TCA62735AFLG(O,EBS) Toshiba, TCA62735AFLG(O,EBS) Datasheet - Page 15

• Manufacturer Part Number: TCA62735AFLG(O,EBS)
• Description: IC WHITE LED DRIVER 16VQFN
• Manufacturer: Toshiba
• Type: Backlight, White LEDr

Specifications of TCA62735AFLG(O,EBS)

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost), Switched Capacitor (Charge Pump)
• Number Of Outputs: *
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.8 V ~ 4.2 V
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 120mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Other names: TCA62735AFLG(O,EB); TCA62735AFLG(OEB)TR; TCA62735AFLG(OEB)TR

Selection of an output number by CTL0, CTL1, and CTL2 Terminal
Attention in use
*Soft Start Function
*Inrush Current of Input Current
*Thermal Shut Down Function
*The Selection of Capacitor for Charge Pump, Input and Output
This device is integrated Soft start function. When the power supply is ON or output is started to operate, the
transition time is controlled in order to decrease the rush current.
The inrush current flows when start-up and mode switching.
This device has Thermal Shutdown Function to protect from thermal damage when the output is shorted.
The temperature to operate this function is set around from 140 to 160°C. (This is not guaranteed Value.)
The input capacitor is effective to decrease the impedance of power supply and also input current is averaged.
The input capacitor should be selected by impedance of power supply, it is better to choose with lower ESR
(Equivalent Series Resistor). (i.e. ceramic capacitor etc.) Regarding to the capacitance values, it is recommended to
choose in the range from 0.8 µF to 10 µF, however larger than 2.2 µF should be better.
The output capacitor is effective to decrease the ripple noise of the output line. Also, it is better to choose the
capacitor.) Regarding to the capacitance values, it is recommended to
choose in the range from 0.8 µF to 4.7 µF, however larger than 1.0 µF should be better.
The capacitor for charge pump operation is also selected the capacitor with low ESR. .) Regarding to the
capacitance values, it is recommended to choose in the range from 0.8 µF to 2.2 µF, however larger than 1.0 µF
should be better.
Truth Table
(Reference data: The output voltage is time 200µs of made from 0 to 4.0V at the V
(Reference data: Inrush current at CE1/CE2="L" to “H” is 500mA.)
CTL2
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
CTL1
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
Input
CTL0
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
EN
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
15/18
ILED4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ILED3
Please do not set it.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
Output
IN
ILED2
=2.8V time.)
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
TCA62735AFLG
ILED1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
2007-06-21