ncv890201 ON Semiconductor, ncv890201 Datasheet
ncv890201
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ncv890201 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 NCV890201 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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... DRV Sync Out SYNCO GND VOLTAGES MONITORS EN Enable Oscillator PWM LOGIC ON OFF Sync Out − − 2 TSD Soft−Start RESET Figure 2. NCV890201 Block Diagram http://onsemi.com 2 CDRV DBST SW L1 VOUT CBST COUT DFW BST SYNCI Sync In FB COMP RCOMP CCOMP ...
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MAXIMUM RATINGS Rating Min/Max Voltage VIN Max Voltage VIN to SW Min/Max Voltage SW Min Voltage SW − 20ns Min/Max Voltage BST Min/Max Voltage BST to SW Min/Max Voltage on EN Min/Max Voltage COMP Min/Max Voltage FB Min/Max Voltage SYNCO ...
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... Output voltage to provide a regulated voltage to the Power Switch gate driver. 3 SYNCO Synchronization output. Turn−on of the Power Switch causes the SYNCO signal to fall. SYNCO rises half a switching period later. Connecting to the SYNCI pin of another NCV890201 causes them to switch out−of−phase 4 GND Battery return, and output voltage ground reference ...
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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 SYNCHRONIZATION SYNCO Output Pulse Duty Ratio SYNCO Output Pulse Falltime SYNCO Output Pulse Risetime SYNCI ...
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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 160 140 120 100 −50 − JUNCTION TEMPERATURE (°C) J Figure 16. SYNCI Input Resistance vs. Junction Temperature −50 ...
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TYPICAL CHARACTERISTICS CURVES −50 − JUNCTION TEMPERATURE (°C) J Figure 22. Hiccup Mode Switching Frequency vs. Junction Temperature 3.1 3.0 2.9 V DRVSTT 2.8 V ...
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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. The NCV890201 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. The NCV890201 withstands input voltages ...
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... When the switching frequency is controlled by the SYNCI input, the SYNCO pin is held low. Synchronization starts within soft−start completion. A rising edge at the SYNCI pin causes an NCV890201 to immediately turn on the power switch. If another rising edge CDRV2 DBST2 ...
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... When operating in continuous conduction mode (CCM), the output voltage is equal to the input voltage multiplied by the duty ratio. Because the NCV890201 needs a sufficient bootstrap voltage to operate, its duty cycle cannot be 100%: it needs a minimum off time ( periodically re− ...
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... 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 NCV890201. However, because of the high switching frequency extra care has to be taken. − Minimize the area of the power current loops: Input capacitor ³ ...
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... FOR END OF TERMINAL LEAD AT EDGE OF PACKAGE. MILLIMETERS DIM MIN MAX A 0.80 1. 0.00 0.05 A3 0.20 REF b 0.18 0.30 D 3.00 BSC D2 2.40 2.60 E 3.00 BSC E2 1.70 1.90 e 0.50 BSC K 0.19 TYP L 0.35 0.45 0.00 0.03 L1 1.8508 3.3048 0.5000 PITCH ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCV890201/D ...