CONTROL CIRCUIT. TEA2019 Datasheet

TEA2019 CIRCUIT. Datasheet pdf. Equivalent

Part TEA2019
Description CURRENT MODE SWITCHING POWER SUPPLY CONTROL CIRCUIT
Feature TEA2019 CURRENT MODE SWITCHING POWER SUPPLY CONTROL CIRCUIT . . . . . . . . . DIRECT DRIVE OF THE .
Manufacture ST Microelectronics
Datasheet
Download TEA2019 Datasheet

TEA2019 CURRENT MODE SWITCHING POWER SUPPLY CONTROL CIRCUIT TEA2019 Datasheet
Recommendation Recommendation Datasheet TEA2019 Datasheet




TEA2019
TEA2019
CURRENT MODE SWITCHING
POWER SUPPLY CONTROL CIRCUIT
. DIRECT DRIVE OF THE EXTERNAL
SWITCHING TRANSISTOR
. POSITIVE AND NEGATIVE OUTPUT CUR-
RENTS UP TO 0.5A
. CURRENT LIMITATION
. TRANSFORMER DEMAGNETIZATION AND
POWER TRANSISTOR SATURATION SENS-
ING
. FULL OVERLOAD AND SHORT-CIRCUIT
PROTECTION
. PROPORTIONAL BASE CURRENT DRIVING
. LOW STANDBY CURRENT BEFORE START-
ING (1.6mA)
. SYNCHRONIZATION CAPABILITY WITH IN-
TERNAL PLL
. THERMAL PROTECTION
Due to its current mode regulation, the TEA2019
facilitates design of power supplies with following
features :
. High stability regulation loop.
. Automatic input voltage feed-forward in dis-
continuous mode fly-back.
. Automatic pulse-by-pulse current limitation.
Typical applications : Video Display Units, TV sets,
typewriters, micro-computers and industrial appli-
cations. For more details, see application
note AN406/0591.
DESCRIPTION
The TEA2019 is an 14-pin DIP low cost integrated
circuit designed for the control of switch mode
power supplies. It has the same basic functions as
the TEA2018Abut with synchronization capability
by internal PLL. It is particularly suitable for appli-
cations where oscillator synchronization is re-
quired.
PIN CONNECTIONS
OUTPUT
AUXILIARY OUTPUT SUPPLY
POSITIVE SUPPLY VOLTAGE
SATURATION SENSING
DEMAGNETIZATION SENSING
ERROR AMPLIFIER NON-INVERTING INPUT
SYNCHRONIZATION INPUT
1
2
3
4
5
6
7
August 1992
DIP 14
(Plastic package)
ORDER CODE : TEA2019
14 NEGATIVE SUPPLY (OUTPUT STAGE)
13 SUBSTRATE
12 I C SAMPLE (NEGATIVE)
11 GROUND
10 OSCILLATOR CAPACITOR
9 OSCILLATOR REFERENCE CURRENT
8 PLL OUTPUT
1/7



TEA2019
TEA2019
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
V+CC
V(aux)
V–CC
IO (peak)
II
Tj
Toper
Tstg
Parameter
Positive Supply Voltage
Auxiliary Output Supply Voltage
Negative Supply Voltage
Peak Output Current (duty cycle < 5%)
Input Current
Pins 4-5
Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
2/7
Value
15
15
–5
±1
±5
150
– 20, + 70
– 40, + 150
Unit
V
V
V
A
mA
°C
°C
°C





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)