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BQ24070RHLR Datasheet(PDF) 1 Page - Texas Instruments |
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BQ24070RHLR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page www.ti.com FEATURES DESCRIPTION APPLICATIONS POWER FLOW DIAGRAM (1) IN BAT OUT bq24070 PACK+ PACK− System VDC GND AC Adapter + Q1 Q2 UDG −04082 40 mΩ (2) bq24070 SLUS694A – MARCH 2006 – REVISED MARCH 2006 SINGLE-CHIP CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC • Small 3,5 mm × 4,5 mm QFN Package The bq24070 device is a highly integrated Li-ion linear charger and system power-path management • Designed for Single-Cell Li-Ion- or device targeted at space-limited portable Li-Polymer-Based Portable Applications applications. The bq24070 offers DC supply (AC • Integrated Dynamic Power-Path Management adapter) power-path management with autonomous (DPPM) Feature Allowing the AC Adapter to power-source selection, power FETs and current Simultaneously Power the System and sensors, high-accuracy current and voltage Charge the Battery regulation, charge status, and charge termination, in a single monolithic device. • Power Supplement Mode Allows Battery to Supplement the AC Input Current The bq24070 powers the system while independently • Autonomous Power Source Selection (AC charging the battery. This feature reduces the charge Adapter or BAT) and discharge cycles on the battery, allows for proper charge termination and allows the system to • Supports Up to 2-A Total Current run with an absent or defective battery pack. This • Thermal Regulation for Charge Control feature also allows for the system to instantaneously • Charge Status Outputs for LED or System turn on from an external power source in the case of a deeply discharged battery pack. The IC design is Interface Indicates Charge and Fault focused on supplying continuous power to the Conditions system when available from the AC adapter or • Reverse Current, Short-Circuit, and Thermal battery sources. Protection • Power Good Status Outputs • Smart Phones and PDA • MP3 Players • Digital Cameras and Handheld Devices • Internet Appliances (1) See Figure 2 and functional block diagram for more detailed feature information. (2) P-FET back gate body diodes are disconnected to prevent body diode conduction. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2006, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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