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SLVSAP7 – JANUARY 2011
Single Chip Power Solution for Battery Powered Systems
1
FEATURES
10 Bit A/D Converter
2
Qualified for Automotive Applications
Touch Screen Interface
Charger/Power Path Management:
Undervoltage Lockout and Battery Fault
Comparator
–
2A Output Current on the Power Path
–
Linear Charger; 1.5A Maximum Charge
APPLICATIONS
Current
Portable Navigation Systems
–
100mA/500mA/ 800mA/1300mA Current
Low-Power DSP Supply
Limit From USB Input
–
Thermal Regulation, Safety Timers
DESCRIPTION
–
Temperature Sense Input
The TPS6507x are single chip Power Management
3 Step-Down Converters:
ICs for portable applications consisting of a battery
–
2.35MHz Fixed Frequency Operation
charger with power path management for a single
Li-Ion or Li-Polymer cell. The charger can either be
–
Up to 1.5A of Output Current
supplied by a USB port on pin USB or by a dc voltage
–
Adjustable or Fixed Output Voltage
from a wall adapter connected to pin AC. Three
–
VIN Range From 2.8V to 6.3V
highly efficient 2.25MHz step-down converters are
targeted at providing the core voltage, memory and
–
Power Save Mode at Light Load Current
I/O voltage in a processor based system. The
–
Output Voltage Accuracy in PWM Mode
step-down converters enter a low power mode at light
±1.5%
load for maximum efficiency across the widest
–
Typical 19 mA Quiescent Current per
possible range of load currents. For low noise
Converter
applications the devices can be forced into fixed
frequency
PWM
using
the
I2C
interface.
The
–
100% Duty Cycle for Lowest Dropout
step-down converters allow the use of small inductors
LDOs:
and capacitors to achieve a small solution size. The
–
Fixed Output Voltage
TPS6507x also integrate two general purpose LDOs
for an output current of 200mA. These LDOs can be
–
Dynamic Voltage Scaling on LDO2
used
to
power
an
SD-card
interface
and
an
–
20mA Quiescent Current
always-on rail, but can be used for other purposes as
–
200mA Maximum Output Current
well. Each LDO operates with an input voltage range
between 1.8V and 6.3V allowing them to be supplied
–
VIN Range From 1.8V to 6.3V
from one of the step-down converters or directly from
wLED Boost Converter:
the main battery. An inductive boost converter with
–
Internal Dimming Using I2C
two programmable current sinks power two strings of
white LEDs.
–
Up to 2 × 10 LEDs
–
Up to 25mA per String With Internal Current
The TPS6507x come in a 48-pin leadless package
Sink
(6mm × 6mm QFN) with a 0.4mm pitch.
I2C Interface
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.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.