 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
L5971D Datasheet(PDF) 1 Page - STMicroelectronics |
|
||||||||||||||||||||||||||||||
L5971D Datasheet(HTML) 1 Page - STMicroelectronics |
|
|
1 / 11 page  UP TO 1.5A STEP DOWN CONVERTER OPERATING INPUT VOLTAGE FROM 6.5V TO 28V PRECISE 1.26V ( ±1%) INTERNAL REFER- ENCE VOLTAGE OUTPUT VOLTAGE ADJUSTABLE FROM 1.26V TO 20V SWITCHING FREQUENCY ADJUSTABLE UP TO 500KHz VOLTAGE FEEDFORWARD ZERO LOAD CURRENT OPERATION INTERNAL CURRENT LIMITING (PULSE-BY- PULSE AND HICCUP MODE) INHIBIT FOR ZERO CURRENT CONSUMP- TION PROTECTION AGAINST FEEDBACK DIS- CONNECTION THERMAL SHUTDOWN SOFT START FUNCTION DESCRIPTION The L5971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 1.26V and 20V (selected by a simple external divider). Realized in BCD mixed technol- ogy, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25 Ω)to ob- tain very high efficency and high switching speed. A switching frequency up to 500KHz is achiev- able (the maximum power dissipation of the pack- ages must be observed). 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, soft-start, protection against feedback loop disconnection, inhibit for zero cur- rent consumption and thermal shutdown. The device is available in plastic dual in line, MINIDIP 8 for standard assembly, and SO16 for SMD assembly. Typical Applications: - High efficiency step-down converter - Portable computers - Battery charger - Distributed power - PDAs and Mobile Comminicators May 2000 ® ORDERING NUMBERS: L5971 (Minidip) L5971D (SO16) L5971 1.5A STEP DOWN SWITCHING REGULATOR Minidip SO16W D98IN832C 5(11) 2(3) 8(14) 4(5,6) 1(2) L5971 C1 47µF 30V C8 330 µF VO=2.5V/1.5A Vi=6V to 28V R1 22K C2 1.2nF R2 9.1K C4 22nF 3(4) 7(13) L1 30 µH 6(12) D1 STPS 3L40U C5 47nF C6 100nF R3 R4 TYPICAL APPLICATION CIRCUIT 1/11 |
Similar Part No. - L5971D |
|
Similar Description - L5971D |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
