PM6675 datasheet(9/47 Pages) STMICROELECTRONICS

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PM6675

Electrical characteristics

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Electrical characteristics

VIN = 12V; TA = 0°C to 85°C, VCC = AVCC = +5V, LIN = 1.5V and LOUT = 0.9V

(if not otherwise specified)

Table 4. Electrical characteristics

Symbol

Parameter

Test condition

Values

Unit

Min

Typ

Max

Supply section

VIN

Input voltage range

4.5

VAVCC

IC supply voltage

4.5

5.5

VVCC

IC supply voltage

4.5

5.5

IIN

Operating current

(Switching + LDO)

SWEN, LEN, VSEL and

NOSKIP connected to AVCC,

No load on LOUT output.

ISW

Operating current (Switching)

SWEN, VSEL and NOSKIP

connected to AVCC, LEN

connected to SGND.

ISHDN

Shutdown operating current

SWEN and LEN tied to SGND.

µA

UVLO

AVCC under voltage lockout

upper threshold

4.1

4.25

4.4

AVCC under voltage lockout

upper threshold

3.9

4.0

4.1

UVLO hysteresis

ON-time (SMPS)

tON

On-time duration

VSELhigh,

and

NOSKIP low,

VVSNS = 2V

VOSC=300mV

550

630

710

VOSC=500mV

330

380

430

OFF-time (SMPS)

tOFFMIN

Minimum OFF-time

300

350

Voltage reference

Voltage accuracy

4.5V< VIN < 25V

1.224

1.237

1.249

Load regulation

-50µA< IVREF < 50µA

-4

Undervoltage Lockout Fault

Threshold

800

SMPS output

VOUT

SMPS fixed output voltage (1)

VSEL connected to AVCC,

NOSKIP tied to SGND, No Load

1.5

Output voltage accuracy (1)

-1.5

1.5

1. Guaranteed by design. Not production tested

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