PM6675STR datasheet(9/53 Pages) STMICROELECTRONICS

部件名	PM6675STR

功能描述	High efficiency step-down controller with embedded 2 A LDO regulator

PDF	53 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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9 / 53 page

PM6675S

Electrical characteristics

9/53

Electrical characteristics

Table 6.

Electrical characteristics

TA = 0 °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

Values

Unit

Min

Typ

Max

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

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

3.85

4.0

4.1

UVLO hysteresis

ON-time (SMPS)

tON

On-time duration

VSEL low,

NOSKIP low,

VVSNS = 2V

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 < 25 V

1.224

1.237

1.249

Load regulation

-50 µA< IVREF < 50 µA

-4

Undervoltage Lockout Fault

Threshold

800

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