cat4002a ON Semiconductor, cat4002a Datasheet
![no-image](/images/manufacturer_photos/0/4/495/on_semiconductor_sml.jpg)
cat4002a
Available stocks
Related parts for cat4002a
cat4002a Summary of contents
Page 1
... Driver with 32 Dimming Levels and Rset Description The CAT4002A and CAT4004A provide respectively two and four matched low dropout current sources to drive LEDs. The CAT400XA uses an external resistor RSET to set the current in the LED channels. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching ...
Page 2
... I LEDAVG LED,CH1 For CAT4002A LEDAVG LED,CH1 MARKING DIAGRAMS VLYM TSOT23− CAT4002A Device Code Y = Production Year (last digit Production Month: 1 − Parameter (Min and Max values are over recommended operating conditions = 4.0 V, EN/DIM = High, and T IN AMB Conditions No load, RSET = Float No load, RSET = 4 ...
Page 3
Table 3. RECOMMENDED OPERATING CONDITIONS V IN Ambient Temperature Range I per LED pin LED NOTE: Typical application circuit with external components is shown on page 1. Table 4. RECOMMENDED EN/DIM TIMING Symbol Name T EN/DIM program low time LO ...
Page 4
... TYPICAL PERFORMANCE CHARACTERISTICS (CAT4002A 3 OUT 2.0 1.6 1.2 0.8 0 RSET (kW) Figure 3. Quiescent Current vs. RSET Input Voltage 1.0 0.8 0.6 0.4 0.2 0 −0.2 −0.4 −0.6 −0.8 −1.0 2.5 3.0 3.5 4.0 INPUT VOLTAGE (V) Figure 5. LED Current Change vs. Input Voltage 1.4 1.2 25°C 1.0 −40°C 0.8 80°C 0.6 0.4 2.0 2.5 3.0 3.5 4.0 INPUT VOLTAGE (V) Figure 7. EN/DIM High Threshold vs. Input ...
Page 5
... TYPICAL PERFORMANCE CHARACTERISTICS (CAT4002A 3 OUT 100 150 200 LED PIN VOLTAGE (mV) Figure 9. Dropout Characteristics Figure 11. Power Up Waveform Figure 13. Line Transient Waveform = LEDs AMB 100 ...
Page 6
Table 6. PIN DESCRIPTIONS Name EN/DIM Device enable (active high) and dimming control GND Ground reference LED1 LED1 cathode terminal LED2 LED2 cathode terminal LED3 LED3 cathode terminal (CAT4004A only) LED4 LED4 cathode terminal (CAT4004A only) RSET Connect external RSET ...
Page 7
Basic Operation The CAT400XA uses tightly matched current sinks to accurately regulate LED current in each channel proportional to the current sourced from the RSET pin. There are 32 different settings for LED brightness that can be programmed through the ...
Page 8
D E PIN #1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.45 0.50 A1 0.00 0.02 b 0.18 0.25 D 1.90 2.00 D2 1.50 1.60 E 1.90 2.00 E2 0.80 0.90 e 0.50 BSC L 0.20 0.30 Notes: (1) ...
Page 9
TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-203. PACKAGE DIMENSIONS SC−70, 6 Lead, 1.25x2 CASE 419AD−01 ISSUE O SYMBOL MIN ...
Page 10
TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-193. PACKAGE DIMENSIONS TSOT−23, 6 LEAD CASE 419AF−01 ISSUE O SYMBOL MIN A A1 0.01 A2 ...
Page 11
... Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 11 T3 Quantity per Reel 3,000 3,000 3,000 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT4002A/D ...