PM6670AS datasheet(9/54 Pages) STMICROELECTRONICS

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PM6670AS

Electrical characteristics

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Electrical characteristics

Table 6.

Electrical characteristics

TA = -25 °C to 85 °C , VCC = AVCC = +5 V and LDOIN connected to VDDQ output if not

otherwise specified (1)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Supply section

IIN

Operating current

S3, S5, MODE and DDRSEL

connected to AVCC, No Load on

VTT and VTTREF Outputs.

VCC connected to AVCC

0.8

ISTR

Operating current in STR

S5, MODE and DDRSEL connected

to AVCC, S3 tied to SGND, No Load

on VTTREF.

VCC connected to AVCC

0.6

ISH

Operating current in

shutdown

S3 and S5 tied to SGND.

Discharge Mode active.

VCC connected to AVCC

110

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

MODE and

DDRSEL

high,

VVSNS = 2 V

VOSC = 300 mV

650

750

850

VOSC = 500 mV

390

450

510

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< I

VREF < 50 µA-4

Undervoltage lockout fault

threshold

800

VDDQ output

VVDDQ

DDR3 VDDQ output voltage

MODE connected to AVCC,

DDRSEL tied to SGND, No Load

1.5

DDR2 VDDQ output voltage

MODE and DDRSEL connected to

AVCC, No Load

1.8

Feedback accuracy

MODE and DDRSEL connected to

AVCC, no load

-1.5

1.5

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