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BD8153EFV-E2

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
1/17
www.rohm.com
2009.07 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Power Supply IC Series for TFT-LCD Panels
5V Input Multi-channel
System Power Supply IC
BD8153EFV
●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 Unit
Power supply voltage VCC 7 V
Vo1 voltage Vo1 19 V
Vo2 voltage Vo2 32 V
SW voltage Vsw 19 V
Maximum junction temperature Tjmax 150 °C
Power dissipation Pd 1100* mW
Operating temperature range Topr -40 to 125 °C
Storage temperature range Tstg -55 to 150 °C
* Reduced by 4.7 mW/°C over 25°C, when mounted on a glass epoxy board.
(70 mm 70 mm 1.6 mm).
●Recommended Operating Ranges
Parameter Symbol
Limit
Unit
MIN MAX
Power supply voltage VCC 2.1 6 V
Vo1 voltage Vo1 8 18 V
SW voltage Vsw — 18 V
SW Current Isw — 1.8 A
Vo2 voltage Vo2 — 30 V
No.09035JBT09
BD8153EFV
Technical Note
2/17
www.rohm.com
2009.07 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
●Electrical Characteristics (Unless otherwise specified, VCC = 5 V; Vo1 = 15 V; Vo2 = 25 V; Ta = 25°C)
1 DC/DC Converter Block
Parameter Symbol
Limit
Unit Conditions
Min. Typ. Max.
[Soft start]
Source current Iso 6 10 14 μA Vss = 0.5 V
Sinking current Isi 0.1 0.2 1.0 mA Vss = 0.5 V,VDD = 1.65 V
[Error amp]
Input bias current 1 IFB1 — 0.1 0.5 μA
Feedback voltage 1 VFB1 1.227 1.240 1.253 V Buffer
Voltage gain AV — 200 — V/V *
Sinking current IoI 25 50 100 μA VFB = 1.5 V VCOMP = 0.5 V
Source current Ioo -100 -50 -25 μA VFB = 1.0 V VCOMP = 0.5 V
[SW]
ON resistance N-channel RON_N 50 200 600 mΩ *
Leak current N-channel ILEAKN — — 10 μA Vsw = 18 V
Maximum duty cycle DMAX 75 85 95 %
[Overcurrent protection]
Saw current limit Insw 2 3 — A *
2. Regulator controller
Parameter Symbol
Limit
Unit Conditions
Min. Typ. Max.
[Error amp]
VDD voltage VDD 3.2 3.3 3.4 V
Maximum base current IBMAX 4 7 11 mA
Line regulation RegI — 10 30 mV VCC = 4.5 V to 5.5 V
Load regulation RegL — 10 50 mV Io = 10 mA to 100 mA
[Under-voltage lockout protection]
Off threshold voltage VROFF 1.7 1.8 1.9 V
On threshold voltage VRON 1.6 1.7 1.8 V
This product is not designed for protection against radio active rays.
* Design guarantee (No total shipment inspection is made.)
BD8153EFV
Technical Note
3/17
www.rohm.com
2009.07 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
●Electrical Characteristics (Unless otherwise specified, VCC = 5 V; Vo1 = 15 V; Vo2 = 25 V; Ta = 25°C)
3.Charge pump
Parameter Symbol
Limit
Unit Conditions
Min. Typ. Max.
[Error amp]
Input bias current 2 IFB2 — 0.1 0.5 μA
Input bias current 3 IFB3 — 0.1 0.5 μA
Feedback voltage 2 VFB2 1.183 1.240 1.307 V
Feedback voltage 3 VFB3 0.15 0.2 0.25 V
[Delay start block]
Source current IDSO 3 5 7 μA VDLS = 0.5V
Sinking current IDSI 0.1
0.5
1.0 mA VDLS = 0.5V
Startup voltage VST 0.45 0.60 0.75 V
[Switch]
ON resistance N-channel RON_NC 0.5 2 4 Ω Io = 10 mA *
ON resistance P-channel RON_PC 0.5 4 8 Ω Io = -10 mA *
[Diode]
Voltage of diode Vf 600 710 800 mV Io = 10 mA
[Gate shading block]
ON resistance N-channel RON_NGS 2 10 20 Ω Io = 10 mA *
ON resistance P-channel RON_PGS 2 10 20 Ω Io = -10 mA *
Leak current N-channel ILEAK_NGS — — 10 μA
Leak current P-channel ILEAK_PGS — — 10 μA
High voltage IGH VDD × 0.7 VDD — V
Low voltage IGL — 0 VDD × 0.3 V
Input current IIG 8 16.5 30 μA IG = 3.3 V
4.Overall
Parameter Symbol
Limit
Unit Conditions
Min. Typ. Max.
[Reference block]
Reference voltage VREF 1.215 1.240 1.265 V
Drive current IREF — 23 — mA VREF = 0 V
Load regulation ∆V — 1 10 mV IREF = -1 mA
[Oscillator]
Oscillating frequency Fosc 0.94 1.1 1.265 MHz
[Oscillator]
DET 1 On threshold voltage VDON1 1.7 1.8 1.9 V
DET 1 Off threshold voltage VDOFF1 1.6 1.7 1.8 V
DET 2 On threshold voltage VDON2 1.02 1.12 1.22 V
DET 2 Off threshold voltage VDOFF2 0.90 1.00 1.10 V
DET 3 On threshold voltage VDON3 0.25 0.30 0.35 V
DET 3 Off threshold voltage VDOFF3 0.35 0.41 0.47 V
DET 4 On threshold voltage VDON4 1.02 1.12 1.22 V
DET 4 Off threshold voltage VDOFF4 0.90 1.00 1.10 V
[Device]
Average circuit current Icc 0.5 2 5 mA No switching
This product is not designed for protection against radio active rays.
* Design guarantee (No total shipment inspection is made.)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

BD8153EFV-E2

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LCD Drivers 4-CHANNEL SYST POWER 5V INPUT
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