TCA62735AFLG Datasheet, PDF (2/12 Pages) Marktech Corporate – Charge Pump type DC/DC Converter for White LED Driver

TENTATIVE
Block Diagram
VIN
EN
CTL0
CTL1
CTL2
C2+ C2−
C1+ C1−
TCA62735AFLG
Feed Back Circuit
Up Converting Time Change
Feed Back
ON/OFF
Control
Logic
VOUT
ILED1
ILED 2
ILED 3
ILED 4
Constant Current
Regulator
Explanation of Terminals
ISET
GND
No
Symbol
Function
1
EN
Logic input terminal. (input a chip enable signal)
EN = ”H” → Operation mode, EN = ”L” → Shutdown mode
2
CTL0
3
CTL1
Logic input terminal. (Selection of an output number)
Please refer to the truth table on page 10.
4
CTL2
5
ISET Resistance connection terminal for setting up output current.
6
VOUT Output terminal.
7
VIN Power supply terminal.
8
C1+
9
C1−
Capacitance connection terminal for charge pump.
10
C2−
11
C2+
12
GND GND terminal.
13
ILED4
14
ILED3 _{Constant Sink Current Driver terminal.}
15
ILED2 ^{ILED(mA) = 0.61V × 400 / RSET(kΩ)}
16
ILED1
This datasheet is tentative, the values and contents are subject to change without any notice. 2005-04-26 (Page 2 of 12)