electronics Corp.
APE2902
MICROPOWER VFM STEP-UP DC/DC CONVERTER
FEATURES
Very Low Supply Current is 22uA (typ.)
Maximum Shutdown Current <1uA
Output Voltage is Available form 2.5V to 5.0V
by 0.1V Steps
Output Voltage Accuracy ±5%
Output Current up to 100mA
Low Ripple and Low Noise
Very Low Start-up Voltage
High Efficiency (Vout = 5V TYP. 87%)
Few External Components
Internal Soft-Start
Low Profile: SOT-23-5L Pb-Free
DESCRIPTION
The APE2902 is a high efficiency VFM Step-up DC/DC
converter for small, low input voltage or battery powered
systems with ultra low quiescent supply current. The
APE2902 accept a positive input voltage from start-up
voltage to V_OUT and convert it to a higher output voltage in
the 2.5 to 5V range.
The APE2902 combine ultra low quiescent supply
current and high efficiency to give maximum battery life. The
high switching frequency and the internally limited peak
inductor current permits the use of small, low cost inductors.
Only three external components are needed an inductor a
diode and an output capacitor.
The APE2902 is suitable to be used in battery powered
equipment where low noise, low ripple and ultra low supply
current are required. Operating shutdown function is outside
controlling. If EN connects to GND, the IC was been shut
down and then the supply current is lower to 1uA.The
APE2902 is available in very small package: SOT-23-5L.
Typical applications are pagers, cameras & video
camera, cellular telephones, wireless telephones, palmtop
computer, battery backup supplies, battery powered
equipment.
TYPICAL APPLICATION
VIN
L1
1
2
47uH
D1
B140
1
2
VOUT
C1
100uF
C2
0.1uF
Enable Input
U1
NC SW
GND
EN OUT
APE2902
C4
0.1uF
C3
47uF
ORDER/MARKING INFORMATION
APE2902XX-XX
Package Type Vout
Y5 : SOT-23-5L
Y5R : SOT-23-5L
22 : 2.2V
25 : 2.5V
26 : 2.6V
27 : 2.7V
:
:
50 : 5.0V
Data and specifications subject to change without notice
t&XYW WW : 01~26(A~Z)
27~52(A~Z)
Year : 8 = 2008
A = 2010
Identification Code
Identification Code see page8.
1
200907313