cat3604v Catalyst Semiconductor, cat3604v Datasheet
cat3604v
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cat3604v Summary of contents
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... C1+ © Catalyst Semiconductor, Inc. Characteristics subject to change without notice DESCRIPTION The CAT3604V is a high efficiency Quad-Mode fractional charge pump that can drive up to four LEDs with input supply voltages as low as 2.5V. An external RSET resistor is used to control the LED channel brightness while channel diagnostics include ...
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... CAT3604V ABSOLUTE MAXIMUM RATINGS Parameter VIN, LEDx, C1±, C2± voltage VOUT voltage EN voltage Storage Temperature Range Junction Temperature Range Lead Temperature RECOMMENDED OPERATING CONDITIONS Parameter VIN Ambient Temperature Range I per LED pin LED Total Output Current LED Forward Voltage Range Typical application circuit with external components is shown on page 1. ...
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... T LED on settling time LED-ON T LED off settling time LED-OFF Figure 1. CAT3604V Timing Characteristics LED Current Setting The nominal LED current is set by the external resistor connected between the RSET pin and ground. Table 1 lists standard resistor values for several LED current settings. ...
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... CAT3604V TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 80mA (4 LEDs at 20mA OUT Efficiency vs. Input Voltage 100 1.33x 4.5 4.0 3.5 INPUT VOLTAGE [V] Quiescent Current vs. Input Voltage 4 3.3V F 3.0 2.0 1.0 LEDs Off 0.0 5.5 5.0 4.5 4.0 3.5 INPUT VOLTAGE [V] LED Current Change vs. Input Voltage 3. -10 2 ...
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... Characteristics subject to change without notice = 1μ OUT 120 1x Mode 300 400 Line Transient Response (3.6V to 4.9V) 100 5 CAT3604V = 25°C unless otherwise specified. AMB Output Resistance vs. Input Voltage 1.33x 1. 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE [V] LED Current vs. LED Pin Voltage ...
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... CAT3604V TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 80mA (4 LEDs at 20mA OUT Operating Waveforms in 1x Mode Switching Waveforms in 1.5x Mode Doc. No. MD-5029, Rev 1μ 25°C unless otherwise specified. IN OUT 1 2 AMB Switching Waveforms in 1.33x Mode Switching Waveforms in 2x Mode 6 © Catalyst Semiconductor, Inc. ...
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... Cold Power Up in 1.5x Mode Cold Power Up (1x Mode) © Catalyst Semiconductor, Inc. Characteristics subject to change without notice = 1μ 25°C unless otherwise specified. IN OUT 1 2 AMB Cold Power Up in 1.33x Mode Cold Power Mode Power Down (1x Mode) 7 CAT3604V Doc. No. MD-5029 Rev. B ...
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... CAT3604V PIN DESCRIPTION Pin # Name Function 1 EN Device enable (active high Not connected inside the package Not connected inside the package Not connected inside the package. 5 RSET Connect resistor RSET to set the LED current. 6 VOUT Charge pump output connected to the LED anodes. ...
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... EN is held low for 1.5ms or more. As soon as the EN input goes low, all LED channels are instantly disabled, where the LED current is set to zero. As long as the CAT3604V is not in shutdown mode, the LEDs turn on as soon as the EN goes high. 9 CAT3604V ...
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... VOUT (see Figure 3). 1µF 1µF C1+ C1- C2+ C2 VIN VOUT C IN 1µF CAT3604V LED1 ON OFF EN LED2 LED3 RSET LED4 GND R SET Figure 3. Application with 3 LEDs Protection Mode If an LED is disconnected, the device senses that, run the diagnostics, then ignores that channel and goes back to the most effective mode ...
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... PWM FREQUENCY [kHz] Figure 5. Output current vs. PWM frequency For best performance, the duty cycle off-time T should meet the following timing limits: for slow frequency ≤ 600Hz, T for fast frequency ≥ 1kHz CAT3604V 10 100 OFF ≥ 800µs OFF ≤ 400µs OFF Doc ...
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... CAT3604V TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 80mA (4 LEDs at 20mA OUT 10kHz PWM waveform (1x mode) 300Hz PWM waveform (1x mode) Dimming Linearity, PWM at 500Hz 100 80 1x mode 60 VIN = 4V 40 1.33x mode VIN = 3. DUTY CYCLE [%] Doc. No. MD-5029, Rev 1μF, T ...
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... Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC satndard MO-220. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice SIDE VIEW MAX 0.80 0.05 L 0.35 4.10 2.90 4.10 2. CAT3604V DETAIL A PIN BOTTOM VIEW e b DETAIL A A3 FRONT VIEW Doc. No. MD-5029 Rev. B ...
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... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) The device used in the above example is a CAT3604VHV4-GT2 (TQFN, Tape & Reel, 2,000/Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. Doc. No. MD-5029, Rev. B ...
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... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...