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參數(shù)資料
| 型號： | LM3100MHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-Down Voltage Regulator |
| 中文描述： | 1.9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 3/15頁 |
| 文件大?。?/td> | 1073K |
| 代理商： | LM3100MHX |
Pin Descriptions
Pin
Name
N/C
SW
Description
No Connection
Switching Node
Application Information
These pins must be left unconnected.
Internally connected to the buck switch source.
Connect to output inductor.
Supply pin to the device. Nominal input range is
4.5V to 36V.
Connect a 0.033μF capacitor from SW pin to this
pin. An internal diode charges the capacitor during
the high-side switch off-time.
Ground for all internal circuitry other than the
synchronous switches.
An internal 8μA current source charges an external
capacitor to provide the soft- start function.
Force the device into test mode. Must be connected
to ground for normal operation.
Internally connected to the regulation and
over-voltage comparators. The regulation setting is
0.8V at this pin. Connect to feedback divider.
Connect a voltage higher than 1.26V to enable the
regulator.
An external resistor from VIN to this pin sets the
high-side switch on-time.
Nominally regulated to 6V. Connect a capacitor of
not less than 680nF between VCC and GND for
stable operation.
Synchronous rectifier MOSFET source connection.
Tie to power ground plane.
Thermal connection pad, connect to GND.
1,9,10,12,19,20
2, 3
4, 5
VIN
Input supply voltage
6
BST
Connection for bootstrap capacitor
7
GND
Analog Ground
8
SS
Soft-start
11
TST
Test mode enable pin
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
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3100MHX/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 |
| LM3101 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Secondary-Side PWM Controller |
| LM3101M | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Secondary-Side PWM Controller |
| LM3101N | 制造商:Texas Instruments 功能描述: |
| LM3102 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ Synchronous 1MHz 2.5A Step-Down Voltage Regulator |
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