The TPS6507x family of devices are single-chip power management ICs (PMICs) for portable applications consisting of a battery charger with power path management for a single Li-Ion or Li-Polymer cell. The charger can either be supplied by a USB port on pin _USB_ or by a DC voltage from a wall adapter connected to pin . Three highly efficient 2.25-MHz step-down converters are targeted at providing the core voltage, memory, and I/O voltage in a processor-based system. The step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents.
●For low noise applications the devices can be forced into fixed-frequency PWM using the I2C interface. The step-down converters allow the use of small inductors and capacitors to achieve a small solution size. The TPS6507x devices also integrate two general purpose LDOs for an output current of 200 mA. These LDOs can be used to power an SD-card interface and an _always-on_ rail, but can be used for other purposes as well. Each LDO operates with an input voltage range from 1.8 V to 6.3 V allowing them to be supplied from one of the step-down converters or directly from the main battery. An inductive boost converter with two programmable current sinks power two strings of white LEDs.
●The TPS6507x devices come in a 48-pin leadless package (6-mm × 6-mm VQFN) with a 0.4-mm pitch.
● Charger/Power Path Management:
● 2-A Output Current on the Power Path
● Linear Charger; 1.5-A Maximum Charge
●Current
● 100-mA/500-mA/800-mA/1300-mA Current
●Limit From USB Input
● Thermal Regulation, Safety Timers
● Temperature Sense Input
● 3 Step-Down Converters:
● 2.25-MHz Fixed-Frequency Operation
● Up to 1.5 A of Output Current
● Adjustable or Fixed Output Voltage
● VIN Range From 2.8 V to 6.3 V
● Power Save Mode at Light Load Current
● Output Voltage Accuracy in PWM Mode ±1.5%
● Typical 19-µA Quiescent Current per
●Converter
● 100% Duty Cycle for Lowest Dropout
● LDOs:
● Fixed Output Voltage
● Dynamic Voltage Scaling on LDO2
● 20-µA Quiescent Current
● 200-mA Maximum Output Current
● VIN Range From 1.8 V to 6.3 V
● wLED Boost Converter:
● Internal Dimming Using I2C
● Up to 2 × 10 LEDs
● Up to 25 mA per String With Internal Current
●Sink
● I2C Interface
● 10 Bit A/D Converter
● Touch Screen Interface
● Undervoltage Lockout and Battery Fault
●Comparator
