Programmable Power Management IC for Automotive Applications

  • Automotive
  • AEC-Q100
  • RoHS

Download Datasheet

  • QFN0505-32-P7


The RN5T5611 is a power management IC (PMIC) for automotive applications. This IC provides two highefficiency step-down DC/DC converters, a low-noise regulator, an interrupt controller (INTC), and I2C-bus interface. Power-supply start and stop sequences can be customized to meet user-system. In addition to the basic power control, this IC provides various protection functions.

Key Benefits

  • Compliance with ASIL-D
  • LDO regulator is provides low output noise, high ripple rejection and fast response characteristics.
  • Flexible selection such as sequence and enable simplifies power sequence control.
  • 2 ch Step-down DC/DC converters operate with 180° turn-on phase shift of the switching transistors.
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Input Voltage Range (Maximum Ratings) 3.0 V to 5.5 V (6.5 V)
Operating Temperature Range -40°C to 125°C
  • I2C-bus Interface: 1 MHz and 400 kHz
  • Window Voltage Detector for Internal DC/DC (REG1,2), LDO (REG3) and External pin
  • Thermal Shutdown
  • Soft-start Circuit
  • Flexible Setting (Output/Sequence/REG’s Reaction to Errors)
High Efficiency Step-down DC/DC Converters
  • Output Range: 1.0 V to 3.3 V (Max. 1 A)
  • Oscillator Frequency: 2.3 MHz
  • Operating Mode: Forced PWM Mode
  • Overcurrent / Reverse Current Protection (Latch)
Low Drop Voltage Regulator (Low Output Noise)
  • Output Range: 2.5 V to 3.5 V (Max. 200 mA)
  • Output Noise: Typ. 6 μVrms (Iout = 100 mA)
  • PSRR: Typ. 80 dB (@100 kHz)
  • Short Circuit Protection
Package QFN0505-32-P7 (0.5 mm pitch) (Wettable Flanks, Lead-less)

Typical Characteristics

  • PSRR

    PSRR (VIN = 5.0 V, VOUT = 2.9 V)

  • Output Noise

    Output Noise (IOUT = 100 mA)