TI-BUF01900.pdf
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FEATURES
D 10-BIT RESOLUTION
D RAIL-TO-RAIL OUTPUT
D ONBOARD NONVOLATILE MEMORY
D I
OUT
: 100mA
D LOW SUPPLY CURRENT: 900µA
D SUPPLY VOLTAGE: 7V to 18V
D DIGITAL SUPPLY: 2.0V to 5.5V
D INDUSTRY-STANDARD, TWO-WIRE
INTERFACE
D HIGH ESD RATING:
2kV HBM, 500V CDM
APPLICATIONS
D LCD PANEL V
COM
CALIBRATION
D LCD PANEL BRIGHTNESS AND CONTRAST
CONTROL
D POTENTIOMETER REPLACEMENT
D MOTOR DRIVE
D PROGRAMMABLE POWER SUPPLY
D PROGRAMMABLE OFFSET ADJUSTMENT
D ACTUATOR CONTROL
BUF01900, BUF01901 RELATED PRODUCTS
FEATURES PRODUCT
22V High Supply Voltage Gamma Buffers BUF11705
12--Channel Programmable Buffer, 10-Bit, V
COM
BUF12800
20-Channel Programmable Buffer, 10-Bit, V
COM
BUF20800
16-Channel Programmable Buffer with Memory BUF16820
20-Channel Programmable Buffer with Memory BUF20820
DESCRIPTION
The BUF01900 and BUF01901 provide a programmable
voltage output with 10-bit resolution. Programming of the
output occurs through an industry-standard, two-wire
serial interface. Once the correct V
COM
voltage is
established it can easily be stored into the integrated
nonvolatile memory.
An initial output voltage and adjustment range can be set
by an external resistor-divider. With its large output current
capability (up to 100mA), the BUF01900 and BUF01901
are ideally suited as programmable V
COM
calibrators in
LCD panels.
The BUF01901 has the digital-to-analog converter (DAC)
output brought out directly. It has a slightly lower cost than
the BUF01900, and works very well with the integrated
V
COM
in traditional gamma buffers such as the BUFxx702,
BUFxx703, BUFxx704 and BUF11705.
The BUF01900 and BUF01901 are both available in
TSSOP-8 and 3mm x 3mm DFN-10 packages. The
DFN-10 package (only 0.9mm in height) is especially
well-suited for notebook computers. Both devices are
specified from −40°C to +85°C.
Analog
7V to 18V
Digital
2V to 5.5V
BIAS
SDA
Input Control Logic
SCL A0
10−Bit
DAC
4xOTP
ROM
Switch
Control
Vol tage
Regulator
Program Command
BUF01900
250k
Ω
Buffer
V
COM
BUF01900
BUF01901
SBOS337A − OCTOBER 2006 − REVISED OCTOBER 2006
Programmable Voltage Source
with Memory
! !
www.ti.com
Copyright 2006, Texas Instruments Incorporated
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.
PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
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