L4964 datasheet(5/13 Pages) STMICROELECTRONICS

5 / 13 page

ELECTRICAL CHARACTERISTICS

(refer to the test circuits Tj =25

oC, Vi = 25V, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ. Max.

Unit

Fig.

DYNAMIC CHARACTERISTICS (pin 6 to GND unless otherwise specified)

Output Voltage Range

Vi = 36V, Io =1A

Vref

Input Voltage Range

Vo =Vref to 28V, Io =3A

∆Vo

Line Regulation

Vi = 10V to 30V, Vo =Vref,Io =2A

∆Vo

Load Regulation

Io =1A to 2A

Io = 0.5A to 3A, Vo =Vref

Vref

Internal Reference Voltage (Pin 10) Vi = 9V to 36V, Io = 2A

4.95

5.1

5.25

∆Vref

∆T

Average Temperature Coefficient

of Reference Voltage

Tj =0

°C to 125°C, Io = 2A

0.4

mV/

°C

Dropout Voltage between Pin 2

and Pin 3

Io =3A

Io =2A

1.5

3.2

2.4

Iom

Maximum Operating Load Current

VI = 9V to 36V, Vo =Vref to 28V

I2L

Current Limiting Threshold (Pin 2)

Vi = 9V to 36V, Vo =Vref to 28V

4.5

ISH

Input Average Current

Vi = 36V, Output Short-circuited

140

Efficiency

Io =3A

Vo =Vref

Vo = 12V

SVR

Supply Voltage Ripple Rejection

∆VI =2Vrms,fripple = 100Hz

Vo =Vref,Io =2A

–

Switching Frequency

kHz

∆f

∆Vi

Voltage Stability of Switching

Frequency

Vi = 9V to 36V

0.5

∆f

∆Tj

Temperature Stability of Switching

Frequency

Tj =0

°C to 125°C1

fmax

Maximum Operating Switching

Frequency

Vo =Vref,Io = 1A

120

kHz

–

Tsd

Thermal Shutdown Junction

Temperature

135

145

°C–

DC CHARACTERISTICS

I3Q

Quiescent Drain Current

Vi = 36V, V7 = 0V, S1 : B, S2 : B

V6 =0V

V6 =3V

100

–I2L

Output Leakage Current

Vi = 36V, V6 = 3 V, V7 =0V

S1 : B, S2 : A

2mA

SOFT START

I5so

Source Current

V6 = 0V, V5 = 3V

130

180

µA6b

I5si

Sink Current

V6 = 3V, V5 = 3V

140

µA6b

INHIBIT

V6L

Low Input Voltage

Vi = 9V to 36V, V7 =0V

S1 : B, S2 : B

- 0.3

0.8

V6H

High Input Voltage

5.5

–I6L

–I6H

Input Current with Input Voltage

Low Level

High Level

Vi = 9V to 36V, V7 =0V

S1 : B, S2 : B

V6 = 0.8V

V6 =2V

µA6a

ERROR AMPLIFIER

V9H

High Level Output Voltage

V10 = 4.7V, I9 = 100

µA, S1 : A,

S2 : A

3.4

V9L

Low Level Output Voltage

V10 = 5.3V, I9 = 100

µA, S1 : A,

S2 : E

0.6

I9si

Sink Output Current

V10 = 5.3V, S1 : A, S2 : B

100

150

µA6c

–I9so

Source Output Current

V10 = 4.7V, S1 : A, S2 : D

100

150

µA6c

L4964

5/13

L4964 bảng dữ liệu(PDF) 5 Page - STMicroelectronics

L4964 bảng dữ liệu(HTML) 5 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13

bảng dữ liệu tải về

Link URL