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參數(shù)資料
| 型號： | TPS60251RTWT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)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(shù)： | 10/26頁 |
| 文件大小： | 783K |
| 代理商： | TPS60251RTWT |
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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
C3
1 F
m
SubDisplay
SCLK
I2CInterface
1.8VforI/O
Input
AuxiliaryPortforKeyPad
orFlashLight
R1
562kW
330 W
1 F
m
4.7 F
m
4.7 F
m
LAYOUT GUIDELINES
SLVS767C – APRIL 2007 – REVISED NOVEMBER 2007
Figure 21. The Typical Application Circuit for Sub, Main, and Keypad Backlight
Figure 21 shows the typical application circuit for sub, main, and keypad backlight. In this application, DM5 is
assigned as the auxiliary input for the keypad lighting application.
There are several points to consider when laying out a PCB for charge pump based solutions. In general, all
capacitors should be as close as possible to the device. This is especially important when placing the flying
capacitors (C2, C3 in Figure 20 and Figure 21). To provide accurate WLED current, the current path with the
current setting resistor must be short to avoid any interference from other switching components. In cases where
DM5 is assigned for torch/flash applications, with a maximum 80-mA WLED current, this current path must be
kept wide to reduce the trace resistance.
18
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s): TPS60251
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(qū)動(dòng)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(fēng)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 |
| TPS60252RTER | 功能描述:LED照明驅(qū)動(dòng)器 High Eff Charge Pump for 7 WLEDs 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS60252RTERG4 | 功能描述:LED照明驅(qū)動(dòng)器 Hi Eff Charge Pump for 7 WLEDs 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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