ROHM BD8139AEFV Data Sheet

Power Supply IC Series for TFT-LCD Panels

High-precision Gamma Correction ICs with built-in DAC

BD8132FV, BD8139AEFV No.09035EBT02

●Description These gamma correction voltage generation ICs feature built-in DACs and provide a single-chip solution with setting control via serial communications, a high-precision 10-bit DAC, an output amp (18-channel or 10-channel), and Vcom.

●Features 1) Single-chip design means fewer components 2) Built-in 10 bit DAC (18ch: BD8132FV, 10ch: BD8139AEFV) 3) Built-in DAC output amp 4) Built-in Vcom amp 5) Built-in auto-read function 6) 3-line serial interface (BD8132FV) or 2-wire serial (BD8139AEFV) 7) Thermal shutdown circuit 8) SSOP-B40 package (BD8132FV) / HTSSOP-B40 package (BD8139AEFV)

●Applications These ICs can be used with TFT LCD panels used by large-screen and high-definition LCD TVs.

●Absolute maximum ratings (Ta = 25°C)

Parameter Symbol Limit Unit

Power supply voltage 1 DVcc 7 V Power supply voltage 2 Vcc 20 V REFIN voltage REF 20 V Amp output current capacity Io 50*1 m A Junction temperature Tjmax 150 ℃

BD8132FV 1125*2

Power dissipation Pd m W

BD8139AEFV 1600*3

Operating temperature range Topr -30 to +85 ℃ Storage temperature range Tstg -55 to +150 ℃ *1 Must not exceed Pd. *2 Reduced by 9.0 m W/°C over 25°C, when mounted on a glass epoxy board (70 mm  70 mm  1.6 mm). *3 Reduced by 12.8 m W/°C over 25°C, when mounted on a glass epoxy board (70 mm  70 mm  1.6 mm).

●Recommended Operating Ranges

Limit

Parameter Symbol Unit

Min. Max.

Power supply voltage 1 DVcc 2.3 4.0 V Power supply voltage 2 Vcc 6 18 V REFIN voltage REF 6 18 V Amp output current capacity Io — 40 m A Serial clock frequency (BD8132FV) f CLK — 5 MHZ 2 wire serial frequency (BD8139AEFV) f CLK — 400 k Hz OSC frequency (BD8132FV) fosc 10 200 k Hz OSC frequency (BD8139AEFV) fosc — 400 k Hz

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