© 2003 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN5611/FAN5612/FAN5613/FAN5614 Rev. 1.0.9

10

3. FAN5613

- Analog

- PWM - 1

– Amplitude sets maximum LED current.

– Pulse width controls between 0 and maximum.

- PWM - 2

ON/OFF = PWM

– Amplitude has no effect on current.

– Pulse width controls between 0 and maximum.

4. FAN5614

- Analog

- PWM - 1

– Amplitude sets maximum LED current.

– Pulse width controls between 0 and maximum.

- PWM - 2

ON/OFF = PWM

– Amplitude has no effect on current.

– Pulse width controls between 0 and maximum.

ISET

RSET

I1

I2

I3

I4

VIN

VSS

FAN5613

CTRL

V

CONTROL

ENABLE

ON/OFF

I

LED

200

V

CONTROL

V

CTRL

–

()

×

R

SET

-------------------------------------------------------------------------

=

I

LED

200

I

SET

×

∼

RSET

I3/I4

I1/I2

VIN

VSS

FAN5614

CTRL

V

CONTROL

ISET

ON/OFF

ENABLE

I

LED

200

V

CONTROL

V

CTRL

–

()

×

R

SET

-------------------------------------------------------------------------

=

I

LED

200

I

SET

×

∼

I

LED

200

V

CONTROL

V

CTRL

–

()

×

R

SET

-------------------------------------------------------------------------

=