LM2831YMF/NOPB Part Information

Details for LM2831YMF/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

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.

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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 SOT-23
No. of Pins 5Pins
Output Current 1.5A
Output Voltage Min 600mV
Output Voltage Max 4.5V
Switching Frequency 700kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Max 4.5V
Adjustable Output Voltage Min 0.6V
Base Number 2831
Frequency 700kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Voltage 600mV
Primary Input Voltage 5.5V
Supply Voltage Min 3V
Switch Output Current Isw Max 2.5A
Termination Type Surface Mount Device
Voltage Regulator Type Voltage Regulator
RoHS Compliant

Alternative Part Descriptions

  • 1.5A Step-Down DC-DC Regulator,LM2831YMF | RS Components
  • V REG 1.5A 550KHZ BUCK, SOT-23-5; Topology:Buck (Step Down); Input Voltage Min:3V; Input Voltage Max:5.5V; No. of Outputs:1Outputs; DC / DC Converter IC Case:SOT-23; No. of Pins:5Pins; Output Current:1.5A; Output Voltage Min:600mV; RoHS Compliant: Yes | Newark Electronics
  • High Frequency 1.5A Load - Step-Down DC-DC Regulator | Texas Instruments
  • Switching controller IC [Texas Instruments] LM2831YMF/NOPB Switching controller IC | Distrelec

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