TCA62735AFLG(O,EBS) Toshiba, TCA62735AFLG(O,EBS) Datasheet

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... 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. ...

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Pin Assignment (top view) Explanation of Terminals No Symbol Logic input terminal. (input a chip enable signal ”H” → Operation mode ”L” → Shutdown mode 2 CTL0 Logic input terminal. (Selection of an output ...

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Block Diagram VIN EN CTL0 CTL1 CTL2 C2+ C2– C1+ C1– Charge pump Circuit Feed Back Circuit Up Converting Time Change Control Logic Constant Current Regulator GND ISET 3/18 TCA62735AFLG VOUT Feed Back ILED1 ILED2 ILED3 ILED4 2007-06-21 ...

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I/O Equivalent Circuits 1. ILED1~4 3. EN, CTL0, CTL1, CTL2 VIN EN,CTL0,CTL1,CTL2 5. C1+, C2+ C1+, C2+ 7. C2- C2- 2. ISET ILED1~4 4. VOUT VIN 6. C1- 4/18 TCA62735AFLG VIN ISET VOUT C1- 2007-06-21 ...

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Absolute Maximum Ratings (T Characteristics ...

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Test Circuits Test Circuit1: Output Current Ability, TOTAL R C =1.0µF 1 C1- C2- C =1.0µF 2 C2+ GND ( Test Circuit2: Consumption Current, Stand By Consumption Current C =1.0µF 1 C1- C2- C =1.0µF 2 C2+ ...

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Test Circuit3: Logic Input Voltage, Logic Input Current C =1.0µF 1 C1- C2- C =1.0µF 2 C2+ Test Circuit4: Clock Frequency, 1X mode to 1.5X mode transition voltage C =1.0µF 1 C1- C2- C =1.0µF 2 C2+ F GND R ...

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Test Circuit5: Constant Current Drive Setting, ISET Terminal Output Voltage, Constant Current Accuracy Test Circuit5: Constant Sink Current Supply Voltage Regulation, Output leakage current C =1.0µF 1 C1- C2- C =1.0µF 2 C2+ R =47kΩ, 12kΩ, 8.2kΩ SET V C ...

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Reference data *This data is provided for reference only. Thorough evaluation and testing should be implemented when designing your application's mass production design. Efficiency vs. IOUT 100 LED V =3. ...

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IOUT Current vs. VIN 160 4LEDs at 30mA 140 4LEDs at 20mA 4LEDs at 5mA 120 100 2.8 3.0 3.2 3.4 VIN (V) 1x Mode Transition V oltage vs. ILED Current 4.1 T =25°C a ...

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Method of setting I LED The current of the terminal set by resistance R LED I can be set according to the next expression. LED 400 × 0.61[V] I [mA] = LED R [kΩ] SET ...

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Method of Current Dimming control 1) Input PWM signal to SHDN terminal I can be set according to the next expression. LED 0.61[V] × 400 × ON Duty[%] I [mA] = LED f will recommend 100Hz. PWM Ch1 : V ...

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Input analog voltage to ISET terminal 1. Precondition • Please set the range of the analog voltage input 0.61V. 2. The maximum current is defined as αmA. α[mA] = 0.61[V] × minimum current is ...

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Input Logic signal User can adjust I with Logic signal input as indicated in recommended circuit. LED The Resistor connected the ON-State Nch MOS Drain and R I can be set according to the next expression. LED 400 × ...

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Selection of an output number by CTL0, CTL1, and CTL2 Terminal Truth Table Input CTL2 CTL1 CTL0 ...

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Package Dimensions VQFN16-P-0404-0.65 0.25MIN + 0.15 0.60 - 0.10 Weight: 0.016 g (Typ.) 4.00Typ. 3.75Typ. + 0.07 0.28 - 0.05 0.65Typ. 16/18 TCA62735AFLG Unit : mm 0.9MAX 2007-06-21 ...

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... Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. 5. Test Circuits Components in the test circuits are used only to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment ...

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TCA62735AFLG 2007-06-21 ...