SQ20953AIC

Silergy
High Efficiency Fast Response, 3A, 30V Input Synchronous Step Down Regulator
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Технические характеристики

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Корпус SOT238
Конфигурация и полярность
Особенности
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Application Note: SQ20953 High Efficiency Fast Response, 3A, 30V Input Synchronous Step Down Regulator General Description Features The SQ20953 develops a high efficiency synchronous step-down DC/DC converter ， which is capable of delivering 3A load current. The SQ20953 operates over a wide input voltage range from 4.5V to 30V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. • Low RDS(ON) for Internal Switches (Top/Bottom): 110/70 mΩ • 4.5-30V Input Voltage Range • Internal Compensation • Internal 1ms Soft-start Limits the Inrush Current • Adjustable Switching Frequency Range: 500kHz to 2.5MHz • 3A Output Current Capability • 1.5% 0.6V Reference • Low Quiescent Current • Cycle-by-cycle Peak Current Limit • Short Circuit Protection • Thermal Shutdown and Auto Recovery • RoHS Compliant and Halogen Free • Compact Package: TSOT23-8 The SQ20953 adopts peak current control scheme. The switching frequency is adjustable from 500kHz to 2.5MHz using an external resistor. The device also features ultra low quiescent operating to achieve high efficiency under light load. The internal soft-start limits inrush current during power on. The SQ20953 is available in TSOT23-8 package. Ordering Information Ordering Number SQ20953AIC Applications Package type TSOT23-8 Note -- • • • • • • LCD-TV SetTop Box Notebook Storage High Power AP Router Networking Typical Applications Efficiency vs. Load Current (L=6.8µH/CDRH8D43-6R8) 100 BS IN VOUT L LX CIN R1 FB ON/ OFF R2 EN FS C1(opt.) COUT 80 Efficiency (%) CBS VIN 60 40 VIN=9V, VOUT=5V VIN=12V, VOUT=5V VIN=24V, VOUT=5V GND RFS 20 0 1 10 100 1000 10000 Load Current (mA) Figure 1. Schematic Diagram AN_SQ20953 Rev. 0.9 © 2020 Silergy Corp. Figure 2. Efficiency vs. Load Current 1 PDF
Документация на SQ20953AIC 

Дата модификации: 30.12.2024

Размер: 830.1 Кб

13 стр.

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