loading

1.5A, 1MHz, 6V CMCOT Synchronous Step-Down Converter

RT5796D

Update Alert Share

The RT5796D is a high efficiency synchronous step-down DC/DC converter. Its input voltage range is from 2.5V to 6V and provides an adjustable regulated output voltage from 0.6V to 3.4V while delivering up to 1.5A of output current.

The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The Current Mode Constant-On-time (CMCOT) operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The RT5796D is available in the TSOT-23-5 and TSOT-23-6 packages.

Applications

  • STB, Cable Modem, & xDSL Platforms
  • LCD TV Power Supply & Metering Platforms
  • General Purpose Point of Load (POL)
  • Internet of Things
Key Spec.
RT5796D
Status Active
Vin (min) (V) 2.5
Vin (max) (V) 6
Number of Outputs 1
Vout (min) (V) 0.6
Vout (max) (V) 3.4
Preset Vout (V)
Output Adj. Method Resistor
Iout (max) (A) 1.5
Current Limit (typ) (A) 1.8
Freq (typ) (kHz) 1000
Freq (min) (kHz)
Freq (max) (kHz)
Ext Sync No
Ron_HS (typ) (mOhm) 160
Ron_LS (typ) (mOhm) 110
Iq (typ) (mA) 0.3
Features Force PWM;OCP;UVP
Package Type TSOT-25;TSOT-26
Features
  • Efficiency Up to 95%
  • RDSON 160mΩ HS / 110mΩ LS
  • VIN Range 2.5V to 6V
  • VREF 0.6V with ±2% Accuracy
  • CMCOT Control Loop Design for Best Transient Response, Robust Loop Stability with Low-ESR (MLCC) COUT
  • Fixed Soft-Start 1.2ms; PGOOD Function in TSOT-23-6
  • Cycle-by-Cycle Over Current Protection
  • Input Under Voltage Lockout
  • Output Under Voltage Protection (UVP Hiccup)
  • Thermal Shutdown Protection
Datasheet
TitleLast UpdateShareDownload
1.5A, 1MHz, 6V CMCOT Synchronous Step-Down Converter2015/09/11
Videos
TitleLast UpdateShareViews
How to estimate control loop bandwidth from the transient response time?2017/03/30 522
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2018/11/01
Design Tool
TitleLast UpdateShare
Richtek Designer™ Web Simulation Tool : RT5796DHGJ62019/04/16
TOP