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TEA5170 Datasheet(PDF) 1 Page - STMicroelectronics

Part # TEA5170
Description  SWITCH MODE POWER SUPPLY SECONDARY CIRCUIT
PDF  9 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TEA5170 Datasheet(HTML) 1 Page - STMicroelectronics

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TEA5170
SWITCH MODE POWER SUPPLY SECONDARY CIRCUIT
September 1993
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SOFT-START CAPACITOR
SUPPLY VOLTAGE
POWER OUTPUT
GROUND
OSCILLATOR RESISTOR
OSCILLATOR CAPACITOR
VOLTAGE ERROR AMPLIFIER OUTPUT
VOLTAGE ERROR AMPLIFIER
INVERTING INPUT
RT
CT
E
E
OUT
OUT
P
CC
V
CSF
GND
PIN CONNECTIONS
DIP8
(Plastic Package)
ORDER CODE : TEA5170
.
INTERNAL PWM SIGNAL GENERATOR
.
POWER SUPPLY WIDE RANGE 4.5V – 14.5V
.
SOFT START
.
REFERENCE VOLTAGE 2V
± 5%
.
WIDE FREQUENCY RANGE 250kHz
.
MINIMUM OUTPUT PULSE WIDTH 500nS
.
MAXIMUM PRESET DUTY CYCLE
.
SYNCHRONIZATION WINDOW
.
OUTPUT SWITCH
.
UNDERVOLTAGE LOCKOUT
.
FREQUENCY RANGE WITH SYNCHRONIZA-
TION 64kHz
DESCRIPTION
The TEA5170 is designed to work in the secondary
part of an off-line SMPS, sending pulses to the
slaved TEA2260/61 which are located on the pri-
mary side of the main transformer. An accurate
regulated voltage is obtained by duty cycle control.
The TEA5170 can be externally synchronized by
higher or lower frequency signal, then it could be
used in applications like TV set ones. For more
details, refer to application note AN408/0591.
1/9


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