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參數資料
| 型號： | TPS60251RTWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 750 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, QFN-24 |
| 文件頁數： | 9/26頁 |
| 文件大小： | 783K |
| 代理商： | TPS60251RTWR |
www.ti.com
APPLICATION CIRCUITS
C1+
SDAT
DS1 DS2 DM5
VIO
NC
GND
NC-G
NC
DM1
DM2
DM3
DM4
IS
ENA
GND
C2+
C2-
C1-
VOUT
VIN
MainDisplay
C1
C4
C2
1 F
m
C3
SubDisplay
SCLK
I2CInterface
1.8VforI/O
Input
R1
562kW
1 F
m
4.7 F
m
4.7 F
m
hLight +
I
O
V
F
V
in
I
O ) Iop
(7)
SLVS767C – APRIL 2007 – REVISED NOVEMBER 2007
Figure 20. The Typical Application Circuit for Sub and Main Display
As shown in Figure 20, this is a typical application circuit for a clam shell phone with 5 main LEDs and 2 sub
LEDs. Recently, the LCD panel makers have developed a new panel that has improved the transparency rate
which makes system efficiency with a 100-
A LED current a critical load point. To meet system efficiency
requirements with the light load conditions for the new LCD operating panel, the TPS60251 has a maximum
55-
A operating current with the 100-A output load condition. In this application, the controller always operates
in 1
× mode due to the WLED's low forward voltage drop (about 2.6V
F with a 100-A WLED current). Thus, the
total efficiency at a light load condition is determined using Equation 7:
Where:
IO: Output Load (WLED) Current
VF: Forward Voltage Drop of WLED
Vin: Input Voltage
Iop: Operating Current of LED Driver
Copyright 2007, Texas Instruments Incorporated
17
Product Folder Link(s): TPS60251
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS60251RTWRG4 | 功能描述:LED照明驅動器 High Eff Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS60251RTWT | 功能描述:LED照明驅動器 High Eff Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS60251RTWT | 制造商:Texas Instruments 功能描述:DC/DC Charge Pump Converter IC |
| TPS60251RTWTG4 | 功能描述:LED照明驅動器 High Eff Charge Pump RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS60252RTE | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE |
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