LM2734YQMK/NOPB Part Information

Details for LM2734YQMK/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM2734 regulator is a monolithic, highfrequency, PWM step-down DC-DC converter in a 6pin Thin SOT package. The device 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 and online design support through WEBENCH, the LM2734 regulator is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-ofthe-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734 regulator uses 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

  • 0.8-V to 18-V Output Voltage Range
  • 0.8-V, 2% Internal Voltage Reference
  • 1-A Output Current
  • 3.0-V to 20-V Input Voltage Range
  • 30-nA Shutdown Current
  • 300-mu2126 NMOS Switch
  • 550-kHz (LM2734Y) and 1.6-MHz (LM2734X) Switching Frequencies
  • Current-Mode, PWM Operation
  • Internal Soft-Start
  • LM2734XQ and LM2734YQ are AEC-Q100 Grade
  • Thermal Shutdown
  • Thin SOT-6 Package
  • WEBENCHu00ae Online Design Tool

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 3V
Input Voltage Max 20V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOT-23
No. of Pins 6Pins
Output Current 1A
Output Voltage Min 800mV
Output Voltage Max 18V
Switching Frequency 660kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Min 0.8V
Base Number 2734
Frequency 550kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Voltage 18V
Primary Input Voltage 20V
Supply Voltage Min 3V
Switch Output Current Isw Max 2.5A
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • 3 to 20 V input, 1 A, automotive step-down converter with light load efficiency | Texas Instruments

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