Datasheets
Application Notes
Other Technical Documents
Part Number(s)
(NSID) | Top View | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM2754SQ/NOPB
LM2754SQ
RoHS Status |
LLP | Full production
Lead Time: 6 weeks
 |
| $0.80 each at 1K+ pcs | reel
of
1000
 |
LM2754SQX/NOPB
LM2754SQX
RoHS Status |
LLP | Full production
Lead Time: 6 weeks
|
| $0.80 each at 1K+ pcs | reel
of
4500
|
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 LM2754.
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 LM2754 is located at RoHS Status.
Part Number(s)
(NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM2754SQEV
| 800mA Switched Capacitor Flash LED Driver with Time-Out Protection | Full production
|
| $96.70 each | 1 |
| Description:
The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.
Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.
The LM2754 is available in a small 24-pin thermally enhanced LLP package.
Features:
- Up to 800mA Output Current
- Wide Operating Input Voltage Range: 2.8V to 5.5V
- Drives 1, 2, 3, or 4 LEDs in Parallel
- Ability to Disable One Current Sink Via the SEL Pin to Accommodate 3-LED Flash Modules
- Time-Out Circuitry Limits Flash Duration to 1 Second
- TX Input Ensures Synchronization with RF Power Amplifier Pulse
- Adaptive 1x, 1.5x, and 2x Gains for Maximum Efficiency
- 1MHz Constant Frequency Operation
- Output Current Limit
- True Shutdown Output Disconnect
- <1µA Shutdown Current
- Internal Soft-Start Limits Inrush Current
- No Inductor Required
- Total Solution Size without LED <28mm square
- Low Profile 24-Pin LLP Package (4mm x 4mm x 0.8mm)
Applications:
- Camera Flash in Mobile Phones
- Flash for Digital Cameras
- Supplies for DSPs, Microprocessors, Memory, MP3 Players, Pagers, Other Portable Devices
|
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 LM2754.
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 LM2754 is located at RoHS Status.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM2754SQ | CMOS7 | 0 | 21301 | 0 | 0 | 1584000 | 3 | 449464325
|
|
LM2754SQX | CMOS7 | 0 | 21301 | 0 | 0 | 1584000 | 3 | 449464325
|
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click
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 LM2754.
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 LM2754 is located at RoHS Status.
