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參數(shù)資料
| 型號(hào)： | NCP1501 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Dual Mode PWM/Linear Buck Converter(雙模PWM/線性降壓轉(zhuǎn)換器) |
| 中文描述： | 雙模式PWM /線性降壓轉(zhuǎn)換器（雙模的PWM /線性降壓轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 7/14頁(yè) |
| 文件大?。?/td> | 161K |
| 代理商： | NCP1501 |
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NCP1501
http://onsemi.com
7
Voltage Output Selection
The output voltage selection is accomplished via two
external pins: CB0 and CB1. If CB0 and CB1 pins are left
floating by the external circuit, the output voltage will
default to 1.35 V. The corresponding voltages are as follows.
NCP1501
CB0
CB1
V
out
(V)
0
0
1.05
0
1
1.35
1
1
1.57
1
0
1.80
Figure 6. Transition Waveforms from
LDO to PWM Mode
V
in
0
3.0
0
0
10
External SYNC Signal
Internal CLK Signal
TIME
1.35 V
Figure 7. Power Up and Power Down Sequence
1.8 V
1.05 V
1.57 V
V
in
SHD
V
O
CB0
CB1
Thermal Shutdown
Internal Thermal Shutdown circuitry is provided to
protect the integrated circuit in the event that the maximum
junction temperature is exceeded. When activated, typically
at 160
°
C, the PWM latch is reset and the linear regulator
control circuitry is disabled. The thermal shutdown circuit
is designed with 25
°
C of hysteresis. This means that the
PWM latch and the regulator control circuitry cannot be
reenabled until the die temperature drops by this amount.
This feature is provided to prevent catastrophic failures from
accidental device overheating. It is not intended as a
substitute for proper heatsinking. The NCP1501 is
contained in the Micro8 package.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1501DMR2 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual Mode Buck w/LDO RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| NCP1501DMR2G | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual Mode Buck w/LDO RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| NCP1508MNR2 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 High Efficiency Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| NCP1508MNR2G | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 High Efficiency Buck Synchronous DC/DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| NCP1509MNR2 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 High Efficiency Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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