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APW703615KC-TR Datasheet(PDF) 4 Page - Anpec Electronics Coropration |
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APW703615KC-TR Datasheet(HTML) 4 Page - Anpec Electronics Coropration |
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4 / 11 page  Copyright ANPEC Electronics Corp. Rev. A.1 - May, 2001 APW7036 www.anpec.com.tw 4 Electrical Characteristics Cont. Functional Pin Description UGATE (Pin 1) Connect UGATE pin to the synchronous PWM converter’s upper MOSFET gate. This pin provides the gate drive for the upper MOSFET. VCC (Pin 2) Provide a 12V bias supply for the IC to this pin. This pin also provides the gate bias charge for all the MOSFETs controlled by the IC. The voltage at this pin is monitored for Power-On Reset purposes. GATE (Pin 3) Connect GATE pin to the standard BUCK PWM converter’s MOSFET gate. This pin provides the gate drive for the MOSFET. PHASE2 (Pin 4) Connect the PHASE2 pin to the standard BUCK PWM converter’s MOSFET source. This pin is used to moni- tor the voltage drop across the MOSFET for over-cur- rent protection. PGOOD (Pin 5) PGOOD is an open collector output used to indicate the status of the output voltages. This pin is pulled low when the synchronous regulator output is not within 10% of the reference voltage or the other output is below under-voltage thresholds. NC (Pin 10, 13) No Connection. OCSET1 , 2 (Pin 17 , 6) Connect a resistor (R OCSET ) from this pin to the drain of the PWM converter’s MOSFET. R OCSET , an internal 200 µA current source (I OCSET ) , and the MOSFET’s on-resistance(r DS(ON)) set the converter over-current APW7036 Symbol Parameter Test Conditions Min. Typ. Max. Unit PWM Controllers Gate Drivers I LGATE LGATE Source V CC=12V, VLGATE=1V 1 A R LGATE LGATE Sink V LGATE= 1V 3 Ω Protection VSEN Over-Voltage (VSEN/V REF) VSEN Rising 115 120 % I OVP FAULT Souring Current V FAULT/RT=2.0V 8.5 mA I OCSET OCSET1,2 Current Source V OCSET= 4.5VDC 170 200 230 µA I SS Soft Start Current 28 µA Power Good VSEN Upper Threshold (VSEN/ V REF) VSEN1 Rising 110 % VSEN Under Voltage (VSEN/V REF) VSEN1 Rising 94 % VSEN Hysteresis (VSEN/ V REF) Upper /Lower Threshold 2 % V PGOOD PGOOD Voltage Low I PGOOD= -4mA 0.8 V |
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