L99LD01 datasheet(50/69 Pages) STMICROELECTRONICS

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Electrical characteristics

L99LD01

50/69

DocID025319 Rev 3

(VISENSE+ -

VISENSE-)_TH

LED over current

protection threshold

V(ISENSE+) = 25 V;

VLREF =VLREF_16;

VRCCOMP =2 V

VLREF +

0.03

VLREF +

0.08

VLREF +

0.14

ISENSE_CD

Current consumption

from ISENSE+

(LED_OV)

VSENSE+ =VSENSE- =25V

VSENSE_MAX_1

Threshold at pin

ISENSE+ for overvoltage

protection (activation)

49.5

VSENSE_MAX_2

Threshold at pin

ISENSE+ for overvoltage

protection (de-

activation)

VOFFS

OTA input offset voltage

VLREF = 0 V; V(ISENSE+) = 25 V;

VRCCOMP =2 V

-10

IOFFS

OTA input offset current

V(ISENSE+) = 25 V;

VRCCOMP =2 V

µA

Transconductance gain

V(ISENSE+) = 25 V;

VRCCOMP =2 V

0.95

1.2

-ICOMP

Sourced output current

VLREF =VLREF_16;

(VISENSE+ - VISENSE-)= 0

175

µA

ICOMP

Sunk output current

VLREF =VLREF_16;

(VISENSE+ - VISENSE-)= 300 mV

175

µA

VLREF =VLREF_16;

(VISENSE+ - VISENSE-)= 1 V

100

300

VCOMP

Output voltage range

3.5

VLREF_16

Default internal voltage

reference for constant

LED current regulation

Internal LED current

VISENSE+ =25V

138

150

162

VLREF

Internal voltage

reference range for

setting output LED

current(1)

VNTC =5 V

(8 + N) /

24 *

VLREF_16

(2)

VLREF_NTC

Max internal VLREF

reduction caused by

NTC intervention

(thermal LED current

reduction)

VNTC =0 V

0.5 *

VLREF

VLREF_STEP

Internal voltage

reference step

4 / 3 *

(VLREF_16

/ 31)

ISP, ISN pin characteristics

VSP, VSN

Shunt resistor input

voltage range

-0.3

Table 24. ISENSE+, ISENSE- pin, and O.T.A. characteristics (continued)

Symbol

Parameter

Test condition

Min

Typ

Max

Units

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