Micropower Step-Up DC/DC Converters - H&M Semiconductor
Description
FEATURES
■ Low Quiescent Current: 20μA in Active Mode <1μA in Shutdown Mode
■ Operates with VIN as Low as 1V ■ Low VCESAT Switch: 250mV at 300mA ■ Uses Small Surface Mount Components
■ High Output Voltage: Up to 34V ■ Low Profile (1mm) ThinSOTTM Package
APPLICATIO S
■ LCD Bias
■ Handheld Computers
■ Battery Backup
■ Digital Cameras
TYPICAL APPLICATIO
1-Cell Li-Ion to 20V Converter for LCD Bias
VIN
L1 10µH
D1
2.
5V TO 4.
2V
VIN SW
R1 2M
HM1615
SHDN
FB
C1 4.
7µF
GND
R2 130k
C1: TAIYO YUDEN LMK316BJ475 C2: TAIYO YUDEN TMK316BJ105 D1: MOTOROLA MBR0530 L1: MURATA LQH3C100K24
20V 12mA
C2 1µF
HM1615
Micropower Step-Up DC/DC Converters in ThinSOT
DESCRIPTION
The HM1615/HM1615-1 are micropower step-up DC/DC converters in a 5-lead low profile (1mm) ThinSOT package.
The HM1615 is designed for higher power systems with a 350mA current limit and an input voltage range of 1.
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