6

© 2006 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC905A

Parameter

Symbol

Condition

Min

Typ

Max

Units

Digital Input Voltage

V

IL

0.4

V

V

IH

1.25

V

SDA Output Low Level

I

0.4

V

Digital Input Current

I

DG

-0.2

0.2

μA

Hysteresis of Schmitt

Trigger Inputs

V

HYS

0.1

V

Maximum Glitch

Pulse Rejection

t

SP

50

ns

I/O Pin Capacitance

C

IN

10

pF

Clock Frequency

SCL

400

440

kHz

SCL Low Period

t

LOW

1.3

μs

SCL High Period

t

HIGH

0.6

μs

Data Hold Time

t

HD_DAT

0

μs

Data Setup Time

t

SU_DAT

100

ns

Setup Time for Repeated

START Condition

t

SU_STA

0.6

μs

Hold Time for Repeated

START Condition

t

HD_STA

0.6

μs

Setup Time for

STOP Condition

t

SU_STO

0.6

μs

Bus-Free Time Between

STOP and START

t

BUF

1.3

μs

RESET Timeout Delay

t

RD

75

100

125

ms

Power-up Delay Between

PAD, ANA, TXCO

t

DELAY

Delay Between

Each Output Activating

100

μs

Maximum Glitch

Pulse Rejection

t

SP

50

ns

Interface Start-up Time

t

EN

Bus Start-up Time After EN Pin

is Pulled High

350

μs

Notes:

(1) Applies to pin names, ON, HFPWR, CHPWR, PGOOD, VCSEL, VPSEL, EN_MOT, EN_TCXO.

(2) Applies to pin names, PWRON, RESB.

(3) For V

(4) For V

(5) Guaranteed by design.

Electrical Characteristics (Cont.)