1.5A, 6V, Low IQ ACOT Synchronous Step-Down Converter


Update Alert Share

The RTQ2102A-QA is a full featured 6V, 1.5A, Advanced Constant-On-Time (ACOT) synchronous step-down converter with two integrated MOSFETs. The advanced COT operation allows transient responses to be optimized over a wide range of loads, and output capacitors to efficiently reduce external component count. The RTQ2102A-QA provides up to 2.7MHz switching frequency to minimize the size of output inductor and capacitors. The RTQ2102A-QA is available in the WDFN-8L 3x3 package.


  • 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
  • Automotive Infotainment
  • Automotive Instrument Clusters & HUD
  • Car Connectivity
Key Spec.
Status Active
Vin (min) (V) 3
Vin (max) (V) 6
Number of Outputs 1
Vout (min) (V) 0.45
Vout (max) (V) 3.3
Output Adj. Method Resistor
Iout (max) (A) 1.5
Current Limit (typ) (A) 3.2
Freq (typ) (kHz) 2700
Ext Sync No
Ron_HS (typ) (mOhm) 110
Ron_LS (typ) (mOhm) 90
Iq (typ) (mA) 0.03
Features 100% Duty Cycle;ACOT Control;AEC-Q100 Qualified;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;PSM;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WDFN3x3-8
  • 3V to 6V Input Voltage Range
  • Advanced COT Control Loop Design
  • Fast Transient Response
  • Internal 110mΩ and 90mΩ Synchronous Rectifier
  • Highly Accurate VOUT Regulation Over Load/Line Range
  • Robust Loop Stability with Low-ESR COUT
  • Automotive Temperature Range -40°C to 125°C
  • AEC-Q100 Grade 1 Qualified
TitleLast UpdateShareDownload
1.5A, 6V, Low IQ ACOT Synchronous Step-Down Converter2017/08/31
Technical Documents
TitleLast UpdateShareDownload
Automotive Product Selection Guide2020/12/30
Richtek Selection Guide [Oct., 2020]2020/12/30
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2021/01/21
Design Tool
TitleLast UpdateShare
Richtek Designer™ Web Simulation Tool : RTQ2102AGQW-QA2020/09/23
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RTQ2102AGQW-QAWDFN3x3-81500 Request Buy from Distributor