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
Power supply voltage
Regulator power supply voltage
Driver power supply voltage
Junction temperature
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
CC
REGV
CC
PV
CC
Tjmax
Pd
Topr
Tstg
Rating
15
15
15
125
1000
*1
−30
to 85
−55
to 150
Unit
V
V
V
°C
mW
°C
°C
*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
●Operating
Conditions (Ta=-30°C ~+85°C)
Parameter
Power supply voltage
Regulator power supply voltage
Driver power supply voltage
Symbol
V
CC
REGV
CC
PV
CC
Limits
Min.
2.7
4.5
2.7
Max.
13
14
13
Unit
V
V
V
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© 2009 ROHM Co., Ltd. All rights reserved.
1/18
2009.07 - Rev.B
BD8150KVT
Technical Note
●Electrical
Characteristics (Unless otherwise specified, V
CC
= 5 V, REGV
CC
= 12V, Ta = 25°C)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
[ (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
V
NON
12
−0.1
−
V
CC
−1
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
V
CC
0.7
V
CC
−
V Step-down operation
Low-side threshold voltage
Vudl
−
0
V
CC
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 V
NON
Low-side threshold voltage 2
Vdel22
0.4
0.5
0.6
V DET2 HL,Inverting sweep up V
NON
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
−
% V
CC
= 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 ]
FB3
1.212
1.25
1.288
V
Feedback voltage
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
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© 2009 ROHM Co., Ltd. All rights reserved.
2/18
2009.07 - Rev.B
BD8150KVT
Technical Note
●Electrical
Characteristics (Unless otherwise specified, V
CC
= 5 V, REGV
CC
= 12 V, Ta = 25°C)
Limit
Unit
Conditions
Parameter
Symbol
Min.
Typ.
Max.
[ (2) Driver ]
Switching frequency
Fsw34
200
250
300
kHz
Frequency variation
Fc34
−
10
−
% V
CC
= 3V to 13V
[ (2) Detector ]
Vdeh3
0.9
1.0
1.1
V DET3 L
H, sweep up INV3
High-side threshold voltage
Vdeh4
0.1
0.2
0.3
V DET4 L
H, sweep down NON4
Vdel3
0.6
0.7
0.8
V DET3 H
L, sweep down NON3
Low-side threshold voltage
Vdel4
0.4
0.5
0.6
V DET4 H
L, sweep up NON4
Vdh3
4.8
5.0
−
V
DET3 min. output voltage
Vdl3
−
0
0.2
V
Vdh4
4.8
5.0
−
V
DET4 max. output voltage
Vdl4
−
0
0.2
V
[ (3) Low-dropout regulator]
Feedback voltage
FBR
1.237
1.25
1.263
V Buffer, Io =
−10mA
Input bias current
Ibr
−3
−0.1
3
μA
Buffer
I/O voltage difference
∆Vdr
−
0.2
0.5
V Io =
−10mA
Output current capacity
Io
−
−130
−50
mA V
REG
= 0V
Input stability
RegI
−
1
10
mV REGV
CC
= 4.5V to 14V
Load stability
RegL
−
1
10
mV Io = 1mA
10mA
Ripple rejection ratio
RR
35
50
−
dB f = 120Hz
[ (4) Buffer Amp ]
Input offset voltage
Voso
−10
0
10
mV
Input bias current
Ibo
−3
−0.1
3
μA
IN+ = 6V
Driver current
Ioo
20
50
−
mA
Load stability
∆Vo
−
1
10
mV Io = +1mA to
−1mA
Slew rate
SRo
−
2
−
V/μs
REGV
CC
REGV
CC
−
V Io =
−1mA,
IN+ = REGV
CC
Max. output current
Voho
−1.0
−0.8
Min. output current
Vohl
[ (5) Overall BG ]
BG output voltage
Vref
Input stability
∆Vi
Load stability
∆Vl
Output current capacity
Iovr
[ VREF17 ]
VREF17 output voltage
Vref17
Input stability
∆Vi17
Load stability
∆Vl17
Output current capacity
Iovr17
[ (5)CTL1 to CTL4 ]
High-side threshold voltage
Vcth
Low-side threshold voltage
Vctl
[ (5) Under-voltage lockout protection ]
Threshold voltage
Vuvlo
Hysteresis
Hys
[ (5)Total supply current ]
Standby current
Istb
Average consumption current
Icc
[ (5)All ENABLE ]
Sink current
Ies
[ (5)PG ]
Source current
Igso
Sink current
Igsi
−
1.225
−
−
0.2
1.666
−
−
0.2
V
CC
0.7
−
2.327
−
−
1.1
2
1.2
2
0.1
1.250
5
1
1
1.700
5
1
1
V
CC
0
2.45
0.1
0
2
4
2.5
5
0.16
1.275
20
10
−
1.734
20
10
−
−
V
CC
0.3
2.573
−
10
2.9
8
5
8
V
V
mV
mV
mA
V
mV
mV
mA
V
V
V
V
μA
mA
mA
mA
μA
ENABLE = 5V
CTL1 = CTL2 = 0V, PG = 2.5V
CTL1 = 5V, PG = 2.5V
Io = 1mA, IN+ = 0V
Io =
−0.1mA
V
CC
= 3V to 13V
Io = 0mA
0.1mA
BG = 0V
Io =
−0.1mA
V
CC
= 3V to 13V
Io = 0mA
0.1mA
VREF17 = 0V
Circuit active
Circuit off
* This product is not designed for protection against radio active rays.
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© 2009 ROHM Co., Ltd. All rights reserved.
3/18
2009.07 - Rev.B
BD8150KVT
●Electrical
Characteristics Curves (Unless otherwise specified, Ta = 25°C)
10
Technical Note
1
20
7.5
25℃
-40℃
125℃
0.8
IENBLE [mA]
]
15
ICC [mA]
5
ICC [uA]
0.6
10
0.4
2.5
0.2
5
0
0
4
8
12
16
0
0
4
8
12
16
0
0
4
8
VENBLE [V]
12
16
Vcc[V]
VCC [V]
Vcc[V]
VCC [V]
Fig. 1 Total Supply Current
1.27
10
Fig. 2 Standby Current
5
Fig. 3 ENB Pin Current
1.26
VREG [V]
8
4
1.25
IPG [uA]
IPG[mA]
6
3
4
2
1.24
2
1
1.23
-40
0
0
0
40
Ta [
℃
]
80
120
0
1
2
VPG [V]
3
4
5
0
1
2
VPG [V]
3
4
5
Fig. 4 VREG Voltage vs Temperature
6
4
4.5
6
Fig. 5 PG Pin Sinking
Current
Fig. 6 PG Pin Source Current
16
12
2
VOS [mV]
FB[V]
0
-2
-4
-6
0.75
125
℃
25
25
℃
-40
℃
3
Vo[V]
8
1.5
4
0
0.85
0.95
1.05
1.15
1.25
0
1
2
TIME [μS]
3
4
0
0
40
80
120
160
V
IN
[V]
Io[mA]
VCC [V]
Fig. 7 Error Amp Offset Voltage
Fig. 8 Error Amp Slew Rate Waveform
Fig. 9
Regulator Output Current Capacity
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© 2009 ROHM Co., Ltd. All rights reserved.
4/18
2009.07 - Rev.B
BD8150KVT
●Electrical
Characteristics Curves (Unless otherwise specified, Ta = 25°C)
150
150
300
Technical Note
120
125℃
120
25℃
-40℃
240
CD freq[kHz]
VOL[mV]
VOH[V]
90
90
125
25
℃
-40
℃
180
60
60
120
125
℃
60
25
℃
-40
℃
30
30
0
0
4
8
RegVcc [V]
12
16
0
0
4
8
RegVcc [V]
12
16
0
2
5.5
9
RegVcc [V]
12.5
16
Fig. 10 Charge Pump
PMOS On Resistance
10
10
Fig. 11 Charge Pump
NMOS On Resistance
4
Fig. 12 Charge Pump
Switching Frequency
7.5
VDET1[V]
VDET4[V]
7.5
2
VOS[mV]
5
5
0
2.5
2.5
-2
0
0
1
2
Vcc [V]
3
4
5
0
0
0.25
0.5
Vcc [V]
0.75
1
-4
0
2.8
5.6
V
IN
[V]
8.4
11.2
Fig. 13 Detectors 1 to 3
Threshold Voltage
12
Fig. 14 Detector 4
Threshold Voltage
100
Fig. 15 Buffer Amp
Offset Voltage
180
180
PHASE
144
144
9
GAIN [dB]
60
108
108
72
72
PHA [deg]
VO[V]
20
GAIN
36
36
0
0
6
-20
-36
-36
-72
-72
3
1V
1μs
-60
-108
-108
-144
-144
0
-60
-38
-16
IO [mA]
6
28
50
|
Fig. 17 Buffer Amp
Slew Rate Waveform
-180
-100
-180
1.E+0 1.E+0 1.E+0 1.E+0 1.E+0 1.E+0 1.E+0
2
3
4
5
6
7
8
f [Hz]
Fig. 16 Buffer Amp
Output current capacity
Fig.18 Buffer Amp
Open Loop
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© 2009 ROHM Co., Ltd. All rights reserved.
5/18
2009.07 - Rev.B
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