Maker : Texas Instruments
Part No. : BQ24600

Datasheet PDF : BQ24600.pdf
Cross Reference : BQ24600 Cross Reference
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Shortcut : BQ24600 

Product Information

www.DataSheet4U.com bq24600 www.ti.com SLUS891 – FEBRUARY 2010 Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with Low Iq Check for Samples: bq24600 1 FEATURES 1.2 MHz NMOS-NMOS Synchronous Buck Converter Stand-alone Charger Support for Li-Ion or Li-Polymer 5V-28V VCC Input Voltage Range and Support 1-6 Battery Cells Up to 10A Charge Current and Adapter Current High-Accuracy Voltage and Current Regulation – ±0.5% Charge Voltage Accuracy – ±3% Charge Current Accuracy Integration – Internal Loop Compensation – Internal Soft Start Safety – Input Over-Voltage Protection – Battery Thermistor Sense Hot/Cold Charge Suspend – Battery Detection – Built-in Safety Timer – Charge Over-Current Protection – Battery Short Protection – Battery Over-Voltage Protection – Thermal Shutdown Status Outputs – Adapter Present – Charger Operation Status Charge Enable Pin 6V Gate Drive for Synchoronous Power Converter 30ns Driver Dead-time and 99.5% Max Effective Duty Cycle 16-pin 3.5×3.5 mm2 QFN package Energy Star Low Quiescent Current Iq – < 15 mA Off-State Battery Discharge current – < 1.5 mA Off-State Input Quiescent Current APPLICATIONS • • • • • Netbook, Mobile Internet Device, and Ultra-Mobile PC Personal Digital Assistants Handheld Terminals Industrial and Medical Equipment Portable Equipment • • • • • DESCRIPTION The bq24600 is highly integrated Li-ion or Li-polymer switch-mode battery charge controller. It offers a constant-frequency synchronous PWM controller with high accuracy charge current and voltage regulation, charge preconditioning, termination, and charge status monitoring, The bq24600 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The bq24600 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage. • • PACKAGE AND PIN-OUT • • • • • • OAQ (bq24600) QFN-16 TOP VIEW 1 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. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. PG Copyright © 2010, Texas Instruments Incorporated bq24600 www.DataSheet4U.com SLUS891 – FEBRUARY 2010 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. TYPICAL APPLICATION ADAPTER + R11 2 kW D2 MBRS540T3 C8 10 µF C9 10 µF Q4 SiR426 L1 D1 BAT54 C5 1 µF C6 0.1 µF 3.3 µH* RSR 0.010 ADAPTER C2 2.2 µF R6 10 W VREF C7 1 µF R7 100 kW PH ISET BTST REGN R8 22.1 kW C4 1 µF R13 10 kW D3 VREF CE STAT ADAPTER + R14 10 kW GND D4 PG VREF Pack Thermistor Sense R9 9.31 kW R5 100 W SRP SRN TS R10 430 kW 0.1 F VFB PwrPad VIN = 28 V, BAT = 5-cell Li-Ion, Icharge = 3 A, Ipre-charge = Iterm = 0.3 A Figure 1. Typical System Schematic ORDERING INFORMATION PART NUMBER bq24600 IC MARKING OAQ PACKAGE 16-PIN 3.5x3.5 mm QFN ODERING NUMBER (Tape and Reel) bq24600RVAR bq24600RVAT QUANTITY 3000 250 PACKAGE THERMAL DATA PACKAGE QFN – RVA (1) (2) (1) (2) qJP 4 °C/W qJA 43...

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