Texas Instruments LM3676
The LM3676 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.9V to 5.5V. It provides up to 600mA load current, over the entire input voltage range. The LM3676 has a mode-control pin that allows the user to select continuous Pulse Width Modulation (PWM) mode over the complete load range or an intelligent PFM-PWM mode that changes modes depending on the load.| Part No. | LM3676 |
|---|---|
| Datasheet | LM3676 Download |
| Manufacturer |  Texas Instruments |
| Description | 2-MHz 600-mA Step-Down DC-DC Converter |
| Buy | Stock & Price |
FEATURES
1●2 16µA Typical Quiescent Current
● 600mA Maximum Load Capability
● 2MHz Typical PWM Fixed Switching Frequency
● Automatic PFM/PWM Mode Switching or Forced PWM Mode
● Available in Fixed Output Voltages and Adjustable Version
● 8-Lead Non-Pullback WSON Package
● Internal Synchronous Rectification for High Efficiency
● Internal Soft Start
● 0.01µA Typical Shutdown Current
● Operates From a Single Li-Ion Cell Battery
● Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
● Current Overload and Thermal Shutdown Protection
APPLICATIONS
● Mobile Phones● PDAs
● MP3 Players
● WLAN
● Portable Instruments
● Digital Still Cameras
● Portable Hard Disk Drives
DESCRIPTION
There are several different fixed voltage output options available as well as an adjustable output voltage version. PWM mode offers superior efficiency under high load conditions (>100mA) and the lowest output noise performance. In Auto mode, PFM-PWM, hysteretic PFM extends the battery life through reduction of the quiescent current to 16µA (typ.) during light loads and system standby.
