CAT4002A_10 ONSEMI | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 11
Technical content
Features
- 2 and 4 LED Current Sinks with Tight Matching
- 32 Dimming Levels
- Low Dropout Driver 50 mV at 20 mA
- No Switching Noise
- Shutdown Current less than 1 /C0109A
- LED Current set by External Resistor
- Dimming via 1−wire EZDim/C0116 Interface
- Thermal Shutdown Protection
- 6−lead TSOT−23, SC−70, and 8−pad UDFN 2 mm x 2 mm Packages
- These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
Applications
- LCD Display Backlight • Digital Still Cameras
- Cellular Phones • Handheld Devices
Figure 1. Typical Application Circuit
ORDERING INFORMATION
SC70−6 SD SUFFIX CASE 419AD TSOT23−6 TD SUFFIX CASE 419AF UDFN−8 HU2G SUFFIX CASE 517AW PIN CONNECTIONS CAT4004A UDFN−8 VIN RSET LED4 LED3 EN/DIM GND LED1 LED2 RSET LED2 EN/DIM GND VIN LED1 CAT4002A TSOT23−6 GND LED2VIN RSET LED1EN/DIM CAT4002A SC70−6 (Top Views) See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet.
Table 1. ABSOLUTE MAXIMUM RATINGS Table 2. ELECTRICAL OPERATING CHARACTERISTICS (Min and Max values are over recommended operating conditions
- For CAT4004A, I LEDAVG = (ILED,CH1 + ILED,CH2 + ILED,CH3 + ILED,CH4) / 4
Table 3. RECOMMENDED OPERATING CONDITIONS NOTE: Typical application circuit with external components is shown on page 1. Table 4. RECOMMENDED EN/DIM TIMING (For 2.4 V ≤ VIN ≤ 5.5 V, over full ambient temperature range −40°C to +85°C.)
32 Levels
Figure 2. CAT400XA EN/DIM Dimming Timing Diagram full scale current according to the resistor RSET. Table 5. RSET RESISTOR AND LED CURRENT
Table 6. PIN DESCRIPTIONS channels are disabled and the device enters shutdown mode. the RSET input becomes high impedance. connected to the ground plane on the PCB. soldered to the PCB and connected to the ground plane.
4 Current Sink
Figure 15. CAT4004A Functional Block Diagram
proportional to the current sourced from the RSET pin. Each pulse width should be between 200 ns and 100 /C0109s. high frequency, the LED current can quickly be set to zero. EN/DIM is held low for 3 ms typical. EN/DIM after the power−up, as shown in Table 7. Table 7. DIMMING LEVELS Figure 16. EN/DIM Digital Dimming Timing Diagram
CAT4002A, CAT4004A http://onsemi.com PACKAGE DIMENSIONS UDFN8, 2x2 CASE 517AW−01 ISSUE O L E PIN #1 INDEX AREA PIN #1 IDENTIFICATION DETAIL A D b e A TOP VIEW SIDE VIEW DETAIL A BOTTOM VIEW Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MO-229. SYMBOL MIN NOM MAX A 0.45 0.50 0.55 A1 0.00 0.02 0.05 b 0.18 0.25 0.30 D 1.90 2.00 2.10 D2 1.50 1.60 1.70 E 2.00 E2 0.80 0.90 1.00 e 1.90
0.50 BSC
2.10 L 0.20 0.30 0.45
CAT4002A, CAT4004A http://onsemi.com PACKAGE DIMENSIONS SC−70, 6 Lead, 1.25x2 CASE 419AD−01 ISSUE O D A L L1 L2 ee b c TOP VIEW SIDE VIEW END VIEW /C01131 /C01131 Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-203. E /C0113 SYMBOL MIN NOM MAX θ A b c D E e L 0º 8º 0.00 0.15 0.10 0.26 1.80 1.80 1.15
0.65 BSC
0.15 BSC
1.10 0.10 0.30 0.18 0.46 2.20 2.40 1.35 0.80 θ1 4º 10º A2 0.80 1.00
0.42 REF
0.36 2.00 2.10 1.25
CAT4002A, CAT4004A http://onsemi.com PACKAGE DIMENSIONS TSOT−23, 6 LEAD CASE 419AF−01 ISSUE O E1 E e b D c A TOP VIEW SIDE VIEW END VIEW L Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-193. SYMBOL θ MIN NOM MAX /C0113 A b c D E e L 0º 8º 0.01 0.80 0.30 0.12 0.30 0.05 0.87 0.15
2.90 BSC
2.80 BSC
1.60 BSC
0.95 TYP
0.40
0.60 REF
0.25 BSC
1.00 0.10 0.90 0.45 0.20 0.50
Table 8. ORDERING INFORMATION
- All packages are RoHS −compliant (Lead−free, Halogen−free).
- The standard lead finish is NiPdAu.
- The device used in the above example is a CAT4004AHU2 −GT3 (UDFN, NiPdAu, Tape & Reel, 3,000/Reel).
- For additional package and temperature options, please contact your nearest ON Semiconductor Sales office.
- For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D. arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.