TPS65070_09 Datasheet, PDF (1/90 Pages) Texas Instruments – Single Chip Power Solution for Battery Powered Systems

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TPS65070, TPS65072, TPS65073
TPS650731, TPS650732
SLVS950B – JULY 2009 – REVISED DECEMBER 2009
Single Chip Power Solution for Battery Powered Systems
Check for Samples: TPS65070, TPS65072, TPS65073, TPS650731, TPS650732
FEATURES
1
•2 Charger/Power Path Management:
– 2A Output Current on the Power Path
– Linear Charger; 1.5A Maximum Charge
Current
– 100mA/500mA/ 800mA/1300mA Current
Limit From USB Input
– Thermal Regulation, Safety Timers
– Temperature Sense Input
• 3 Step-Down Converters:
– 2.25MHz Fixed Frequency Operation
– Up to 1.5A of Output Current
– Adjustable or Fixed Output Voltage
– V_IN Range From 2.8V to 6.3V
– Power Save Mode at Light Load Current
– Output Voltage Accuracy in PWM Mode
±1.5%
– Typical 19 μA Quiescent per Converter
– 100% Duty Cycle for Lowest Dropout
• LDOs:
– Fixed Output Voltage
– Dynamic Voltage Scaling on LDO2
– 20μA Quiescent Current
– 200mA Maximum Output Current
– V_IN Range From 1.8V to 6.3V
• wLED Boost Converter:
– Internal Dimming Using I2C
– Up to 2 × 10 LEDs
– Up to 25mA per String With Internal Current
Sink
• I²C Interface
• 10 Bit A/D Converter
• Touch Screen Interface
• Undervoltage Lockout and Battery Fault
Comparator
APPLICATIONS
• Portable Navigation Systems
• PDAs, Pocket PCs
• OMAP™ and Low Power DSP Supply
DESCRIPTION
The TPS6507x are single chip Power Management
ICs 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 AC. Three
highly efficient 2.25MHz 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 also integrate two general purpose LDOs
for an output current of 200mA. 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
between 1.8V and 6.3V 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 come in a 48-pin leadless package
(6mm × 6mm QFN) with a 0,4mm pitch.
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.
OMAP, PowerPAD are trademarks of Texas Instruments.
2
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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.
Copyright © 2009, Texas Instruments Incorporated