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2.5A, 18V, 500kHz ACOT™ Synchronous Step-Down Converter

RT7294A

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The RT7294A is a synchronous step-down converter with Advanced Constant On-Time (ACOTTM) mode control. The ACOTTM provides a very fast transient response with few external components. The low impedance internal MOSFET supports high efficiency operation with wide input voltage range from 4.3V to 18V. The proprietary circuit of the RT7294A enables to support all ceramic capacitors. The output voltage can be adjusted between 0.6V and 8V.

Applications

  • Industrial and Commercial Low Power Systems
  • Computer Peripherals
  • LCD Monitors and TVs
  • Green Electronics/Appliances
  • Point of Load Regulation for High-Performance DSPs,
    FPGAs, and ASICs
Key Spec.
RT7294A
Status Active
Vin (min) (V) 4.3
Vin (max) (V) 18
Number of Outputs
Vout (min) (V) 0.6
Vout (max) (V) 8
Preset Vout (V)
Output Adj. Method Resistor
Iout (max) (A) 2.5
Current Limit (typ) (A) 3.4
Freq (typ) (kHz) 500
Freq (min) (kHz)
Freq (max) (kHz)
Ext Sync No
Ron_HS (typ) (mOhm) 150
Ron_LS (typ) (mOhm) 90
Iq (typ) (mA) 0.5
Features ACOT Control;Fast Transient Response;OCP;PSM;Stable with Ceramic Capacitor;UVP
Package Type TSOT-26(FC)
Features
  • 4.3V to 18V Input Voltage Range
  • 2.5A Output Current
  • Advanced Constant On-Time Control
  • Fast Transient Response
  • Support All Ceramic Capacitors
  • Up to 95% Efficiency
  • 500kHz Switching Frequency
  • Adjustable Output Voltage from 0.6V to 8V
  • Cycle-by-Cycle Current Limit
  • Input Under-Voltage Lockout
  • Hiccup Mode Under-Voltage Protection
  • Thermal Shutdown
  • Power Saving Mode for High Efficiency at Light Load
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
2.5A, 18V, 500kHz ACOT™ Synchronous Step-Down Converter2014/03/24
Technical Documents
TitleLast UpdateShareDownload
ACOT™ Stability Testing2019/03/18
ACOT™ (Advanced Constant-On Time) Synchronous Step-Down Converters2018/11/15
Comparing Buck Converter Topologies2018/09/20
Buck Converter Selection Criteria2016/08/04
The Calculation of Output DC Offset for ACOT™ Control Buck Converter with Feed-forward Compensator2016/07/07
SOT-23 FCOL Package Thermal Considerations2016/06/21
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 : RT7294AGJ6F2019/04/16
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT7294AGJ6FTSOT-26(FC)3000 Request Buy from Distributor
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