BQ24012

Features:

Small 3 mm × 3 mm MLP (QFN) Package
Ideal for Low-Dropout Designs for Single-Cell Li−Ion or Li−Pol Packs in Space Limited Applications
Integrated Power FET and Current Sensor for Up to 1-A Charge Applications
Reverse Leakage Protection Prevents Battery Drainage
Integrated Current and Voltage Regulation
± 0.5% Voltage Regulation Accuracy
Charge Termination by Minimum Current and Time
Precharge Conditioning With Safety Timer
Status Outputs for LED or System Interface Indicates Charge and Fault Conditions
Battery Insertion and Removal Detection
Works With Regulated and Unregulated Supplies
Short-Circuit Protection




Application

Cellular Phones
PDAs, MP3 Players
Digital Cameras
Internet Appliances




Specifications

			UNIT
Supply voltage range, (VCC all with respect to VSS)		-0.3 to 18	v
Input voltage range(2)	IN, STAT1, STAT2, TS, PG, CE, TTE	−0.3 to VCC
	BAT, OUT, ISET	−0.3 to 7	VDC
Voltage difference between VCC and IN inputs VCC - VIN		± 0.5	V
Output sink/source current	STAT1, STAT2, PG	15	mA
Output current	IN, OUT	1.5	A
Operating free.air temperature range, TA		−40 to 125	°C
Junction temperature range, TJ
Storage temperature, Tstg		−65 to 150
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds		300

Description

The BQ24012 has four features.(1)cellular phones.(2)PDAs, MP3 players.(3)digital cameras.(4)internet appliances.

The bqTINY series are highly integrated Li-Ion and Li-Pol linear charge management devices targeted at space limited portable applications. The bqTINY series offer integrated powerFET and current sensor,reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination, in a small package.The bqTINY charges the battery in three phases:conditioning, constant current, and constant voltage.Charge is terminated based on minimum current. An internal charge timer provides a backup safety feature for charge termination. The bqTINY
automatically re-starts the charge if the battery voltage falls below an internal threshold. The bqTINY automatically enters sleep mode when VCC supply is removed.In addition to the standard features, different versions of the bqTINY offer a multitude of additional features.These include temperature sensing input for detecting hot or cold battery packs; power good (PG) output indicating the presence of valid input power; a TTL-level charge-enable input (CE) used to disable or enable the charge process; and a TTL-level timer and termination enable (TTE) input used to disable or enable the fast-charge timer and charge termination.

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.BQ24012 have limited built-in ESD protection. The leads of BQ24012 should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

The bqTINY^TM series are highly integrated Li-Ion and Li-Pol linear charge management devices targeted at space limited portable applications. The bqTINY^TM series offer integrated powerFET and current sensor,reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination, in a small package.

The bqTINY^TM charges the battery in three phases:conditioning, constant current, and constant voltage.Charge is terminated based on minimum current. An internal charge timer provides a backup safety feature for charge termination. The bqTINY^TM automatically re-starts the charge if the battery voltage falls below an internal threshold. The bqTINY^TM automatically enters sleep mode when V_CC supply is removed.