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AP3612 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited

Part # AP3612
Description  Boost Type LED Driver with 12-Channel Current Source
PDF  18 Pages
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Manufacturer  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Direct Link  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited

AP3612 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited

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Preliminary Datasheet
Boost Type LED Driver with 12-Channel Current Source
AP3612
Aug. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
1
General Description
The AP3612 is a high efficiency boost controller with
12-string current sources for driving WLED backlight.
It operates over a wide input voltage range from 4.5V
to 33V.
The current of 12 strings are simply programmed
from 20mA to 75mA with an external resistor. The
current matching between each string is 1.5% (Typ).
Its operating frequency can be adjusted from 0.1MHz
to 1MHz.
The AP3612 features Cycle-by-cycle Current Limit,
Soft Start, Under Voltage Lock Out (UVLO)
protection, programmable OVP, Over Temperature
Protection (OTP), open/short LED protection, VOUT
short protection and Schottky diode short-circuit
protection.
The AP3612 is available in HSOP-28 and SOIC-24
packages.
Features
•
Input Voltage Range: 4.5V to 33V
•
Drives up to 12 Strings in Parallel, 75mA per
String
•
Programmable WLED Current from 20mA to
75mA
•
Adjustable Operating Frequency: 100kHz to
1MHz
•
String-to-string Current Matching Accuracy:
1.5%
•
Built-in OCP, OTP, UVLO
•
External PWM Dimming
•
Open/Short LED Protection
•
Programmable Soft Start
•
Programmable OVP
•
Schottky Diode/Inductor Short-circuit Protection
•
VOUT Short/Schottky Diode Open Protection
Applications
•
LCD Monitor
•
LCD Display Module
•
LCD TV
Figure 1. Package Types of AP3612
HSOP-28
SOIC-24


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