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參數(shù)資料
| 型號： | PM6641 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, QCC48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, LEAD FREE, VQFP-48 |
| 文件頁數(shù)： | 28/47頁 |
| 文件大?。?/td> | 2254K |
| 代理商： | PM6641 |
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Device description
PM6641
34/47
Doc ID 13510 Rev 3
7.11.3
Thermal shutdown
If the device temperature exceeds 150 °C, a thermal protection is triggered. As a
consequence, the output soft end takes place for all the outputs of the PM6641 (VDDQ rail
(1.8 V), VTT, VTTREF, 1.5 V, 1.05 V) by closing the output discharge MOSFET (see
section for details).
The thermal protection condition is not latched: the device leaves this condition and
reactivates itself automatically when its temperature falls below 135 °C (i.e. there is a 15 °C
of hysteresis).
7.11.4
Input under voltage lock-out
The PM6641 AVCC pin is the device power supply input. This pin must be fed with 5 V,
±10% in order to allow the device to work properly. If this rail falls under 3.9 V typical
threshold, the input under voltage is detected and the device performs the under voltage
lock-out (UVLO) protection. When this event occurs, each regulator stops switching and the
following actions are performed:
●
The memory supply rails (VDDQ, VTT and VTTREF) are discharged by closing the
output discharge MOSFET (see Chapter 7.7: Outputs soft-end on page 29 section for
details);
●
Chipset power supply output rails (1V5 and 1V05 rails) are discharged through the low
side power MOSFETs;
●
The device is turned OFF.
The PM6641 is turned on again when the AVCC pin voltage reaches the UVLO on threshold
(about 4.1 V).
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| PM6670ASTR | 3 A SWITCHING CONTROLLER, QCC24 |
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| PM6670STR | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6670S | 3 A SWITCHING CONTROLLER, QCC24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6641TR | 功能描述:低壓差穩(wěn)壓器 - LDO Monolithic VR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| PM6644 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 350mA adjust SD reg 4.5V to 25V 350mA 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6644TR | 功能描述:DC/DC 開關(guān)控制器 350 mA adj step-down 4.5 to 25V -40, 150c RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| PM6650 | 制造商:Qualcomm 功能描述:Electronic Component |
| PM6652 | 功能描述:DC/DC 開關(guān)控制器 Single Phase CNTR Intel MVP 6.5 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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