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BD8153EFV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD8153EFV
기능 5V Input Multi-channel System Power Supply IC
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BD8153EFV 데이터시트, 핀배열, 회로
Power Supply IC Series for TFT-LCD Panels
5V Input Multi-channel
System Power Supply IC
BD8153EFV
No.09035JBT09
Description
The BD8153EFV is a system power supply IC for TFT panels.A 1-chip IC providing a total of four voltages required for TFT
panels, i.e., logic voltage, sauce voltage, gate high-level, and gate low-level voltage, thus constructing a TFT panel power
supply with minimal components required.
Features (BD8153EFV)
1) Operates in an operating voltage range as low as 2.1 V to 6. 0 V.
2) Incorporates a step-up DC/DC converter.
3) Incorporates a 3.3-V regulator.
4) Incorporates positive and negative-side charge pumps.
5) Switching frequency of 1100 kHz
6) DC/DC converter feedback voltage of 1.24 V ± 1%
7) Incorporates a gate shading function
8) Under-voltage lockout protection circuit
9) Thermal shutdown circuit
10) Overcurrent protection circuit
11) HTSSOP-B24 package
Applications
Liquid crystal TV, PC monitor, and TFT-LCD panel
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limit
Power supply voltage
VCC
7
Vo1 voltage
Vo1 19
Vo2 voltage
Vo2 32
SW voltage
Vsw 19
Maximum junction temperature
Tjmax
150
Power dissipation
Pd 1100*
Operating temperature range
Topr -40 to 125
Storage temperature range
Tstg -55 to 150
* Reduced by 4.7 mW/°C over 25°C, when mounted on a glass epoxy board.
(70 mm 70 mm 1.6 mm).
Unit
V
V
V
V
°C
mW
°C
°C
Recommended Operating Ranges
Parameter
Power supply voltage
Vo1 voltage
SW voltage
SW Current
Vo2 voltage
Symbol
VCC
Vo1
Vsw
Isw
Vo2
Limit
MIN MAX
2.1 6
8 18
— 18
— 1.8
— 30
Unit
V
V
V
A
V
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© 2009 ROHM Co., Ltd. All rights reserved.
1/17
2009.07 - Rev.B




BD8153EFV pdf, 반도체, 판매, 대치품
BD8153EFV
Reference Data (Unless otherwise specified, Ta = 25°C)
1 10
0.8 125
8
0.6
25
0.4
6
4
125
25
0.2
-40
0
0
Fig. 1
1.5 3 4.5 6
SUPPLY VOLTAGE : VCC [V]
Total Supply Current 1
2
-40
0
0 1.5 3 4.5 6
SUPPLY VOLTAGE : VDD[V]
Fig. 2 Total Supply Current 2
1.6 1.6
1.2 1.2
0.8 0.8
0.4
0
0 1.5 3 4.5 6
SUPPLY VOLTAGE : VCC[V]
Fig. 4 Internal
Reference Line Regulation
12
10
8
6
4
2
0
0 1.5 3 4.5 6
SUPPLY VOLTAGE : VDD[V]
Fig. 7 DLS Source Current
200
160
120
80
40
0
0
0.2 0.4 0.6 0.8
SW CURRENT : ISW [A]
1
Fig. 10 SW On Resistance
0.4
0
0 5 10 15 20 25 30
REF CURRENT : IREF[mA]
Fig. 5 Internal
Reference Load Regulation
2
1.5
1
0.5
0
-450 -25 0 25 50 75 100 125
AMBIENT TEMPERATURE : Ta[]
Fig. 8 Switching Frequency
Temperature
200
160
120
N channel
80
P channel
40
0
0 20 40 60 80 100
INPUT CURRENT : Icp[mA]
Fig. 11 Charge Pump
On Voltage
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© 2009 ROHM Co., Ltd. All rights reserved.
4/17
Technical Note
1.26
1.25
1.24
1.23
1.22
-50 -25 0 25 50 75 100 125
AMBIENT TEMPERATURE : Ta[]
Fig. 3 Internal Reference
Temperature
12
10
8
6
4
2
0
0 1.5 3 4.5
SUPPLY VOLTAGE : VDD[V]
6
Fig. 6 SS Source Current
5
4
3
2
1
0
0 2 4 6 8 10
BASE CURRENT : IBASE[mA]
Fig. 9 REG Current Capacity
1
0.8
0.6
N channel
0.4
0.2
P channel
0
0 20 40 60 80 100
GS CURRENT : Igs[mA]
Fig. 12 Gate Shading
On Voltage
2009.07 - Rev.B

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BD8153EFV 전자부품, 판매, 대치품
BD8153EFV
Technical Note
Block Function
Step-up Controller
A controller circuit for DC/DC boosting.
The switching duty is controlled so that the feedback voltage FB1 is set to 1.24 V (typ.).
A soft start operates at the time of starting. Therefore, the switching duty is controlled by the SS pin voltage.
Charge Pump Control 1
A controller circuit for the positive-side charge pump.
The switching amplitude is controlled so that the feedback voltage FB2 will be set to 1.24 V (typ.).
The start delay time can be set in the DLS terminal at the time of starting.
When the DLS voltage reaches 0.6 V (Typ.), switching waves will be output from the C1L and C2L pins.
Charge Pump Control 2
A controller circuit for the negative-side charge pump.
The switching amplitude is controlled so that the feedback voltage FB2 will be set to 0.6 V (Typ.).
Gate Shading Controller
A controller circuit of gate shading.
The Vo2GS and GSOUT are in on/off control according to IG pin input.
Regulator Control
A regulator controller circuit for VDD voltage generation.
The base pin current is controlled so that VDD voltage will be set to 3.3 V (typ.).
DET 1 to DET 4
A detection circuit of each output voltage. This detected signal is used for the starting sequential circuit.
Start-up Controller
A control circuit for the starting sequence.
Controls to start in order of VCC VDD Vo1 Vo3 Vo2.
VREF
A block that generates internal reference voltage. 1.24V (Typ.) is output.
TSD/UVLO
Thermal shutdown/Under-voltage lockout protection/circuit blocks.
The thermal shutdown circuit is shut down at an IC internal temperature of 175°C and reset at 160°C.
The under-voltage lockout protection circuit shuts down the IC when the VCC is 1.8 V (typ.) or below.
Starting sequence
For malfunction prevention, starting logic control operates so that each output will rise in order of VCC VDD Vo1 Vo3 Vo2.
As shown below, detectors DET1 to DET3 detect that the output on the detection side has reached 90% (typ.) of the set voltage,
and starts the next block.
VCC
Reg VDD
DET1
CTL1
Step up
DC/DC
Vo1
DET2
CTL2
Negative
Charge
P um p
Vo3
DET3
CTL3
P o s itiv e
Charge
Pump
Vo2
Starting sequence model
DET4
C LT 4
5V
0 3.3V
0
0
Vcc
VDD
Vo2
Vo1
Vo3
Fig. 26 Starting Timing Chart
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© 2009 ROHM Co., Ltd. All rights reserved.
7/17
2009.07 - Rev.B

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BD8153EFV

5V Input Multi-channel System Power Supply IC

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