cat4101 ON Semiconductor, cat4101 Datasheet
cat4101
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cat4101 Summary of contents
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... LED 5 © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice DESCRIPTION The CAT4101 is a constant-current sink driving a string of high-brightness LEDs with very low dropout of 0 full load. It requires no inductor, provides a low noise operation components. The LED current is set by an external resistor connected to the RSET pin ...
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... CAT4101 ABSOLUTE MAXIMUM RATINGS Parameter VIN, RSET, EN/PWM LED Voltage Storage Temperature Range Junction Temperature Range Lead Temperature RECOMMENDED OPERATING CONDITIONS Parameter VIN Ambient Temperature Range LED Pin Current Typical application circuit with external components is shown on page 1. ELECTRICAL OPERATING CHARACTERISTICS Min and Max values in bold are over recommended operating conditions unless specified otherwise. ...
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... This has no effect on the dimming accuracy, because the turn-on time T in the range of 1 µs. To ensure that PWM pulses are recognized, pulse width low time T CAT4101 enters a “zero current” shutdown mode after delay (typical) when EN/PWM is held low. 3 CAT4101 Min ...
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... CAT4101 TYPICAL PERFORMANCE CHARACTERISTICS 3 LED Quiescent Current vs. VIN Voltage (I 1.2 No Load 1.0 0.8 0.6 0.4 3.0 3.5 4.0 INPUT VOLTAGE [V] Quiescent Current vs. VIN Voltage (Full Load) 8.5 Full Load 8.0 7.5 7.0 6.5 3.0 3.5 4.0 INPUT VOLTAGE [V] LED Current Change vs. VIN Voltage 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE [V] Doc. No. MD-5036, Rev μ LED 25° ...
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... SCILLC. All rights reserved. Characteristics subject to change without notice = 1 μ LED 25°C unless otherwise specified. IN AMB 4.5 5.0 5 50kHz 5kHz 10 100 5 CAT4101 RSET Pin Voltage vs. Temperature 1.30 1.25 1.20 1.15 1.10 - TEMPERATURE [ºC] PWM 200 Hz, 1% Duty Cycle EN/PWM Threshold vs. VIN 1.4 1.2 -40ºC 25ºC 1 ...
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... CAT4101 PIN DESCRIPTIONS Name Pin EN/PWM 1 VIN 2 GND 3 RSET 4 LED 5 TAB – PIN FUNCTION VIN is the supply pin for the device. A small 0.1 µF ceramic bypass capacitor is optional for noisy environments. The maximum operating voltage is 6.0 V. Whenever the input supply falls below the ...
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... VIN EN/PWM RSET Figure 2. CAT4101 Functional Block Diagram BASIC OPERATION The CAT4101 has one highly accurate LED current sink to regulate LED current in a string of LEDs. The LED current is mirrored from the current flowing from the RSET pin according to the following formula: 1.2 V ≅ ...
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... VIN LED RECOMMENDED LAYOUT The board layout should provide good thermal CAT4101 dissipation through the PCB. Multiple via can be used to connect the tab of the CAT4101 to a large EN/PWM ground plane underneath the package. RSET Input capacitor C1 should be placed as close to the GND driver IC as possible ...
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... For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard TO-263. © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice θ END VIEW 9 CAT4101 BOTTOM VIEW SYMBOL MIN NOM MAX A 4.20 4.80 A1 0.00 0.25 b 0.60 0.88 c ...
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... Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard plated finish is Matte-Tin. (3) The device used in the above example is a CAT4101TV-T75 (TO-263, Matte-Tin, Tape & Reel, 750/Reel). (4) For additional temperature options, please contact your nearest ON Semiconductor Sales office. Doc. No. MD-5036, Rev. D (1) ...
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... N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 11 CAT4101 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative Doc. No. MD-5036 Rev. D ...