전자부품 데이터시트 검색엔진 |
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UC27221 데이터시트(PDF) 3 Page - Texas Instruments |
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UC27221 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 34 page UCC27221 UCC27222 SLUS486B − AUGUST 2001 − REVISED JULY 2003 3 www.ti.com ELECTRICAL CHARACTERISTICS VDD = 12-V, 1-µF capacitor from VDD to GND, 1-µF capacitor from VHI to SW, 0.1-µF and 2.2-µF capacitor from PVLO to PGND, PVLO tied to VLO, TA = −40_C to 105_C for the UCC2722x, TA = TJ (unless otherwise noted) VLO regulator PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDD = 12 V, IVLO = 0 mA 6.2 6.5 6.8 Regulator output voltage VDD = 20 V, IVLO = 0 mA 6.2 6.5 6.8 V Regulator output voltage VDD = 8.5 V, IVLO = 100 mA 6.1 6.5 6.9 V Line Regulation VDD = 12 V to 20 V 2 10 mV Load Regulation IVLO = 0 mA to 100 mA 15 40 mV Short-circuit current(1) VDD = 8.5 V 220 mA Dropout voltage, (VDD at 5% VLO drop) VLO = 6.175 V, IVLO = 100 mA 7.1 7.8 8.5 V undervoltage lockout PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Start threshold voltage Measured at VLO 3.30 3.82 4.40 Minimum operating voltage after start 3.15 3.70 4.25 V Hysteresis 0.07 0.12 0.20 V bias currents PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VLO bias current at VLO (ON), 5 V applications only VLO = 4.5 V, VDD = no connect 3.6 4.7 5.8 VDD bias current VDD = 8.5 V 5.5 7.1 8.5 mA VDD bias current fIN = 500 kHz, No load on G1/G2 5.5 10 20 mA input command (IN) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT High-level input voltage 10 V < VDD < 20 V 3.3 3.6 3.9 V Low-level input voltage 10 V < VDD < 20 V 2.2 2.5 2.8 V Input bias current VDD = 15 V 1 µA input (SWS) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT High-level input threshold voltage fIN = 500 kHz, tON, G2 maximum, G2S = 0.0 V 1.4 2.0 2.6 V Low-level input threshold voltage fIN = 500 kHz, tON, G2 minimum, G2S = 0.0 V 0.7 1.0 1.3 V Low-level input threshold voltage fIN = 500 kHz, tON, G1 minimum −100 −300 −500 mV Input bias current SWS = 0.0 V −0.9 −1.2 −1.5 mA input (G2S) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT High-level input voltage fIN = 500 kHz, tON, G2 maximum, SWS = 0.0 V 1.4 2.0 2.6 V Low-level input voltage fIN = 500 kHz, tON, G2 minimum, SWS = 0.0 V 0.7 1.0 1.3 V Input bias current G2S = 0 V −370 −470 −570 µA NOTE 1: Ensured by design. Not production tested. UCC27221 Not Recommended For New Designs |
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