Rev 1.3

vicorpower.com

Page 19 of 30

12/2015

800 927.9474

PI34xx-00

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Timing

Switching Frequency

750

kHz

Fault Restart Delay

30

ms

Sync In (SYNCI)

Synchronization Frequency Range

50

110

%

SYNCI Threshold

2.5

V

Sync Out (SYNCO)

SYNCO High

Source 1mA

4.5

V

SYNCO Low

Sink 1mA

0.5

V

SYNCO Rise Time

20pF load

10

ns

SYNCO Fall Time

20pF load

10

ns

Soft Start And Tracking

TRK Active Input Range

Internal reference tracking range.

0

1.2

V

TRK Max Output Voltage

1.2

V

TRK Disable Threshold

20

40

60

mV

Charge Current (Soft–Start)

-70

-50

-30

µA

Discharge Current (Fault)

6.8

mA

Soft-Start Time

2.2

ms

Enable

High Threshold

0.9

1

1.1

V

Low Threshold

0.7

0.8

0.9

V

Threshold Hysteresis

100

200

300

mV

Enable Pull-Up Voltage

With positive logic EN polarity

2

V

(floating, unfaulted)

Enable Pull-Down Voltage

With negative logic EN polarity

0

V

(floating, faulted)

Source Current

With positive logic EN polarity

-50

uA

Sink Current

With negative logic EN polarity

50

uA

[1]

All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI34xx-00 evaluation board with 3 x 4”

dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.

[2]

Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.

[3]

Output current capability may be limited and other performance may vary from noted electrical characteristics when switching frequency or

[4]

Refer to Output Ripple plots.

[5]

Refer to Load Current vs. Ambient Temperature curves.

[6]

Refer to Switching Frequency vs. Load current curves.

[7]

Minimum 5 V between Vin-Vout must be maintained or a minimum load of 1 mA required.