FR9855 datasheet(6/16 Pages) FITIPOWER

номер детали	FR9855

подробное описание детали	18V, 5.5A Synchronous Step-Downn DC/DC Converter

PDF	16 Pages

Scroll/Zoom	100%

производитель	FITIPOWER [Fitipower Integrated Technology Inc.]

домашняя страница	http://www.fitipower.com/en_US/index.asp

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6 / 16 page

FR9855-Preliminary 0.3-JAN-2016

FR9855

85T

Electrical Characteristics

(VIN=12V, TA=25°C, unless otherwise specified.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

VIN Quiescent Current

IDDQ

H N=5V, VFB=1V

0.6

VIN Shutdown Supply Current

ISD

H N=0V

μA

Feedback Voltage

VFB

4.5V≦VIN≦18V

0.75

0.765

0.78

Feedback Input Current

IFB

VFB=1V

0.01

0.1

μA

High-Side MOSFET RDS(ON)

RDS(ON)

mΩ

Low-Side MOSFET RDS(ON)

RDS(ON)

mΩ

Current Limit

(Note 3)

ILIMIT

6.8

On Time

(Note 3)

TON

VIN=12V, VOUT=1.05V

155

Minimum Off Time

TOFF(MIN)

VFB=0.6V

250

Input Supply Voltage UVLO Threshold

VUVLO(Vth)

VIN Rising

4.3

UVLO Threshold Hysteresis

VUVLO(HYS)

0.35

Soft Start Charge Current

ISS

VSS=0V

μA

H N Input Low Voltage

H N(L

0.5

H N Input High Voltage

H N(H

1.5

REG Output Voltage

VREG

6V≦VIN≦18V, TDFN-10

4.1

REG Output Current

IREG

VREG=4.1V, TDFN-10

Power Good Threshold

(Note 3)

VPG

VFB Rising, SOP8-EP

VFB Falling, SOP8-EP

Power Good Sink Current

IPG

VPG=0.5V, SOP8-EP

Thermal Shutdown Threshold

(Note 3)

TSD

160

°C

Thermal Shutdown Hysteresis

(Note 3)

THYS

°C

Note 3：Not production tested.

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