 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
L4976 Datasheet(PDF) 1 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
L4976 Datasheet(HTML) 1 Page - STMicroelectronics |
|
|
1 / 11 page  UP TO 1A STEP DOWN CONVERTER OPERATING INPUT VOLTAGE FROM 8V TO 55V PRECISE 5.1V REFERENCE VOLTAGE OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V SWITCHING FREQUENCY ADJUSTABLE UP TO 500KHz VOLTAGE FEEDFORWARD ZERO LOAD CURRENT OPERATION INTERNAL CURRENT LIMITING (PULSE-BY- PULSE AND HICCUP MODE) PROTECTION AGAINST FEEDBACK DIS- CONNECTION THERMAL SHUTDOWN DESCRIPTION The L4976 is a step down monolithic power switching regulator delivering 1A at a voltage be- tween 3.3V and 50V (selected by a simple exter- nal divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transis- tor (with a typical Rdson of 0.25 Ω) to obtain very high efficency and high switching speed. A switching frequency up to 250KHz is achiev- able (the maximum power dissipation of the pack- ages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of today’s applications. Features of this new generations of DC-DC con- verter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedfor- ward regulation, protection against feedback loop disconnection and thermal shutdown. The device is available in plastic dual in line, MINIDIP 8 for standard assembly, and SO16W for SMD assembly. May 2000 ® ORDERING NUMBERS: L4976 (Minidip) L4976D (SO16) L4976 1A STEP DOWN SWITCHING REGULATOR Minidip SO16W 5 2 8 4 1 L4976 C1 220 µF 63V C8 330 µF VO=3.3V/1A Vi=8V to 55V R1 20K C2 2.7nF R2 9.1K C4 22nF 3 7 L1 260 µH (77120) 6 D1 GI SB360 C7 220nF C6 100nF TYPICAL APPLICATION CIRCUIT 1/11 |
Similar Part No. - L4976 |
|
Similar Description - L4976 |
|
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
New Zealand ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
