STR-A6251 ALLEGRO [Allegro MicroSystems], STR-A6251 Datasheet - Page 2

• Manufacturer Part Number: STR-A6251
• Description: Universal-Input/15 W 50 kHz Flyback Switching Regulators
• Manufacturer: ALLEGRO [Allegro MicroSystems]

2
STR-A6251 and STR-A6252
Universal-Input/15 W 50 kHz
Flyback Switching Regulators
FUNCTIONAL BLOCK DIAGRAM
Copyright © 2005 Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
This data sheet is based on Sanken data sheet SSE-23297 and SSE-23298.
Automatic Burst Stand-By (intermittent operation)
Input Power <0.1 W at No Load
Auto-Bias Function
Stable Burst Operation Without Generating Interference
Internal Off-Timer Circuit
Built-In Constant-Voltage/Constant Current
Multiple Protections:
Pulse-by-Pulse Overcurrent Protection (OCP)
Overload Protection (OLP) with Auto Restart
Latching Overvoltage Protection (OVP)
Undervoltage Lockout (UVLO) with Hysteresis
Latching Thermal Shutdown (TSD)
Molded Small-Size 8-Pin Package
For Low-Height SMPS
FEATURES
AND
BENEFITS (cont’d)