Datasheet Texas Instruments LM3431
| Manufacturer | Texas Instruments |
| Series | LM3431 |
3-Channel Constant Current LED Driver with Integrated Boost Controller
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
Extract from the document
Status
| LM3431AMH/NOPB | LM3431AMHX/NOPB | LM3431MH/NOPB | LM3431MHX/NOPB | |
|---|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No | No | Yes | Yes |
Packaging
| LM3431AMH/NOPB | LM3431AMHX/NOPB | LM3431MH/NOPB | LM3431MHX/NOPB | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Pin | 28 | 28 | 28 | 28 |
| Package Type | PWP | PWP | PWP | PWP |
| Industry STD Term | HTSSOP | HTSSOP | HTSSOP | HTSSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G | R-PDSO-G | R-PDSO-G |
| Package QTY | 48 | 2500 | 48 | 2500 |
| Carrier | TUBE | LARGE T&R | TUBE | LARGE T&R |
| Device Marking | LM3431AMH | LM3431AMH | LM3431MH | LM3431MH |
| Width (mm) | 4.4 | 4.4 | 4.4 | 4.4 |
| Length (mm) | 9.7 | 9.7 | 9.7 | 9.7 |
| Thickness (mm) | 1 | 1 | 1 | 1 |
| Pitch (mm) | .65 | .65 | .65 | .65 |
| Max Height (mm) | 1.2 | 1.2 | 1.2 | 1.2 |
| Mechanical Data | Download | Download | Download | Download |
Parametrics
| Parameters / Models | LM3431AMH/NOPB | LM3431AMHX/NOPB | LM3431MH/NOPB | LM3431MHX/NOPB |
|---|---|---|---|---|
| Dimming Method | Analog,PWM | Analog,PWM | Analog,PWM | Analog,PWM |
| Input Voltage, Type | DC/DC | DC/DC | DC/DC | DC/DC |
| Iout(Max), A | 0.6 | 0.6 | 0.6 | 0.6 |
| Iq(Typ), mA | 4 | 4 | 4 | 4 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package Group | HTSSOP | HTSSOP | HTSSOP | HTSSOP |
| Package Size: mm2:W x L, PKG | 28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) | 28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) | 28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) | 28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) |
| Power Factor Correction, Min | N/A | N/A | N/A | N/A |
| Rating | Catalog | Catalog | Catalog | Catalog |
| Regulated Outputs | 3 | 3 | 3 | 3 |
| Special Features | Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown | Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown | Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown | Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown |
| Switching Frequency(Max), kHz | 1000 | 1000 | 1000 | 1000 |
| Switching Frequency(Min), kHz | 200 | 200 | 200 | 200 |
| Topology | Boost,Boost with Current Sink,Multi-Channel | Boost,Boost with Current Sink,Multi-Channel | Boost,Boost with Current Sink,Multi-Channel | Boost,Boost with Current Sink,Multi-Channel |
| Type | Controller,Inductive | Controller,Inductive | Controller,Inductive | Controller,Inductive |
| Vin(Max), V | 36 | 36 | 36 | 36 |
| Vin(Min), V | 4.5 | 4.5 | 4.5 | 4.5 |
| Vout(Max), V | 40 | 40 | 40 | 40 |
| Vout(Min), V | 5.5 | 5.5 | 5.5 | 5.5 |
| Vref, V | 2.5 | 2.5 | 2.5 | 2.5 |
Eco Plan
| LM3431AMH/NOPB | LM3431AMHX/NOPB | LM3431MH/NOPB | LM3431MHX/NOPB | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
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)
Manufacturer's Classification
- Semiconductors> Power Management> LED Driver> LED Lighting - Illumination