TWL2213CA Datasheet, PDF (1/31 Pages) Texas Instruments – POWER SUPPLY MANAGEMENT IC AND Li-Ion BATTERY CHARGE CONTROL

D Integrated, Single-Chip Solution for Battery
Charge Control and Power Supply
Management
D Linear Charger for Single-Cell Li-Ion or
Li-Polymer Packs
D Integrated Control Over Precharge,
Constant-Current and Constant-Voltage
Charging Phases
D Programmable Charging Current
D Programmable Charge Termination by
Minimum Current and Time
D Battery Temperature Sensing
D Pack Wake Up and Damaged Cell Detect
Functions
D Safety Charge Timers During Precharge
and Constant-Current Charging
TWL2213CA
POWER SUPPLY MANAGEMENT IC AND
Li-Ion BATTERY CHARGE CONTROL
SLVS280 – MARCH 2001
D Six Programmable Low-Dropout Linear
Voltage Regulators
D System Over- and Under-Voltage Shut
Down
D Power On/Power Off and Reset Control
Logic
D Three Individually Selectable LED Backlight
Drivers
D Vibrator and Ringer Drivers
D Internal 8-Bit Analog-to-Digital Converter
(ADC) with Auxiliary Inputs
D I²C Control Interface
D 48-Terminal Plastic TQFP(PFB)
description
The TWL2213 is a single-chip battery and power management solution for wireless handsets, pagers, personal
data assistants (PDAs), and other battery-powered devices. For battery charging, the device incorporates a
linear charger for single-cell Li-Ion and lithium polymer battery packs. Prior to charging, the TWL2213 initiates
battery pack wake up and damaged cell detect functions. For deeply discharged batteries, the device performs
precharge conditioning by trickle-charge to user-defined current settings. Once acceptable pack voltage is
detected, TWL2213 applies a constant-current fast charge at a current level that is determined by a combination
of an external sense resistor and user-programmable sense voltage. When the battery reaches the selected
charge regulation voltage, TWL2213 maintains regulation until charging is terminated by a minimum current or
a timer. During the entire charge cycle, TWL2213 monitors temperature by external thermistor and suspends
charging if temperature exceeds a programmed range. Three programmable safety timers limit the precharge,
constant-current, and total charge times.
For power management, the TWL2213 includes six low-dropout linear voltage regulators. One regulator is
driven from the device’s power on/off logic and incorporates a microcontroller reset function. Five low noise
regulators include individually programmable output voltage and enable-disable. The TWL2213 can be
powered from a battery or AC adapter. When an adapter is present, it supplies power to the device, allowing
the system to function without battery.
TWL2213 also includes individually selectable drivers for three separate backlight LEDs, a ringer, and a vibrator
motor. An internal 8-bit analog-to-digital converter (ADC) is accessible from external pins. The system
microcontroller accesses all TWL2213 programming and status via the I²C serial interface.
The TWL2213 device is packaged in the Texas Instruments 48-terminal plastic thin quad flatpack (TQFP)
package (PFB).
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2001, Texas Instruments Incorporated
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