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AP3710 Dataheets PDF



Part Number AP3710
Manufacturers BCD Semiconductor
Logo BCD Semiconductor
Description LOW POWER PWM CONTROLLER
Datasheet AP3710 DatasheetAP3710 Datasheet (PDF)

Data Sheet LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER General Description Features AP3710 The AP3710 is a green-mode PWM controller, its main applications are low power supplies such as offline battery chargers, adapters, STB and other auxiliary supplies, where the needs for low no load power, low total cost and high reliability are all required. The functional blocks of AP3710 include: under voltage lockout with low start-up current; precise voltage reference for internal comparators; P.

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Data Sheet LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER General Description Features AP3710 The AP3710 is a green-mode PWM controller, its main applications are low power supplies such as offline battery chargers, adapters, STB and other auxiliary supplies, where the needs for low no load power, low total cost and high reliability are all required. The functional blocks of AP3710 include: under voltage lockout with low start-up current; precise voltage reference for internal comparators; PWM comparator with current limit control, feedback signal and bandgap input; short circuit comparator and open circuit protection for opto-coupler. The AP3710 operates at a fixed 60kHz switching frequency, its output connects to the emitter of high voltage NPN transistor or the source of MOSFET. In normal mode, it works as a switch to turn on or turn off the external transistor. In failure modes like open loop, over voltage or overload due to short circuit, the chip enters into an auto restart mode controlled by the internal protection unit. The AP3710 is available in SOIC-8 and DIP-8 packages. · Current Mode Control with Skip Cycle Capability · Low Start-up Current: 0.25mA · Low Operating Current: 0.45mA · Output Current Capacity: 900mA · Fixed Switching Frequency: 60kHz · Frequency Dithering for Low EMI · Under-Voltage Lockout with Hysteresis · Built-in Slope Compensation · Short Circuit Protection · Open and Short Circuit Protection for Opto- Coupler · Maximum Input Power is 0.2W under No Load · Maximum Input Power is 1W under 0.5W Load · Low Total Cost Solution Applications · Adapters · Battery Chargers · Set Top Boxes · Auxiliary Supplies · DVD SOIC-8 DIP-8 Jan. 2013 Rev. 1. 4 Figure 1. Package Types of AP3710 BCD Semiconductor Manufacturing Limited 1 LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER Pin Configuration Data Sheet AP3710 M Package (SOIC-8) GND VCC NC OUT 1 2 3 4 8 NC 7 VA 6 NC 5 VSEN P Package (DIP-8) GND VCC NC OUT 1 2 3 4 8 NC 7 VA 6 NC 5 VSEN Figure 2. Pin Configuration of AP3710 (Top View) Pin Description Pin Number 1 2 3, 6, 8 4 5 7 Pin Name GND VCC NC OUT VSEN VA Function Power supply ground The power supply of the IC and this terminal is also used for the feedback control Not connected The PWM output is directly connected to the emitter of NPN transistor or the source of MOSFET It is used for line voltage compensation, and PWM uses this to terminate the output switch conduction It is used for short circuit protection, and this terminal will be pulled down to low level when short circuit happens at the load side Jan. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2 LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER Functional Block Diagram Data Sheet AP3710 VCC 2 5 VSEN GND 1 UVLO COMPARATOR VREF (1.2V) - + BIAS VREF (1.2V) PWM COMPARATOR +FB - START-UP CURRENT SOURCE PWM CONTROL DISCHARGE COMPARATOR VREF (1.2V) _+ SLOP COMPENSATION DISCHARGE LOGIC OSCILLATOR DRIVER 4 OUT 7 VA Figure 3. Functional Block Diagram of AP3710 Jan. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 3 LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER Ordering Information AP3710 - Data Sheet AP3710 Circuit Type Package M: SOIC-8 P: DIP-8 E1: Lead Free G1: Green TR: Tape and Reel Blank: Tube Package SOIC-8 DIP-8 Switching Frequency 60kHz 60kHz Temperature Range -40 to 85oC -40 to 85oC Part Number Lead Free Green AP3710M-E1 AP3710M-G1 AP3710MTR-E1 AP3710MTR-G1 AP3710P-E1 AP3710P-G1 Marking ID Lead Free Green 3710M-E1 3710M-G1 3710M-E1 3710M-G1 AP3710P-E1 AP3710P-G1 Packing Type Tube Tape & Reel Tube BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages. Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Voltage at OUT Analog Input at VSEN Output Current at OUT Power Dissipation Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10s) ESD (Machine Model) ESD (Human Body Model) Value -0.3 to 6.3 -0.3 to 40 -0.3 to 6.3 Internally limited 0.6 150 -65 to 150 300 250 3000 Unit V V V A W oC oC oC V 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 Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Jan. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 4 LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER Electrical Characteristics VCC=4V, TJ=25oC, unless otherwise specified. Parameter Symbol Conditions UVLO SECTION Turn on Threshold Voltage VCC (on) Turn off Threshold Voltage VCC (off) Discharge Voltage VDIS STANDBY CURRENT SECTION Start-up Current Operating Current VCC Zener Voltage Dynamic Impedance INTE.


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