LM3477
www.ti.com SNVS141K – OCTOBER 2000 – REVISED MARCH 2013 LM3477 High Efficiency High-Side N-Channel Controller for Switching Regulator
Check for Samples: LM3477 FEATURES DESCRIPTION The LM3477/A is a high-side N-channel MOSFET
switching regulator controller. It can be used in
topologies requiring a high side MOSFET such as
buck, inverting (buck-boost) and zeta regulators. The
LM3477/A's internal push pull driver allows
compatibility with a wide range of MOSFETs. This,
the wide input voltage range, use of discrete power
components and adjustable current limit allows the
LM3477/A to be optimized for a wide variety of
applications. 1 2 500kHz Switching Frequency
Adjustable Current Limit
1.5% Reference
Thermal Shutdown
Frequency Compensation Optimized with a
Single Capacitor and Resistor
Internal Softstart
Current Mode Operation
Undervoltage Lockout with Hysteresis
8-lead (VSSOP-8) Package APPLICATIONS Local Voltage Regulation
Distributed Power
Notebook and Palmtop Computers …
