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BQ25302 Datasheet(PDF) 9 Page - Texas Instruments |
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BQ25302 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 38 page  7.5 Electrical Characteristics (continued) VVBUS_UVLOZ < VVBUS < VVBUS_OVP and VVBUS > VBAT + VSLEEP, TJ = -40°C to +125°C, and TJ = 25°C for typical values (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VBAT_OVP_FALL Battery overvoltage falling threshold VBAT falling, as percentage of VBATREG 100.0 101.6 103.1 % CONVERTER PROTECTION VBTST_REFRESH Bootstrap refresh comparator threshold (VBTST - VSW) when LSFET refresh pulse is requested, VBUS = 5V 2.7 3 3.3 V IHSFET_OCP HSFET cycle by cycle over current limit threshold 5.2 6.2 6.7 A STAT INDICATION ISTAT_SINK STAT pin sink current 6 mA FBLINK STAT pin blink frequency 1 Hz FBLINK_DUTY STAT pin blink duty cycle 50 % THERMAL REGULATION AND THERMAL SHUTDOWN TREG Junction temperature regulation accuracy 111 120 133 °C TSHUT Thermal shutdown rising threshold Temperature increasing 150 °C Thermal shutdown falling threshold Temperature decreasing 125 °C BUCK MODE OPERATION FSW PWM switching frequency SW node frequency 1.02 1.20 1.38 MHz DMAX Maximum PWM Duty Cycle 97.0 % REGN LDO VREGN_UVLO REGN UVLO VVBUS rising 3.85 V VREGN REGN LDO output voltage VVBUS = 5V, IREGN = 0 to 16mA 4.2 5.0 V ICHG SETTING VICHG ICHG pin regulated voltage 993 998 1003 mV RICHG_SHORT_FALL Maximum resistance to disable charge VBUS=5V 1.00 kΩ RICHG_OPEN_RISE Minimum resistance to disable charge VBUS=5V, 565 kΩ RICHG_MAX Maximum programmable resistance at ICHG VBUS=5V 250.00 kΩ RICHG_MIN_SLE0 Minimum programmable resistance at ICHG VBUS=5V 17.40 kΩ RICHG_HIGH ICHG setting resistor threshold to clamp precharge and termination current to 63mA RICHG > RICHG_HIGH 60.0 65.0 70.0 kΩ KICHG Charge current ratio ICHG set at 1.72A with RICHG = 23.2kΩ, V BAT=3.8V, VBUS=5V, ICHG = KICHG / RICHG 36000 40000 44000 AxΩ KICHG Charge current ratio ICHG set at 1.0A with RICHG = 40.2kΩ, V BAT = 3.8V, VBUS = 5V, ICHG = KICHG / RICHG 36000 40280 44000 AxΩ KICHG Charge current ratio ICHG set at 0.5A with RICHG = 78.7kΩ, V BAT = 3.8V, VBUS = 5V, ICHG = KICHG / RICHG 32000 40700 48000 AxΩ COLD/HOT THERMISTOR COMPARATOR VT1% TCOLD (0°C) threshold, charge suspended if thermistor temperature is below T1 VTS rising, as percentage to VREGN 72.68 73.5 74.35 % VT1% VTS falling As Percentage to VREGN 70.68 71.5 72.33 % VT3% THOT (45°C) threshold, charge suspended if thermistor temperature is above T_HOT VTS falling, as percentage to VREGN 46.35 47.25 48.15 % www.ti.com BQ25302 SLUSCZ3 – OCTOBER 2020 Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 9 Product Folder Links: BQ25302 |
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