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SY2A22402BFCA (SA24401BFCA)

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1.8μA Quiescent Current, 0.6A, 40V Input Synchronous Step Down Regulator
Datasheet
SY2A22402BFCA 1.8μA Quiescent Current, 0.6A, 40V Input Synchronous Step Down Regulator Datasheet
Part number SY2A22402BFCA
Channel(#) 1
Vin (min) (V) 4.25
Vin (max) (V) 40
Switching frequency (min)(kHz) 2100
Switching frequency (max)(kHz) 2100
Vout (min) (V) 3.2
Vout (max) (V) 3.4
Iout (max) (A) 0.6
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 3
Vout accuracy(±%)
Control mode Peak current control
Duty cycle (max)(%) 94
Operation mode PFM
Iq (typ) (uA) 1.8
Features Enable,Power good,Fixed soft-start,Low Iq,UVP with hiccup,Low ISD,Cycle by cycle overcurrent protection,Pre-bias startup
Package SO8E
Operating temperature range(°C) -40 to 125
Functional safety category
  • Input Voltage Range: 4.25V to 40V  
  • Output Current Capability: 0.6A
  • Low RDS(ON) for Internal Switches: 225mΩ (Top), 150mΩ (Bottom) 
  • Low Quiescent Current: 1.8μA 
  • Switching Frequency: 2.1MHz 
  • Internal Soft-Start Limits the Inrush Current
  • Short-Circuit Protection 
  • Thermal Shutdown and Auto Recovery 
  • Power Good Indicator
  • Compact Package: SO8E
  • Automotive AEC-Q100 Grade 1 Certified 
The SY2A22402B high-efficiency synchro-nous step-down DC/DC converter operates over a wide input voltage range of 4.25V to 40V and delivers up to 0.6A load current. The device integrates very low RDS(ON) main and synchronous MOSFETs to minimize conduction losses. 
The SY2A22402B utilizes a peak current control strategy with a constant switching frequency. The SY2A22402B operates at a 2.1MHz switching frequency with a fixed output voltage of 3.3V. 
The device operates with low quiescent current to achieve high efficiency under light load conditions and includes an internal soft-start feature to limit inrush current during power-on. 
Short-circuit and thermal protection are provided for reliable operation.
The SY2A22402B is available in an SO8E package.
 

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Technical & Design Documentation

Title Date
DS_SY2A22402B Datasheet 2025-02-25
EVB_SY2A22402BFCA EVB User Guide 2025-02-25
Automotive_Solutions_Q2_2026 2026-06-12
SO8E 2022-05-20