LM2590HV-AQ datasheet(3/22 Pages) NSC | SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features

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LM2590HV-AQ Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.

No. de pieza	LM2590HV-AQ

Descripción Electrónicos	SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

Página de inicio	http://www.national.com

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All Output Voltage Versions

Electrical Characteristics

Specifications with standard type face are for T

J = 25˚C, and those with boldface type apply over full Operating Tempera-

ture Range. Unless otherwise specified, V

IN = 12V for the 3.3V, 5V, and Adjustable version. ILOAD = 500 mA

Symbol

Parameter

Conditions

LM2590HV-XXX-AQ

Units

Min

Typ

Max

(Note 5)

(Note 4)

(Note 5)

DEVICE PARAMETERS

f

O

Oscillator

Frequency

(Note 7)

127

110

150

173

173

kHz

kHz

V

SAT

Saturation Voltage

I

OUT = 1A (Note 8) (Note 9)

0.95

1.2

1.3

V

V

DC

Max Duty Cycle

(ON)

(Note 9)

100

%

Min Duty Cycle

(OFF)

(Note 10)

0

%

I

CLIM

Switch current

Limit

Peak Current, (Note 8) (Note 9)

1.3

1.2

1.9

2.8

3.0

A

A

I

L

Output Leakage

Current

Output = 0V (Note 8) (Note10) Note 11)

50

µA

Output = −1V (Note 8) (Note10) Note 11)

5

30

mA

I

Q

Operating

Quiescent Current

SD /SS Pin Open (Note 10)

510

mA

I

STBY

Standby Quiescent

Current

SD /SS pin = 0V

(Note 11)

90

200

250

µA

µA

θ

JC

Thermal

Resistance

TO220 or TO263 Package, Junction to Case

2

˚C/W

θ

JA

TO220 Package, Junction to Ambient (Note 12)

50

˚C/W

θ

JA

TO263 Package, Junction to Ambient (Note 13)

50

˚C/W

θ

JA

TO263 Package, Junction to Ambient (Note 14)

30

˚C/W

θ

JA

TO263 Package, Junction to Ambient (Note 15)

20

˚C/W

SHUTDOWN/SOFT-START CONTROL Test Circuit of Figure 1

V

SD

Shutdown

Threshold Voltage

Shutdown Mode, I

STBY < 250µA

0.6

1.3

2.0

V

V

OUT = 1% of Normal Output Voltage

1.8

V

V

SS

Soft-start Voltage

V

OUT = 20% of Nominal Output Voltage

2

V

V

OUT = 100% of Nominal Output Voltage

3

V

I

SD

Shutdown Current

V

SHUTDOWN = 0.5V

510

µA

I

SS

Soft-start Current

V

Soft-start = 2.5V

1.5

5

µA

www.national.com

3

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