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Diodes Semiconductor Electronic Components Datasheet

AP3032 Datasheet

WHITE LED STEP-UP CONVERTER

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AP3032 pdf
Data Sheet
WHITE LED STEP-UP CONVERTER
AP3032
General Description
The AP3032 is an inductor-based DC/DC boost
converter designed to drive up to 4 rows of LEDs
with 7 series for each in parallel for backlight.
A constant frequency 1MHz PWM control scheme is
employed in this IC, which means tiny external
components can be used. Specifically, 1mm tall
6.8μH inductor and 1µF aluminum output capacitor
for the typical application is sufficient.
The over output voltage protection is equipped in
AP3032, which protects the IC under open load
condition. The AP3032 includes UVLO, soft-start,
stand-by mode, current limiting and OTSD to protect
the circuit under over load condition
The AP3032 is available in SOT-23-6 package.
Features
Efficiency Up to 81%VIN=5V, IOUT=80mA
• Drives up to 4 Rows of WLEDs with 7 Series
for Each in Parallel (VIN=5V)
• Fast 1 MHz Switching Frequency
• Wide Input Voltage Range: 2.7V to 9V
• Low Feedback Voltage: 200mV
• Output Over Voltage Protection
• Cycle-by-cycle Current Limit: 1.4A
Built in Soft-start
Built in Standby-mode to Achieve High
Frequency PWM Dimming
Built in Thermal Shutdown Function
Under Voltage Lockout
Applications
7’ to 10’ LCD Panels
• Digital Photo Frame
• GPS Receiver
SOT-23-6
Dec. 2012 Rev. 1. 2
Figure 1. Package Type of AP3032
BCD Semiconductor Manufacturing Limited
1


Diodes Semiconductor Electronic Components Datasheet

AP3032 Datasheet

WHITE LED STEP-UP CONVERTER

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AP3032 pdf
WHITE LED STEP-UP CONVERTER
Pin Configuration
K Package
(SOT-23-6)
Pin 1 Mark
SW 1
GND 2
FB 3
6 VIN
5 OV
4 CTRL
Data Sheet
AP3032
Pin Description
Figure 2. Pin Configuration of AP3032 (Top View)
Pin Number
1
2
3
4
5
6
Pin Name
SW
GND
FB
CTRL
OV
VIN
Function
Switch pin. Connect external inductor and Schottky
Ground
Voltage feedback. Reference voltage is 200mV
Enable and dimming control pin. Connect to a high input to enable
the IC or a low input to disable the IC. Connect to a PWM input to
achieve dimming control If logic low time is less than about 0.7
ms, AP3032 is hold on standby mode, at which it shut down the
power switch but shield the soft-start function, to achieve high
frequency dimming
Over voltage protection input. Connect to the output directly. On
OVP condition, the output voltage will clamp
Input supply pin. Must be locally bypassed
Dec. 2012 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2


Part Number AP3032
Description WHITE LED STEP-UP CONVERTER
Maker BCD Semiconductor
Total Page 13 Pages
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