High frequency 1 A automotive step-down DC/DC converter


Product details


Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 1 Iq (Typ) (mA) 3.3 Switching frequency (Min) (kHz) 1600 Switching frequency (Max) (kHz) 3000 Features Enable, Light Load Efficiency Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)


  • LM2830Z-Q1 and LM2830X-Q1 in the
    SOT-23 Package are Automotive-Grade
    Products thatare AEC-Q100 Grade 1
    Qualified (–40°C to +125°C Operating
    Junction Temperature)
  • Space-Saving SOT-23 Package
  • Input Voltage Range of 3.0 V to 5.5 V
  • Output Voltage Range of 0.6 V to 4.5 V
  • 1.0-A Output Current
  • High Switching Frequencies
    • 1.6 MHz (LM2830X)
    • 3.0 MHz (LM2830Z)
  • 130-mΩ PMOS Switch
  • 0.6-V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Overvoltage Protection
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The LM2830 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in a 5-pin SOT-23 and a 6-Pin WSON 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, the LM2830 regulator is easy to use. The ability to drive 1.0-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 1.6 MHz, or 3.0 MHz, allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2830 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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Similar but not functionally equivalent to the compared device:
LM2830 ACTIVE High frequency 1 A step-down DC/DC converter Not qualified for automotive.
LM2831 ACTIVE High Frequency 1.5A Load - Step-Down DC-DC Regulator Not automotive qualified and has higher Iout (1.5 A).
LM2832 ACTIVE High Frequency 2.0A Load - Step-Down DC-DC Regulator Not automotive qualified and has higher Iout (2 A).

Technical documentation

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Type Title Date
* Datasheet LM2830/-Q1 High-Frequency 1.0-A Load Step-Down DC-DC Regulator datasheet (Rev. E) Dec. 22, 2014
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

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