Power
Wide Input Voltage Range Step-Down DC/DC Controller Features -55°C to 150°C Operating Junction Temperature
Linear Technology Corporation announces the H- and MP- grade versions of the LTC3851A, a wide input voltage range (4V to 38V) synchronous step-down DC/DC controller that encompasses a broad range of applications, including most intermediate bus voltages and battery chemistries. The strong onboard MOSFET gate drivers enable the use of high power external MOSFETs to produce output currents up to 25A with output voltages ranging from 0.8V to 5.5V, ideal for point-of-load requirements. These H- and MP-grade versions are tested and guaranteed to operating junction temperature ranges from -40°C to 150°C and -55°C to 150°C, respectively. Applications include automotive systems, industrial, medical, datacom and telecom.
A coThe LTC3851AH/-1 and LTC3851AMP/-1 are available in a thermally enhanced MSOP-16 package. The 1000-piece price starts at $2.24 each for the H-grade devices and $5.29 each for the MP-grade parts, respectively. For more information, visit www.linear.com/product/LTC3851A
Summary of Features: LTC3851A/-1
• VIN Range from 4V to 38V
• Strong Onboard N-Channel MOSFET Driver
• Current-Mode Control
• DCR or RSENSE Current Sense Options
• Programmable Current Limit Threshold Voltage
• Phase-Locked-Loop Synchronization
• Adjustable Soft-Start or Tracking
• Power Good Signal
• Fixed Operating Frequency or Synchronizable from 250kHz to 750kHz