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NCP1212P Datasheet(PDF) 5 Page - ON Semiconductor |
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NCP1212P Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 22 page NCP1212 http://onsemi.com 5 ELECTRICAL CHARACTERISTICS (For typical values TJ = 25°C, DMAX = 48%, for min/max values TJ = −25°C to +105°C, VCC = 16 V unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OSCILLATOR SECTION Oscillation Frequency, TJ = 25°C (DMAX = 48%, CT = 1.0 nF) FOSC−48 81 90 99 kHz Oscillation Frequency, TJ = 25°C (DMAX = 82%, CT = 1.0 nF) FOSC−82 72 80 88 kHz Frequency Change against Supply Voltage (VCC = 13 V to 25 V, TJ = 25°C) DFOSC−V − 0.02 − % Frequency Change against Temperature (VCC = 16 V, TJ = −25°C to 105°C) DFOSC−T − 5.0 − % CURRENT SENSE SECTION Maximum Current Sense Input Threshold VCS 0.96 1.0 1.16 V Propagation Delay (Current Sense to Gate after LEB Blanking) TPLH − 150 200 ns Leading Edge Blanking Time TLEB − 300 − ns SOFT−START SECTION Soft−Start Charge Current ISS 5.0 8.0 11 mA Overload Timing Discharge Current (Note 3) ISD−ISS 15 20 26 mA 48% Duty Cycle Selection Input Voltage Threshold VD48 − 2.5 − V 82% Duty Cycle Selection Input Voltage Threshold VD82 − 3.0 − V GATE DRIVER SECTION Gate Drive Sink Capability, VCC = 15 V, VDRV = 1.0 V IOL − 100 − mA Gate Drive Source Capability, VCC = 15 V, VDRV = 5.0 V (Note 4) IOH − 300 − mA Gate Drive Voltage (From 1.0 V to 11 V) Rise Time (CL = 1.0 nF, TJ = 25°C) Tr − 25 50 ns Gate Drive Voltage (From 11 V to 1.0 V) Fall Time (CL = 1.0 nF, TJ = 25°C) Tf − 25 50 ns IC POWER SUPPLY SECTION VCC Startup Threshold Voltage VCCTH 13.5 15 16.5 V VCC Overvoltage Lockout Threshold VCCOVLO 22.5 25 27.5 V VCC Undervoltage Lockout Threshold VCCUVLO 8.5 10 11.5 V Power Supply Current, before Startup (VCC = 12 V) IC1 − 0.15 0.26 mA Power Supply Current, Operating IC2 − 3.0 5.0 mA Power Supply Current, Shutdown (VCC = 15 V) IC3 − 3.0 − mA BROWNOUT DETECT SECTION (BOK) Brownout Input Threshold Voltage VBOK 1.14 1.21 1.27 V Brownout Hysteresis Current IBOK 38 45 54 mA MAXIMUM DUTY CYCLE SECTION Maximum Duty Cycle at Soft−Start Pin Voltage between 2.1 V and 2.8 V (2.1 V v VDMAX v 2.8 V) DMAX48 47 48 50 % Maximum Duty Cycle at Soft−Start Pin Voltage Higher than 3.0 V (VDMAX w 3.0 V) DMAX82 79 82 88 % 3. ISD is an internal current source not accessible externally. 4. The output voltage is internally clamped by 13.5 V Zener. |
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