BL8519 datasheet(3/7 Pages) BELLING

Part #	BL8519

Description	Built-in 2A Power MOSFET Step-down DC-DC Converter

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Manufacturer	BELLING [SHANGHAI BELLING CO., LTD.]

Direct Link	http://www.belling.com.cn

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BL8519

ABSOLUTE MAXIMUM RATING

Supply Voltage

23V

SW Pin Voltage

25V

CE Pin Voltage

–0.3V to Vin+0.3V

FB Pin Voltage

–0.3V to 6V

Operating Ambient Temperature Range

–40°C to 85°C

Storage Temperature Range

–65°C to 150°C

Lead Temperature (Soldering, 10 sec)

260°C

Thermal resistance: ΘJA

150°C/W

ELECTRICAL CHARACTERISTICS

(Test condition: Ta=25ºC, VIN=12V,unless otherwise noted.)

Symbol

Item

Conditions

Min.

Typ.

Max.

Unit

VUVLO

Under Voltage Lockout

3.35

3.6

V

VFB

Feedback Voltage

1.225

1.25

1.275

V

IFB

FB Pin Bias Current

VFB=1.25V

150

600

nA

IQ

Supply Current

VFB=1.3V, VCE=VIN

2

mA

Quiescent Current in

Shutdown

VCE=0V

2

5

uA

VFB/

V

△

Reference Line

Regulation

VIN=5V to 20V

0.08

%/V

△VFB/△T

Feedback Voltage

Temperature

Coefficient

-40℃ ≤ Topt≤ 85℃

±100

ppm/℃

FOSC_MAX

Oscillator Frequency

VFB=1.1V

500

KHz

FOSCTH

Frequency Shift

Threshold on FB Pin

FSW=200K

0.44

V

DMAX

Max Duty Cycle

97

%

ILIMIT

Switch Current Limit

2.5

A

Rds_on

Static P-Channel

MOSFET On State

Resistance

90*

m

Ω

ISW

Switch Leakage

Current

1

uA

ICEH

CE “H” Input Current

VCE =3V

6.7

15

uA

ICEL

CE “L” Input Current

VCE = 0V

0.03

0.1

uA

VCEH

CE “H” Input Voltage

VIN = 12V

1.8

V

VCEL

CE “L” Input Voltage

VIN = 12V

0.4

V

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BL8519 Datasheet(PDF) 3 Page - SHANGHAI BELLING CO., LTD.

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