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Numéro de référence | TEA2019 | ||
Description | CURRENT MODE SWITCHING POWER SUPPLY CONTROL CIRCUIT | ||
Fabricant | ST Microelectronics | ||
Logo | |||
1 Page
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
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Pages | Pages 7 | ||
Télécharger | [ TEA2019 ] |
No | Description détaillée | Fabricant |
TEA2014 | Video Switching Circuit for TV | Thomson Components |
TEA2014A | VIDEO SWITCH | ST Microelectronics |
TEA2015A | Vertical Sweep for Black and White and 60 Color TV Sets | Thomson |
TEA2017 | HORIZONTAL AND VERTICAL DEFLECTION MONITOR | ST Microelectronics |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
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