SMB214A/B/C

Summit Microelectronics, Inc

2128 2.2 9/17/2010

11

AC OPERATING CHARACTERISTICS

(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.) Note 4

Symbol

Description

Conditions

Min

Typ

Max

Unit

Programmable power-On

sequence timeout period.

Programmable

power-on

sequence

position to sequence position delay.

1.5

ms

12.5

25

50

Programmable power-off

sequence timeout period.

Programmable power-off sequence

position to sequence position delay.

1.5

ms

12.5

25

50

Programmable sequence

termination period

Time between active enable in which

corresponding outputs must exceed there

programmed under voltage threshold. If

exceeded, a force shutdown will be

initiated.

OFF

ms

50

100

200

Programmable glitch filter

Period for which fault must persist before

fault triggered actions are taken.

0

μs

8

Reset timeout period

Applicable when HEALTHY pin is used as

an nRESET output pin. Programmable

time following assertion of last supply

before nRESET pin is released high.

25

ms

50

100

200

Programmable slew rate

reference

Adjustable slew rate factor proportional to

output slew rate.

400

V/s

200

100

67

50

33

25

20

Channels 0 to 2

LS Driver output rise time

4.2

ns

LS Driver output fall time

4.2

ns

HS Driver output rise time

2.9

ns

HS Driver output fall time

2.9

ns

Driver non-overlap delay

High to low transition on HSDRV

30

ns

Low to high transition on buck HSDRV

60

Note 5: Timing specifications are 20% shorter for the SMB214C device and 60% longer for SMB214A.