MC34166
features consist of cycle- by- cycle current limiting, undervoltage lockout, and thermal shutdown. Also included is a low power standby mode that reduces power supply current to 36 m A.
Features
- Output Switch Current in Excess of 3.0 A
- Fixed Frequency Oscillator (72 k Hz) with On- Chip Timing
- Provides 5.05 V Output without External Resistor Divider
- Precision 2% Reference
- 0% to 95% Output Duty Cycle
- Cycle- by- Cycle Current Limiting
- Undervoltage Lockout with Hysteresis
- Internal Thermal Shutdown
- Operation from 7.5 V to 40 V
- Standby Mode Reduces Power Supply Current to 36 m A
- Economical 5- Lead TO- 220 Package with Two Optional Leadforms
- Also Available in Surface Mount D2PAK Package
- Moisture Sensitivity Level (MSL) Equals 1
- Pb- Free Packages are Available
Vin
ILIMIT
Oscillator
UVLO
Thermal
Reference
EA 1
This device contains 143 active transistors.
Figure 1. Simplified Block Diagram (Step Down Application)
VO 5.05 V/...
