4-Channel LDO PMIC for Camera Applications

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The SGM38121 is a 4-channel LDO PMIC, which has two high efficiency and low output DVDD channels and two high PSRR and low noise AVDD channels. 

For DVDD1 and DVDD2, the SGM38121 uses NMOS architecture without a charge pump. IN1 is used as an input source and IN2 is used as bias voltage. The IN1 input voltage range is from 0.7V to 2V and IN2 input voltage range is from 3V to 5.5V respectively. The DVDD1 and DVDD2 output ranges are both from 0.528V to 1.504V. Both of them are capable of supplying 1200mA output current with ultra-low dropout voltage. 

For AVDD1 and AVDD2, the SGM38121 uses PMOS architecture with IN2 as an input source. Both of them can supply 1.504V to 3.424V output voltage with high PSRR performance. The output current limit is 330mA. The SGM38121 has an external EN pin, internal enable bits and sequence control register. Other features include UVLO, high resolution output voltage configuration, and hiccup function during OCP and UVP. The SGM38121 has automatic discharge function to quickly discharge output voltage in the disabled status. Besides, the SGM38121 supports 400kHz I2 C interface with register address automatic increment for continuous writing. 

The SGM38121 is qualified for phone camera sensors, camera sensors on wearable device. 

The SGM38121 is available in a Green TDFN-2×2-10L package. It operates over an operating temperature range of -40℃ to +85℃.

  • IN1 Input Voltage Range: 0.7V to 2V
  • IN2 Input Voltage Range: 3V to 5.5V
  • Supply Quiescent Current: 340μA (TYP)
  • Shutdown Current: 0.13μA (TYP)
  • UVLO: 2.43V (TYP)
  • DVDD1/2 Output Voltage Range: 0.528V to 1.504V
  • AVDD1/2 Output Voltage Range: 1.504V to 3.424V
  • DVDD1/2 Output Current: 1200mA
  • AVDD1/2 Output Current: 330mA
  • DVDD1/2 Dropout Voltage: 105mV (TYP) at 1200mA
  • AVDD1/2 Dropout Voltage: 120mV (TYP) at 300mA
  • AVDD1/2 Power Supply Rejection Ratio:
    90dB (TYP) at 1kHz
    85dB (TYP) at 10kHz
    70dB (TYP) at 100kHz
    55dB (TYP) at 1MHz
  • AVDD1/2 Output Noise: 9μVRMS (TYP)
  • -40℃ to +85℃ Operating Temperature Range
  • Available in a Green TDFN-2×2-10L Package

Camera Sensor
Smart Phone

Ordering Information
Part Number
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
-40℃ to +85℃

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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