LA5744 datasheet(2/5 Pages) SANYO

Nome de Peças	LA5744

Descrição Electrónicos	Monolithic Linear IC Separately-Excited Step-Down Switching Regulator (Variable Type)

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Fabricante Electrônico	SANYO [Sanyo Semicon Device]

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LA5744

No.A0717-2/5

Electrical Characteristics at Ta

= 25°C, VO = 5V

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

Reference voltage

VOS

VIN = 15V, IO = 1.0A

1.20

1.23

1.26

V

Efficiency

η

VIN = 15V, IO = 1.0A

83

%

Switching frequency

f

VIN = 15V, IO = 1.0A

240

300

360

kHz

Line regulation

∆VOLINE

VIN = 8 to 20V, IO = 1.0A

40

100

mV

Load regulation

∆VOLOAD

VIN = 20V, IO = 0.5 to 1.5A

10

30

mV

Output voltage temperature

coefficient

∆VO/∆Ta

Designed target value. *

±0.5

mV/

°C

Ripple attenuation factor

RREJ

f = 100 to 120Hz

45

dB

Current limiter operating voltage

IS

VIN = 15V

3.1

A

Thermal shutdown operating

temperature

TSD

Designed target value. *

165

°C

Thermal shutdown Hysteresis

width

∆TSD

Designed target value. *

15

°C

* Design target value : No measurement made.

Package Dimensions

unit : mm (typ)

3343

Pin Assignment

(1) VIN (2) SWOUT (3) GND (4) VOS (5) SS

140

120

100

80

60

40

20

0

-20

-30

0

2.0

4.0

6.0

8.0

MSG07021

160

10.0

7.5

5.6

3.3

1.75

Ambient temperature, Ta --

°C

Pd max -- Ta

100

×100×1.5mm3

50

×50×1.5mm3

30

×30×1.5mm3

No heat sink

Infinite heat sink

θjc=5°C

Al heat

sink

mounting

torque

39N

⋅cm

silicone

grease

applied

SANYO : 220-5HK

0.9

1.7

(1.6)

0.8

3.6

10.0

10.4MAX

1.3

2.7

4.5

8.4

15

2

0.4

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