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

RT5796A

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The RT5796A 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 RT5796A is available in the T/SOT-23-5 and T/SOT-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.
RT5796A
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
Ron_HS (typ) (mOhm) 160
Ron_LS (typ) (mOhm) 110
Iq (typ) (mA) 0.022
Features OCP;PSM;UVP
Package Type SOT-25;SOT-26;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 T/SOT-23-6
  • Cycle-by-Cycle Over Current Protection
  • Input Under Voltage Lockout
  • Output Under Voltage Protection (UVP Hiccup)
  • Thermal Shutdown Protection
  • Power Saving at Light Load
Datasheet
TitleLast UpdateShareDownload
1.5A, 1MHz, 6V CMCOT Synchronous Step-Down Converter2014/07/15
Videos
TitleLast UpdateShareViews
How to estimate control loop bandwidth from the transient response time?2017/03/30 522
Evaluation Boards
TitleLast UpdateShareDownload
1.5A, 1MHz, 6V CMCOT Synchronous Step-Down Converter2017/09/04
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2018/11/01
Design Tool
TitleLast UpdateShare
Richtek Designer™ Web Simulation Tool : RT5796AHGJ62019/04/16
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT5796AHGESOT-263000 Not available Buy from Distributor
RT5796AHGJ5TSOT-253000 Not available Buy from Distributor
RT5796AHGJ6TSOT-263000 Not available Buy from Distributor
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