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PDF CAT4134 Data sheet ( Hoja de datos )
| Número de pieza | CAT4134 | |
| Descripción | 500mA Dual Channel Movie/Flash LED Driver | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CAT4134 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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500mA Dual Channel Movie/Flash LED
Driver
CAT4134
FEATURES
DESCRIPTION
Dual Mode (Movie or Flash) operation
Independent Movie/Flash LED current control
Can drive 2, 3, 4 or 6 LEDs
High LED Current (250mA max per channel)
Power efficiency up to 85%
Dual frequency mode 1.2MHz and 900kHz
Soft-start inrush current
Adjustable overvoltage protection
Thermal shutdown protection
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 3V is
supported, making the device ideal for Li-Ion battery
applications.
Operating temperature range -40ºC to +85ºC
12-pad TDFN 3mm x 3mm package
High frequency low noise operation allows the device to
be used with small external inductors and ceramic
APPLICATIONS
Camera flash
capacitors while still maintaining excellent efficiency.
When not in use the device can be placed into a “zero”
quiescent mode via the shutdown pin.
Flash light
High-power white LEDs
Digital still cameras
Color LCD backlighting
In addition to soft-start control and current limiting, the
CAT4134www.DataSheet4U.com include thermal shutdown protection. A
dedicated overvoltage pin (OVP) allows the user to limit
the maximum LED supply voltage. The device is
ORDERING INFORMATION
packaged in the 12-pad TDFN 3mm X 3mm.
Part Number Package
CAT4134HV2 Thin DFN-12
Lead Free*
Quantity Package
per Reel Marking
2000
HAAS
* Matte-Tin Finish
For Ordering Information details, see page 12.
PIN CONFIGURATION
Top View
FLASH
EN
PGND
AGND
LED2
LED1
1
2
3
4
5
6
TAB is GND
12 OVP
11 SW
10 SW
9 VIN
8 RSET
7 RFLASH
TYPICAL APPLICATION CIRCUIT
VIN
3V to 4.2V C1
10µF
OFF ON
RFLASH
18kΩ
RSET
20kΩ
L
22µH
D
SW
VIN
EN CAT4134
FLASH
LED1
RFLASH
LED2
RSET
OVP
AGND
PGND
C2
10µF
VOUT
L = Sumida CDRH3D16-220
D = Central CMDSH05-4 (500mA)
C2 = 10µF (rated 16V)
R1
1MΩ
R2
100kΩ
12-Pad TDFN 3mm x 3mm
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice.
1
Doc. No. 5021 Rev. A
1 page  
CAT4134
TYPICAL CHARACTERISTICS
VIN = 3.6V, FLASH = VIN, CIN = 4.7µF, COUT = 10µF, L = 22µH with 2 LEDs at 100mA, TAMB = 25ºC, unless
otherwise specified.
Power-up Transient (2 LEDs at 200mA)
Power-up Transient (2 LEDs at 200mA)
Power-up Transient (2 LEDs at 200mA)
Power-up Transient (2 LEDs at 200mA)
Switching Waveform in Flash mode (2 LEDs)
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice.
5
Doc. No. 5021 Rev. A
5 Page 
PACKAGE INFORMATION
Thin DFN 12-Pad 3mm x 3mm, 0.45mm Pitch
TDFN 12-Lead 3 x 3mm, 0.45mm Pitch
PIN 1 INDENT
C
D E2
CAT4134
PIN 1 ID
L
e
5xe
b
E
SYMBOL
A
A1
b
C
D
D2
E
E2
e
L
MIN
0.70
0.00
0.18
2.90
1.60
2.90
2.30
0.35
NOM
0.75
0.02
0.23
0.20 REF
3.00
1.70
3.00
2.40
0.45
0.45
MAX
0.80
0.05
0.30
3.10
1.80
3.10
2.50
0.55
A1
A
D2
LAND PATTERN
2.40
0.95
0.45
0.23
Notes:
1. All dimensions in millimeters. Angles in degrees.
2. Coplanarity shall not exceed 0.08mm.
3. Warpage shall not exceed 0.10mm.
4. Package length / package width are considered as special characteristic.
5. Refer JEDEC MO-229.
1.70
3.00
4.00
Legend:
Package
Land Pattern
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice.
11
Doc. No. 5021 Rev. A
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet CAT4134.PDF ] | |
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