參數(shù)資料
型號(hào)： TPS65150RGE
廠商： Texas Instruments, Inc.
英文描述： Low Input Voltage, Compact LCD Bias IC With VCOM Buffer
中文描述： 低輸入電壓，緊湊型LCD偏置集成電路VCOM緩沖器
文件頁(yè)數(shù)： 14/28頁(yè)
文件大?。?/td> 1126K
代理商： TPS65150RGE
www.ti.com
Q3
IDRVP
DRVP
Current
Control
Soft Start
FBP
Cfly
Vs
R5
R6
C13
0.47 F
VGH
23 V/50 mA
SUP = V
IN
for V
S
> = 15 V
SUP = V
S
for V
S
< = 15 V
Vout
1.213
1
R5
R6
R5
R6
Vout
V
FB
1
R6
Vout
1.213
1
(1)
Negative Charge Pump
The negative charge pump provides a regulated output voltage set by the external resistor divider. The negative
charge pump operates very similar to the positive charge pump with the difference that the voltage on the supply
pin SUP is inverted. The maximum output voltage for a single stage charge pump inverter is VGL = (–VSUP) +
Vdrop. Vdrop is the voltage drop across the external diodes and internal charge pump MOSFETs.
Vout
VREF
R3
R4
1.213 V
R3
R4
R3
R4
Vout
VREF
R4
Vout
1.213
(2)
TPS65150
SLVS576–SEPTEMBER 2005
DETAILED DESCRIPTION (continued)
Figure 17. Extract of the Positive Charge Pump Driver
If higher output voltages are required another charge pump stage can be added to the output, as shown in Figure
21 at the end of the data sheet. To minimize quiescent current a high impedance feedback divider should be
used. The top feedback resistor should not be selected larger than 1M
.
Setting the output voltage:
Setting the output voltage:
The lower feedback resistor value, R4, should range between 40 k
to 120 k
; or, the overall feedback
resistance should be within 500 k
to 1 M
. Smaller values load the reference too heavily; and larger values
may cause stability problems. The negative charge pump requires two external Schottky diodes. The peak
current rating of the Schottky diode has to be twice the load current of the output. For a 20-mA output current,
the BAT54 dual Schottky diode is a good choice.
14
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TPS65150RGER 功能描述:LCD 驅(qū)動(dòng)器 Compact LCD Bias Supply IC RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65150RGERG4 功能描述:LCD 驅(qū)動(dòng)器 Compact LCD Bias Supply IC RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65154RSLR 制造商:Texas Instruments 功能描述:IC TRIPLE-OUT LCD SUPPLY 48VQFN
TPS65155RKPR 功能描述:LCD 驅(qū)動(dòng)器 LCD Bias Solution RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65160APWP 功能描述:其他電源管理 Bias Power Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
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