CAT4134 ONSEMI | Alldatasheet

Document overview

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Technical content

Features

  • Dual Mode (Movie or Flash) Operation
  • Independent Movie/Flash LED Current Control
  • Can Drive 2, 3, 4 or 6 LEDs
  • High LED Current (250 mA Max per Channel)
  • Power Efficiency up to 85%
  • Dual Frequency Mode 1.2 MHz and 900 kHz
  • Soft−start Inrush Current
  • Adjustable Overvoltage Protection
  • Thermal Shutdown Protection
  • Operating Temperature Range −40°C to +85°C
  • 12−pad TDFN 3 mm x 3 mm Package
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

Applications

  • Camera Flash
  • Flash Light
  • High−power White LEDs
  • Digital Still Cameras
  • Color LCD Backlighting http://onsemi.com TDFN−12 HV2 SUFFIX CASE 511AN PIN CONNECTIONS HAAS MARKING DIAGRAM HAAS = CAT4134HV2−T2 HAAU = CAT4134HV2−GT2 (Top View) OVPFLASH EN PGND AGND LED2 LED1 SW SW VIN RSET RFLASH TAB is GND HAAU Device Package Shipping

ORDERING INFORMATION

CAT4134HV2−T2 (Note 1) TDFN−12 (Pb−Free) 2,000/ Tape & Reel CAT4134HV2−GT2 (Note 2) TDFN−12 (Pb−Free) 2,000/ Tape & Reel 1. Matte −Tin Plated Finish (RoHS−compliant). 2. NiPdAu Plated Finish (RoHS −compliant)

Figure 1. Typical Application Circuit

1 M/C0087

Table 1. ABSOLUTE MAXIMUM RATINGS Table 2. RECOMMENDED OPERATING CONDITIONS

Table 3. ELECTRICAL OPERATING CHARACTERISTICS

Figure 2. LED Current Regulation Figure 3. LED Current Regulation Figure 4. Current Gain vs. RFLASH Figure 5. LED Current Regulation Figure 6. Efficiency vs. Output Current Figure 7. Efficiency vs. Input Voltage

2 LEDs 2 LEDs

2 LEDs

2 LEDs at 100 mA

Table 4. PIN DESCRIPTION 1 FLASH Logic input, set high to select the flash mode. 2 EN Enable control logic input (Active High). 3 PGND Power ground reference. 4 AGND Analog ground reference. 7 RFLASH Resistor connection to set Flash mode LED current. 8 RSET Resistor connection to set Movie mode LED current. 10, 11 SW Drain connection of low resistance power MOSFET.

12 OVP Over Voltage Protection comparator input

*LED1 or LED2 pin should not be left floating. the VIN and GND pins near the device. than 1.4 V , the device is fully enabled. the device transitions from Movie mode to Flash mode. returns back to Movie mode operation. ground. The LED current is a function of the resistor value. connected to the ground plane on the PCB. pin should be as short as possible with minimum loop area. SW pin will be clamped to approximately 21 V . driver stops switching. The output VOUT then drops down. threshold, the part starts switching again. and connected to the ground plane.

provides a lower noise operation. voltage on the SW pin is set to 17 V .

2 Current Sink

Figure 15. Block Diagram

http://onsemi.com

Application Information

The typical application for the CAT4134 is in a camera−equipped cellular phone where the LEDs are used for illumination in flash mode with short duration high−current pulse and in movie mode with continuous lighter load. In movie mode, the FLASH pin is set low. NOTE: Hot-plugging the LEDs while the output is fully charged is not recommended. If the LEDs are disconnected, the device should first be powered-down and the output discharged before reconnecting the LEDs to the output and the LED pins. EN FLASH LED1, LED2 Current movie mode movie mode flash mode Figure 16. Timing Diagram resistor values in movie and flash modes. and there is no current flowing in either LED1 or LED2 pins.

http://onsemi.com PACKAGE DIMENSIONS TDFN12, 3x3 CASE 511AN−01 ISSUE A E2P eM R N eb A SIDE VIEW BOTTOM VIEW E D TOP VIEW PIN#1 INDEX AREA PIN#1 ID FRONT VIEW RECOMMENDED LAND PATTERN A L Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MO-229. SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 0.203 b 0.18 0.23 0.30 D 2.90 3.00 3.10 D2 2.30 2.40 2.50 E 3.00 E2 1.55 1.70 1.75 e 2.90

0.45 BSC

3.10 L 0.30 0.40 0.50 M 0.25 0.30 0.35 N 0.70 P 2.70 3.00 3.10 R 0.60

2.25 TYP

0.80 0.178 0.228

http://onsemi.com Example of Ordering Information (Note 5) Prefix Device # Suffix Company ID CAT 4134 Product Number 4134 T: Tape & Reel 2: 2,000 / Reel Tape & Reel (Note 7) (Optional) HV2 − G Lead FinishPackage HV2: TDFN Blank: Matte−Tin G: NiPdAu 3. All packages are RoHS −compliant (Lead−free, Halogen−free). 4. The standard lead finish is NiPdAu. 5. The device used in the above example is a CAT4134HV2 −GT2 (TDFN, NiPdAu, Tape & Reel, 2,000/Reel). 6. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. 7. 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. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability 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. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. CAT4134/D PUBLICATION ORDERING INFORMATION 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 LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative