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參數(shù)資料
| 型號(hào)： | LM3102MH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER㈢ Synchronous 1MHz 2.5A Step-Down Voltage Regulator |
| 中文描述： | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 330K |
| 代理商： | LM3102MH |
Pin Descriptions
Pin
Name
N/C
SW
Description
No Connection
Switching Node
Application Information
These pins must be left unconnected.
Internally connected to the source of the main
MOSFET and the drain of the Synchronous MOSFET.
Connect to the inductor.
Supply pin to the device. Nominal input range is 4.5V
to 42V.
Connect a 33 nF capacitor from the SW pin to this pin.
An internal diode charges the capacitor during the main
MOSFET off-time.
Ground for all internal circuitry other than the PGND
pin.
An 8 μA internal current source charges an external
capacitor to provide the soft- start function.
Must be connected to the AGND pin for normal
operation. The GND and AGND pins are not internally
connected.
Internally connected to the regulation and over-voltage
comparators. The regulation setting is 0.8V at this pin.
Connect to feedback resistors.
Connect a voltage higher than 1.26V to enable the
regulator.
An external resistor from the VIN pin to this pin sets the
main MOSFET on-time.
Nominally regulated to 6V. Connect a capacitor of not
less than 680 nF between the VCC and AGND pins for
stable operation.
Synchronous MOSFET source connection. Tie to a
ground plane.
Thermal connection pad. Connect to the ground plane.
1,9,10,12,19,20
2, 3
4, 5
VIN
Input supply voltage
6
BST
Connection for bootstrap capacitor
7
AGND
Analog Ground
8
SS
Soft-start
11
GND
Ground
13
FB
Feedback
14
EN
Enable pin
15
RON
On-time Control
16
VCC
Start-up regulator Output
17, 18
PGND
Power Ground
DAP
EP
Exposed Pad
3
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3102MH/NOPB | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 SYNC 1MHZ 2.5A STEP- DOWN VLTG REG 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 |
| LM3102MHX | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 4.5V to 42V 20-Pin TSSOP EP T/R |
| LM3102MHX/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(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 |
| LM3102QMH/NOPB | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 SIMPLE SWITCHER Sync 1MHz 2.5A SD Vtg Reg 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 |
| LM3102QMHX/NOPB | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 SIMPLE SWITCHER Sync 1MHz 2.5A SD Vtg Reg 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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