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BQ76925PWR Datasheet(PDF) 6 Page - Texas Instruments |
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BQ76925PWR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 43 page  bq76925 SLUSAM9C – JULY 2011 – REVISED OCTOBER 2015 www.ti.com 7.5 Electrical Characteristics: Supply Current BAT = 4.2 to 26.4 V, VCn = 1.4 to 4.4, TA = –25°C to 85°C Typical values stated where TA = 25°C and BAT= 21.6 V (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT All device functions enabled IDD1 Normal mode supply current All pins unloaded 40 48 µA SDA and SCL high V3P3 and overcurrent monitor enabled All pins unloaded IDD2 Standby mode 1 supply current 14 17 µA All other device functions disabled SDA and SCL high V3P3 enabled All pins unloaded IDD3 Standby mode 2 supply current 12 14 V All device functions disabled SDA and SCL high V3P3 disabled All pins unloaded IDD4 Sleep mode supply current 1.0 1.5 µA All device functions disabled SDA and SCL low All cell voltages equal n = 6 2.4 2.7 Cell balancing disabled IVCn Input current for selected cell µA Open cell detection disabled n = 1 – 5 < 0.5 during cell voltage monitoring All cell voltages equal ∆IVCn Cell to cell input current difference Cell balancing disabled < 0.2 µA Open cell detection disabled 7.6 Internal Power Control (Startup and Shutdown) PARAMETER TEST CONDITION MIN TYP MAX UNIT Initial BAT < 1.4 VBAT rising(1) 4.3 4.5 4.7 V Measured at BAT VPOR Power on reset voltage pin Initial BAT > 1.4 VBAT rising(1) 6.5 7.0 7.5 V VSHUT Shutdown voltage(2) Measured at BAT pin, BAT falling 3.6 V Time delay after POR before tPOR CV3P3 = 4.7 µF 1 ms I2C comms allowed VWAKE Wakeup voltage Measured at ALERT pin 0.8 2 V tWAKE_PLS Wakeup signal pulse width 1 5 μs Time delay after wakeup before tWAKE_DLY CV3P3 = 4.7 µF 1 ms I2C comms allowed (1) Initial power up will start with BAT < 1.4 V, however if BAT falls below VSHUT after rising above VPOR, the power on threshold depends on the minimum level reached by BAT after falling below VSHUT. (2) Following POR, the device will operate down to this voltage. 7.7 3.3-V Voltage Regulator PARAMETER TEST CONDITION MIN TYP MAX UNIT VCTL Regulator control voltage (1)(2) Measured at VCTL, V3P3 regulating 3.3 26.4 V VV3P3 Regulator output Measured at V3P3, IREG = 0 to 4 mA, 3.2 3.3 3.4 V BAT = 4.2 to 26.4 V IREG V3P3 output current 4.0 mA ISC V3P3 short circuit current limit V3P3 = 0.0 V 10.0 17.0 mA VTB Thermistor bias voltage Measured at VTB, ITB = 0 VV3P3 V ITB Thermistor bias current 1.0 mA RTB Thermistor bias internal resistance RDS,ON for internal FET switch, ITB = 1.0 mA 90 130 Ω (1) When a bypass FET is used to supply the regulated 3.3 V load current, VCTL automatically adjusts to keep V3P3 = 3.3 V. Note that VCTL,MIN and the FET VGS will determine the minimum BAT voltage at which the bypass FET will operate. (2) If VCTL is tied to BAT, the load current is supplied through V3P3. 6 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Product Folder Links: bq76925 |
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