ncv8901 ON Semiconductor, ncv8901 Datasheet
ncv8901
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ncv8901 Summary of contents
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... The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV8901 is capable of converting the typical 4 automotive input voltage range to outputs as low as 3 constant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures ...
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... VIN VIN CIN 3.3 V Reg DRV GND VOLTAGES MONITORS EN Enable Oscillator PWM LOGIC ON OFF + + S + − − 1 TSD Soft−Start RESET Figure 2. NCV8901 Block Diagram http://onsemi.com 2 CDRV DBST SW L1 VOUT CBST COUT DFW BST FB COMP RCOMP CCOMP ...
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... PCB with 1 oz. copper thickness. RECOMMENDED OPERATING CONDITIONS: V Range IN Ambient Temperature Range Symbol NCV8901 NCV8901A NCV8901 NCV8901A Human Body Model Machine Model Charge Device Model Rating http://onsemi.com 3 Value −0 −0 − ...
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PIN FUNCTION DESCRIPTIONS Pin No. Symbol 1 VIN Input voltage from battery. Place an input filter capacitor in close proximity to this pin. 2 DRV Output voltage to provide a regulated voltage to the Power Switch gate driver. 3 GND ...
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ELECTRICAL CHARACTERISTICS for the temperature range −40°C ≤ T ≤ 150°C unless noted otherwise, and are guaranteed by test, design or statistical correlation.) J Parameter QUIESCENT CURRENT Quiescent Current, shutdown Quiescent Current, enabled UNDERVOLTAGE LOCKOUT − VIN (UVLO) UVLO Start ...
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ELECTRICAL CHARACTERISTICS for the temperature range −40°C ≤ T ≤ 150°C unless noted otherwise, and are guaranteed by test, design or statistical correlation.) J Parameter POWER SWITCH ON Resistance Leakage current VIN to SW Minimum ON Time Minimum OFF Time ...
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TYPICAL CHARACTERISTICS CURVES −50 − JUNCTION TEMPERATURE (°C) J Figure 4. Shutdown Quiescent Current vs. Junction Temperature 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 ...
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TYPICAL CHARACTERISTICS CURVES 1.4 1 0.8 0 0.4 0.2 −50 − JUNCTION TEMPERATURE (°C) J Figure 10. Error Amplifier Transconductance vs. Junction Temperature ...
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TYPICAL CHARACTERISTICS CURVES −50 − JUNCTION TEMPERATURE (°C) J Figure 16. Minimum On Time vs. Junction Temperature 1.70 1.65 1.60 1.55 1.50 1.45 1.40 −50 ...
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TYPICAL CHARACTERISTICS CURVES 3.1 3.0 2.9 V DRVSTT 2.8 V DRVSTP 2.7 2.6 2.5 −50 − JUNCTION TEMPERATURE (°C) J Figure 22. DRV Reset Threshold vs. Junction Temperature ...
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... An Undervoltage Lockout (UVLO) circuit monitors the input, and inhibits switching and resets the Soft−start circuit if there is insufficient voltage for proper regulation. Both the NCV8901 and the NCV8901A can regulate a 3.3 V output with input voltages above 4.5 V and a 5.0 V output with an input above 6.5 V. ...
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... When the skip cycle repetition frequency gets too low, the bootstrap voltage collapses and the regulator stops switching. Practically, this means that the NCV8901 needs a minimum load to operate correctly: to cover all conditions of input voltage and temperature, this minimum load is 8 mA. ...
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... MHz ripple). PCB LAYOUT RECOMMENDATION As with any switching power supplies, there are some guidelines to follow to optimize the layout of the printed circuit board for the NCV8901. However, because of the high switching frequency extra care has to be taken. ...
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... PITCH DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCV8901/D ...