DataSheetWiki


FR9808 fiches techniques PDF

Fiti - 500KHz Synchronous PWM-Buck DC/DC Converter

Numéro de référence FR9808
Description 500KHz Synchronous PWM-Buck DC/DC Converter
Fabricant Fiti 
Logo Fiti 





1 Page

No Preview Available !





FR9808 fiche technique
fitipower integrated technology lnc.
FR9808
21V, 4A, 500KHz Synchronous PWM-Bu8c5kT
DC/DC Converter
Description
FR9808 is a high-efficiency synchronous step-down
DC/DC converter that employs a special process
technique to obtain very low RDS(ON) for the internal
metaloxidesemiconductor field-effect transistor
(MOSFET). The input operation voltage is in a wide
4.75V to 21V, and continuous load current capability
is 4A. Control circuit is designed by a particular
current mode which provides fast transient response
and eases loop stabilization.
This product has a very low standby current less
than 1μA in shutdown mode. When the EN/SYNC
pin voltage is less than 0.4V, FR9808 will turn off.
Fault protection includes over current protection
(OCP), under voltage lockout protection (UVLO) and
over temperature protection (OTP) function.
This high-efficiency current mode step-down “Green
Power Converter” offers the standard SOP-8
package with an exposed pad.
Features
High Efficiency up to 90%
Internal MOSFET RDS(ON): 120mΩ/20mΩ
Internal Compensation
Input Operation Voltage Range: 4.75V to 21V
4A Continuous Output Current
Output Voltage down to 0.805V
500KHz Oscillation Frequency
Sync to External Clock from 300 KHz to 800 KHz
Cycle-by-Cycle Current Limit
Under Voltage Lockout
Over-Temperature Protection with Auto Recovery
● <1μA Shutdown Current
Thermal Enhanced SOP-8 (Exposed Pad) Package
● RoHS Compliant
Applications
Networking equipment
OLPC, Netbook
Distributed power system
LCD monitor, TV, STB
External HDD
Security System
Pin Assignments
SP Package (SOP-8 Expose pad )
VIN 1
8 GND
SW 2 9 7 VCC
SW 3 GND 6 FB
BS 4
5 EN/SYNC
Ordering Information
FR9808□□□
TR: Tape / Reel
G: Green
Package Type
SP: SOP-8 (Exposed Pad)
Figure 1. Pin Assignment of FR9808
FR9808-1.1-SEP-2011
1

PagesPages 13
Télécharger [ FR9808 ]


Fiche technique recommandé

No Description détaillée Fabricant
FR9801 600KHz Synchronous Step-Down DC/DC Converter Fiti
Fiti
FR9801E 600KHz Synchronous Step-Down DC/DC Converter Fiti
Fiti
FR9802 1.2MHz Synchronous Step-Down DC/DC Converter Fiti
Fiti
FR9806 500KHz Synchronous PWM-Buck DC/DC Converter Fiti
Fiti

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche