AP3041 BCDSEMI | Alldatasheet

Document overview

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Technical content

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
  • 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
  • LCD Display Modules

Figure 1. Package Type of AP3041

Figure 2. Pin Configuration of AP3041 (Top View)

Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Pin Description Pin Number Pin Name Function

1 CT Capacitor setting 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 used to set start-up and shutdown level

4 EN Enable pin

5 VIN Input supply pin. This pin must be locally bypassed

6 VCC This pin should be bypassed 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

This pin can be used to drive the external MOSFET. The logic o f the driver signal is controlled by that of PWM pin and the signal phase 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 used to set

11 CS Sense switch current pin, which is used for current mode control

and for current limit. The current limit voltage is 500mV 12 SC Slope compensation for current sense. A resistor between SC and GND will program the slope compensation

13 SS/COMP

An external soft-start time capac itor 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 used 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. Please refer to the application circuit

Figure 3. Functional Block Diagram of AP3041

Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

Ordering Information

C i r c u i t T y p e G 1 : G r e e n P a c k a g e M : S O I C - 1 6 Package Temperature Range Part Number Marking ID Packing Type SOIC-16 -40 to 85°C AP3041M-G1 AP3041M-G1 Tube 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 VIN 30 V VCC Pin V oltage VCC 20 V OUT Pin V oltage VOUT 20 V FAULT Pin V oltage VFAULT 20 V FB Pin V oltage VFB 20 V UVLO Pin V oltage VUVLO 7 V CS Pin V oltage VCS 20 V SC Pin V oltage VSC 7 V FLAG Pin V oltage VFLAG 7 V SS/COMP Pin V oltage VSS/COMP 7 V RT Pin Voltage VRT 7 V PWM Pin V oltage VPWM 7 V EN Pin V oltage VEN 30 V OV Pin V oltage VOV 7 V Thermal Resistance (Junction to Ambient, No Heat Sink, Free Air) θJA 82 ºC/W Blank: Tube TR: Tape & Reel

Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Absolute Maximum Ratings (Note 1, Continued) Parameter Symbol Value Unit Operating Junction Temperature TJ 150 ºC Storage Temperature TSTG -65 to 150 ºC Lead Temperature (Soldering, 10 sec) TLEAD 260 ºC ESD (Human Body Model) 2000 V ESD (Machine Model) 200 V Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Co nditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage V IN 5 27 V Operating Frequency f 0.1 1 MHz Operating Temperature Range T J -40 85 ºC

Electrical Characteristics

VCC=12V, VEN=3.3V, TA=25ºC, unless otherwise specified. Parameter Symbol Conditi ons Min Typ Max Unit Input V oltage V IN 5 27 V Feedback V oltage V FB 490 500 510 mV Supply Current I CC V FB=VIN, no switching 1.5 5 mA Shutdown Supply Current I Q V EN=0 1 2 μA VCC V oltage VCC 11V≤VIN≤27V 9.5 10.0 10.5 V 5V≤VIN≤10V , ICC=5mA V IN-0.5 V VCC Current Limit I CC-LIM 35 mA VCC Pin UVLO Rising Threshold V CC-HI 4.7 V VCC Pin UVLO Falling Hysteresis VCC-HYS 300 mV Oscillator Frequency f OSC 0.1 1 MHz SC Peak V oltage V SC_PK 530 680 mV UVLO Threshold V UVLO 1.20 1.25 1.30 V UVLO Hysteresis Current Source I UVLO-HYS 10 μA

Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Electrical Characteristics (Continued) VCC=12V, VEN=3.3V, TA=25ºC, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Current Limit Threshold V oltage V CS 0.48 0.5 0.52 V RT V oltage V RT 1.20 1.25 1.30 V Error Amplifier V oltage Gain G V 680 V /V Error Amplifier Transconductance G S 500 μA /V EN Pin Threshold V oltage VEH 2.5 V VEL 0.5 PWM Pin Threshold V oltage VIH 2.5 V VIL 0.5 OV Threshold V OV 2.25 V OV Hysteresis Current Source I OV-HYS 10 μA LED- Short to GND Detection Level V FB_LOW 0.3 V LED+ Short to LED-Detection Level V FB_HIGH 1.25 V LED+ Short to GND Detection Level V OV_LOW 0.3 V Diode Short Detection Level V CS_HIGH 1.75 V CT Current Source I CT 5 μA CT Threshold V oltage V CT 2.6 V Maximum Duty Cycle D MAX f=200kHz 80 90 % Soft-start Current Source I SS 16 22 28 μA OUT Pin Rising Time t RISE C OUT=1nF 20 ns OUT Pin Falling Time t FALL C OUT =1nF 20 OUT High V oltage Level (VCC-VOUT) V OUT-H I OUT=50mA 0.25 0.75 V OUT Low V oltage Level (VOUT) V OUT-L I OUT=50mA 0.25 0.75 V FAULT Pin Rising Time t RISE C FAULT=1nF 100 ns FAULT Pin Falling Time t FALL C FAULT=1nF 100 FAULT High V oltage Level (VCC-VFAULT) VFAULT_H IFAULT=10mA 0.25 0.75 V FAULT Low V oltage Level VFAULT_L IFAULT=10mA 0.25 0.75 V FAULT Minimum Pulse Width t D Oscillator Frequency=200kHz 20 μs FLAG High V oltage Level V FLAG-H IFLAG=500μA 2 V FLAG Low V oltage Level V FLAG-L IFLAG=500μA 0.25 0.75 V Thermal Shutdown Temperature T OTSD 160 ºC Thermal Shutdown Hysteresis T HYS 20 ºC

Figure 20. Typical Application Circuit of AP3041

Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041 Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions S O I C - 1 6 U n i t : m m ( i n c h ) 5.800(0.228) 6.240(0.246) 0.330(0.013) 0.510(0.020) 20:1 A 1.350(0.053) 1.650(0.065) B C S 1.000(0.039) 0.200(0.008) 20:1 B C 50:1 C-C 0.200(0.008) 0.250(0.010) 0.400(0.016) 1.270(0.050) 0.250(0.010) Depth 0.200(0.008) 0.250(0.010) 0.050(0.002) R0.200(0.008) R0.200(0.008) A 3.800(0.150) 4.040(0.159) 8°9.5° 8°7° 0.400(0.016)×45° Note: Eject hole, oriented hole and mold mark is optional. φ

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 BCD Semiconductor Manufacturing Limited MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 30920 Huntwood Ave. Hayward, CA 94544, U.S.A Tel : +1-510-324-2988 Fax: +1-510-324-2788 - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com BCD Semiconductor Manufacturing Limited IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

800 Yi Shan Road, Shanghai 200233, China

Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corp. 30920 Huntwood Ave. Hayward, CA 94544, USA Tel : +1-510-324-2988 Fax: +1-510-324-2788 - Headquarters BCD Semiconductor Manufacturing Limited No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel: +86-21-24162266, Fax: +86-21-24162277