SY26138RAC

High Efficiency Fast Response 8A, 23V Input Synchronous Step Down Regulator

SY26138RAC High Efficiency Fast Response 8A, 23V Input Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part Number	SY26138RAC
Vin_min (V)	4
Vin_max (V)	23
Vo_min (V)	0.6
Io_max (A)	8
Vref Accuracy	±1%
Fsw (MHz)	0.6
Iq (uA)	120
Package	QFN3x3-20
Protection Mode	Hic-Cup SCP
Features / Special Function	Power Good Indicator, Hic-cup SCP, PFM/PWM

Low R_DS(ON) for Internal Switches (Top/Bottom): 22 mΩ /11 mΩ
Wide Input Voltage Range: 4~23V
Instant PWM Architecture to Achieve Fast Transient Responses
Internal 1.1ms Soft-start Limits the Inrush Current
Pseudo-constant Frequency: 600kHz
8A Output Current Capability
±1% Internal Reference Voltage
PFM/PWM Selectable Light Load Operation Mode
Optional Bypass Input
Power Good Indicator
Output Discharge Function
Output Current Limit Protection
Hiccup Mode Output Short Circuit Protection
Output Over Voltage Protection
Input UVLO
Over Temperature Protection with Auto Recovery
RoHS Compliant and Halogen Free
Compact Package: QFN3×3-20

The SY26138 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 8A current. The device integrates a main switch and a synchronous switch with very low R_DS(ON) to minimize the conduction loss.

The SY26138 operates over a wide input voltage range from 4V to 23V. The DC/DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light load. The device provides various protection features for reliable operation. In addition, it operates at pseudo-constant frequency of 600 kHz to minimize the size of inductor and capacitor.