SG1844JSLASHDESC datasheet(6/12 Pages) MICROSEMI

6 / 12 page

C URRENT -M ODE PWM C ONTROLLER

SG1844/SG1845 Series

PRODUCT DA T ABOOK 1996/1997

Rev. 1.4

4/00

P RODUCTION D ATA S HEET

GRAPH / CURVE INDEX

Characteristic Curves

FIGURE #

DROPOUT VOLTAGE vs. TEMPERATURE

OSCILLATOR TEMPERATURE STABILITY

CURRENT SENSE TO OUTPUT DELAY vs. TEMPERATURE

START-UP CURRENT vs. TEMPERATURE

REFERENCE VOLTAGE vs. TEMPERATURE

START-UP VOLTAGE THRESHOLD vs. TEMPERATURE

OSCILLATOR DISCHARGE CURRENT vs. TEMPERATURE

OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT AND

TEMPERATURE (SINK TRANSISTOR)

10. CURRENT SENSE THRESHOLD vs. ERROR AMPLIFIER OUTPUT

11. OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT AND

TEMPERATURE (SOURCE TRANSISTOR)

FIGURE INDEX

Application Information

FIGURE #

12. OSCILLATOR TIMING CIRCUIT

13. OSCILLATOR FREQUENCY vs. R

T FOR VARIOUS CT

Typical Applications Section

FIGURE #

14. CURRENT SENSE SPIKE SUPPRESSION

15. MOSFET PARASITIC OSCILLATIONS

16. BIPOLAR TRANSISTOR DRIVE

17. ISOLATED MOSFET DRIVE

18. ADJUSTABLE BUFFERED REDUCTION OF CLAMP LEVEL WITH

SOFTSTART

19. EXTERNAL DUTY CYCLE CLAMP AND MULTI-UNIT

SYNCHRONIZATION

20. OSCILLATOR CONNECTION

21. ERROR AMPLIFIER CONNECTION

SG1844J/DESC Scheda tecnica(PDF) 6 Page - Microsemi Corporation