Texas Instruments LM3477
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.| Part No. | LM3477 |
|---|---|
| Datasheet | LM3477 Download |
| Manufacturer |  Texas Instruments |
| Description | High Efficiency High-Side N-Channel Controller |
| Buy | Stock & Price |
FEATURES
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
● Internet Appliances
● Printers and Office Automation
● Battery operated Devices
● Cable Modems
● Battery Chargers
DESCRIPTION
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. The LM3477/A uses a high switching frequency of 500kHz to reduce the overall solution size. Currentmode control requires only a single resistor and capacitor for frequency compensation. The current mode architecture also yields superior line and load regulation and cycle-by-cycle current limiting. A 5µA shutdown state can be used for power savings and for power supply sequencing.
