BL8528 参数 Datasheet PDF下载

BL8528

ABSOLUTE MAXIMUM RATING

5.5V, 1.4MHz, 3A Synchronous Buck Converter

Supply

Input Voltage, VDD, PVDD --------------------------------------------------------------------------

0.3V

to 6V



LX Pin Switch Voltage --------------------------------------------------------------------------

0.3V

to (PVDD + 0.3V)

Other I/O Pin Voltages ----------------------------------------------------------------------------

0.3V

to (VDD + 0.3V)



LX Pin Switch Current ---------------------------------------------------------------------------------------------------- 3.5A

Power Dissipation, P

D

@ T

A

= 25C ,DFN-10L 3x3 ----------------------------------------------------------- 900mW

Package Thermal Resistance,DFN-10L3x3,

θ

JA

------------------------------------------------------------- 110C/W

Junction Temperature --------------------------------------------------------------------------------------------------- 150C



Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------- 260C

Storage Temperature Range -----------------------------------------------------------------------------



65C to 150C

ESD HBM (Human Body Mode) -----------------------------------------------------------------------------------------

2kV

RECOMMENDED OPERATING CONDITIONS

Supply Input Voltage ----------------------------------------------------------------------------------------- 3.6 to 5.5V

Output Voltage Range ----------------------------------------------------------------------------------------0.8V to Vin

Junction Temperature Range -------------------------------------------------------------------------

40C

to 125C



Ambient Temperature Range ---------------------------------------------------------------------------

40C

to 85C

ELECTRICAL CHARACTERISTICS

(VDD=5V, T

A

=25

C,

unless otherwise specified)

SYMBOL

VDD_Max

I

IN

LSON

HSON

Vref

Ifb

REGlin

REGload

Fsoc

Ilimit

SHDN_V

UVLO_rise

UVLO_fall

PARAMETER

Maximum Input Voltage

Supply Current

Low side NMOS Rdson

High side PMOS Rdson

Feedback Voltage

Feedback Leakage current

Line Regulation

Load Regulation

Switching Frequency

Peak Current Limit

Shutdown Voltage

Power on minimum Vin

voltage

Power off Vin under voltage

lock out

CONDITIONS

MIN

TYP

5.5

MAX

UNIT

V

Vfb=0.9

In Shutdown

500

100

100

0.784

-5

0.8

0.1

0.1

0.03

1.8

1.15

4

1000

1

200

220

0.816

5

0.3

0.1

2.16

1.44

Vin

A

A

m



m



V

A

%/V

%/A

MHz

MHz

A

V

V

V

Vin=4V to 5.5V

Iout=1 to 3A

R

RT

=180K

R

RT

=330K

0

0

1.44

0.86

3.2

Vin-0.7V

Increase Vin until IC work

Decrease Vin until IC shut

off

3.42

3.05

3.6

3.78

3.66

REV2.0

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