LM3464AMHX/NOPB
Active95-V LED DRIVER WITH DYNAMIC HEADROOM CONTROL AND THERMAL CONTROL INTERFACES
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LM3464AMHX/NOPB
Active95-V LED DRIVER WITH DYNAMIC HEADROOM CONTROL AND THERMAL CONTROL INTERFACES
Technical Specifications
Parameters and characteristics for this part
| Specification | LM3464AMHX/NOPB |
|---|---|
| Applications | Lighting |
| Dimming | Analog, PWM |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 4 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 28-PowerTSSOP |
| Package / Case [custom] | 4.4 mm |
| Package / Case [custom] | 0.173 " |
| Supplier Device Package | 28-HTSSOP |
| Type | DC DC Controller |
| Voltage - Supply (Max) [Max] | 95 V |
| Voltage - Supply (Min) [Min] | 12 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 5.89 | |
| Digi-Reel® | 1 | $ 5.89 | ||
| Tape & Reel (TR) | 2500 | $ 2.96 | ||
| Texas Instruments | LARGE T&R | 1 | $ 4.05 | |
| 100 | $ 3.30 | |||
| 250 | $ 2.59 | |||
| 1000 | $ 2.20 | |||
Description
General part information
LM3464A Series
The LM3464/64A is a 4-channel high voltage current regulator that provides a simple solution for LED lighting applications. The LM3464/64A provides four individual current regulator channels and works in conjunction with external N-channel MOSFETs and sense resistors to give accurate driving current for every LED string. Additionally, the Dynamic Headroom Control (DHC) output can be interfaced to the external power supply to adjust the LED supply voltage to the lowest level that is adequate to maintain all the string currents in regulation, yielding the optimal overall efficiency.
Digital PWM or analog voltage signals can be used to control the duty cycle of the all the channels. When analog control is used, the dimming frequency can be programmed via an external capacitor. A minimum duty cycle control is provided in the conditions that the analog dimming is configured as thermal feedback.
Protection features include VIN under-voltage lock-out, LED open/short circuit and over-temperature fault signaling to the system controller.
Documents
Technical documentation and resources
