LP3301 Datasheet, PDF (1/6 Pages) Lowpower Semiconductor inc – 1.5MHz Fixed-Frequency PWM Operation

Preliminary Datasheet
LP3301
1.5MHz Step-up DC/DC Converter
General Description
The LP3301 is a 1.5MHz PWM boost
switching regulator designed for constant-
Voltage driver applications.
The LP3301 implements a constant
frequency 1.5MHz PWM control scheme. The
high frequency PWM operation also saves
board space by reducing external component
sizes. To improve efficiency, the feedback
voltage is set to 1.25V.
Highly integration and internal compensation
network minimizes as 5 external component
counts. Optimized operation frequency can
meet the requirement of small LC filters value
and low operation current with high
efficiency.
Ordering Information
Features
High Efficiency: 85%
1.5MHz Fixed-Frequency PWM Operation
36V 500mA Integrated switch
Shutdown Supply Current:<1uA
Available in SOT23-5 Package
Built-in Over Voltage Protection of 29V
Minimize the External Component
RoHS Compliant and 100% Lead
(Pb)-Free
Pin Configurations
LP3301 □ □ □
F:Pb-Free
Package Type
B5: SOT-23-5
Typical Application Circuit
Applications
LCD Bias Supply
OLED Driver
GPS/PDA/Mobile phone
Marking information
Please view website.
Vin
1uF
5 _Vin
24V
3
1
10uH
IN5819
1uF
SW ¹
ON/OFF 4
R1
SHDN
182K
2 _{GND FB} 3
LP3301
R2
10K
Vout=(R1/R2+1)X1.25 V
LP3301 Boost Circuit
Vin
10uH
47K
10uF 0.1uF
5
1
Vin SW
4 _SHDN
2 _{GND FB} 3
LP3301
3
1
BAT54/SOT
1uF
+15V
4.7uF 0.1uF
100pF
2
1.1M
1
BAT54
100K
3
Vout=(R1/R2+1)X1.25 V
-15V
4.7uF
LP3301 Boost Circuit for LCD Bias
LP3301-datasheet Dec.-2005
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