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L5970D

Note (1): Specification over the -40 to +125 Tj Temperature range are assured by design, characterization and statistical correlation.

Note (2): Guaranteed by design.

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Operating input voltage

range

*

4.4

36

V

Dropout voltage

*

0.25

0.5

V

Maximum limiting current

*

1.5

1.87

2.25

A

fs

Switching frequency

*

212

250

280

KHz

225

250

275

KHz

Duty cycle

0

100

%

DYNAMIC CHARACTERISTICS (see test circuit fig. xx note 1).

Voltage feedback

1.220

1.235

1.25

V

*

1.198

1.235

1.272

V

η

Efficiency

90

%

DC CHARACTERISTICS

Total operating quiescent

current

*3

5

mA

Quiescent current

Duty Cycle = 0; VFB = 1.5V

2.5

mA

Total stand-by quiescent

current

*

*

50

80

100

150

µA

µA

INHIBIT

INH Threshold voltage

Device ON

0.8

V

Device OFF

2.2

V

ERROR AMPLIFIER

High level output voltage

3.5

V

Low level output voltage

0.4

V

Source output current

200

300

µA

Sink output current

1

1.5

mA

Source bias current

2.5

4

µA

DC open loop gain

50

65

dB

gm

Transconductance

2.3

mS

SYNC FUNCTION

High Input Voltage

2.5

V

Low Input Voltage

0.74

V

Slave Sink Current

(2)

0.11

0.21

0.25

0.45

mA

mA

Master Output Amplitude

2.75

3

V

Output Pulse Width

0.20

0.35

µs

REFERENCE SECTION

Reference Voltage

3.234

3.3

3.366

V

*

3.2

3.3

3.399

V

Line Regulation

510

mV

Load Regulation

8

15

mV

Short Circuit Current

10

8

30

mA