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2009.07 - Rev.B
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Power Suppl y IC Series for TFT-LCD Panels
High-precision
Gamma Correction ICs with built-in DAC
BD8132FV, BD8139AEFV
●Description
These gamma correction voltage generation ICs feature built-in DA Cs and provide a single-chip solution with setting control
via serial communications, a high-precision 10-bit DAC, an output amp (18-channel or 1 0-cha nnel), 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 (BD813 2FV) 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 hig h-definition LCD TVs.
●Absolute maximum rating s (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 mA
Junction temperature Tjmax 150 ℃
Power dissipation
BD8132FV
Pd
1125*2
mW
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 mW/°C over 25°C, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
*3 Reduced by 12.8 mW/°C over 25°C, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
●Recommended Op erating Ranges
Parameter Symbol
Limit
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 mA
Serial clock frequency (BD8132F V) fCLK — 5 MHZ
2 wire serial frequency (BD8139AEFV) fCLK — 400 kHz
OSC frequency (BD8132FV) fosc 10 200 kHz
OSC frequency (BD8139AEFV) fosc — 400 kHz
No.09035EBT02
BD8132FV, BD8139AEFV
Technical Note
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ohm.com
2009.07 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
●Electrical Characteristic s
BD8132FV(Unless otherwise specified, Vcc = 15 V, DVcc = 3.3 V, Ta = 25℃)
Parameter Symbol
Limit
Unit Condition
Min. Typ. Max.
[REFIN]
Sinking current Iref 25 50 75 µA REF = 10 V
[Gamma correction amp block]
Output current capacity Io 150 300 — mA DAC = 3V, OUTx = 0 V
Load stability ∆V — 5 20 mV Io = +10 mA to -10 mA, OUTx = 6 V
Slew rate SR — 3.5 — V/µS Ro = 100 k, Co = 100 pF *
OUT max. output voltage VOH VCC-0.16 VCC-0.1 — V Io = -5 mA
OUT min. output voltage VOL — 0.15 0.24 V Io = 5 mA
[Common amp block]
Input bias current Ib — 0 1 µA VFB = 6 V
Output current capacity Io 150 300 — mA DAC = 3V, OUTx = 0 V
Load stability ∆V — 5 20 mV Io = +10 mA to -10 mA, OUTx = 3 V
Slew rate SR — 3.5 — V/µS Ro = 100 k, Co = 100 pF *
Input voltage range VFB 0 — VDAC V Ro = 100 k, Co = 100 pF *
OUT max. output voltage VOH VCC-0.16 VCC-0.1 — V Io = -5 mA
OUT min. output voltage VOL — 0.15 0.24 V Io = 5 mA
[DAC]
Resolution Res — 10 — Bit
Nonlinearity error LE -2 — 2 LSB Ideal line error: 00A to 3F5
Differential linearity error DLE -2 — 2 LSB 1 LSB ideal incr ease error: 00A to 3F5
[OSC]
Oscillating frequency fosc — 80 — kHz Internal frequency mode
[Control signals]
Sinking current Ictl — 16 25 µA
Threshold voltage VTH 0.7 — 2.6 V DVCC = 3.3 V
Reset time trst — 45 — µs CCT = 1000 pF
[Overall]
Total supply current Icc — 20 — mA When all output voltages are set to 5 V.