PM6675AS datasheet(9/48 Pages) STMICROELECTRONICS

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PM6675AS

Electrical characteristics

9/48

Electrical characteristics

Table 6.

Electrical characteristics

TA = - 25 °C to 85 °C , VCC = AVCC = +5 V, LIN = 1.5 V and LOUT= 0.6 V if not otherwise

specified (1).

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Supply section

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 coneected

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

lower threshold

3.85

4.0

4.1

UVLO hysteresis

On-time (SMPS)

tON

On-time duration

VSEL low,

NOSKIP low,

VVSNS = 2 V

VOSC = 300 mV

530

630

730

VOSC = 500 mV

320

380

440

OFF-TIME (SMPS)

tOFFMIN

Minimum Off-Time

300

350

Voltage reference

Voltage accuracy

4.5 V< VIN < 36 V

1.224

1.237

1.249

Load regulation

-50 µA < IVREF < 50 µA

-4

Undervoltage Lockout

Fault Threshold

800

SMPS output

VOUT

SMPS fixed output voltage

VSEL connected to AVCC, NOSKIP

tied to SGND, No Load

1.5

Feedback output voltage

accuracy

-1.5

1.5

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