LM2831XSD/NOPB Part Information

Details for LM2831XSD/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Buy LM2831XSD/NOPB Directly from Texas Instruments (6153 in stock) at $0.6160

Part Description

The LM2831 regulator is a monolithic, highfrequency, PWM step-down DC-DC converter in a 5pin SOT-23 and a 6-Pin WSON package. The LM2831 provides all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2831 is easy to use. The ability to drive 1.5-A loads with an internal 130-mΩ PMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3 V to 5.5 V input operating range, down to the minimum output voltage of 0.6 V. Switching frequency is internally set to 550 kHz, 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies of up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2831 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

Part Downloads

Part Features

  • 0.6-V, 2% Internal Voltage Reference
  • 1.5-A Output Current
  • 130-mu2126 PMOS Switch
  • Current Mode, PWM Operation
  • High Switching Frequencie u2013 1.6 MHz (LM2831X) u2013 0.55 MHz (LM2831Y) u2013 3 MHz (LM2831Z)
  • Input Voltage Range of 3 V to 5.5 V
  • Internal Soft Start
  • Output Voltage Range of 0.6 V to 4.5 V
  • Overvoltage Protection
  • Space-Saving SOT-23 Package
  • Thermal Shutdown

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 3V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case WSON
No. of Pins 6Pins
Output Current 1.5A
Output Voltage Min 600mV
Output Voltage Max 4.5V
Switching Frequency 1.95MHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
Operating Temperature Min -40°C
Primary Input Voltage 5.5V
RoHS Compliant

Alternative Part Descriptions

  • High Frequency 1.5A Load - Step-Down DC-DC Regulator | Texas Instruments

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