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ROHM Semiconductor |
Datasheet
EARTH LEAKAGE CURRENT DETECTOR IC SERIES
EARTH LEAKAGE
CURRENT DETECTOR IC
BD95850F-LB
Description
This is the product guarantees long time support in
Industrial market.
The BD95850F-LB is the monolithic IC integrates earth
leakage detection, signal amplification, and overvoltage
detection .
Especially, it’s suitable for high-sensitivity and high
-speed operation use, and, since the operating
temperature range is wide, it can be used for various
applications.
Features
■ Long Time Support Product for Industrial Applications
■ Small Temperature Fluctuation
and High Input Sensitivity
■ Wide Operating Temperature Range
■ Detection Mode Selectable
(1 count method /1.5 count method)
Applications
■ Earth leakage circuit breaker
■ Earth leakage circuit relay
■ Industrial equipment
Key Specifications
■ Operating Supply Voltage Range:
7V to 13V
■ Operating Temperature Range:
-30°C to +95°C
■ Supply Current:
830μA(Typ)
■ Trip Voltage(Leakage Detection DC Voltage): 7.5mV
■ Output Current Ability :
-100μA(Min)
Package
SOP14
W(Typ) x D(Typ) x H(Max)
8.70mm x 6.20mm x 1.71mm
Typical Application Circuit Example
Trip
Coil
VCC
SCR
VCC CTTDC COFFC
COS
RVS
CVS VZ 14 13 12 11 10 9 8
VS
VCC PSAV IBLI
TTDC OFFC SCRT
Power
Supply
Overvoltage Reset
Detection
SCR
Driver
Leakage Detection
IREF VREF ILKI
TRC1 TRC2 PSEL
1234567
CRC1 CRC2
VCC
ZCT:Zero-phase Current Transformer
○Product structure:Silicon monolithic integrated circuit
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 .14.001
○This product has no designed protection against radioactive rays
1/19 TSZ02201- 0RCR1GZ00130-1-2
13.Jun.2014 Rev.001
BD95850F-LB
Datasheet
Pin Configurations
SOP14
(TOP VIEW)
14 13 12 11 10 9 8
Block Diagrams
14
VS
13
VCC
Power Supply
12
PSAV
11 10
IBLI TTDC
Overvoltage
Detection
9
OFFC
Reset
8
SCRT
SCR
Drive
Leakage Detection
123456 7
IREF
VREF
ILKI
TRC1
TRC2
PSEL
1234567
Pin Descriptions
Pin No. Symbol
Function
Pin No. Symbol
Function
1 GND Ground
8 SCRT Output for driving thyristor
2
IREF
Connect a resistor to set constant
current of the internal circuits
9
OFFC Connect a capacitor to set reset time
3 VREF Reference voltage output
10
TTDC
Connect a capacitor to set over-voltage
detection time
4 ILKI Input of leakage detection signal 11 IBLI Input of over-voltage detection signal
5
TRC1
Connect a capacitor for charge
current of negative detection
6
TRC2
Connect a capacitor for charge
current of positive detection
7
PSEL
Logic function switching pin for
leakage detection
12
PSAV
Enable pin for overvoltage detection
function
13 VCC Internal power supply
14 VS Power supply
Absolute Maximum Ratings
(TA=25°C)
Parameter
Symbol
Rating
Unit
Condition
Supply Current
Supply Voltage (Note 1)
IS 4 mA
VS 18
V
Input Voltage
VΔIN -1.5 to +1.5
V across ILKI and VREF
Input Current
IΔIN -5 to +5 mA across ILKI and VREF
Input Current of VREF
Input Voltage
Input Voltage of Overvoltage Detection
IVREF
VXXXX
VIBLI
10
8
-0.3 to +5.0
mA across VREF and GND
IREF/REF/IN/TRC1/TRC2/
V PSEL/SCRT/OFFC/PSAV/
TTDC/VCC/IBLI
V across IBLI and GND
Input Current of Overvoltage Detection
Power Dissipation
IIBLI 4 mA across IBLI and GND
PD 0.56 (Note 2) W
Operating Temperature
Topr -30 to +95
°C
Storage Temperature
Tstg -55 to +150
°C
(Note 1) Supply voltage is limited by internal clamping circuit . Please refer to maximum current voltage of the electrical characteristic item.
(Note 2) Mounted on 70mm x 70mm x 1.6mm glass epoxy board. Reduce 4.5mW per 1°C above 25°C.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open
circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is
operated over the absolute maximum ratings.
Recommended Operating Conditions
Parameter
Supply Voltage
Symbol
VSopr
Rating
7 to 13
Unit
V
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 .15.001
2/19
TSZ02201- 0RCR1GZ00130-1-2
13.Jun.2014 Rev.001
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