Buffer Amp. BD8150KVT Datasheet

BD8150KVT Amp. Datasheet pdf. Equivalent

Part BD8150KVT
Description 4-channel System Power Supply + Gamma Buffer Amp
Feature Power Supply IC Series for TFT-LCD Panels 4-channel System Power Supply + Gamma Buffer Amp IC BD8150.
Manufacture Rohm
Datasheet
Download BD8150KVT Datasheet



BD8150KVT
Power Supply IC Series for TFT-LCD Panels
4-channel System Power Supply
+ Gamma Buffer Amp IC
BD8150KVT
No.09035EBT03
Description
The BD8150KVT is a system power supply IC that offers a 4-channel power supply with 10 gamma correction output channels
and VCOM. The DC/DC block can be switched between step-up and step-down and supports both 5V and 12V input.
Features
1) Multi-channel power supply with two DC/DC converter controller channels and two charge pump channels
2) 10channel gamma correction Buffer Amp output and 1channel VCOM
3) High reference voltage accuracy: ±1 %
4) Oscillating frequency: 1MHz
5) Built-in UVLO (Under Voltage Lockout) and output short-circuit protection circuits
6) Standby current of 0μA (Typ.)
7) Controllable start up sequence
8) TQFP64V package
Applications
Power supply for LCD monitors and LCD TVs
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Rating
Power supply voltage VCC 15
Regulator power supply voltage
REGVCC
15
Driver power supply voltage
PVCC
15
Junction temperature
Power dissipation
Tjmax
Pd
125
1000*1
Operating temperature range
Topr
30 to 85
Storage temperature range
Tstg
55 to 150
*1 Derated at 10mW/°C at Ta>25°C when mounted on a 70.0 mm 70.0 mm 1.6 mm glass epoxy board
Unit
V
V
V
°C
mW
°C
°C
Operating Conditions (Ta=-30°C ~+85°C)
Parameter
Symbol
Power supply voltage
Regulator power supply voltage
Driver power supply voltage
VCC
REGVCC
PVCC
Limits
Min. Max.
2.7 13
4.5 14
2.7 13
Unit
V
V
V
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/18
2009.07 - Rev.B



BD8150KVT
BD8150KVT
Technical Note
Electrical Characteristics (Unless otherwise specified, VCC = 5 V, REGVCC = 12V, Ta = 25°C)
Parameter
Symbol
Min.
Limit
Typ.
Max. Unit
Conditions
[ (1) DC/DC converter controller ERR AMP1, 2 ]
Input bias current
Ib12 3 0.1 3 μA INV = 0.5 V
Input offset voltage
Vos12
10
0
10 mV
Output source current
Iesc12
2
0.7 0.2 mA VFB = 1.25 V, INV = 0.5 V, NON = 2.5 V
Output sink current
Iesk12
0.1
0.3
1 mA VFB = 1.25 V, INV = 1.5 V, NON = 0 V
Input voltage range
VNON12
0.1
VCC1 V
Max. output voltage
Voh12
1.8
2.1
2.4 V IFB = 0.1 mA
Min. output voltage
Vol12
0.6
0.8
1.0 V IFB = 0.1 mA
Feedback voltage
FB1 1.225 1.25 1.275 V ERRAMP1 only
[ (1) PWM and DRV ]
Output sink current
Ipsk12
70
130 200 mA GD1, 2 = 5 V
Output source current
Ipsc12
245
160
85 mA GD1, 2 = 0 V
[ (1) UD Selector ]
High-side threshold voltage Vudh VCC 0.7 VCC V Step-down operation
Low-side threshold voltage Vudl
0 VCC 0.3 V Step-up operation
[ (1) Detector 1, 2 ]
High-side threshold voltage 1 Vdeh12
0.9
1.0
1.1 V DET1, 2 L H sweep up VINV
Low-side threshold voltage 1 Vdel12
0.6
0.7
0.8 V DET1, 2 H L sweep down VINV
High-side threshold voltage 2 Vdeh22
0.1
0.2
0.3 V DET2 LH,Inverting sweep down VNON
Low-side threshold voltage 2 Vdel22
0.4
0.5
0.6 V DET2 HL,Inverting sweep up VNON
DET1 max. output voltage
Vdh1
4.8
5.0
V
DET1 min. output voltage
Vdl1
0 0.2 V
DET2 max. output voltage
Vdh2
4.8
5.0
V
DET2 min. output voltage
Vdl2
0 0.2 V
[ (1) Oscillator ]
Switching frequency
Fsw12
0.8
1.0
1.2 MHz
Frequency variation
Fc12
10
% VCC = 3 V to 13 V
[ (1) Soft start ]
Source current
Iscss
6
10 14 μA
Sink current
Iskss
0.5
1
2 mA CTL1, 2 = 0 V
[ (1) Timer latch ]
Source current
Isctl 6 10 14 μA SCP = 1.0 V
SCP threshold voltage
Vthscp
1.25
V
[ (1) DTC1 ]
Input bias current
Vdtc1 3 0.1
3 μA
High-side threshold voltage
VdtcH1
1.5
V On Duty = 0%
Low-side threshold voltage
VdtcL1
1.0
V On Duty = 100%
[ (1) DTC2 ]
Input bias current
Idtc2
3 0.1
3 μA
High-side threshold voltage
IdtcH2
1.5
V On Duty = 100%
Low-side threshold voltage
IdtcL2
1.0
V On Duty = 0%
[ (2) Charge pump driver ERR AMP3, 4 ]
Feedback voltage
FB3 1.212 1.25 1.288 V
FB4 0 V
Input bias current
Ib34 3 0.1 3 μA Buffer
I/O voltage difference
Vd34
0.2 0.5 V Io = 10 mA
Output current capacity
Io34
130
50 mA VFB = 0 V
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
2/18
2009.07 - Rev.B





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