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PDF RYC9901 Data sheet ( Hoja de datos )
| Número de pieza | RYC9901 | |
| Descripción | Multi-LED Boost | |
| Fabricantes | Tyco | |
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RYC9901
Multi-LED Boost
GENERAL DESCRIPTION
The RYC9901 device is a low-cost integrated boost
converter IC specifically designed for driving multi-
LED arrays. It can be operated from a single
Lithium cell or two alkaline cells, and drives up to 7
LEDs. All LEDs are in series, and the RYC9901
device regulates at constant current, yielding
uniform illumination. The RYC9901 device features
an active low enable/ dimming pin and thermal
protection, and is available in a space-saving SOT-
23-6 package.
Raychem
Power Management ICs
www.tycopowercomponents.com
Document: SCD 25493
Status: Released
Rev.: D
Rev Date: March 8, 2005
FEATURES
• Constant current regulation
• Up to 700mW output power
• 1.9V to 5.5V input voltage range
• 25V maximum output voltage
• 1µA maximum shutdown current
• SOT-23-6 package
APPLICATIONS
• Backlight for LCD panels
• Cellular telephones
• Handy Terminals
• PDAs
• Portable lighting
• Battery-powered backlight applications
TYPICAL APPLICATION SCHEMATIC
16
2 RYC9901 5
34
ENABLE / DIM
Tyco Electronics Corporation 308 Constitution Drive, Menlo Park, CA 94025 Tel: (800) 227-4856 Fax: (800) 227-4866
© 2005 Tyco Electronics Corporation.
1 of 12
1 page  
RYC9901
Multi-LED Boost
TYPICAL CHARACTERISTICS (CONT)
Frequency Normalized at 25°C
1.2
1.15
1.1
1.05
1
0.95
0.9
0.85
0.8
-55 -35 -15 5
25 45 65 85 105 125
Junction Temperature (ºC)
Raychem
Power Management ICs
www.tycopowercomponents.com
Document: SCD 25493
Status: Released
Rev.: D
Rev Date: March 8, 2005
Feedback Voltage Normalized at 25°C
1.1
1.05
1
0.95
0.9
0.85
0.8
-55 -35 -15
5
25 45 65 85 105 125
Junction Temperature (ºC)
Supply Current Normalized at 25°C
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
-55 -35 -15 5
25 45 65 85 105 125
Junction Temperature (ºC)
10
9
8
7
6
5
4
3
2
1
0
-55
Disable Supply Current Normalized at 25°C
-35 -15 5 25 45 65 85 105
Junction Temperature (ºC)
125
Tyco Electronics Corporation 308 Constitution Drive, Menlo Park, CA 94025 Tel: (800) 227-4856 Fax: (800) 227-4866
© 2005 Tyco Electronics Corporation.
5 of 12
5 Page 
RYC9901
Multi-LED Boost
PACKAGE INFORMATION
Raychem
Power Management ICs
www.tycopowercomponents.com
Document: SCD 25493
Status: Released
Rev.: D
Rev Date: March 8, 2005
6 Pin SOT-23 PACKAGE NOTES:
1. Dimensions and tolerance per ANSI Y14.5M-1982.
2. Dimensions A and B are datums and T is a datum surface.
3. Controlling dimensions: Millimeters
4. Dimension A and B do not include mold flash. Mold flash shall not exceed 0.15mm [0.006] per side.
5. Dimension D does not include interlead flash. Interlead flash shall not exceed 0.25 mm [0.010].
Tyco Electronics Corporation 308 Constitution Drive, Menlo Park, CA 94025 Tel: (800) 227-4856 Fax: (800) 227-4866
© 2005 Tyco Electronics Corporation.
11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet RYC9901.PDF ] | |
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