Datenblatt-Suchmaschine für elektronische Bauteile |
|
ILC6377 Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
|
ILC6377 Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page www.fairchildsemi.com Rev. 1.5 November 2001 ©2001 Fairchild Semiconductor Corporation Features • ±2.5% accurate output voltages • Guaranteed 500mA output current • 95% efficiency • 55µA no load battery input current (ILC6377) • 1.5µA shutdown current • Built in short circuit and overcurrent protection • Undervoltage lockout and soft-start • External transistor drive available for higher IOUT • 300kHz operation • Automatic switchover to PFM mode at low currents for longest battery life (ILC6377) • Fixed 3.3V or 5V or adjustable output •SO-8 package Applications • Cellular Phones • Palmtops and PDAs • Portable Instrumentation • Buck Converter for Industrial / Networking Applications Description T he ILC6376/77 is a 95% efficient, 300kHz step-down DC- DC converter in an SO-8 package; capable of delivering 500mA output current. The device is also capable of driving an external FET for higher output current applications. The ILC6376/77 uses a unique p-channel architecture with built-in charge pump to maintain low on-resistance, even at low input voltages. The ILC6376 operates in PWM mode with 300kHz switching frequency. The ILC6377 does the same at high and medium load currents. When the load current drops and the device hits approximately 25% duty cycle, ILC6377 automatically switches over to PFM or pulse skipping mode. PFM (pulse frequency modulation) mode of operation extends efficiency at light loads. Start-up is controlled via an external soft-start capacitor. The device will automatically re-enter start-up mode when an output current overload condition is sensed; thus providing automatic short-circuit protection. Voltage lockout prevents faulty operation below the minimum operating voltage level. In shutdown, the ILC6376/77 consumes only 1.5µA current. The ILC6376/77SOXX offers fixed 3.3V or 5V output while ILC6376/77SOADJ allows adjustable output. Both versions of ILC6376/77 are available in an SO-8 surface mount package. Typical Applications + VOUT ILC6376/77 (TOP VIEW) 3 4 5 1 2 6 7 8 + CL VIN S/D CSS SD1 L *CIN Fig 1. Typical step-down DC-DC converter application 22 µH 47 µF 10 µF ILC6376/77 0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown ©2001 Fairchild Semiconductor Corporation SD1: SS12 Schottky Diode (FAIRCHILD) CL: 10V/47µF Tantalum Capacitor (NICHICON, F93) CSS: 4700pF Ceramic Capacitor CIN: 16V / 10µF Tantalum Capacitor (NICHICON, F93) |
Ähnliche Teilenummer - ILC6377 |
|
Ähnliche Beschreibung - ILC6377 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller 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 |