MIC2287YD5-TR

Produktets egenskaber

Producent:
 Microchip
Pakke/etui:
 SOT-23-5
Antal kanaler: 1 kanal
Produkt: LED Drivers
Produkttype: LED Lighting Drivers

 

Kategori:
Producent:
 Microchip
Produktkategori: LED Lighting Drivers
Monteringsstil:
 SMD/SMT
Pakke/etui:
 SOT-23-5
Number of Outputs:
 1 Output
Output Current:
 750 mA
Topology:
 Boost
Operating Frequency:
 1.2 MHz
Output Voltage:
 Adjustable
Minimum driftstemperatur:
 - 40 C
Maksimal driftstemperatur:
 + 125 C
Emballage:
 Spole
Emballage:
 Klip tape
Emballage:
 MouseReel
Features:
 PWM Dimming, Open LED Protection
Brand: Microchip Technology
Input Voltage: 2.5 V to 10 V
Fugtfølsom: Ja
Antal kanaler: 1 kanal
Produkt: LED Drivers
Produkttype: LED Lighting Drivers
Fabrikspakke Antal: 3000
Underkategori: Driver ICs
Supply Current – Max: 5 mA
Del # Aliasser: MIC2287YD5 TR
Enhedsvægt: 0.000222 oz

IS32LT3175N/P Single-Channel Linear LED Drivers

ISSI IS32LT3175N/P Single-Channel Linear LED Drivers come with fade in/out and PWM dimming. The regulators serve as a stand-alone LED driver-configurable from 20mA to 150mA with external resistors, no microcontroller is necessary. A logic level “courtesy light” signal from the PWM pin can be interfaced to precisely drive the LED channel. The IS32LT3175P obtains a positive polarity PWM signal. In addition, the IS32LT3175N obtains a negative polarity PWM signal. The regulator integrates a 63-step fade-in and fades out the algorithm (Gamma correction). This causes the output LED current to increasingly rise up to the full source value after the EN pin is pulsed.

MIC2287 PWM White LED Drivers

Microchip Technology MIC2287 PWM White LED Drivers are a 1.2MHz pulse width modulated (PWM), boost-switching regulator that is optimized for constant-current, white LED driver applications. With a maximum output voltage of 34V and a switch current of over 500mA, the MIC2287 easily drives a string of up to eight white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The MIC2287 implements a constant frequency, 1.2MHz PWM control scheme. The high-frequency PWM operation saves board space by reducing external component sizes. The added benefit of the constant frequency PWM scheme, as opposed to variable frequency topologies, is much lower noise and input ripple injected back to the battery source. To optimize efficiency, the feedback voltage is set to only 95mV. This reduces the power dissipation in the current set resistor and allows the lowest total output voltage, hence minimal current draw from the battery.

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