TCA62735AFLG Datasheet, PDF (1/12 Pages) Marktech Corporate – Charge Pump type DC/DC Converter for White LED Driver

TCA62735AFLG
TOSHIBA CMOS INTEGRATED CIRCIUTS SILICON MONOLITHIC
TCA62735AFLG
Charge Pump type DC/DC Converter for White LED Driver
The TCA62735AFLG is a charge pump type DC/DC Converter
specially designed for constant current driving of White LED.
This IC can outputs LED current 120mA or more to 2.8-4.2V input.
This IC observes the power-supply voltage and the output voltage,
and does an automatic change to the best of step up mode 1, 1.5 or
2 times. It is possible to prolong the battery longevity to its
maximum.
This IC is especially for driving back light white LEDs in LCD of PDA,
Cellular Phone, or Handy Terminal Equipment.
Characteristics
• Fabricating with CMOS Process
• Package : QFN16 (4mm × 4mm × 0.8mm)
• Input Voltage : 2.8V (Min)
• Output Voltage : 4.2V (Min)
• Switching Frequency : 1MHz(Typ.)
• Output Drive Current Capability : Greater than 120mA
• 4 Channels Built in Constant Sink Current Drivers
• Sink Current Adjustment by External Resistance
• Soft Start Function
• Output Open Detection Function
• Integrated protection circuit TSD (Thermal Shut Down)
Weight: 0.016 g (Typ.)
Pin Assignment (top view)
Application Diagram
EN
CTL0
CTL1
CTL2
Company Headquarters
3 Northway Lane North
Latham, New York 12110
Toll Free: 800.984.5337
Fax: [phone]
GND
C2+
C2−
C1−
C₁
1.0µF
V_IN=2.8~4.2V
C_IN
2.2µF
C1+
C1–
EN
CTL0
CTL1
CTL2
VIN
GND
C2+
C₂
C2–
1.0µF
VOUT
ILED1
ILED2
ILED3
ILED4
30mA
30mA
30mA
30mA
ISET
R_SET
8kΩ
C_OUT
1.0µF
Web: www.marktechopto.com | Email: [e-mail]
California Sales Office:
950 South Coast Drive, Suite 225
Costa Mesa, California 92626
Toll Free: 800.984.5337
Fax: [phone]