Preliminary Datasheet Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041
General Description
The AP3041 is a current mode high voltage low-side channel MOSFET controller, which is ideal for boost regulators. It contains all the features needed to implement single-ended primary topology DC/DC converters.
河中石兽原文及翻译The input voltage of AP3041 ranges from 5V to 27V. Its operation frequency is adjustable from 100kHz to 1MHz.
The AP3041 has UVLO (Under Voltage Lock Out) circuit. It us two external resistors to t the UVLO voltage. The AP3041 also has an over output voltage protection to limit the output voltage. The OVP voltage can be t through external resistors. If the output voltage is higher than the OVP high threshold point, it will disable the driver and the system is latched up. The output short circuit protection as well as LED low side short to ground detection function can be applied in system.
The AP3041 has other protection functions, such as LED short protection, LED high side short to ground protection, diode short protection, over current protection, over temperature protection and so on. The AP3041 is available in SOIC-16 package. Features
• Input Voltage Range: 5V to 27V
• 1A Peak and 10V MOSFET Gate Driver
• 20ns Quick MOSFET Gate Driver
• Duty Cycle Limit of 90%
• Programmable UVLO
• PWM Dimming Control
• Programmable Over Voltage Protection
• LED Open Protection
• LED Short Circuit Protection
• Diode Short Circuit Protection
• Output Short Circuit Protection
什么圆睁• LED Low-side Short to Ground Detection
• OV Pin Under Voltage Protection
• Over Current Protection
• Programmable Slope Compensation
• Adjustable Soft-start
• Adjustable Protection Delay
• Fault Status Indication
• Adjustable Operation Frequency from 100kHz to 1MHz
• Over Temperature Protection Applications
• LED Lighting
• LED TV
蛋挞怎么烤• LCD Display Modules
Figure 1. Package Type of AP3041
SOIC-16
Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041
Pin Configuration
M Package
(SOIC-16)
Figure 2. Pin Configuration of AP3041 (Top View)
Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041
Pin Description
Pin Number
Pin Name Function
1 CT Capacitor tting shut down delay time 2
OV
Over output voltage protection pin
3 UVLO
Two resistors connected from this pin to GND and the power
supply respectively are ud to t start-up and shutdown level
4 EN Enable pin
5 VIN Input supply pin. This pin must be locally bypasd 6
VCC
This pin should be bypasd to GND with a ceramic capacitor
7 OUT
Connect this pin to the gate of external MOSFET, the gate driver has 1A peak current capability
8 GND Ground
9 FAULT
美丽的她This pin can be ud to drive the external MOSFET. The logic of the driver signal is controlled by that of PWM pin and the signal pha of them is the same. This pin is pulled to ground under fault condition of OVP, UVLO, OTP, diode short circuit and LED short circuit.
10 RT
An external resistor connected from this pin to GND is ud to t
the operating frequency
11 CS
Sen switch current pin, which is ud for current mode control
and for current limit. The current limit voltage is 500mV
12 SC
Slope compensation for current n. A resistor between SC and
GND will program the slope compensation
13 SS/COMP An external soft-start time capacitor is placed from this pin to GND and is charged by an internal 20μA current source to control
regulator soft-start time.
Compensation pin. This pin is the output of the internal error amplifier.
14 FB Voltage feedback pin. The reference voltage is 500mV
15 PWM
This pin can be connected to current matched chip and receives
error signal ud to shut down the system
16 FLAG Fault condition output pin. When the output is in short circuit
condition, the FLAG outputs logic low to shut down the power
path. Plea refer to the application circuit
Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041
Functional Block Diagram
CT
OV
UVLO EN
VIN
VCC
OUT GND
FLAG FB
SS/COMP SC
CS
RT GND 10A 10A
OVP OTSD
SAW
PWM
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FAULT
Figure 3. Functional Block Diagram of AP3041
Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Ordering Information
AP3041 -
Circuit Type G1: Green
Package
M: SOIC-16
Package Temperature
Range
Part Number Marking ID土豆泥做法
Packing
Type
AP3041M-G1 AP3041M-G1 Tube
SOIC-16 -40 to 85°C
AP3041MTR-G1 AP3041M-G1 Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Absolute Maximum Ratings (Note 1)
Parameter Symbol Value
Unit
Input V oltage V IN30 V VCC Pin V oltage V CC20 V OUT Pin V oltage V OUT20 V
一副对联>人怕出名猪怕壮是什么生肖
FAULT Pin V oltage V
FAULT
20 V FB Pin V oltage V FB20 V UVLO Pin V oltage V UVLO7 V CS Pin V oltage V CS20 V SC Pin V oltage V SC7 V FLAG Pin V oltage V FLAG7 V SS/COMP Pin V oltage V SS/COMP7 V RT Pin V oltage V RT7 V PWM Pin V oltage V PWM7 V EN Pin V oltage V EN30 V OV Pin V oltage V OV7 V
Thermal Resistance (Junction to Ambient, No Heat Sink, Free Air) θJA
82ºC/W Blank: Tube
TR: Tape & Reel
