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BQ24901PW Datasheet(PDF) 3 Page - Texas Instruments |
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BQ24901PW Datasheet(HTML) 3 Page - Texas Instruments |
3 / 18 page bq24901 SLUS527 – DECEMBER 2002 3 www.ti.com ELECTRICAL CHARACTERISTICS Over recommended operating free-air temperature and supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT ICC(VCC) Input current VCC > VCC(min) 2 mA IIB(BAT) Input bias current on BAT pin VI(BAT) > VO(REG), when not in charge 1 IIB(TS) Input bias current on TS pin VI(TS) = 2.5 V 1 A IIB(SNS) Input bias current on SNS pin VCC = 6 V, VI(SNS) = 6 V when not in charge 1 µA IIB(TADJ) Input bias current on TADJ pin VI(TADJ) = VREF 1 BATTERY VOLTAGE and VCC REGULATION VO(REG) Output voltage 0 °C ≤ TA ≤ 70°C 4.17 4.20 4.23 V VCC Supply voltage 5.8 6.0 6.3 V CURRENT REGULATION V(SNS) Current regulation threshold voltage Voltage at pin SNS relative to BAT, 0 °C ≤ TA ≤ 70°C, V(LOWV)≤V(SNS)≤VO(REG) 184 200 216 mV Input common mode range on SNS pin V(UVT) VCC V PRE-CHARGE AND SHORT-CIRCUIT CURRENT REGULATION Pre-charge voltage threshold Voltage at pin SNS relative to BAT pin, 0 °C ≤ TA ≤ 70°C V(UVT) ≤ VI(BAT) ≤ V(LOWV) 10 20 30 mV ISC Short-circuit current 0 °C ≤ TA ≤ 70°C, 0 ≤ VI(BAT) ≤ V(UVT) 5.4 30.0 mA CHARGE TERMINATION DETECTION V Charge termination current detect Voltage at pin SNS relative to BAT pin, 0 °C ≤ TA ≤ 70°C TADJ pin tied to VREF pin, VI(SNS) = VO(REG)VI(BAT) > V(RCH) 16 20 24 mV V(ITERM) Charge termination current detect threshold Voltage at pin SNS relative to BAT pin, 0 °C ≤ TA ≤ 70°C TADJ pin tied to VSS pin, VI(SNS) = VO(REG)VI(BAT) > V(RCH) 7.5 10.0 12.5 mV V(EN-TERM) Enable termination voltage (VI(SNS) –VI(BAT)) <V(ITERM) ,VBAT increasing above threshold VO(REG) –210 VO(REG) – 160 VO(REG) – 110 V t(TRMDET2) Falling-edge delay for termination detection (VSNS – VBAT) increasing above threshold, VI(BAT) > V(EN–TERM), 100 ns fall time 2 mV overdrive 100 µs t(TRMDET1) Rising-edge delay for termination detection (VSNS – VBAT) increasing above threshold, VI(BAT) > V(EN–TERM), 100 ns fall time 2 mV overdrive 20 ms TEMPERATURE COMPARATOR V(LTF) Cold temperature threshold voltage VTS, VCC ≥ 3.5 V 72.6 73.5 74.1 V(HTF) Hot temperature threshold voltage VTS, VCC ≥ 3.5 V 33.7 34.4 35.1 %V V(TCO) Cutoff temperature threshold voltage VTS, VCC ≥ 3.5 V 28.7 29.3 29.9 %VCC LTF hysteresis Hysteresis for LTF threshold voltage 0.1 0.6 1.1 LOW BATTERY VOLTAGE (LOWV) THRESHOLD COMPARATOR V(LOWV) 3.00 3.05 3.15 V (1) Ensured by design. Not production tested. |
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