Texas Instruments LM3153
The LM3151/2/3 SIMPLE SWITCHER Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. The synchronous architecture provides for highly efficient designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated Ripple Mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple.| Part No. | LM3153 |
|---|---|
| Datasheet | LM3153 Download |
| Manufacturer |  Texas Instruments |
| Description | SIMPLE SWITCHER CONTROLLER |
| Buy | Stock & Price |
FEATURES
1●234 PowerWise™ Step-down Controller
● 6V to 42V Wide Input Voltage Range
● Fixed Output Voltage of 3.3V
● Fixed Switching Frequencies of 250 kHz/500 kHz/750 kHz
● No Loop Compensation Required
● Fully WEBENCH® Enabled
● Low External Component Count
● Constant On-Time Control
● Ultra-Fast Transient Response
● Stable with Low ESR Capacitors
● Output Voltage Pre-bias Startup
● Valley Current Limit
● Programmable Soft-start
TYPICAL APPLICATIONS
● Telecom● Networking Equipment
● Routers
● Security Surveillance
● Power Modules
DESCRIPTION
Operating with an input voltage range from 6V-42V, the LM3151/2/3 features a fixed output voltage of 3.3V, and features switching frequencies of 250 kHz, 500 kHz, and 750 kHz. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity. Fault protection features such as thermal shutdown, under-voltage lockout, over-voltage protection, shortcircuit protection, current limit, and output voltage prebias startup allow for a reliable and robust solution.
