Texas Instruments TPS75105DSK-529 Evaluation Board TPS75105DSKEVM-529 TPS75105DSKEVM-529 TPS75105DSKEVM-529 Scheda Tecnica
Codici prodotto
TPS75105DSKEVM-529
V
IN
ENA
D1A
D2A
D1B
D2B
ENB
V
ENA
V
ENB
I
SET
V
BATT
TPS7510x
A3
A2
A1
C3
C2
C1
B1
B3
B2
TPS7510x YFF
9-Ball WCSP
(Top View)
TPS7510x DSK
2,5mm x 2,5mm SON-10
(Top View)
1
2
3
4
5
10
9
8
7
6
ENB
ENA
D1A
D2A
GND
I
SET
V
IN
D1B
D2B
NC
GND
TPS7510x
SBVS080I – SEPTEMBER 2006 – REVISED NOVEMBER 2013
Low Dropout, Two-Bank LED Driver with PWM Brightness Control
1
FEATURES
DESCRIPTION
The TPS7510x linear low dropout (LDO) matching
2
•
Regulated Output Current with 2% LED-to-LED
LED current source is optimized for low power
Matching
keypad
and
navigation
pad
LED
backlighting
•
Drives Up to Four LEDs at 25mA Each in a
applications. The device provides a constant current
Common Cathode Topology
to up to four unmatched LEDs organized in two banks
of two LEDs each in a common-cathode topology.
of two LEDs each in a common-cathode topology.
•
28mV Typical Dropout Voltage Extends Usable
Without an external resistor, the current source
Supply Range in Li-Ion Battery Applications
defaults to factory-programmable, preset current level
•
Brightness Control Using PWM Signals
with ±0.5% accuracy (typical). An optional external
•
Two 2-LED Banks with Independent Enable
resistor can be used to set initial brightness to user-
and PWM Brightness Control per Bank
programmable
values
with
higher
accuracy.
Brightness can be varied from off to full brightness by
•
No Internal Switching Signals—Eliminates EMI
inputting a pulse width modulation (PWM) signal on
•
Default LED Current Eliminates External
each Enable pin. Each bank has independent enable
Components
and brightness control, but current matching is done
–
Default values from 3mA to 10mA (in 1mA
to all four channels concurrently. The input supply
increments) available using innovative
range is ideally suited for single-cell Li-Ion battery
supplies and the TPS7510x can provide up to 25mA
supplies and the TPS7510x can provide up to 25mA
factory EEPROM programming
per LED.
–
Optional external resistor can be used for
high-accuracy, user-programmable current
high-accuracy, user-programmable current
No internal switching signals are used, eliminating
troublesome electromagnetic interference (EMI). The
troublesome electromagnetic interference (EMI). The
•
Over-Current and Over-Temperature
TPS7510x is offered in an ultra-small, 9-ball, 0.4mm
Protection
ball-pitch wafer chip-scale package (WCSP) and a
•
Available in Wafer Chip-Scale Package
2,5mm × 2,5mm, 10-pin SON package, yielding a
or 2,5mm × 2,5mm SON-10
very compact total solution size ideal for mobile
handsets and portable backlighting applications. The
handsets and portable backlighting applications. The
APPLICATIONS
device is fully specified over T
J
= –40°C to +85°C.
•
Keypad and Display Backlighting
•
White and Color LEDs
•
Cellular Handsets
•
PDAs and Smartphones
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.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2013, 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.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.