Texas Instruments TPS61150A-150 Evaluation Board TPS61150AEVM-150 TPS61150AEVM-150 TPS61150AEVM-150 数据表
产品代码
TPS61150AEVM-150
www.ti.com
FEATURES
TYPICAL APPLICATION
APPLICATIONS
DESCRIPTION
VIN
SW
GND
SEL2
SEL1
ISET1
IFB1
R1
56.5kW
IOUT
IFB2
ISET2
R2
56.5kW
56.5kW
2.5V to 6V Input
L1
10 H
m
C1
1mF
C2
1mF
1mF
TPS61150A
SLVS706 – OCTOBER 2006
DUAL OUTPUT BOOST WLED DRIVER
USING SINGLE INDUCTOR
The two current outputs are ideal for driving WLED
backlight for the sub and main displays in clam shell
backlight for the sub and main displays in clam shell
•
2.5V to 6V Input Voltage Range
phones. The two outputs can also be used for driving
•
0.7A Integrated Switch
display and keypad backlights. When used together,
the two outputs can drive up to 14 WLED for one
the two outputs can drive up to 14 WLED for one
•
Built-in Power Diode
large display.
•
1.2MHz Fixed PWM Frequency
In addition to the small inductor, small capacitor and
•
Individually Programmable Output Current
3mm x 3mm QFN package, the built-in MOSFET and
•
Input-to-Output Isolation
diode eliminate the need for any external power
•
Built-in Soft Start
devices. Overall, the IC provides an extremely
compact solution with high efficiency and plenty of
compact solution with high efficiency and plenty of
•
27V Overvoltage Protection
flexibility.
•
3% at 15mA Matching between Two Current
Strings, Improvement from TPS61150/1
Strings, Improvement from TPS61150/1
•
Up to 83% Efficiency
•
Up to 30kHz PWM Dimming Frequency
•
Availiable in a 10 Pin, 3
×
3 mm QFN Package
•
Up to 14 WLED Driver for Media Form Factor
Display
Display
•
Sub and Main Display Backlight in Clam Shell
Phones
Phones
•
Display and Keypad Backlight in Portable
Equipment
Equipment
The TPS61150A is a high frequency boost converter
with
with
two
regulated
current
outputs
for
driving
WLEDs. Each current output can be individually
programmed through external resistors. There is
dedicated selection pin for each output, so the two
outputs
programmed through external resistors. There is
dedicated selection pin for each output, so the two
outputs
can
be
turned
on
separately
or
simultaneously. The output current can be reduced
by a pulse width modulation (PWM) signal on the
select pins or an analog voltage on the ISET pin. The
boost regulator runs at 1.2MHz fixed switching
frequency to reduce output ripple and avoid audible
noises associated with PFM control.
by a pulse width modulation (PWM) signal on the
select pins or an analog voltage on the ISET pin. The
boost regulator runs at 1.2MHz fixed switching
frequency to reduce output ripple and avoid audible
noises associated with PFM control.
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.
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, 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.