|
|
Numéro de référence | FR9808 | ||
Description | 500KHz Synchronous PWM-Buck DC/DC Converter | ||
Fabricant | Fiti | ||
Logo | |||
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
metal–oxide–semiconductor 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
|
|||
Pages | Pages 13 | ||
Télécharger | [ FR9808 ] |
No | Description détaillée | Fabricant |
FR9801 | 600KHz Synchronous Step-Down DC/DC Converter | Fiti |
FR9801E | 600KHz Synchronous Step-Down DC/DC Converter | Fiti |
FR9802 | 1.2MHz Synchronous Step-Down DC/DC Converter | Fiti |
FR9806 | 500KHz Synchronous PWM-Buck DC/DC Converter | Fiti |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
www.DataSheetWiki.com | 2020 | Contactez-nous | Recherche |