ECU-S1J105MEB datasheet(6/20 Pages) TI1

Part #	ECU-S1J105MEB

Description	CURRENT-MODE-PWM CONTROLLER

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Manufacturer	TI1 [Texas Instruments]

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TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

6

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating junction temperature range, VCC = 15 V,

RT = 3.9 kΩ, CT = 1 nF (unless otherwise noted) (continued)

current sense

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IIB(IS)

Input bias current, IS

–4

–10

µA

td

Delay time to output

70

ns

VIT(CS)

Current sense threshold

0.9

1.0

1.1

V

integrating capacitor current

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IO(cap)

Capacitor integrating current at VC with LED off

II(LED) = 0

–5

–10

µA

IL

Photodiode light current at VC, I(VC)(on) – I(VC)(off)

II(LED) = 10 mA,

TA = 25°C

5

8

µA

PWM (pulse-width modulation)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Maximum duty cycle

CL = 1 nF,

CREG = 0.1 µF

97%

Minimum duty cycle

CL = 1 nF,

CREG = 0.1 µF

0

UVLO (under voltage lockout)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT(H)

Start-up threshold voltage

15

16

17

V

VIT(L)

Minimum operating voltage after start-up

9

10

11

V

supply current

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ICC(off)

Start-up current

VCC < 15 V

55

100

µA

ICC(on)

Operating supply current

VCC > 11 V

8

13

16

mA

output section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

High level output voltage

IO = –20 mA

11

11.7

V

VOH

High-level output voltage

IO = –200 mA

10.5

11.2

V

VOL

Low level output voltage

IO = 20 mA

0.78

0.9

V

VOL

Low-level output voltage

IO = 200 mA

1.38

2

V

tr

Rise time

TJ = 25°C,

CL = 1 nF

20

35

ns

tf

Fall time

TJ = 25°C,

CL = 1 nF

20

35

ns

regulator

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VO(REG)

Regulator output Voltage

VCC = 17 V

12

12.5

13.5

V

IOS(REG) Regulator short-circuit output current

VO = 0 V

–9

–12.5

–15.0

mA

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