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BQ24093DGQT Datasheet(PDF) 7 Page - Texas Instruments |
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BQ24093DGQT Datasheet(HTML) 7 Page - Texas Instruments |
7 / 32 page 1 2 3 4 5 10 9 8 7 6 IN ISET VSS PRETERM PG NC ISET2 CHG TS OUT bq2409x bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968B – JANUARY 2010 – REVISED JUNE 2010 PIN CONFIGURATION PIN FUNCTIONS NAME PIN I/O DESCRIPTION Input power, connected to external DC supply (AC adapter or USB port). Expected range of bypass IN 1 I capacitors 1mF to 10mF, connect from IN to VSS. Battery Connection. System Load may be connected. Average load should not be excessive, allowing OUT 10 O battery to charge within the 10 hour safety timer window. Expected range of bypass capacitors 1mF to 10mF. Programs the Current Termination Threshold (5 to 50% of Iout which is set by ISET) and Sets the PRE-TERM 4 I Pre-Charge Current to twice the Termination Current Level. Expected range of programming resistor is 1k to 10k Ω (2k: Ipgm/10 for term; Ipgm/5 for precharge) Programs the Fast-charge current setting. External resistor from ISET to VSS defines fast charge current ISET 2 I value. Range is 10.8k (50mA) to 675 Ω (800mA). Programming the Input/Output Current Limit for the USB or Adaptor source: ISET2 7 I High = 500mAmax, Low = ISET, FLOAT = 100mAmax. Temperature sense pin connected to bq24090/2 -10k at 25°C NTC thermistor & bq24091/3 -100k at 25°C NTC thermistor, in the battery pack. Floating TS Pin or pulling High puts part in TTDM “Charger” TS 9 I Mode and disable TS monitoring, Timers and Termination. Pulling pin Low disables the IC. If NTC sensing is not needed, connect this pin to VSS through an external 10 k Ω/100kΩ resistor. A 250kΩ from TS to ground will prevent IC entering TTDM mode when battery with thermistor is removed. VSS 3 – Ground terminal CHG 8 O Low (FET on) indicates charging and Open Drain (FET off) indicates no Charging or Charge complete. PG 5 O Low (FET on) indicates the input voltage is above UVLO and the OUT (battery) voltage. NC 6 NA Do not make a connection to this pin (for internal use) – Do not route through this pin There is an internal electrical connection between the exposed thermal pad and the VSS pin of the Thermal PAD Pad device. The thermal pad must be connected to the same potential as the VSS pin on the printed circuit – and Package 5x3mm2 board. Do not use the thermal pad as the primary ground input for the device. VSS pin must be connected to ground at all times Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): bq24090 bq24091 bq24092 bq24093 |
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