FAN5611_06 Datasheet, PDF (10/14 Pages) Fairchild Semiconductor – Low-Dropout LED Drivers for White, Blue, or any Color LED

3. FAN5613
VIN
4. FAN5614
VIN
ISET
V_CONTROL
I4
I3
I2
I1
CTRL
RSET
FAN5613
ON/OFF
ENABLE
VSS
ISET
V_CONTROL
RSET
ENABLE
CTRL
ON/OFF
I1/I2
I3/I4
FAN5614
VSS
- Analog
Set V_CONTROL and R_SET for LED current using:
I_LED = ²----⁰---⁰-----^×-----⁽--^V----^C----^O---_R-^N----_ST---^RE----_TO----^L----–----^V-----^C---^T----^R---^L---⁾-
- PWM - 1
V_CONTROL = PWM
– Amplitude sets maximum LED current.
– Pulse width controls between 0 and maximum.
- PWM - 2
Set V_CONTROL and R_SET for maximum LED current using:
I_LED ∼ 200 × I_SET
ON/OFF = PWM
– Amplitude has no effect on current.
– Pulse width controls between 0 and maximum.
- Analog
Set V_CONTROL and R_SET for LED current using:
I_LED = ²----⁰---⁰-----^×-----⁽--^V----^C----^O---_R-^N----_ST---^RE----_TO----^L----–----^V-----^C---^T----^R---^L---⁾-
- PWM - 1
V_CONTROL = PWM
– Amplitude sets maximum LED current.
– Pulse width controls between 0 and maximum.
- PWM - 2
Set V_CONTROL and R_SET for maximum LED current using:
I_LED ∼ 200 × I_SET
I_LED = ²----⁰---⁰-----^×-----⁽--^V----^C----^O---_R-^N----_ST---^RE----_TO----^L----–----^V-----^C---^T----^R---^L---⁾-
ON/OFF = PWM
– Amplitude has no effect on current.
– Pulse width controls between 0 and maximum.
© 2003 Fairchild Semiconductor Corporation
FAN5611/FAN5612/FAN5613/FAN5614 Rev. 1.0.9
10
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