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BQ24721CRHBR Datasheet(PDF) 6 Page - Texas Instruments |
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BQ24721CRHBR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 60 page  www.ti.com ELECTRICAL CHARACTERISTICS bq24721, bq24721C SLUS683C – NOVEMBER 2005 – REVISED DECEMBER 2006 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 BATTERY VOLTAGE REGULATION V(BAT_ICR) VBAT Input voltage range V(BAT) 0 PVCC V TJ = 0°C – 85°C –0.4 0.4 Full valid voltage DAC range, Battery Regulation Voltage Accuracy % SMBus DAC register 0 ×15 TJ = 0°C – 125°C –0.5 0.5 V(VBATREG) BAT voltage regulation range 9 19.2 V PWM AC ADAPTER INPUT CURRENT REGULATION, DPM (Dynamic Power Management), I(REG_DPM)= V(IREG_DPM)/R(SENSE_DPM) ACP-ACN differential voltage range V(IREG_DPM) = V(ACP)- V(ACN) V(IREG_DPM) 1.28 162.56 mV for input current regulation SMBus DAC register 0 ×3F, bits b0–b13 Current regulation LSB programming V(ACP-ACN) / 10mΩ I(REG_step_DPM) 128 mA current step Using a 10m Ω sense resistor, R (SNS) V(ACP) – V(ACN) > 40.96 mV –3% 3% (4096 mA with 10 m Ω) VCC ≥ VCC (min), VCC ≥ VI(BAT) + V(DO-MAX), (1) V(ACP) – V(ACN) > 20.48 mV Current regulation accuracy Over differential threshold range, V(IREG), –5% 5% (2048 mA with 10 m Ω) Does not include error induced by the tolerance of the sense resistor, R(SNS) V(ACP) – V(ACN) > 5.12 mV –25% 25% (512 mA with 10 m Ω) PWM BATTERY CHARGE CURRENT REGULATION, I(REG_CHG)= V(IREG_CHG)/ R(SENSE_CHG) SRP-SRN differential voltage range V(IREG_CHG) = V(SRP)- V(SRN) V(IREG_CHG) 1.28 162.56 mV for input current regulation SMBus DAC register 0 ×14, bits b0–b13 Current regulation LSB programming V(SRP-SRN) / 10 mΩ I(REG_step_CHG) 128 mA current step Using a 10m Ω sense resistor, R (SNS) V(SRP-SRN) > 40.96 mV –3 3 (4096 mA with 10 m Ω) VCC ≥ VCC (min), VCC ≥ VI(BAT) + V(DO-MAX), (1) V(SRP-SRN) >20.48 mV Current regulation accuracy Over differential threshold range, V(IREG), –5 5 % (2048 mA with 10 m Ω) Does not include error induced by the tolerance of the sense resistor, R(SNS) V(SRP-SRN) > 5.12 mV –25 25 (512 mA with 10 m Ω) CURRENT SENSE AMPLIFIERS – IBAT AMPLIFIER and IADAPT AMPLIFIER → MUX TO IOUT SRP, SRN common-mode input 2.5 20 V voltage range V(IOUT_IBAT) IOUT output voltage range with IBAT V(IOUT) = V(SRP, SRN)× A(IBAT) 0 3.5 V selected V(BAT) > 2.5 V or V(BAT) > V(IOUT) + V(DO-MAX)(1) G(IBAT) Voltage gain A(IOUT) = V(IOUT)/ V(SRP, SRN) 20 V/V V(SRP, SRN) = 40 mV and higher –2 2 V(BAT) > 2.5 V or V(BAT) > V(IOUT) + V(DO-MAX)(1) Charge current amplifier accuracy V(SRP, SRN) = 20 mV and higher –3 3 % V(SRP, SRN) = 5 mV and higher –25 25 ACP, ACN Common-mode input 0 24 V voltage range V(IOUT_IADAPT) IOUT output voltage range with V(IOUT) = V(ACP, ACN)× A(IADP) 0 3.5 V IADAPT selected V(SRP) > 2.5 V or V(SRP) > V(IOUT) + 1 V G(IADP) Voltage gain A(IADP) = V(IOUT)/ V(ACP, ACN) 20 V/V V(ACP, ACN) = 40 mV and higher –2 2 Adapter current amplifier accuracy, V(BAT) > 2.5 V or V(BAT) > V(ACP, ACN) = 30 mV and higher –3 3 % bq24721 V(IOUT) + V(DO-MAX)(1) V(ACP, ACN) = 5 mV and higher –25 25 V(ACP, ACN) = 40 mV and higher –2 2 Adapter current amplifier accuracy, V(BAT) > 2.5 V or V(BAT) > V(ACP, ACN) = 30 mV and higher –5 5 % bq24721C V(IOUT) + V(DO-MAX)(1) V(ACP, ACN) = 5 mV and higher –25 25 I(OUT_LIM) IOUT output current limit IOUT shorted to AGND 4.5 mA OPERATING CONDITIONS V(VCC), V(PVCC), input voltage V(INOP) Selector and charger operational. 8 24 V operating range (1) V(DO-max) is defined as the maximum drop-out voltage. V(DO-MAX) = 1 V unless other wise specified. In an actual application, V(DO - MAX) = (R(SNS)× IO) + V(DSON_HIGH_SIDE_FET) + V(DSON_BYPASS_FET). 6 Submit Documentation Feedback |
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