TWL2203

Features:

· Li-Ion Battery Charging Control
· Over-Voltage Shutdown
· Seven Low-Dropout Low-Noise Linear Voltage Regulators (LDO)
· Voltage Detectors (With Power-Off Delay)
· Four-Channel Analog Multiplexer
· Three General-Purpose Operational Amplifiers
· Ringer Driver
· Power Supply Switch for Accessories
· Low Quiescent Current
· 48-pin TQFP


Pinout




Specifications

Supply-voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6.5 V
External-voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 15 V
Output-voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6.5 V
Input-voltage range, all other pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6.5 V
Continuous total-power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See Dissipation-Rating Table
Free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30°C to 85°C
Storage-temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65°C to 150°C


Description

The TWL2203 incorporates a complete power-management system for a cellular telephone that uses lithium-ion cells. The device includes circuitry to control the gate voltage of two P-channel MOSFETs. The MOSFETs perform constant-voltage/constant-current charging (CVCC). The TWL2203 has seven low-drop
linear voltage regulators (LDO) to regulate the battery power supply to the different sections of the phone, a battery voltage monitor, a ringer driver, an analog multiplexer, and three general-purpose operational amplifiers for signal conditioning.

The TWL2203 is packaged in TI's 48-pin thin-quad flat package (PFB).