LM2576SX-ADJ Ver la hoja de datos (PDF) - Unspecified

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LM2576SX-ADJ

SIMPLE SWITCHER® 3A Step-Down Voltage Regulator

Unspecified 

LM2576/LM2576HV

LM2576-ADJ, LM2576HV-ADJ

Electrical Characteristics

Specifications with standard type face are for TJ=25℃, and those with boldface type apply over full Operating Temperature Range.

LM2576-ADJ

Symbol

Parameter

Conditions

LM2576HV-ADJ

Units(limits)

Typ

Limit(Note2)

SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2

VOUT

VOUT

VOUT

η

Feedback Voltage

Feedback Voltage

LM2576

Feedback Voltage

LM2576HV

Efficiency

VIN=12V, ILOAD=0.5A

VOUT=5V

Circuit of Figure 2

0.5A≤ILOAD≤3A

8V≤VIN≤40V

VOUT=5V,Circuit of Figure 2

0.5A≤ILOAD≤3A,

8V≤VIN≤60V

VOUT=5V,Circuit of Figure 2

VIN=12V, ILOAD=3A, VOUT=5V

1.230

1.230

1.230

77

1.217

1.243

1.193/1.180

1.267/1.280

1.193/1.180

1.273/1.286

V

V(Min)

V(Max)

V

V(Min)

V(Max)

V

V(Min)

V(Max)

%

All Output Voltage Versions

Electrical Characteristics

Specifications with standard type face are for TJ=25℃, and those with boldface type apply over full Operating Temperature Range. Unless otherwise

specified, VIN=12V for the 3.3V, 5V, and Adjustable version, VIN=25V for the 12V version, and VIN=30V for the 15V version. ILOAD=500mA

LM2576-XX

Symbol

Parameter

Conditions

LM2576HV-XX

Units(limits)

Typ

Limit(Note2)

DEVICE PARAMETERS

Ib

Feedback Bias Current VOUT=5V(Adjustable Version Only)

fO

Oscillator Frequency

(Note 11)

50

100/500

52

47/42

58/63

nA

kHz

kHz

(Min)

kHz

(Max)

VSAT

Saturation Voltage

IOUT=3A (Note 4)

1.4

1.8/2.0

V

V(Max)

DC

Max Duty Cycle (ON) (Note 5)

ICL

Current Limit

(Note 4,11)

98

93

5.8

4.2/3.5

6.9/7.5

%

%(Min)

A

A(Min)

A(Max)

IL

Output

Leakage (Note 6,7); Output = 0V

Current

Output=-1V

2

7.5

Output=-1V

30

IQ

Quiescent Current

(Note 6)

5

10

ISTBY

Standby Quiescent

Current

/OFF Pin =5V(OFF)

50

200

JA

Thermal Resistance

T Package, Junction to Ambient (Note 8)

65

JA

T Package, Junction to Ambient (Note 9)

45

JC

T Package, Junction to Case

2

JA

S Package, Junction to Ambient (Note 10)

50

mA(Max)

mA

mA(Max)

mA

mA(Max)

μA

μA(Max)

℃/W

/OFF CONTROL Test Circuit Figure2

VIH

/OFF Pin

VOUT=30V

1.4

2.2/2.4

V(Min)

VIL

Logic Input Level

VOUT=Nominal Output Voltage

1.2

1.0/0.8

V(Max)

IIH

/OFF Pin Input

Current

IIL

/OFF Pin=5V (OFF)

/OFF Pin=0V (ON)

12

30

0

10

μA

μA(Max)

μA

μA(Max)

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