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CAT102TBI Fiches technique(PDF) 1 Page - Catalyst Semiconductor

No de pièce CAT102TBI
Description  Precision, Adjustable Shunt Regulator
Download  9 Pages
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Fabricant  CATALYST [Catalyst Semiconductor]
Site Internet  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT102TBI Fiches technique(HTML) 1 Page - Catalyst Semiconductor

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CAT102
© 2007 Catalyst Semiconductor, Inc.
1
Doc. No. 4007 Rev. M
Characteristics subject to change without notice
Precision, Adjustable Shunt Regulator
(600mV Reference)
FEATURES
Low voltage reference: 600mV
Low temperature coefficient reference: 25ppm
Accurate 600mV reference voltage:
+6mV at TJ = 25ºC
High PSRR: 45dB at 300kHz
High line rejection: ±1mV (VCC from 2.2V to 18V)
Low supply current: 300µA
Open collector output
Directly drives optocouplers
Compact 5-lead SOT23 package
Industrial temperature range: -40ºC to 85ºC
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
600mV. Over a junction temperature from -40°C to
105°C the reference voltage is within 8mV of the
nominal 600mV. In addition, the error amplifier output
and the supply voltage pin are on separate pins.
Power supply rejection is a high 45dB at 300kHz. The
output, OUT, can sink 20mA at a maximum saturation
voltage of 250mV.
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 8.
FUNCTIONAL DIAGRAM
PIN CONFIGURATION
SOT-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 20mA.
NC
No connection
IN
Positive supply
+
+
OUT
FB
IN
VREF
600mV
Error
Amplifier
GND
3
5
2
1


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