4-channel high-power LED lighting drive circuit board
Model No: LM3464MSD-0011
Brand Name: NJ-WHD
Features:
■ Wide input voltage range:12V-80V
■ Dynamic Headroom Control ensures maximum efficiency
■ 4 output channels with individual current regulation
■ High channel to channel accuracy
■ High speed PWM dimming
■ Minimum brightness limit for thermal foldback control
■ Vin Under-Voltage-Lockout
■ Fault protection and indication
■ Thermal Shutdown
■ Cascade operation for output channel expansion
Applications:
■ Streetlights
■ LED lighting solutions
Introduction:
LM3464MSD-0011 circuit board is a 4-channel high-power LED lighting driver circuit board. It uses the LM3464 chip design. It has four independent linear current driver can drive the four high-power LED strings, each LED to ensure accurate and constant drive current and low current ripple.
This board uses DHC Dynamic Headroom Control technology automatically optimizes the efficiency of the system. It has a thermal feedback control, high speed PWM dimming, undervoltage lockout, and fault protection and fault indication features. Scalable output channels, several cascaded driver circuit board, to achieve high brightness drive.
4-channel high-power LED lighting drive circuit boards, flexible, system structure is simple, as long as the AC / DC power supply, 4-channel high-power LED lighting drive circuit board and the 4 string of high-power LED board three-part modular connectors can be, In Figure 1, Figure II.
LM3464MSD-0011 circuit board can drive four high-power LED strings. The design voltage of each LED string is 43 ~ 55V, design current is 290mA, thermal feedback to adjust voltage is 3.25 ~ 0.4V. Reference: Each LED string line connecting 14 nominal forward voltage drop of 3.5V 1W high power LED.
The circuit board is a wide input voltage range, according to the LED to adjust the design parameters, such as the LED string voltage and current.
AC / DC power supply options:
1. AC / DC power supply output voltage required to achieve 55V. When not connected to the drive circuit board and LED board, the output voltage of AC / DC power supply is 43V.
2. AC / DC power supply output voltage of 55V, the power can output 65W (65W = 55V × 290mA).
3. AC / DC power output feedback divider resistors R1 and R2 are optional:
R1=18.7Kohm or 19.1Kohm
R2=1.15Kohm or 1.18Kohm
Recommended Use: R1=18.7Kohm, R2=1.18Kohm
NTC negative temperature coefficient thermistor options:
1. Thermal feedback normal temperature, NTC resistance: RNTC≥4.96Kohm.
2. thermal feedback regulation of temperature, NTC Resistance: 4.96Kohm≥RNTC≥98ohm.
3. thermal feedback shutdown temperature, NTC resistance: RNTC≤98ohm.
Provide technical support and accessories such as AC/DC power supplies.
Circuit board diagram and size: 50mm x 75mm
Application Connection Diagram
Figure I ,Single control circuit board application
Figure II ,The control circuit board extension application
