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RV4145AMU 반도체 회로 부품 판매점

Low Power Ground Fault Interrupter



Fairchild Semiconductor 로고
Fairchild Semiconductor
RV4145AMU 데이터시트, 핀배열, 회로
RV4145A
Low Power Ground Fault Interrupter
www.fairchildsemi.com
Features
• No potentiomenter required
• Direct interface to SCR
• Supply voltage derived from AC line – 26V shunt
• Adjustable sensitivity
• Grounded neutral fault detection
• Meets U.L. 943 standards
• 450µA quiescent current
• Ideal for 120V or 220V systems
Description
The RV4145A is a low power controller for AC outlet
ground fault interrupters. These devices detect hazardous
grounding conditions, such as equipment (connected to
opposite phases of the AC line) in contact with a pool of
water and open circuits the line before a harmful or lethal
shock occurs.
Contained internally are a 26V zener shunt regulator, an op
amp, and an SCR driver. WIth the addition of two sense
transformers, a bridge rectifier, an SCR, a relay, and a few
additional components, the RV4145A will detect and protect
against both hot wire to ground and neutral wire to ground
faults. The simple layout and conventional design ensure
ease of application and long-term reliability.
Block Diagram
VFB
+Input
VREF
(+13V)
RV4145A
R1
10K
R2
10K
6.5V 6.5V 6.5V 6.5V
Op Amp Output
+VS
(+26V)
Ground
R3
4.7K
SCR Trigger
65-4145A-01
REV. 1.0.3 3/6/02


RV4145AMU 데이터시트, 핀배열, 회로
PRODUCT SPECIFICATION
Pin Assignments
8-Pin PDIP
8-Pin SOIC
VFB
+Input
VREF
GND
1
2
3
4
8
7
6
5
NC
Op Amp Output
+VS
SCR Trigger
NC
+Input
VREF
GND
8-Pin MSOP
18
27
36
45
VFB
Op Amp Output
+VS
SCR Trigger
65-4145A-02
RV4145A
Absolute Maximum Ratings
(beyond which the device may be damaged)1
Parameter
Min Typ Max Units
Supply Current
18 mA
Internal Power Dissipation
500 mW
Storage Temperature Range
-65
+150
°C
Operating Temperature Range
-35 +85 °C
Junction Temperature
125°C
Lead Soldering Temperature
60 Sec, DIP
300 °C
10 Sec, SOIC, MSOP
260 °C
PD TA < 50°C
SOIC
PDIP
300 mW
450 mW
MSOP
350 mW
For TA > 50°C Derate at
SOIC
PDIP
4 mW/°C
6 mW/°C
MSOP
4.7 mW/°C
Notes:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if
Operating Conditions are not exceeded.
Operating Conditions
Parameter
θJA Thermal resistance
SOIC
PDIP
MSOP
Min Typ Max Units
240 °C/W
160 °C/W
206 °C/W
2 REV. 1.0.3 3/6/02




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Low Power Ground Fault Interrupter - Fairchild Semiconductor



RV4145AMU

Low Power Ground Fault Interrupter - Fairchild Semiconductor