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CAT102 データシート(PDF) 1 Page - ON Semiconductor

部品番号 CAT102
部品情報  Precision, Adjustable Shunt Regulator (600 mV Reference)
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CAT102 データシート(HTML) 1 Page - ON Semiconductor

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CAT102
© 2009 SCILLC. All rights reserved.
1
Doc. No. MD-4007 Rev. P
Characteristics subject to change without notice
Precision, Adjustable Shunt Regulator
(600 mV Reference)
FEATURES
600 mV low voltage reference
±6 mV initial accuracy
High PSRR: 45 dB at 300 kHz
Better line regulation: 1 mV (VIN from 2.2 V to 18 V)
Low supply current: 90 µA
Open drain output
Directly drives optocouplers
Industrial temperature range of -40ºC to 85ºC
RoHS-compliant 5-lead TSOT23 package
APPLICATION
SMPS control loop
Low temperature coefficient voltage reference
Power management
Replaces zener diodes
Isolated DC-to-DC converters
Network, telecom and cellular base station
Adjustable voltage reference
DESCRIPTION
The CAT102 is a low-voltage reference and amplifier.
Designed for the control loop of low-voltage power
supplies, the reference voltage has been designed for
600 mV. Over a temperature from -40°C to 85°C, the
reference voltage is within 8 mV of the nominal
600mV. In addition, the error amplifier output and the
supply voltage pin (IN) are on separate pins.
Power supply rejection is a high 45 dB at 300 kHz.
The output, OUT, can sink 20 mA at a maximum
saturation voltage of 250 mV.
When combined with an optocoupler, the CAT102 can
be used as an error amplifier that controls the
feedback loop in isolated low-output voltage switching
power supplies.
For Ordering Information details, see page 7.
FUNCTIONAL DIAGRAM
PIN CONFIGURATION
TSOT-23 5L
Top View
FB 1 1
5
8 IN
GND 2 2
OUT 4 3
4
5 NC
PIN DESCRIPTION
Pin Name
Function
FB
Inverting input to error amplifier
GND
Ground
OUT
Output of error amplifier. Source & sink
current capability is 20 mA.
NC
No connection
IN
Positive supply
+
+
OUT
FB
IN
VREF
600mV
Error
Amplifier
GND
3
5
2
1


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