参数资料
型号: LR478L-3.4-S08-T
厂商: UNISONIC TECHNOLOGIES CO LTD
元件分类: 电源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO8
封装: LEAD FREE, SOP-8
文件页数: 2/8页
文件大小: 133K
代理商: LR478L-3.4-S08-T
LR478
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
2 of 8
www.unisonic.com.tw
QW-R112-001,B
PIN CONFIGURATION
8
7
6
5
1
2
3
4
N.C
RESET
CONT
VIN
VOUT
N.C
GND
Cd
PIN DESCRIPTION
PIN NO.
PIN NAME
FUNCTIONS
EQUIVALENT CIRCUIT DIAGRAM
1
N.C
2
RESET
Input voltage detection output
Input voltage detection output pin
RESET pin logic
RESET
VIN<VS
L
VIN>VS
H
RESET
3
CONT
Output voltage on/off-control pin
VCONT
Output
L
OFF
H
ON
Connect cont-terminal with VIN when it
is not used.
CONT
300K
400K
4
VIN
Voltage supply input pin
5
VOUT
Regulator Output pin
6
N.C
7
GND
GND pin
8
Cd
Delay time capacitor pin
RESET pin output delay time can be
set by the capacitance connected to
the Cd pin.
tPLH=100000.C
tPLH: transmission delay time[s]
C: capacitor value [F]
+
-
VOUT
Cd
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