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RT5717

Ultra-Low Quiescent Current RBCOT Buck Converter

RT5717
New

The RT5717 is a high efficiency synchronous buck converter with typical 60nA ultra-low quiescent current.It provides high efficiency at light loads down to 1μA. Its input voltage range is from 1.8V to 5.5V. The RT5717 provides 16 selectable output voltage levels by connecting a resistor between the RSEL pin and GND while delivering output current up to 0.75A/1.2A/1.5A.The Ripple-Based Constant On-Time (RBCOT) control enhances load and line transient response, optimizing performance over a wide range of loads and output capacitors.The RT5717 is available in XWL-CSP-6B 0.96x 1.245 (BSC) and WDFN-8JAL 2x1.5 (FC) packages. The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.

Applications

  • Hand-Held Devices
  • Asset Tracking Devices
  • Battery Powered Equipment
  • Wearable Devices
  • Internet of Things
  • Smart Meters, Smart Thermostats

Key Spec.

RT5717
Status Active
Vin (min) (V) 1.8
Vin (max) (V) 5.5
Number of Outputs 1
Vout (min) (V) 0.5
Vout (max) (V) 4
Output Adj. Method Resistor
Iout (max) (A) 1.5
Current Limit (typ) (A) 1.2;2.04;2.4
Freq (typ) (kHz) 1500
Ron_HS (typ) (mOhm) 120
Ron_LS (typ) (mOhm) 50
Iq (typ) (mA) 0.00006
Interface RESL
Features Enable Input;Internal Compensation;OCP;OTP;SCP;Selectable (PSM or PWM)
Package Type XWL-CSP0.96x1.245-6(BSC);WDFN2x1.5-8JA(FC)

Features

  • 60nA Operating Quiescent Current

  • 25nA Shutdown Current

  • Input Voltage Range: 1.8V to 5.5V

  • 16 Selectable Output Voltages via RSEL Pin

  • RBCOT Control for Fast Transient Response

  • Pulse Frequency Mode (PFM) and Pulse Width Modulation (PWM) Mode Option

  • Up to 80% Efficiency at 1μA lOUT (VIN = 3.6V/VOUT = 1.8V)

  • Fault Stage Signal for MCU

  • Output Voltage Discharge

  • Undervoltage-Lockout Protection (UVLO)

  • Overcurrent Protection (OCP)

  • Over-Temperature Protection (OTP)

  • Automatic Transition to Bypass Operation with 120nA Quiescent Current

Datasheet

RT5717_DS-00.pdf

Datasheet

RT5717_DS-00.pdf

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