BD8149MUV Datasheet, PDF (1/21 Pages) Rohm – Gamma voltage generated IC

Power Supply IC Series for TFT-LCD Panels
Gamma voltage generated IC
with built-in DAC
BD8149MUV
No.16035EBT17
●Description
The feature of gamma voltage generated IC BD8149MUV provides a single-chip solution with a high-precision 10-bit DAC
setting controlled by I2C serial communications interface and a Buffer AMP (12ch). EEPROM auto-read function is also
incorporated.
●Features
1) Single-chip design realizes fewer components
2) Built in 10bit DAC
3) Built in DAC output buffer amplifier (12ch)
4) Double Register synchronous switching function (SEL)
5) I²C interface (SDA, SCL)
STANDARD-MODE, FAST-MODE changeable
6) EEPROM auto-read function
7) Thermal Shut Down circuit
8) Under Voltage Lock Out circuit
9) Power ON Reset circuit
10) Input tolerant (SDA, SCL, EN, EN_AR, SEL)
11) VQFN032V5050 package
●Applications
It may be used with TFT-LCD panels, such as big screen and high resolution LCD televisions.
●Absolute Maximum Ratings (Ta=25℃)
PARAMETER
SYMBOL
RATING
UNIT
Power supply voltage1
VDD
4.5
V
Power supply voltage2
VCC
19
V
REFIN voltage
VREFIN
5
V
DAC reference voltage
VDAC
7
V
SEL, A0, A1, A2
Functional pin voltage
EN, SLAVE/AR
4.5
V
EN_AR
2-lines serial pin voltage
SDA, SCL
4.5
V
Junction voltage
Power dissipation
Tjmax
Pd
150
℃
4560*¹
mW
Operating temperature range
Topr
-25～+85
℃
Storage temperature range
Tstg
-55～+150
℃
*1 To use the IC at temperature over 25℃, derate power rating by 19.52mW /℃.
When mounted on a 4-layer glass epoxy board measuring 74.2 x 74.2 x 1.6mm.
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2016.08 - Rev.B