STC494 Pulse Width Modulation
Description
The STC494 is a monolithic integrated circuit which includes all the necessary...
STC494 Pulse Width Modulation
Description
The STC494 is a monolithic integrated circuit which includes all the necessary building blocks for the design of pulse width modulate(PWM) switching power supplies, including push-pull, bridge and series configuration. The device can operate at switching frequencies between 1KHz and 300KHz and output voltage up to 40V. The STC494 is specified over an operating temperature range of -40к to 85к .
Features
ΘUncommitted output
transistors capable of 200mA source or sink! ΘInternal protection from double pulsing of out-puts with narrow pulse widths or with! supply voltages bellows specified limits! ΘEasily synchronized to other circuits! ΘDead time control comparator! ΘOutput control selects single-ended or push-pull operation!
Ordering Information
Type NO. STC494 Marking STC494 Package Code SOP-16
Outline Dimensions
unit : mm
PIN Connections 1. Non-INV Input 2. INV Input 3. Feed-Back 4. Dead-Time Control 5. CT 6. RT
www.DataSheet4U.com
7. GND 8. C1 9. E1 10. E2 11. C2 12. Vcc 13 Output Control 14. Ref Out 15. INV-Input 16. Non-INV Input
1
STC494
Absolute Maximum Ratings
Characteristic
supply voltage Voltage From Any Pin to Ground (except pin 8 and pin 11) Output Collector Voltage Peak Collector Current Power Dissipation Operating Temperature Storage Temperature
S
Ta=25qC
Symbol
VCC VIN VC1, VC2 IC1, IC2 PD Topr Tstg
Ratings
42 VCC+0.3 42 250 1500 -40 ~ 85 -65 ~ 150
Unit
V V V mA mW qC qC
Recommended Operating Condition
Chara...