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AP3033 Datasheet

WHITE LED STEP-UP CONVERTER

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AP3033 pdf
WHITE LED STEP-UP CONVERTER
General Description
Features
Preliminary Datasheet
AP3033
The AP3033 is an inductor-based DC/DC boost con- · Up to 92% Efficiency
verter designed to drive LED arrays. 1.3A switching
current allows AP3033 to be used in different 7' to 10'
LCD panel backlights (3S8P LED arrays typically).
·
(VIN=9V, IOUT=160mA)
Up to 88% Efficiency
(VIN=5V, IOUT=160mA)
A constant frequency 1MHz PWM control scheme is · Fast 1MHz Switching Frequency
employed in this IC, which means tiny external com- · Wide Input Voltage Range: 3V to 16V
ponents can be used. Specifically, 1mm tall 10µH · Low 200mV Feedback Voltage
inductor and 10µF output capacitor for the typical · Output Over Voltage Protection
application is sufficient.
· Cycle by Cycle Current Limit: 1.3A
The over output voltage protection is equipped in
AP3033, which protects the IC under open load condi-
tion. The AP3033 includes UVLO, soft-start, standby
·
·
·
High Frequency PWM Dimming
Built-in Soft-start
Built-in Thermal Shutdown Function
mode, current limit and OTSD to protect the circuit.
· Under Voltage Lockout
The AP3033 is available in standard TSOT-23-6 pack-
age. Applications
· 7' to 10' LCD Panels
· Digital Photo Frame
· GPS Receiver
· Netbook
· PDVD
Jan. 2010 Rev. 1. 0
TSOT-23-6
Figure 1. Package Type of AP3033
BCD Semiconductor Manufacturing Limited
1


Diodes Semiconductor Electronic Components Datasheet

AP3033 Datasheet

WHITE LED STEP-UP CONVERTER

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AP3033 pdf
WHITE LED STEP-UP CONVERTER
Pin Configuration
KT Package
(TSOT-23-6)
Pin 1 Dot by Marking
SW
GND
FB
1
2
3
6 VIN
5 OV
4 CTRL
Preliminary Datasheet
AP3033
Figure 2. Pin Configuration of AP3033 (Top View)
Pin Description
Pin Number Pin Name
Function
1 SW Switch Pin. Connect external inductor and Schottky
2 GND Ground Pin
3 FB Voltage Feedback Pin. 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. If logic low time is more than about 0.45ms and then enable the IC, the
4 CTRL AP3033 will soft start to protect system departments. If logic low time is less than about
0.45ms and then enable the IC, the AP3033 will hold on standby mode and start directly to
achieve high frequency dimming
5 OV Over-voltage Protection Input Pin. Connect to the output directly or connect to the VOUT
through a resistor divider to set the OVP voltage. On OVP condition, the output voltage will
be clamped
6 VIN Input Supply Pin. Must be locally bypassed
Jan. 2010 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
2


Part Number AP3033
Description WHITE LED STEP-UP CONVERTER
Maker BCD Semiconductor
Total Page 13 Pages
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