®
LY1152
Rev. 1.2
Inverting DC/DC Controller (SOP)
FEATURES
GENERAL DESCRIPTION
2.4V ~ 7.0V Power supply.
Low shutdown current at 0.1uA (Typical).
Low quiescent current at 90.0uA (Typical).
Adjustable Output Voltage to -40V.
60KHz ~ 160KHz Switching Frequency.
High Efficiency with Low Cost External PNP
Bipolar Transistor.
Pulse Frequency Modulation Maintains High
Efficiency (80%).
The LY1152 is a high performance inverting DC/DC
controller, and the LY1152 designed to drive an
external power switch to generate adjustable
negative voltages. Output voltage can be scaled to
-40V.
The LY1152 quiescent current is about 90.0uA and
shutdown mode current can be reduced to 0.1uA.
In the LCD bias contrast application, efficiency of
80% can be achieved with low cost PNP bipolar
transistor drivers.
Lead free and green package available.
(RoHS Compliant)
Space Saving Package:
The LY1152 switching frequency can be around
60KHz to 160KHz range, and small size package is
ideally suited for powered portable equipments.
- 8-pin SOP package.
APPLICATION
Negative Voltage Supply.
Negative LCD Contrast Bias for
- Portable Data Collection Terminals.
- Notebook Computers.
PIN CONFIGURATION
LY1152 SOP8 (Top View)
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
1