ALLEGRO Manuals

This document describes the features and characteristics of the 66 Silicon NPN Epitaxial Planar Transistor, which is suitable for audio and general purpose applications. It includes IC-VCE characteristics, hFE-IC characteristics, hFE-IC temperature characteristics, IC-VBE temperature characteristics, VCE(sat)-IB characteristics, Pc-Ta derating safe operating area, and fT-IE characteristics.

File format: PDF Size:25 KB

2SC3263 is a NPN type transistor produced by Toshiba of Japan. Its maximum collector-emitter reverse voltage is 230V, maximum collector-emitter voltage is 230V, maximum emitter junction voltage is 5V, maximum collector current is 15A, maximum base current is 4A, maximum power consumption is 130W (junction temperature is 25℃), and maximum storage temperature is 150℃.

File format: PDF Size:25 KB

This document describes the Silicon NPN Triple Diffused Planar Transistor with model number 2SD2390, which is suitable for audio, series regulator, and general purpose applications. The transistor has a collector-base voltage of 160V, a collector-emitter voltage of 150V, an emitter-base voltage of 5V, a collector current of 10A, and a base current of 1A. Its electrical characteristics include a maximum collector leakage current of 100µA, a maximum emitter leakage current of 100µA, a minimum collector-emitter breakdown voltage of 150V, a minimum DC current gain of 5000, a maximum collector-emitter saturation voltage of 2.5V, a maximum base-emitter saturation voltage of 3.0V, a typical transition frequency of 55MHz, and a typical current gain of 95.

File format: PDF Size:26 KB

The A3977xED and A3977xLP are complete microstepping motor drivers with built-in translators. They are designed to operate bipolar stepper motors in full-, half-, quarter-, and eighth-step modes, with output drive capability of 35 V and ±2.5 A. The A3977 includes a fixed off-time current regulator that has the ability to operate in slow-, fast-, or mixed-decay modes. This current- decay control scheme results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. The translator is the key to the easy implementation of the A3977. By simply inputting one pulse on the STEP input the motor will take one step (full, half, quarter, or eighth depending on two logic inputs). There are no phase detection, so the motor can be used with or without a Hall sensor driver. The A3977 can be connected to an external microcontroller via a separate I2C port to implement more advanced features.

File format: PDF Size:417 KB

The A4490 is a triple output step-down switching regulator designed to provide the power supply requirements of printers, office automation, industrial, and portable equipment.

File format: PDF Size:407 KB

A6841 is a DABiC-5 8-bit serial input latched sink driver with low-power CMOS logic and bipolar output power drivers, which can be used in a wide variety of peripheral power driver applications.

File format: PDF Size:249 KB

The A3425 is a dual-output-channel, bipolar switch with each channel comprising a separate complete Hall-effect sensor circuit with dedicated Hall element and separate digital output for speed and direction signal processing capability. The A3425 is a highly sensitive, temperature-stable magnetic sensing device, which is ideal for use in ring magnet-based speed and direction systems used in harsh automotive and industrial environments.

File format: PDF Size:485 KB

The A3211 and A3212 integrated circuits are ultra-sensitive, pole independent Hall-effect switches with latched digital output. These sensors are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers.

File format: PDF Size:377 KB

The ACS706ELC-05C is a linear Hall sensor from Allegro for current sensing applications. It has a small footprint, low power consumption, and high accuracy. It is suitable for industrial, automotive, commercial, and communications applications.

File format: PDF Size:514 KB

The data sheet introduces the A3966SA and A3966SLB dual full-bridge PWM motor drivers. These two chips can drive both windings of a two-phase bipolar stepper motor. The internal fixed-frequency, pulse-width modulated (PWM) current-control circuitry can control motor winding current.

File format: PDF Size:249 KB

This datasheet provides A3985-DS data information, including product introduction, features and benefits, technical parameters, etc.

File format: PDF Size:544 KB

A1210-A1214 are Allegro's new generation of Hall effect latching switches, featuring fast power-on time and low-noise operation. The device is produced with BiCMOS technology and programmed after packaging to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress.

File format: PDF Size:444 KB

Designed for pulse width modulated (PWM) current control of DC motors, the A3959 is capable of output currents to ±3 A and operating voltages to 50 V. Internal fixed off-time PWM current- control timing circuitry can be adjusted via control inputs to operate in slow, fast, and mixed current-decay modes. PHASE and ENABLE input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM-control signals. Internal synchronous rectification control circuitry is provided to reduce power dissipation during PWM operation. Internal circuit protection includes thermal shutdown with hysteresis, undervoltage monitoring of supply and charge pump, and crossover-current protection. Special power-up sequencing is not required. The A3959 provides a choice of three power packages, a 24-pin DIP with batwing tabs (package suffix ‘B’), a 24-lead SOIC with four internally-fused pins (package suffix ‘LB’), and a thin (<1.2 mm) 28-pin TSSOP with an exposed thermal pad (suffix ‘LP’). In all cases, the power pins and tabs are at ground potential and need no electrical isolation. Each package is lead (Pb) free, with 100% matte tin leadframes.

File format: PDF Size:535 KB

The A3930 and A3931 are 3-phase brushless DC (BLDC) motor controllers for use with N-channel external power MOSFETs. They incorporate much of the circuitry required to design a cost effective three-phase motor drive system, and have been specifically designed for automotive applications. A key automotive requirement is functionality over a wide input supply range. A unique charge pump regulator provides adequate (>10 V) gate drive for battery voltages down to 7 V, and allows the device to operate with a reduced gate drive at battery voltages down to 5.5 V. Power dissipation in the charge pump is minimized by switching from a voltage doubling mode at low supply voltage to a dropout mode at the nominal running voltage of 14 V. A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel MOSFETs. An internal charge pump for the high-side drive allows for DC (100% duty cycle) operation. Internal fixed-frequency PWM current control circuitry can be used to regulate the maximum load current. The peak load current limit is set by the selection of an input reference voltage and external sensing resistor. The PWM frequency is set by a user-selected external RC timing network. For added flexibility, the PWM input can be used to provide speed and 3930-DS Rev. 2 Features and Benefits ▪ High current 3-phase gate drive for N-channel MOSFETs ▪ Synchronous rectification ▪ Cross-conduction protection ▪ Charge pump and top-off cha

File format: PDF Size:437 KB

The ACS713 is an economical and precise DC current sensor designed for industrial, commercial, and communications systems. It features linear output and low offset, making it suitable for motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.

File format: PDF Size:620 KB

File format: PDF Size:0 KB

allegro microsystems a3230 is the most sensitive hall effect device in the allegro bipolar switch family and is intended for ring-magnet sensing. it has extremely low switchpoint drift, insensitive to physical stress, reverse battery protection and output short circuit protection. the switch features superior high-temperature performance through an allegro patented dynamic offset cancellation that utilizes chopper-stabilization. this method reduces the offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.

File format: PDF Size:479 KB

The A6275ELW is a 8-bit serial input, constant current latched LED driver specifically designed for LED display applications. It contains an 8-bit CMOS shift register, accompanying data latches, and eight npn constant-current sink drivers. Except for package style and allowable package power dissipation, the two devices are identical. The CMOS shift register and latches allow direct interfacing with microprocessor-based systems. With a 5 V logic supply, typical serial data-input rates are up to 20 MHz. The LED drive current is determined by the user’s selection of a single resistor. A CMOS serial data output permits cascade connections in applications requiring additional drive lines. For inter-digit blanking, all output drivers can be disabled with an ENABLE input high. Similar 150 mA output devices are available as the A6277EA and A6277ELW; similar 16-bit devices are available as the A6276EA and A6276ELW. Two package styles are provided for through-hole DIP (suffix A) or surface-mount SOIC (suffix LW). Under normal applications, copper lead frames and low logic-power dissipation allow these devices to sink maximum rated current through all outputs continuously over the operating temperature range (90 mA, 0.9 V drop, +85°C).

File format: PDF Size:202 KB

The SEPW series of LEDs provides a range of high-powered InGaN blue LEDs producing brilliant white light that can be used in general lighting applications, amusement and gaming equipment, and for backlighting TFT displays. Each module combines 8 LEDs in 2 separate channels. Modular design allows the SEPW devices to be easily assembled into string arrays by simply connecting the modules in series. The devices also provide superior color balance throughout the display because of the high density of LEDs that can be achieved. This also minimizes the distance that power and control lines must run between LEDs and from the LEDs to the control electronics. The white thermoplastic case is an innovative Sanken original design with exceptional heat dissipation properties. The white resin compound is especially formulated for superior reflectance and transmittance of the generated light. Enhanced thermal dissipation is achieved through the incorporated heatsink on the bottom of the package. The heatsink can be mated directly to an external radiator through the PCB for superior heat conduction allowing dense placement of modules. The leadframe is plated with silver, providing a highly-reflective surface for the bottom and sides of the emitting area. The terminals and heatsink are also silver-plated.

File format: PDF Size:863 KB

The A6276 is a 16-bit serial-input constant-current latched LED driver specifically designed for LED display applications. It includes a 16-bit CMOS shift register, accompanying data latches, and 16 npn constant-current sink drivers. The device can be directly interfaced with microprocessor-based systems using the CMOS shift register and latches. The LED drive current is determined by the user's selection of a single resistor. Cascade connections are possible using the CMOS serial data output for applications requiring additional drive lines. All output drivers can be disabled for inter-digit blanking by setting the ENABLE input high. Similar 8-bit devices, the A6275EA and A6275ELW, are also available. The A6276 is offered in three package styles: through-hole DIP, surface-mount SOIC, and TSSOP with exposed thermal pad. The DIP package can continuously sink the maximum rated current through all outputs over the operating temperature range. The three packages are electrically identical and share a common terminal number assignment.

File format: PDF Size:343 KB