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參數(shù)資料
| 型號(hào)： | LM2717 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual Step-down DC/DC Converter |
| 中文描述： | 雙降壓直流/直流轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 673K |
| 代理商： | LM2717 |
Pin Description
Pin
1
2
3
4
5
Name
PGND
PGND
AGND
FB1
V
C1
Function
Power ground. PGND and AGND pins must be connected together directly at the part.
Power ground. PGND and AGND pins must be connected together directly at the part.
Analog ground. PGND and AGND pins must be connected together directly at the part.
Fixed buck output voltage feedback input.
Fixed buck compensation network connection. Connected to the output of the voltage
error amplifier.
Bandgap connection.
Adjustable buck compensation network connection. Connected to the output of the voltage
error amplifier.
Adjustable buck output voltage feedback input.
Analog ground. PGND and AGND pins must be connected together directly at the part.
Analog ground. PGND and AGND pins must be connected together directly at the part.
Power ground. PGND and AGND pins must be connected together directly at the part.
Power ground. PGND and AGND pins must be connected together directly at the part.
Adjustable buck power switch input. Switch connected between V
IN
pins and SW2 pin.
Analog power input. V
IN
pins should be connected together directly at the part.
Analog power input. V
IN
pins should be connected together directly at the part.
Adjustable buck converter bootstrap capacitor connection.
Shutdown pin for adjustable buck converter. Active low.
Adjustable buck soft start pin.
Switching frequency select input. Use a resistor to set the frequency anywhere between
300kHz and 600kHz.
Fixed buck soft start pin.
Shutdown pin for fixed buck converter. Active low.
Fixed buck converter bootstrap capacitor connection.
Analog power input. V
IN
pins should be connected together directly at the part.
Fixed buck power switch input. Switch connected between V
IN
pins and SW1 pin.
6
7
V
BG
V
C2
8
9
10
11
12
13
14
15
16
17
18
19
FB2
AGND
AGND
PGND
PGND
SW2
V
IN
V
IN
CB2
SHDN2
SS2
FSLCT
20
21
22
23
24
SS1
SHDN1
CB1
V
IN
SW1
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2717_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Step-Down DC/DC Converter |
| LM2717-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Step-Down DC/DC Converter |
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| LM2717MT | 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK |
| LM2717MT/NOPB | 功能描述:DC/DC 開(kāi)關(guān)控制器 DUAL STEP-DOWN DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK |
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