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APW8722A Dataheets PDF



Part Number APW8722A
Manufacturers ANPEC
Logo ANPEC
Description PWM Controller
Datasheet APW8722A DatasheetAPW8722A Datasheet (PDF)

APW8722/A/B/C/D 5V to 12V Single Buck Voltage Mode PWM Controller Features • • • Wide 5V to 12V Supply Voltage Power-On-Reset Monitoring on VCC Excellent Output Voltage Regulations - 0.6V Internal Reference for APW8722/A/D - 0.8V Internal Reference for APW8722B/C - ±0.6% Over-Temperature Range General Description The APW8722 is a voltage mode, fixed 200kHz/300kHz/ 600kHz switching frequency, synchronous buck converter. The APW8722 allows wide input voltage that is either a single 5~12V or two .

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APW8722/A/B/C/D 5V to 12V Single Buck Voltage Mode PWM Controller Features • • • Wide 5V to 12V Supply Voltage Power-On-Reset Monitoring on VCC Excellent Output Voltage Regulations - 0.6V Internal Reference for APW8722/A/D - 0.8V Internal Reference for APW8722B/C - ±0.6% Over-Temperature Range General Description The APW8722 is a voltage mode, fixed 200kHz/300kHz/ 600kHz switching frequency, synchronous buck converter. The APW8722 allows wide input voltage that is either a single 5~12V or two supply voltage(s) for various applications. A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A builtin soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.6V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The APW8722 provides excellent output voltage regulations against load current variation. The controller’ s over-current protection monitors the output current by using the voltage drop across the RDS (ON) of low-side MOSFET, eliminating the need for a current sensing resistor that features high efficiency and low cost. In addition, the APW8722 also integrates excellent protection functions. The over-voltage protection (OVP) , under-voltage protection (UVP). OVP circuit which monitors the FB voltage to prevent the PWM output from over voltage, and UVP circuit which monitors the FB voltage to prevent the PWM output from under voltage or short circuit. The APW8722 is available in SOP-8P packages • • • • Integrated Soft-Start Voltage Mode PWM Operation with External Compensation Up to 90% Duty Ratio for Fast Transient Response Constant Switching Frequency - 300kHz ±10% for APW8722/B - 200kHz ±10% for APW8722C - 600kHz ±10% for APW8722A/D • • • • • • • Integrated Bootstrap Forward P-CH MOSFET 50% Under-Voltage Protection 125% Over-Voltage Protection Adjustable Over-Current Protection Threshold - Using the RDS(ON) of Low-Side MOSFET Shutdown Control by COMP SOP-8P Package Lead Free and Green Devices Available (RoHS Compliant) Applications • • • • • • Graphic Cards DSL, Switch HUB Wireless Lan Notebook Computer Mother Board LCD Monitor/TV ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright © ANPEC Electronics Corp. Rev. A.3 - Jun., 2013 1 www.anpec.com.tw Free Datasheet http://www.datasheet4u.com/ APW8722/A/B/C/D Simplified Application Circuit VVCC VIN 5 7 OFF ON VCC COMP BOOT UGATE 1 2 VOUT APW8722 PHASE 8 LGATE 6 FB GND 3 4 Ordering and Marking Information APW8722/A/B/C/D Assembly Material Handling Code Temperature Range Package Code Package Code KA : SOP-8P Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device APW8722/A/B/C/D KA : APW8722X XXXXX X ¡V A/B/C/D XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Pin Configuration APW8722/B/C/D BOOT 1 UGATE 2 GND 3 LGATE/OCSET 4 8 7 6 5 PHASE COMP FB VCC BOOT 1 UGATE 2 OCSET 3 LGATE 4 APW8722A 8 7 6 5 PHASE COMP FB VCC 9 GND 9 GND SOP-8P (top view) Copyright © ANPEC Electronics Corp. Rev. A.3 - Jun., 2013 2 SOP-8P (top view) www.anpec.com.tw Free Datasheet http://www.datasheet4u.com/ APW8722/A/B/C/D Absolute Maximum Ratings (Note 1) Symbol VVCC VBOOT Parameter VCC Supply Voltage (VCC to GND) BOOT Supply Voltage (BOOT to PHASE) BOOT Supply Voltage (BOOT to GND) UGATE Voltage (UGATE to PHASE) > 20ns < 20ns LGATE Voltage (LGATE to GND) > 20ns < 20ns PHASE Voltage (PHASE to GND) FB ,COMP to GND POK to GND TJ TSTG TSDR Maximum Junction Temperature Storage Temperature Maximum Lead Soldering Temperature, 10 Seconds > 20ns < 20ns Rating -0.3 ~ 16 -0.3 ~ 16 -0.3 ~ 32 -0.3 ~ VBOOT+0.3 -5 ~ VBOOT+5 -0.3 ~ VVCC+0.3 -5 ~ VVCC+5 -0.3 ~ 16 -5 ~ 25 -0.3 ~ 7 -0.3~VCC+0.3 150 -65 ~ 150 260 Unit V V V V V V V V V V V °C °C °C VUGATE VLGATE VPHASE Note1: Stresses beyond 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 rating conditions for extended periods may affect device reliability. Thermal Characteristics.


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