®
LY1152
Rev. 1.2
Inverting DC/DC Controller (SOP)
GENERAL DESCRIPTION
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.
The LY1152 switching frequency can be around
60KHz to 160KHz range, and small size package is
ideally suited for powered portable equipments.
FEATURES
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%).
Lead free and green package available.
(RoHS Compliant)
Space Saving Package：
- 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
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LYONTEK [ Lyontek Inc. ]
