STMicroelectronics TEA5170
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 primary side of the main transformer. 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.| Part No. | TEA5170 |
|---|---|
| Datasheet | TEA5170 Download |
| Manufacturer |  STMicroelectronics |
| Description | SWITCH-MODE POWER-SUPPLY |
| Buy | Stock & Price |
DESCRIPTION
An accurate regulated voltage is obtained by duty cycle control. PIN CONNECTIONS SOFT-START CAPACITOR SUPPLY VOLTAGE POWER OUTPUT CSF V CC P OUT 1 2 3 4 8 7 6 5 RT CT OSCILLATOR RESISTOR OSCILLATOR CAPACITOR GROUND GND E OUT VOLTAGE ERROR AMPLIFIER OUTPUT VOLTAGE ERROR AMPLIFIER E INVERTING INPUT 5170-01.EPS September 1993 1/9 TEA5170 BLOCK DIAGRAM Rt 8 Comparator Ct 7 OSCILLATOR LOGIC (SYNCHRO) POWER OUTPUT STAGE 2.7V Csf 1 SOFT START AND DUTY CYCLE LIMITING PWM LOGIC Error Amplifier E- 5 x -1 PWM 2V V CC Monitor 6 Eout 4 GND 2 V CC 3 P out 5170-02.EPSABSOLUTE MAXIMUM RATINGS
Symbol VCC Tj Tstg Supply Voltage Operating Junction Temperature Storage Temperature Range Parameter Value 15 150 – 40, + 150 Unit V °C °C 5170-01.TBL 5170-03.TBL 5170-02.TBL THERMAL DATA Symbol Rth (j-a) Parameter Junction-ambient Thermal Resistance Value 90 Unit °C/W RECOMMANDED OPERATING CONDITIONS Symbol VCC RT CT Fosc Fsy Tamb VRT VCT ISOURCE Power Supply Voltage Timing Resistor Timing Capacitor Oscillator Frequency Synchro Frequency Operating Ambient Temperature Voltage on Pin RT (8) Current on Pin CT (1) Output Current 30 Parameter Min.
