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BQ24721 Datasheet(PDF) 7 Page - Texas Instruments |
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BQ24721 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 60 page  www.ti.com bq24721, bq24721C SLUS683C – NOVEMBER 2005 – REVISED DECEMBER 2006 ELECTRICAL CHARACTERISTICS (continued) 8 Vdc ≤ V (VCC) ≤ 24 Vdc, 0°C ≤ TJ ≤ 125°C, all voltages with respect to AGND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT QUIESCENT CURRENT – NO ADAPTER CONNECTED I(VCC,PVCC) VCC and PVCC quiescent current I(VCC,PVCC) = ( I(VCC) + I(PVCC) ) at V(VCC) = V(PVCC) = 16.8 V 254 µA I(ACP,ACN) ACP and ACN quiescent current I(ACP,ACN) = ( I(ACP) + I(ACN) ) at V(ACP) = V(ACN) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(BAT) BAT quiescent current I(BAT) at V(BAT) = V(VCC) = V(PVCC) = 16.8 V 17 µA I(SRP,SRN) SRP and SRN quiescent current I(SRP,SRN) = ( I(SRP) + I(SRN) ) at V(SRP) = V(SRN) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(SYNN,SYNP) SYNN and SYNP quiescent current I(SYNN,SYNP) = ( I(SYNN) + I(SYNP) ) at V(SYNP) = V(SYNN) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(SYS) SYS quiescent current I(SYS) at V(SYS) = V(VCC) = V(PVCC) = 16.8 V 25 µA I(PH) PH quiescent current I(PH) at V(PH) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(BTST) BTST quiescent current I(BTST) at V(BTST) = V(VCC) = V(PVCC) = 16.8 V 1 µA QUIESCENT CURRENT – ADAPTER CONNECTED AND READY TO CHARGE I(VCC,PVCC) VCC and PVCC quiescent current I(VCC,PVCC) = (I(VCC) + I(PVCC) at V(VCC) = V(PVCC) = 16.8 V 4.45 mA I(ACP,ACN) ACP and ACN quiescent current I(ACP,ACN) = (I(ACP) + I(ACN) ) at V(ACP) = V(ACN) = V(VCC) = V(PVCC) = 16.8 V 815 µA I(BAT) BAT quiescent current I(BAT) at V(BAT) = V(VCC) = V(PVCC) = 16.8 V 500 µA I(SRP,SRN) SRP and SRN quiescent current I(SRP,SRN) = ( I(SRP) + I(SRN) ) at V(SRP) = V(SRN) = V(VCC) = V(PVCC) = 16.8 V 305 µA SYNN, SYNP, and SYS quiescent I(SYNN,SYNP,SYS) = ( I(SYNN) + I(SYNP) + I(SYS) ) at V(SYNP) = V(SYNN) = V(SYS) = V(VCC) = I(SYNN,SYNP,SYS) 321 µA current V(PVCC) = 16.8 V I(PH) PH quiescent current I(PH) at V(PH) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(BTST) BTST quiescent current I(BTST) at V(BTST) = V(VCC) = V(PVCC) = 16.8 V 1 µA I(VCC_SW) = I(VCC) FPWM = 300 kHz, charger on (CHGEN = LO) = ENABLED VCC Current while converter is I(VCC_SW) Q(G) at HIDRV = Q(G) at LODRV = 30 nC, [No Load on VREF5] 25 mA switching including gate drive current Gate drive switching current = Q(G)× FPWM = (30nC + 30nC) × 300kHz = 18mA 5-V REFERENCE LDO VOLTAGE AND AC DETECTION STATUS (VREF5, TURNS ON WHEN AC DETECTED) Adapter detected (VACDET >V(ACD)), VCC> 7 V V(VREF5) 5V Regulator output voltage 4.75 5 5.25 V 0 → 10 mA, source current Saturation voltage when VREF5 is Adapter not detected, (VACDET< V(ACD)) V(VREF5_SAT) 0.3 V off 0 →– 10 mA, ac adapter inserted, C O = 1 µF, discharge Load I(VREF5_LIM) Short-circuit current V(VREF5) = AGND 20 mA UNDERVOLTAGE LOCKOUT CIRCUIT Undervoltage lockout threshold VREF5 rising, POR mode set at VREF5 < V(UVLO) 3.7 V UVLO V(UVLO) hysteresis VREF5 falling 100 mV SBS-Like SMBus LOGIC LEVELS VIL Input low threshold level 2.7 V < V(pull-up) < 5.5 V, SDA and SCL 0.8 V VIH Input high threshold level 2.7 V < V(pull-up) < 5.5 V, SDA and SCL 2.1 V I(bias) Input bias current 2.7 V < V(pull-up) < 5.5 V, SDA and SCL 1 µA ALARM OPEN DRAIN OUTPUT V(ALARM_sat) ALARM output low saturation level I(ALARM) = 5mA 0.5 V Ilkg(ALARM) ALARM leakage current V(ALARM) = 5V 1 µA THERMAL SHUTDOWN, IC OVERTEMPERATURE PROTECTION T(SHUT) Thermal shutdown Threshold TJ rising, Charge disabled at TJ > T(SHUT) 145 °C T(SHUTH) Hysteresis TJ falling, Charge enabled at TJ < T(SHUT)– T(SHUTH) 15 °C Deglitch time, thermal shutdown TJ rising/falling 8 ms 7 Submit Documentation Feedback |
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Similar Description - BQ24721_07 |
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