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

Numéro de référence FR9810
Description 500KHz Synchronous PWM-Buck DC/DC Converter
Fabricant Fiti 
Logo Fiti 





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FR9810 fiche technique
fitipower integrated technology lnc. Preliminary
FR9810
21V, 6A, 500KHz Synchronous PWM-Buck
DC/DC Converter
Description
FR9810 is a high-efficiency synchronous mode
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), with operation voltage in a
wide 4.75V to 21V input voltage range. The output
current is over 6A, and the efficiency is over 90%.
Controller circuit design by a particular current mode
operation provides fast transient response and
eases loop stabilization.
This product has a very low standby current less
than 1µA in shutdown mode. When the
pin
voltage is less than 0.4V, FR9810 will turn off the
switching voltage regulator function and enter the
standby mode. Fault protection includes current
protect mode over current protection (OCP), voltage
protect mode under voltage lockout protection
(UVLO), and internal thermal shutdown.
This high-efficiency current mode step-down “Green
Power Converter” Fitipower offers the standard
small-outline integrated chip (SOIC) package with an
exposed pad.
Features
Internal MOSFET RDS(ON) (high side/low side):
120m/20mtyp.
Operation voltage: 4.75V to 21V
Continuous output current support: 6A
Feedback voltage: 0.805V
High efficiency (up to 90%)
Oscillation frequency (typical): 500 KHz
Sync to external clock from 300 KHz to 800 KHz
Internal compensation
OCP/UVLO protection
Over Temperature Protection (OTP) with hiccup
mode
< 1µA shutdown current
Thermal Enhanced SOP-8(Exposed Pad)
Package
RoHS Compliant
Applications
Networking equipment
OLPC, Netbooks
Distributed power systems
LCD monitors/TVs/STBs
External HDDs
Security Systems
Pin Assignments
SP Package (SOP- 8 Exposed pad )
Ordering Information
FR9810□□□
TR: Tape / Reel
G: Green
Package Type
SP: SOP-8(Exposed Pad)
Figure 1. Pin Assignment of FR9810
FR9810-Preliminary 0.1-FEB-2011
1

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