Semtech Corporation SC4521
The SC4521 is a current mode switching regulator with an integrated switch, operating at 600kHz with programmable soft start and enable functions. The integrated switch allows for cost effective low power solutions (peak switch current 3 amps). The low shutdown current makes it ideal for portable applications where battery life is important.| Part No. | SC4521 |
|---|---|
| Datasheet | SC4521 Download |
| Manufacturer |  Semtech Corporation |
| Description | 3A Step-Down Switching Regulator |
| Buy | Stock & Price |
DESCRIPTION
High frequency operation allows for very small passive components. Current mode operation allows for fast dynamic response and instantaneous duty cycle adjustment as the input varies (ideal for CPE applications where the input is a wall plug power). The SC4521 is an 600kHz switching regulator with a low pin count. The SC4521 allows customers to use large capacitive loads because its programmable soft start limits the dv/ dt of the output at start up. SC4521FEATURES
Wide operating voltage range: 4.4V to 24V Integrated 3 Amp switch 600kHz frequency of operation Programmable soft start funchion Current mode control Precision enable threshold SO-8 EDP Lead-free package, fully WEEE and RoHS compliantAPPLICATIONS
XDSL modems CPE equipment DC-DC point of load applications Portable equipment Digtial consumer electronics Typical Application Circuit D1 1 VIN Enable C3 2 5 8 BST IN EN SS SW 3 6 C1 L1 VOUT SC4521 GND 4 FB COMP R1 7 D2 R2 C2 C6 C4 R3 Revision:...
