SC644

5

Electrical Characteristics (continued)

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Digital I/O Electrical Specifications (SPIF)

V

IH

V

.6

V

V

IL

V

0.4

V

Input High Current

I

IH

V

-

+

µA

Input Low Current

I

IL

V

-

+

µA

SemPulse Electrical Specifications (SPIF)

t

SU



ms

t

HI

0.75

250

µs

t

LO

0.75

250

µs

t

HOLDA

SPIF is held high

500

5000

µs

t

HOLDD

SPIF is held high

500

µs

t

BR

SPIF is held high

0

ms

t

SD

SPIF is pulled low

0

ms

Fault Protection

Output Short Circuit Current Limit

I

OUT(SC)

OUT pin shorted to GND

300

mA

Over-Temperature

T

OTP

Rising threshold

65

°C

T

HYS

Hysteresis

30

°C

Charge Pump

Over-Voltage Protection

V

OVP

OUT pin open circuit, V

5.7

6.0

V

Under Voltage Lockout

V

UVLO-OFF

Increasing V

IN

2.7

V

V

UVLO-HYS

Hysteresis

800

mV

Notes:

() Capacitors are MLCC of X5R type. Production tested with higher value capacitors than the application requires.

(2) SPIF is high for more than 0ms

(3) Subscript for all backlights (BLn), n = , 2, 3, 4, 5, and 6. Subscripting for all LDOs (LDOn), n = , 2, 3, 4.

(4) Current matching is defined as ± [I

(5) Test voltage is V

(6) Subscript m = , 3, and 4 and applies only to LDO, LDO3, and LDO4.

(7) Dropoutisdefinedas(V

of .8V.

(8) X5R or better “temperature stable” MLCC capacitor.

(9) The source driver used to provide the SemPulse output must meet these limits.

(0) The SemPulse start-up time is the minimum time that the SPIF pin must be held high to enable the part before commencing

communication.

() The SemPulse shutdown time is the minimum time that the SPIF pin must be pulled low to shut the part down.