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PDF LP3322 Data sheet ( Hoja de datos )
| Número de pieza | LP3322 | |
| Descripción | Constant Current Switching Regulator | |
| Fabricantes | Lowpowersemi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LP3322 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Preliminary Datasheet
LP3322
High Performance, Constant Current Switching
Regulator For 10PCS White LED In Series
General Description
Features
The LP3322 is a 1.1MHz PWM boost switching
regulator designed for constant- current white LED
driver applications. The LP3322 can drive a string of
up to 10 white LEDs in series or 3s9p LEDs from
3.6V, ensuring uniform brightness and eliminating
several ballast resistors. The LP3322 implements a
constant frequency 1.1MHz 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
200mV and 300mV, which reduces the power
dissipation in the current setting resistor. 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
LP3322
High Efficiency: 88%
1.1MHzFixed-Frequency PWM Operation
Maximum Output Voltage up to 36V
Operating Range : 2.7V to 5.5V
Shutdown Supply Current:<1uA
Available in SOT23-6 Package
Built-in 39V Over Voltage Protection
Minimize the External Component
RoHS Compliant and 100% Lead (Pb)-Free
Applications
WLED Backlight driver
OLED Backlight driver
PDA
MID/PTV
Typical Application Circuit
Vin
Cin
10uF
10uH
SD103
Cout
1uF
F: Pb-Free
Package:
B6: SOT23-6
FB Voltage
Default: VFB=200mV
A: VFB=300mV
Pin Configurations
6 Vin OUT 5
4
EN
3
FB
LP3322
VFB=200mV
R1
10
Marking information
Please view website.
(SOT23-6)
LP3322 – 00 Vesion 1.0 Datasheet Feb.-2013
www.lowpowersemi.com
Page 1 of 8
1 page  
Preliminary Datasheet
LP3322
LP3322 – 00 Vesion 1.0 Datasheet Feb.-2013
www.lowpowersemi.com
Page 5 of 8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LP3322.PDF ] | |
Hoja de datos destacado
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