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R1580 Series

Constant Current LED Driver

  • Consumer
  • Industrial
  • Automotive
  • PLP
  • AEC-Q100
  • RoHS

The R1580 is a 34-V constant-current LED driver controller. Internally, this device consists of a linear dimming controller using a PWM input signal, a thermal shutdown circuit (TSD), and an undervoltage lockout circuit (UVLO) in addition to the basic constant-current control circuits. A flicker-free wide-dimming constant-current LED driver can be configured by only adding an Nch MOSFET, a current sensing resistor and capacitors to the R1580. The FET to control current flow is placed externally, so that the R1580 will not give any influence on the current range capable of dealing with. The R1580 is linear dimmable with using a PWM signal on the DIM pin. The R1580 is capable of performing a constant-current control corresponding to the different PWM duty cycles. The R1580N002A is linear dimmable as low as 0.5% PWM duty cycle and the R1580N001A/ R1580N003A is linear dimmable as low as 1% PWM duty cycle. Unlike other LED drivers with PWM dimming, the R1580 can provide a smooth flicker-free dimming operation using linear dimming.

Specs & Datasheets

  Consumer Industrial Automotive
Input Voltage Range 3.6 V to 34.0 V (36.0 V)
Operating Temperature Range -40°C to 85°C -40°C to 105°C -40°C to 105°C
Supply Current Typ. 320 µA
Standby Current Typ. 140 µA (R1580N001A/ R1580N002A)
Typ. 28 µA (1580N003A)
PWM Input Dimmable Range 1% to 100% (R1580N001A/ R1580N003A)
0.5% to 100% (1580N002A)
Control Type Linear Dimmable Using a PWM Signal
Package SOT-23-6
Line Regulation Typ. 0.01%/V
Thermal Shutdown Protection Thermal Shutdown Temperature: Typ. 160°C

Download Datasheet

Technical Documents

Typical Application

Typical Application

R1700 + R1580 Typical Application Circuit, Buck-boost (Inverting) Converter

Integration of R1700 and R1580

The integration of R1700 and R1580 allows a smaller flicker-free operation in LED lighting applications than a conventional two-stage architecture.

Typical Characteristics

Comparison of Digital Image

PWM Dimming

Linear Dimming (R1580)

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
  • plpP
SOT-23-6 R1580N R1580N-FE
  • gradeIndustrialI
  • plpP
SOT-23-6 R1580N R1580N-YE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
SOT-23-6 R1580N R1580N-AE

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

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Functional Description

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