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參數(shù)資料
| 型號： | LM2705MFX-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower Step-up DC/DC Converter with 150mA Peak Current Limit |
| 中文描述： | 0.18 A SWITCHING REGULATOR, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 367K |
| 代理商： | LM2705MFX-ADJ |
Connection Diagram
Top View
20039702
SOT23-5
T
Jmax
= 125C,
θ
JA
= 220C/W
(Note 2)
Ordering Information
Order Number
LM2705MF-ADJ
LM2705MFX-ADJ
Package Type
SOT23-5
SOT23-5
NSC Package Drawing
MA05B
MA05B
Top Mark
S59B
S59B
Supplied As
1000 Units, Tape and Reel
3000 Units, Tape and Reel
Pin Description/Functions
Pin
1
2
3
4
5
Name
SW
GND
FB
SHDN
V
IN
Function
Power Switch input.
Ground.
Output voltage feedback input.
Shutdown control input, active low.
Analog and Power input.
SW(Pin 1):
Switch Pin. This is the drain of the internal
NMOS power switch. Minimize the metal trace area con-
nected to this pin to minimize EMI.
GND(Pin 2):
Ground Pin. Tie directly to ground plane.
FB(Pin 3):
Feedback Pin. Set the output voltage by selecting
values for R1 and R2 using:
Connect the ground of the feedback network to an AGND
plane which should be tied directly to the GND pin.
SHDN(Pin 4):
Shutdown Pin. The shutdown pin is an active
low control. Tie this pin above 1.1V to enable the device. Tie
this pin below 0.3V to turn off the device.
V
(Pin 5):
Input Supply Pin. Bypass this pin with a capacitor
as close to the device as possible.
L
www.national.com
2
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