Part Number(s)
(NSID) | Top View | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM2755TM/NOPB
RoHS Status |
MICRO SMD | Full production
Lead Time: 6 weeks
 |
| $0.50 each at 1K+ pcs | reel
of
250
 |
LM2755TMX/NOPB
RoHS Status |
MICRO SMD | Full production
Lead Time: 6 weeks
|
| $0.50 each at 1K+ pcs | reel
of
3000
|
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM2755.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM2755 is located at RoHS Status.
Part Number(s)
(NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM2755TMEV
| LM2755TM Evaluation Board | Full production
|
| $115.00 each | 1 |
| General Description:
The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I2 C compatible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed to linearly spaced) to better match the response of the human eye to changing brightness levels.
The LM2755 evaluation board is designed to display the functionality of the LM2755. With a charge-pump-based boost converter, and three highly programmable constant current LED drivers, the LM2755 is ideal for driving RGB LEDs. The timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) of each LED can be programmed to create a large number of different color and lighting schemes. The LM2755 is available in National Semiconductor's 18-bump µ SMD package.
Features:
- 90% Peak Efficiency
- Total solution size < 13mm2
- No Inductor Required: Only 4 Inexpensive Ceramic Caps
- 3 Independently Controlled Constant Current Outputs
- Programmable Trapezoidal Dimming Waveform on Each Output
- Programmable Timing Control Via Internal Registers and External Clock Synchronization Input
- 32 Exponential Dimming Steps with 800:1 Dimming Ratio
- Programmable brightness control via I2C compatible interface
- Hardware Enable Pin
- Wide input voltage range: 2.7V to 5.5V
- Tiny 18-bump thin micro SMD: 1.8mm x 1.6mm x 0.6mm
Applications:
- Indicator LEDs
- Keypad LED Backlight
- Display LED Backlight
- Fun-light LEDs
|
National Semiconductor follows the provisions of the Product Stewardship Guide for Customers
(
CSP-9-111C1)
and Banned Substances and Materials of Interest Specification
(
CSP-9-111S2)
for regulatory environmental compliance. Details may be found at:
www.national.com/en/packaging/greennopb.html.
Lead free products are RoHS compliant.
Lead Free product status is available through the search tool located
here
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM2755.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM2755 is located at RoHS Status.
