Datasheet NCP1421 (ON Semiconductor) - 4
| Manufacturer | ON Semiconductor |
| Description | Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA |
| Pages / Page | 14 / 4 — NCP1421. ELECTRICAL CHARACTERISTICS. Characteristic. Symbol. Min. Typ. … |
| Revision | 7 |
| File Format / Size | PDF / 273 Kb |
| Document Language | English |
NCP1421. ELECTRICAL CHARACTERISTICS. Characteristic. Symbol. Min. Typ. Max. Unit. http://onsemi.com
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NCP1421
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NCP1421 ELECTRICAL CHARACTERISTICS
(VOUT = 3.3 V, TA = 25°C for typical value, −40°C v TA v 85°C for min/max values unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Operating Voltage VIN 1.0 − 5.0 V Output Voltage Range VOUT 1.5 − 5.0 V Reference Voltage VREF_NL 1.183 1.200 1.217 V (VOUT = 3.3 V, ILOAD = 0 A, CREF = 200 nF, TA = 25°C) Reference Voltage VREF_NL 1.174 − 1.220 V (VOUT = 3.3 V, ILOAD = 0 A, CREF = 200 nF, TA = −40°C to 85°C) Reference Voltage Temperature Coefficient TCVREF − 0.03 − mV/°C Reference Voltage Load Current IREF − 2.5 − mA (VOUT = 3.3 V, VREF = VREF_NL "1.5% CREF = 1.0 F) (Note 5) Reference Voltage Load Regulation VREF_LOAD − 0.05 1.0 mV (VOUT = 3.3 V, ILOAD = 0 to 100 A, CREF = 1.0 F) Reference Voltage Line Regulation VREF_LINE − 0.05 1.0 mV/V (VOUT from 1.5 V to 5.0 V, CREF = 1.0 F) FB Input Threshold (ILOAD = 0 mA, TA = 25°C) VFB 1.192 1.200 1.208 V FB Input Threshold (ILOAD = 0 mA, TA = −40°C to 85°C) VFB 1.184 − 1.210 V LBI Input Threshold (ILOAD = 0 mA, TA= −40_C to 85_C) VLBI 1.162 1.230 V LBI Input Threshold (TA = 25_C) VLBI 1.182 1.200 1.218 V Internal NFET ON−Resistance RDS(ON)_N − 0.3 − Internal PFET ON−Resistance RDS(ON)_P − 0.3 − LX Switch Current Limit (N−FET) (Note 7) ILIM − 1.5 − A Operating Current into BAT IQBAT − 1.3 3 A (VBAT = 1.8 V, VFB = 1.8 V, VLX = 1.8 V, VOUT = 3.3 V) Operating Current into OUT (VFB = 1.4 V, VOUT = 3.3 V) IQ − 8.5 14 A LX Switch MAX. ON−Time (VFB = 1.0 V, VOUT = 3.3 V, TA = 25_C) tON 0.46 0.72 1.15 s LX Switch MIN. OFF−Time (VFB = 1.0 V, VOUT = 3.3 V, TA = 25_C) tOFF − 0.12 0.22 s FB Input Current IFB − 1.0 50 nA True−Cutoff Current into BAT IBAT − 50 − nA (LBI/EN = GND, VOUT = 0, VIN = 3.3 V, LX = 3.3 V) BAT−to−LX Resistance (VFB = 1.4 V, VOUT = 3.3 V) (Note 7) RBAT_LX − 100 − LBI/EN Input Current ILBI − 1.5 50 nA LBO Low Output Voltage (VLBI = 0, ISINK = 1.0 mA) VLBO_L − − 0.2 V Soft−Start Time (VIN = 2.5 V, VOUT = 5.0 V, CREF = 200 nF) (Note 6) TSS − 1.5 20 ms EN Pin Shutdown Threshold (TA = 25°C) VSHDN 0.35 0.5 0.67 V Thermal Shutdown Temperature (Note 7) TSHDN − − 145 °C Thermal Shutdown Hysteresis (Note 7) TSDHYS − 30 − °C 5. Loading capability increases with VOUT. 6. Design guarantee, value depends on voltage at VOUT. 7. Values are design guaranteed.
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NCP1421 ELECTRICAL CHARACTERISTICS
(VOUT = 3.3 V, TA = 25°C for typical value, −40°C v TA v 85°C for min/max values unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Operating Voltage VIN 1.0 − 5.0 V Output Voltage Range VOUT 1.5 − 5.0 V Reference Voltage VREF_NL 1.183 1.200 1.217 V (VOUT = 3.3 V, ILOAD = 0 A, CREF = 200 nF, TA = 25°C) Reference Voltage VREF_NL 1.174 − 1.220 V (VOUT = 3.3 V, ILOAD = 0 A, CREF = 200 nF, TA = −40°C to 85°C) Reference Voltage Temperature Coefficient TCVREF − 0.03 − mV/°C Reference Voltage Load Current IREF − 2.5 − mA (VOUT = 3.3 V, VREF = VREF_NL "1.5% CREF = 1.0 F) (Note 5) Reference Voltage Load Regulation VREF_LOAD − 0.05 1.0 mV (VOUT = 3.3 V, ILOAD = 0 to 100 A, CREF = 1.0 F) Reference Voltage Line Regulation VREF_LINE − 0.05 1.0 mV/V (VOUT from 1.5 V to 5.0 V, CREF = 1.0 F) FB Input Threshold (ILOAD = 0 mA, TA = 25°C) VFB 1.192 1.200 1.208 V FB Input Threshold (ILOAD = 0 mA, TA = −40°C to 85°C) VFB 1.184 − 1.210 V LBI Input Threshold (ILOAD = 0 mA, TA= −40_C to 85_C) VLBI 1.162 1.230 V LBI Input Threshold (TA = 25_C) VLBI 1.182 1.200 1.218 V Internal NFET ON−Resistance RDS(ON)_N − 0.3 − Internal PFET ON−Resistance RDS(ON)_P − 0.3 − LX Switch Current Limit (N−FET) (Note 7) ILIM − 1.5 − A Operating Current into BAT IQBAT − 1.3 3 A (VBAT = 1.8 V, VFB = 1.8 V, VLX = 1.8 V, VOUT = 3.3 V) Operating Current into OUT (VFB = 1.4 V, VOUT = 3.3 V) IQ − 8.5 14 A LX Switch MAX. ON−Time (VFB = 1.0 V, VOUT = 3.3 V, TA = 25_C) tON 0.46 0.72 1.15 s LX Switch MIN. OFF−Time (VFB = 1.0 V, VOUT = 3.3 V, TA = 25_C) tOFF − 0.12 0.22 s FB Input Current IFB − 1.0 50 nA True−Cutoff Current into BAT IBAT − 50 − nA (LBI/EN = GND, VOUT = 0, VIN = 3.3 V, LX = 3.3 V) BAT−to−LX Resistance (VFB = 1.4 V, VOUT = 3.3 V) (Note 7) RBAT_LX − 100 − LBI/EN Input Current ILBI − 1.5 50 nA LBO Low Output Voltage (VLBI = 0, ISINK = 1.0 mA) VLBO_L − − 0.2 V Soft−Start Time (VIN = 2.5 V, VOUT = 5.0 V, CREF = 200 nF) (Note 6) TSS − 1.5 20 ms EN Pin Shutdown Threshold (TA = 25°C) VSHDN 0.35 0.5 0.67 V Thermal Shutdown Temperature (Note 7) TSHDN − − 145 °C Thermal Shutdown Hysteresis (Note 7) TSDHYS − 30 − °C 5. Loading capability increases with VOUT. 6. Design guarantee, value depends on voltage at VOUT. 7. Values are design guaranteed.
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