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CAT4134
500 mA Dual Channel
Movie/Flash LED Driver
Description
The CAT4134 is a high power, dual channel boost converter which
provides two matched LED currents. Output current levels are
controlled by one of two resistors RSET or RFLASH. When the
FLASH input pin is low (movie mode), RSET sets the current. When
FLASH is high (flash mode), the resistor RFLASH sets the LED
current. Each channel drives two or three white LEDs in series and
provides a regulated current to control their brightness. Input supply
down to 3 V is supported, making the device ideal for Li ? Ion battery
applications.
High frequency low noise operation allows the device to be used
with small external inductors and ceramic capacitors while still
maintaining excellent efficiency. When not in use the device can be
http://onsemi.com
TDFN ? 12
HV2 SUFFIX
CASE 511AN
PIN CONNECTIONS
placed into a “zero” quiescent mode via the shutdown pin.
In addition to soft-start control and current limiting, the CAT4134
include thermal shutdown protection. A dedicated overvoltage pin
(OVP) allows the user to limit the maximum LED supply voltage. The
device is packaged in the 12 ? pad TDFN 3 mm x 3 mm.
FLASH
EN
PGND
AGND
1
TAB
is
GND
OVP
SW
SW
VIN
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
LED2 RSET
LED1 RFLASH
(Top View)
MARKING DIAGRAM
HAAS HAAU
HAAS = CAT4134HV2 ? T2
HAAU = CAT4134HV2 ? GT2
ORDERING INFORMATION
Device Package Shipping
Applications
CAT4134HV2 ? T2
(Note 1)
TDFN ? 12
(Pb ? Free)
2,000/
Tape & Reel
?
?
?
?
?
Camera Flash
Flash Light
High ? power White LEDs
Digital Still Cameras
Color LCD Backlighting
CAT4134HV2 ? GT2 TDFN ? 12 2,000/
(Note 2) (Pb ? Free) Tape & Reel
1. Matte ? Tin Plated Finish (RoHS ? compliant).
2. NiPdAu Plated Finish (RoHS ? compliant)
? Semiconductor Components Industries, LLC, 2010
February, 2010 ? Rev. 2
1
Publication Order Number:
CAT4134/D
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相关代理商/技术参数
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