LM20143MHE/NOPB Part Information

Details for LM20143MHE/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM20143 devices are full featured PowerWise™ adjustable frequency synchronous buck regulators capable of delivering up to 3 A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95 V to 5.5 V, making it suited for a wide variety of low voltage systems. The device features internal over voltage protection (OVP) and over current protection (OCP) circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn-on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit. The frequency of this device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor from the RT pin to ground. The LM20143 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20143 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.

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Part Features

  • 32-mu2126 Integrated FET Switches
  • 97% Peak Efficiency
  • Accurate Current Limit Minimizes Inductor Size
  • Adjustable Output Voltage Down to 0.80 V
  • Adjustable Soft-Start with External Capacitor
  • Adjustable Switching Frequency (500 kHz to 1.5 MHz)
  • Available in AEC-Q100 Temperature Grade 1
  • Input Voltage Range: 2.95 V to 5.50 V
  • Integrated OVP, UVLO, Power Good and Thermal
  • Output Voltage Tracking
  • Peak Current Mode Control
  • Precision Enable Pin with Hysteresis
  • Starts into Prebiased Loads

Part Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 2.95V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case HTSSOP
No. of Pins 16Pins
Output Current 3A
Output Voltage Min 800mV
Output Voltage Max 5V
Switching Frequency 1.5MHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

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