ABSOLUTE MAXIMUM RATINGS

-0.3V

to

+10V

DRIVE

-0.3V

to

EOR

-0.3V

to

STDN

-0.3V

to

SENSE

-0.3V

to

Operating Temp.

-40°C to

+85°C

Storage Temp.

-55°C to

+125°C

Power Dissipation

450mW

ZXSC400

ISSUE 1 - JANUARY 2003

2

Symbol

Parameter

Conditions

Limits

Units

Min

Typ

Max

Supply parameters

1.8

8

V

Iq

1

Quiescent Current

220

A

Shutdown Current

4.5

A

Eff

1

Efficiency

80

%

Reference tolerance

-3.0

3.0

%

Reference Temp Co

0.005

%/ C

Discharge pulse width

1.7

s

Operating Frequency

200

kHz

Input parameters

Sense voltage

22

28

34

mV

Sense input current

-1

-7

-15

A

Feedback voltage

291

300

309

mV

2

Feedback input current

-1.2

-4.5

A

Shutdown high voltage

1.5

V

CC

V

Shutdown low voltage

0

0.55

V

Line voltage regulation

0.5

%/V

Output parameters

3

Output current

Vin > 2V, Vout = 10.5V

50

mA

Transistor drive current

Vdrive = 0.7V

2

3.5

5

mA

Transistor voltage drive

0

V

V

Mosfet gate drive cpbty

300

pF

dILD

4

Load current regulation

0.1

mA/V

ELECTRICAL CHARACTERISTICS

Note

1

Excluding gate/base drive current.

2

3

System not device spec, including recommended transistors. 10.5V represents 3 white LEDs.

4