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6V 1A, ACOT® Buck Converter in Thin SOT-563 Package

RT5760A/RT5760B/RT5760C/RT5760D

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The RT5760A/B/C/D is a simple, easy-to-use, 1A synchronous step-down DC-DC converter with an input supply voltage range from 2.5V to 6V. The device build-in an accurate 0.6V reference voltage and integrates low RDS(ON) power MOSFETs to achieve high efficiency in a SOT-563 (FC) package.

The RT5760A/B/C/D 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 RT5760A/C operate in automatic PSM that maintain high efficiency during light load operation. The RT5760B/D operate in Forced PWM that help to meet tight voltage regulation accuracy requirements.

The RT5760A/B/C/D senses both FETs current for a robust over-current protection. The device features cycle-by-cycle current limit protection and prevent 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, and over-temperature protection to provide safe and smooth operation in all operating conditions.

應用

  • Mobile Phones and Handheld Devices
  • STB, Cable Modem, and xDSL Platforms
  • WLAN ASIC Power / Storage (SSD and HDD)
  • General Purpose for POL LV Buck Converter
主要規格
RT5760A RT5760B RT5760C RT5760D
Status Active Active Active Active
Vin (min) (V) 2.5 2.5 2.5 2.5
Vin (max) (V) 6 6 6 6
Number of Outputs 1 1 1 1
Vout (min) (V) 0.6 0.6 0.6 0.6
Vout (max) (V) 3.8 3.8 3.8 3.8
Output Adj. Method Resistor Resistor Resistor Resistor
Iout (max) (A) 1 1 1 1
Current Limit (typ) (A) 1.55 1.55 1.55 1.55
Freq (typ) (kHz) 2200 2200 2200 2200
Ext Sync No No No No
Ron_HS (typ) (mOhm) 120 120 120 120
Ron_LS (typ) (mOhm) 80 80 80 80
Iq (typ) (mA) 0.025 0.3 0.025 0.3
Features 100% Duty Cycle;ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;PSM;Power Good;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;Power Good;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;PSM;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type SOT-563(FC) SOT-563(FC) SOT-563(FC) SOT-563(FC)
關鍵特性
  • Input Voltage Range from 2.5V to 6V
  • Integrated 120mΩ and 80mΩ FETs
  • 1A Output Current, up to 95% Efficiency
  • 100% Duty Cycle for Lowest Dropout
  • 1% Internal Reference Voltage
  • 2.2MHz Typical Switching Frequency
  • Power Saving Mode for Light Loads (RT5760A/C)
  • Low Quiescent Current: 25μA (Typ.)
  • Fast Advanced Constant On-Time (ACOT®) Control
  • Internal Soft Startup (0.6ms)
  • Enable Control Input
  • Power Good Indicator (RT5760A/B)
  • Both FETs Over-Current Protection
  • Negative Over-Current Protection (RT5760B/D)
  • Input Under-Voltage Lockout Protection
  • Hiccup-Mode Output Under-Voltage Protection
  • Over-Temperature Protection
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
6V 1A, ACOT® Buck Converter in Thin SOT-563 Package2020/03/25
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