Datasheet FAN5611, FAN5612, FAN5613, FAN5614 (Fairchild) - 10

F AN561 3. FAN5613 4. FAN5614
VIN VIN
1/F AN5612/F
I I1/I2 I3/I4 SET ISET V I4 I3 I2 I1 CONTROL VCONTROL CTRL CTRL FAN5614 RSET FAN5613 RSET
A
ON/OFF ON/OFF ENABLE V
N5613/F
ENABLE SS VSS
- Analog A - Analog
Set VCONTROL and RSET for LED current using:
N5614
Set VCONTROL and RSET for LED current using: 200 × (V – V ) CONTROL CTRL 200 × (V – V ) ILED = ------------------------------------- R I CONTROL CTRL = ------------------------------------- SET LED RSET
- PWM - 1 - PWM - 1
VCONTROL = PWM VCONTROL = PWM – Amplitude sets maximum LED current. – Amplitude sets maximum LED current. – Pulse width controls between 0 and maximum. – Pulse width controls between 0 and maximum.
- PWM - 2 - PWM - 2
Set VCONTROL and RSET for maximum LED current using: Set VCONTROL and RSET for maximum LED current using: I ∼ 200 × I LED SET I ∼ 200 × I LED SET 200 × (V – V ) I CONTROL CTRL LED = ------------------------------------- ON/OFF = PWM RSET – Amplitude has no effect on current. ON/OFF = PWM – Pulse width controls between 0 and maximum. – Amplitude has no effect on current. – Pulse width controls between 0 and maximum. © 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5611/FAN5612/FAN5613/FAN5614 Rev. 1.0.9 10