Datasheet Texas Instruments LM3431AMH/NOPB
| Manufacturer | Texas Instruments |
| Series | LM3431 |
| Part Number | LM3431AMH/NOPB |
3-Channel Constant Current LED Driver with Integrated Boost Controller 28-HTSSOP -40 to 125
Datasheets
LM3431/31A/31Q/31AQ 3-Chan Constant Current LED Driver w/Integrated Boost Cntr datasheet
PDF, 1.9 Mb, Revision: G, File published: May 2, 2013
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Packaging
| Pin | 28 |
| Package Type | PWP |
| Industry STD Term | HTSSOP |
| JEDEC Code | R-PDSO-G |
| Package QTY | 48 |
| Carrier | TUBE |
| Device Marking | LM3431AMH |
| Width (mm) | 4.4 |
| Length (mm) | 9.7 |
| Thickness (mm) | 1 |
| Pitch (mm) | .65 |
| Max Height (mm) | 1.2 |
| Mechanical Data | Download |
Parametrics
| Dimming Method | Analog,PWM |
| Input Voltage | DC/DC Type |
| Iout(Max) | 0.6 A |
| Iq(Typ) | 4 mA |
| Operating Temperature Range | -40 to 125 C |
| Package Group | HTSSOP |
| Package Size: mm2:W x L | 28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) PKG |
| Power Factor Correction | N/A Min |
| Rating | Catalog |
| Regulated Outputs | 3 |
| Special Features | Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown |
| Switching Frequency(Max) | 1000 kHz |
| Switching Frequency(Min) | 200 kHz |
| Topology | Boost,Boost with Current Sink,Multi-Channel |
| Type | Controller,Inductive |
| Vin(Max) | 36 V |
| Vin(Min) | 4.5 V |
| Vout(Max) | 40 V |
| Vout(Min) | 5.5 V |
| Vref | 2.5 V |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: LM3431EVAL
Evaluation Board for the 3-Channel Constant Current LED Driver with Integrated Boost Controller
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- AN-1656 Design Challenges of Switching LED Drivers (Rev. A)PDF, 171 Kb, Revision: A, File published: May 3, 2013
Using a switching regulator as an LED driver requires the designer to convert a voltage regulator into acurrent regulator. Beyond the challenge of changing the feedback system to control current, the LEDsthemselves present a load characteristic that is much different than the digital devices and other loads thatrequire constant voltage. The LED WEBENCHВ® online design environment predicts and
Model Line
Series: LM3431 (4)
- LM3431AMH/NOPB LM3431AMHX/NOPB LM3431MH/NOPB LM3431MHX/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > LED Driver > Illumination & General Lighting LED Driver
