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參數(shù)資料
| 型號： | TPS61200DRCTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A BATTERY CHARGE CONTROLLER, 1650 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 1012K |
| 代理商： | TPS61200DRCTG4 |
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Softstart and Short-Circuit Protection
Undervoltage Lockout
Overtemperature Protection
SLVS577B – MARCH 2007 – REVISED FEBRUARY 2008
After being enabled, the device starts operating. At first it keeps the main output VOUT disconnected, and
charges the capacitor at VAUX. If the capacitor at VAUX is charged to about 2.5 V, the device switches to
normal operation. This means VOUT is turned on and the capacitor at VOUT is charged while the load
connected to the device is supplied. To ramp up the output voltage in a controlled way, the average current limit
is set to 400 mA and rise proportional to the increase of the output voltage. At an output voltage of about 1.2 V,
the current limit is at its nominal value. If the output voltage does not increase, the current limit will not increase.
There is no timer implemented. Thus the output voltage overshoot at startup, as well as the inrush current, is
kept at a minimum. The device ramps up the output voltage in a controlled manner even if a large capacitor is
connected at the output. When the output voltage does not increase above 1.2 V, the device assumes a
short-circuit at the output, and keeps the current limit low to protect itself and the application. When there is a
short at the output during operation, the current limit is decreased accordingly.
An undervoltage lockout function prevents the main output at VOUT from being supplied if the voltage at UVLO
drops below 0.25 V. When using a resistive divider at the voltage to be monitored, for example the supply
voltage, any threshold for the monitored voltage can be programmed. If in undervoltage lockout mode, the device
still maintains its supply voltage at VAUX, but it is not turned off until EN is programmed low. This undervoltage
lockout function is implemented in order to prevent the malfunctioning of the converter.
The device has a built-in temperature sensor which monitors the internal IC temperature. If the temperature
exceeds the programmed threshold (see electrical characteristics table), the device stops operating. As soon as
the IC temperature has decreased below the programmed threshold, it starts operating again. There is a built-in
hysteresis to avoid unstable operation at IC temperatures at the overtemperature threshold.
14
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS61200 TPS61201 TPS61202
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61200EVM-179 | 功能描述:電源管理IC開發(fā)工具 TPS61200EVM-179 Evaluation Module RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS61201 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER WITH 1.3-A SWITCHES |
| TPS61201DRC | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER WITH 1.3-A SWITCHES |
| TPS61201DRCR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.3V In Vltg Boost RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61201DRCRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.3V In 3.3V Out Vltg Boost Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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