2A, 6V, Low IQ ACOT Synchronous Step-Down Converter


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The RTQ2103A is a full featured 6V, 2A, 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 RTQ2103A provides up to 2.7MHz switching frequency to minimize the size of output inductor and capacitors. The RTQ2103A is available in the SOP-8 (Exposed Pad) package.


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Key Spec.
Status Active
Vin (min) (V) 3
Vin (max) (V) 6
Number of Outputs 1
Vout (min) (V) 0.45
Vout (max) (V) 5.5
Preset Vout (V)
Output Adj. Method Resistor
Iout (max) (A) 2
Current Limit (typ) (A) 3.2
Freq (typ) (kHz) 2700
Freq (min) (kHz)
Freq (max) (kHz)
Ext Sync No
Ron_HS (typ) (mOhm) 130
Ron_LS (typ) (mOhm) 105
Iq (typ) (mA) 0.03
Features ACOT Control;AEC-Q100 Qualified;Fast Transient Response;PSM;Power Good
Package Type PSOP-8
  • AEC-Q100 Grade 1 Qualified
  • 3V to 6V Input Voltage Range
  • Advanced COT Control Loop Design
  • Fast Transient Response
  • Internal 130mΩ and 105mΩ 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
TitleLast UpdateShareDownload
2A, 6V, Low IQ ACOT Synchronous Step-Down Converter2017/08/31
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2017/03/31
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RTQ2103AGSP-QAPSOP-82500 Request Buy from Distributor