SY21247CTMC

High Efficiency Fast Response 10A, 23V Input Synchronous Step Down Regulator

SY21247CTMC High Efficiency Fast Response 10A, 23V Input Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part Number	SY21247CTMC
Vin_min (V)	5.5
Vin_max (V)	23
Vo_min (V)	5.15
Io_max (A)	10
Vref Accuracy
Fsw (MHz)	0.6
Iq (uA)	110
Package	QFN4x3-13
Protection Mode	OVP,Latch-off SCP
Features / Special Function	Power Good Indicator,100mA LDO, fixed output voltage,Auto-Discharge

Low R_DS(ON) for Internal Switches (top/bottom): 18/8mΩ
Wide Input Voltage Range: 5.5-23V
Integrated Bypass Switch: 1.5Ω
Instant PWM Architecture to Achieve Fast Transient Responses
Internal 0.8ms Soft-start Limits the Inrush Current
Pseudo-constant Frequency: 600kHz.
10A Output Current Capability
+/-1.5% Output Voltage Accuracy
Power Good Indicator
Output Discharge Function
Output Current Limit Protection
Output Under Voltage, Over Voltage Latch Off Protection
Input UVLO
Over Temperature Protection
RoHS Compliant and Halogen Free
Compact Package: QFN4×3-13L

The SY21247C develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 10A current. The device integrates main switch and synchronous switch with very low R_DS(ON) to minimize the conduction loss. SY21247C also integrates a 100mA LDO with bypass switch.

The SY21247C operates over a wide input voltage range from 5.5V 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 loads. In addition, it operates at pseudo-constant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor.