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RT5762

2A, 1.2MHz, 6V Synchronous Step-Down Converter in SOT-563 (FC) and UDFN-6L 1.4x1 (FC)

RT5762
New

The RT5762 is a simple, easy-to-use, 2A synchronous step-down DC-DC converter with an input supply voltage range from 2.5V to 6V. The device builds in an accurate 0.6V reference voltage and integrates low RDS(ON) power MOSFETs to achieve high efficiency in SOT-563 (FC) and UDFN-6L 1.4x1 (FC) packages.

The RT5762 adopts Advanced Constant On-Time (ACOT®) control architecture to provide an ultrafast transient response with few external components and to operate in nearly constant switching frequency over the line, load, and output voltage range. The RT5762A/C/E operates in automatic PSM that maintains high efficiency during light load operation. The RT5762B/D/F operates in Forced PWM that helps to meet tight voltage regulation accuracy requirements.

The RT5762 senses both FETs current for a robust over-current protection. The device features cycle-by-cycle current limit protection which prevents the device from the catastrophic damage in output short circuit, over current or inductor saturation. A built-in soft-start function prevents inrush current during start-up. The device also includes input under-voltage lockout, output under-voltage protection, over-voltage protection (RT5762AL/BL/CL/DL/EL/FL) and over-temperature protection to provide safe and smooth operation in all operating conditions.

Applications

  • Mobile Phones and Handheld Devices
  • STB, Cable Modem, and xDSL Platforms
  • WLAN ASIC Power / Storage (SSD and HDD)
  • General Purpose for POL LV Buck Converters

Key Spec.

RT5762A RT5762B RT5762C RT5762D RT5762E RT5762F
Status Active Active Active Active Active Active
Vin (min) (V) 2.5 2.5 2.5 2.5 2.5 2.5
Vin (max) (V) 5.5 5.5 5.5 5.5 5.5 5.5
Number of Outputs 1 1 1 1 1 1
Vout (min) (V) 0.6 0.6 0.6 0.6 0.6 0.6
Vout (max) (V) 5.5 5.5 5.5 5.5 5.5 5.5
Output Adj. Method Resistor Resistor Resistor Resistor Resistor Resistor
Iout (max) (A) 2 2 2 2 2 2
Current Limit (typ) (A) 2.3 2.3 2.3 2.3 2.3 2.3
Freq (typ) (kHz) 1200 1200 1200 1200 1200 1200
Ext Sync No No No No No No
Ron_HS (typ) (mOhm) 100 100 100 100 100 100
Ron_LS (typ) (mOhm) 70 70 70 70 70 70
Iq (typ) (mA) 0.023 0.023 0.023 0.023 0.023 0.023
Features 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC)

Features

  • Input Voltage Range from 2.5V to 6V

  • Integrated 100mΩ and 70mΩ FETs

  • 100% Duty Cycle for Lowest Dropout

  • Internal Reference Voltage with 1% Accuracy

  • 1.2MHz Typical Switching Frequency

  • Power Saving Mode for Light Loads (RT5762A/C/E)

  • Advanced Constant On-Time (ACOT®) Control

  • Internal Soft Startup (1.5ms)

  • Enable Control Input

  • Power Good Indicator

  • Negative Over-Current Protection (RT5762B/D/F)

  • Fully Protection with UVLO, OVP, UVP, Cycle-by-Cycle Current Limit and OTP

  • RoHS Compliant and Halogen Free

Datasheet

DS5762-03.pdf

Datasheet

DS5762-03.pdf

RT5762BHGH6F
Package Type:SOT-563(FC)
Sample Buy
RT5762CHGH6F
Package Type:SOT-563(FC)
Sample Buy
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