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BQ24152YFFT Datasheet(PDF) 1 Page - Texas Instruments |
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BQ24152YFFT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 38 page 1 FEATURES APPLICATIONS DESCRIPTION 1 mF C VREF LO 1.0 H m 10nF C BOOT + PACK - PACK + 1mF C AUXPWR SCL SDA CSOUT CSIN PGND SW I2CBUS bq24152 10kW VAUX HOST SCL SDA STAT VREF STAT PMID VBUS C IN VBUS C IN 1 F m 4.7 F m BOOT OTG U1 AUXPWR OTG C O 1 0mF R SNS 0.1 mF 10kW 10kW 10kW bq24152 www.ti.com ...................................................................................................................................................................................................... SLUS847 – JUNE 2008 Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support 2 • Charge Faster than Linear Chargers – Output Voltage for VBUS: 5.05 V • High-Accuracy Voltage and Current Regulation • 1.976 x 1.924mm 20-Pin WCSP Package – Input Current Regulation Accuracy: ±5% (100 mA and 500 mA) • Mobile and Smart Phones – Charge Voltage Regulation Accuracy: • MP3 Players ±0.5% (25°C), ±1% (0°C-125°C) • Handheld Devices – Charge Current Regulation Accuracy: ±5% • High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery The bq24152 is a compact, flexible, high-efficiency, Packs USB-friendly switch-mode charge management • 20-V Absolute Maximum Input Voltage Rating device for single-cell Li-ion and Li-polymer batteries • 6-V Maximum Operating Input Voltage used in a wide range of portable applications. The • Built-In Input Current Sensing and Limiting charge parameters can be programmed through an I2C interface. The bq24152 integrates a synchronous • Integrated Power FETs for Up To 1.25-A PWM controller, power MOSFETs, input current Charge Rate sensing, high-accuracy current and voltage • Programmable Charge Parameters through regulation, and charge termination, into a small I2C™ Interface (up to 3.4 Mbps): WCSP package. – Input Current The bq24152 charges the battery in three phases: – Fast-Charge/Termination Current conditioning, constant current and constant voltage. The input current is automatically limited to the value – Charge Voltage (3.5 V to 4.44 V) set by the host. Charge is terminated based on – Safety Timer user-selectable minimum current level. A safety timer – Termination Enable with reset control provides a safety backup for I2C interface. During normal operation, bq24152 • Synchronous Fixed-Frequency PWM automatically restarts the charge cycle if the battery Controller Operating at 3 MHz with 0% to voltage falls below an internal threshold and 99.5% Duty Cycle automatically enters sleep mode or high impedance • Automatic High Impedance Mode for Low mode when the input supply is removed. The charge Power Consumption status is reported to the host using the I2C interface. • Safety Timer with Reset Control Typical Application Circuit • Reverse Leakage Protection Prevents Battery Drainage • Thermal Regulation and Protection • Input/Output Overvoltage Protection • Status Output for Charging and Faults • USB Friendly Boot-Up Sequence • Automatic Charging • Power up System without Battery • Boost Mode Operation for USB OTG: – Input Voltage Range (from Battery): 2.5 V to 4.5 V 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. 2 I2C is a trademark of Philips Electronics. PRODUCTION DATA information is current as of publication date. Copyright © 2008, 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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