Products Overview
APM81803 SYNCHRONOUS BUCK REGULATOR MODULE
Allegro MicroSystems
APM81803: 40V, 3A, Synchronous Buck Regulator Module with Low EMI and 6μA Quiescent Current
The ALT80800 is a compact, high-efficiency, low EMI LED Driver for automotive lighting applications. It is a synchronous buck switching regulator that provides constant-current output to drive high-power LEDs. It integrates both high-side and low-side N-channel DMOS switches for DC-to-DC step-down conversion. Output current is user-selectable by an external current sense resistor, and output voltage is automatically adjusted to drive various numbers of LEDs in a single string.
| Part Number | Type | Output Current | Topology | Mounting Style | Operating Frequency | Dimming | Applications | Maximum Frequency | Operating Temperature | Voltage - Supply | Package Type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| APM81803 | DC DC Regulator | 2A | Step-Down (Buck) | Surface Mount | 500kHz | Analog, PWM | Lighting | - | -40 °C ~ 125 °C(TA) | 4.5V ~ 55V | 16-Pin eTSSOP (suffix LP) |
-
Datasheet Download on Jan, 2023
Main Products
Allegro Micro Systems
A33115 Precision TMR Angle Sensor
360° angle sensor that provides high-resolution angular position information.
Current Sensor
Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients.
A31010 Unidirectional Linear Hall-Effect Sensors
Provide a voltage output proportional to the applied magnetic field.
A89506 Full-Bridge PWM Gate Driver
Ideal for DC motors and actuators in conventional, hybrid, and electric vehicles.
Brushless DC Drivers
Engineered to meet market challenges, delivering cost-optimized systems and improved time-to-market.
Brush DC Drivers
Broad portfolio of safe and robust brush DC solutions with both integrated and MOSFET gate drivers.
Stepper Motor Drivers
Delivers quiet, efficient, smooth motion to minimize noise and vibration in stepper motor designs.
Sensor Interface ICs
Allegro’s interface sensor ICs for speed and pressure sensors deliver fast and accurate output ideal for today’s demanding, space-constrained automotive and industrial applications.
Industrial Regulators
Allegro’s multiple-output DC/DC regulators enable smart and robust industrial designs.
專業的高科技電子零件IC代理商
偉度代理經銷品牌具備互補效益，涵蓋國際半導體大廠美商朗格(Allegro)、萬有半導體(AOS)、德國Vincotech、夏普(Sharp)光耦合器等產品線。
我們整合了磁性感測器晶片、馬達驅動晶片、功率元件、功率模組等產品，提供全方位系統設計之硬體基礎架構，
產品服務聚焦於雲端伺服器電源、伺服器散熱風扇馬達驅動、車用電源系統、LED車燈、工業馬達應用等，滿足客戶完整的半導體方案需求。
我們提供完整的解決方案不僅是在技術上的支援，同時也表現在價格上。如果你對我們代理的產品有任何的需求，請不吝與我們討論，我們會給你滿足的答覆。
