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BQ24075RGTRG4 Datasheet(PDF) 6 Page - Texas Instruments |
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BQ24075RGTRG4 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 38 page 1 2 3 4 12 11 10 9 ILIM OUT OUT CHG TS BAT BAT CE 16 15 14 13 5 6 7 8 bq24075 1 2 3 4 12 11 10 9 ILIM OUT OUT CHG TS BAT BAT CE 16 15 14 13 5 6 7 8 bq24074 1 2 3 4 12 11 10 9 ILIM OUT OUT CHG TS BAT BAT CE 16 15 14 13 5 6 7 8 bq24072 bq24073 bq24072, bq24073 bq24074, bq24075 SLUS810A – SEPTEMBER 2008 – REVISED DECEMBER 2008...................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LOGIC LEVELS ON EN1, EN2, CE, SYSOFF, TD VIL Logic LOW input voltage 0 0.4 V VIH Logic HIGH input voltage 1.4 6 V IIL Input sink current VIL= 0V 1 µA IIH Input source current VIH= 1.4V 10 µA LOGIC LEVELS ON PGOOD, CHG VOL Output LOW voltage ISINK = 5 mA 0.4 V RGT PACKAGE (Top View) TERMINAL FUNCTIONS TERMINAL NO. I/O DESCRIPTION NAME '72, '73 '74 '75 External NTC Thermistor Input. Connect the TS input to the NTC thermistor in the battery pack. TS monitors TS 1 1 1 I a 10k Ω NTC thermistor. For applications that do not utilize the TS function, connect a 10kΩ fixed resistor from TS to VSS to maintain a valid voltage level on TS. Charger Power Stage Output and Battery Voltage Sense Input. Connect BAT to the positive terminal of the BAT 2, 3 2, 3 2, 3 I/O battery. Bypass BAT to VSS with a 4.7 µF to 47 µF ceramic capacitor. Charge Enable Active-Low Input. Connect CE to a high logic level to place the battery charger in standby mode. In standby mode, OUT is active and battery supplement mode is still available. Connect CE to a low CE 4 4 4 I logic level to enable the battery charger. CE is internally pulled down with ~285 k Ω. Do not leave CE unconnected to ensure proper operation. EN2 5 5 5 I Input Current Limit Configuration Inputs. Use EN1 and EN2 control the maximum input current and enable USB compliance. See Table 2 for the description of the operation states. EN1 and EN2 are internally pulled EN1 6 6 6 I down with ≈285 kΩ. Do not leave EN1 or EN2 unconnected to ensure proper operation. Open-drain Power Good Status Indication Output. PGOOD pulls to VSS when a valid input source is PGOOD 7 7 7 O detected. PGOOD is high-impedance when the input power is not within specified limits. Connect PGOOD to the desired logic voltage rail using a 1k Ω-100kΩ resistor, or use with an LED for visual indication. VSS 8 8 8 – Ground. Connect to the thermal pad and to the ground rail of the circuit. Open-Drain Charging Status Indication Output. CHG pulls to VSS when the battery is charging. CHG is high CHG 9 9 9 O impedance when charging is complete and when charger is disabled. Connect CHG to the desired logic voltage rail using a 1k Ω-100kΩ resistor, or use with an LED for visual indication. System Supply Output. OUT provides a regulated output when the input is below the OVP threshold and above the regulation voltage. When the input is out of the operation range, OUT is connected to VBAT except OUT 10, 11 10, 11 10, 11 O when SYSOFF is high (bq24075 only). Connect OUT to the system load. Bypass OUT to VSS with a 4.7 µF to 47 µF ceramic capacitor. Adjustable Current Limit Programming Input. Connect a 1100 Ω to 8 kΩ resistor from ILIM to VSS to program ILIM 12 12 12 I the maximum input current (EN2=1, EN1=0). The input current includes the system load and the battery charge current. Leaving ILIM unconnected disables all charging. Input Power Connection. Connect IN to the external DC supply (AC adapter or USB port). The input operating range is 4.35V to 6.6V (bq24072, bq24073, and bq24075) or 4.35V to 10.5V (bq23074). The input can accept IN 13 13 13 I voltages up to 26V without damage but operation is suspended. Connect bypass capacitor 1 µF to 10 µF to VSS. 6 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): bq24072 bq24073 bq24074 bq24075 |
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