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The RTQ2102A and RTQ2102B are 1.5A, high-efficiency, Advanced Constant-On-Time (ACOT®) synchronous step-down converters. The device operates with input voltages from 3V to 6V. The device can program the output voltage between 0.45V to VIN. The low quiescent current design with the integrated low RDS(ON) power MOSFETs achieves high efficiency over the wide load range. 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 and RTQ2102B provide up to 2.7MHz switching frequency to minimize the size of output inductor and capacitors.

The RTQ2102A and RTQ2102B provide complete protection functions such as input undervoltage lockout, output undervoltage protection, overcurrent protection, and thermal shutdown.

The cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RTQ2102A and RTQ2102B are available in WDFN-8L 3x3 package.

Applications

  • 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.
RTQ2102A-QA RTQ2102B-QA
Status Active Active
Vin (min) (V) 3 3
Vin (max) (V) 6 6
Number of Outputs 1 1
Vout (min) (V) 0.45 0.45
Vout (max) (V) 3.3 3.3
Output Adj. Method Resistor Resistor
Iout (max) (A) 1.5 1.5
Current Limit (typ) (A) 3.2 3.2
Freq (typ) (kHz) 2700 2700
Ext Sync No No
Ron_HS (typ) (mOhm) 110 110
Ron_LS (typ) (mOhm) 90 90
Iq (typ) (mA) 0.03 0.03
Features 100% Duty Cycle;ACOT Control;AEC-Q100;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;AEC-Q100;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 WDFN3x3-8
Features
  • AEC-Q100 Grade 1 Qualified
  • Input Supply Voltage Range: 3V to 6V
  • Output Voltage Range: 0.45V to VIN
  • 1.5A Converter Integrated 110mΩ and 90mΩ FETS in WDFN-8L 3x3 Package
  • Advanced Constant On-Time (ACOT®) Control
    ► Ultrafast Transient Response
    ► No Needs for External Compensations
    ► Optimized for Low-ESR Ceramic Output Capacitors
  • Low Quiescent Current: 30μA
  • Steady Switching Frequency: 2.7MHz
    ► Automatic Power Saving Mode (PSM)
  • Input Undervoltage Lockout (UVLO)
  • Output Undervoltage Protection (UVP) with Hiccup Mode
  • Over-Temperature Protection (OTP)
  • Power Good Indication
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Featured Product Tree [Aug., 2023] Selection Guide2023/08/07
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RTQ2102AGQW-QAWDFN3x3-81,500 Request Digikey 1,490 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Please confirm with our distributor or sales representative for actual stock status.
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