Description
The A6285 is designed for LED display applications.
This BiCMOS device includes an On/Off shift register, a Dot Correction (DC) shift register, accompanying data latches, and 16 MOS constant-current sink drivers with active pull-ups that
can be enabled or disabled as required by the application.
The CMOS shift registers and latches allow direct interfacing with microprocessor-based systems.
With a 3.3 or 5 V logic supply, typical serial data input rates can reach up to 30 MHz.
The LED drive current level can be set by a single external resistor, selected by the application designer.
A CMOS serial data output permits cascading of multiple devices in applications requiring additional drive lines.
Individual LED light intensity can be adjusted to correct for light intensity variations by using the Dot Correction feature.
Open LED connections can be detected, and then signaled back to the host microprocessor through the serial data output (SDO pin).
The FAULT output flags an LED open circuit (LOD) condition or a thermal shutdown (TSD) condition.
A staggering delay on the load outputs during ON/OFF transitions helps to reduce ground bounce.

Features and Benefits
* 3.0 to 5.5 V logic supply range
* Schmitt trigger inputs for improved noise immunity
* Power-On Reset (POR)
* Up to 80 mA constant-current sinking outputs
* LED open circuit detection (LOD)
* Dot correction (DC) for adjusting LED light intensity on each channel with 7-bit resolution
* Low-power CMOS logic and latches
* High data input rate up to 30 MHz
* Active output pull-ups with enable/disable
* 20 ns typical staggering delay between outputs
* Internal UVLO and thermal shutdown (TSD) circuitry
* Fault output flags for an LED open circuit (LOD) or a thermal shutdown (TSD) condition

A6285EET-T
A6285EETTR-T

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Description
The A3340 Hall effect switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended temperature ranges up to 150°C.
Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature
dependencies, and thermal stress.
The device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output off.
An on-board regulator permits operation with supply voltages of 4.2 to 24 volts.
Two package styles provide a magnetically optimized package for most applications.
Suffix LH is an SOT23W surface mount package and while suffix UA is a three-lead ultramini SIP for through hole mounting.
The A3340 complements the A3240, which offers the same features, but with the opposite output polarity.

Features and Benefits
* Resistant to physical stress
* Superior temperature stability
* Output short-circuit protection
* Operation from unregulated supply
* Reverse battery protection
* Sol id-state reliability
* Small size

A3340ELHLT-T
A3340EUA-T
A3340LLHLT-T
A3340LUA-T

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 Combining logic and power, the UDN2936W-120 provides commutation and drive for three-phase brushless dc motors.
Each of the three outputs are rated at 45 V and ±2 A (±3 A peak), and include internal ground clamp and flyback diodes.
The driver also features internal commutation logic, PWM current control, and thermal shutdown
protection.
The UDN2936W-120 is compatible with single-ended digital or linear Hall effect sensors.
The commutating logic is programmed for 120° electrical separation.
The UDN2936W-120 can replace the original UDN2936W (60° electrical separation) by simply adding an inverter at the H2 input.
Current control is accomplished by sensing current through an external sense resistor and pulse-width modulating the source drivers.
Voltage thresholds and hysteresis can be externally set by the user.
If desired, internal threshold and hysteresis defaults (300 mV, 7.5 percent) can be used.
The UDN2936W-120 also includes braking and direction control.
Internal protection circuitry prevents crossover current when braking or changing direction.
The UDN2936W-120 is also available for operation between -40°C and +85°C.
To order, change the prefix from ‘UDN’ to ‘UDQ’.
For maximum power-handling capability, the UDN2936W-120 is supplied in 12-pin single in-line power-tab package.
An external heat sink may be required for high-current applications.
The tab is at ground potential and needs no insulation.

FEATURES
* 10 V to 45 V Operation
* ±3 A Peak Output Current
* Internal Clamp Diodes
* Internal PWM Current Control
* 120° Commutation Decoding Logic
* Thermal Shutdown Protection
* Compatible with Single-Ended or Differential Hall-Effect Sensors
* Braking and Direction Control

UDQ2936W-120
UDN2936W

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Features and Benefits
▪ Interchangeable with SGS L6219DS
▪ 750 mA Continuous Output Current
▪ 45 V Output Sustaining Voltage
▪ Internal Clamp Diodes
▪ Internal PWM Current Control
▪ Low Output Saturation Voltage
▪ Internal Thermal Shutdown Circuitry
▪ Similar to Dual PBL3717, UC3770

Description
The L6219DS motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two DC motors. Both bridges are capable of sustaining 45 V and include
internal pulse-width modulation (PWM) control of the output current to 750 mA. The outputs have been optimized for a low output saturation voltage drop (less than 1.8 V total source
plus sink at 500 mA).
For PWM current control, the maximum output current is determined by user selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of
0, 33, 67, or 100% of the maximum level. A PHASE input to each bridge determines load current direction.
The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent crossover currents when switching current
direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.
The L6219DS is supplied in a 24-pin surface-mountable SOIC, with 4 internally-fused leads for maximum package power dissipation in the smallest possible construction. It is lead (Pb) free with 100% matte tin leadframe plating.

L6219DS-T
L6219DSTR-T
TAG Driver, dual, MOTOR, PWM

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Features and Benefits
▪ 8 to 25 V input range
▪ Integrated DMOS switch
▪ Adjustable fixed off-time
▪ Adjustable output

Description
 The A8697 is a constant off-time current mode step-down regulator with a wide input voltage range. Regulation voltage is set by external resistors, to output voltages as low as 0.8 V.
The A8697 includes an integrated power DMOS switch to reduce the total solution footprint. It also features internal compensation, allowing users to design stable regulators with
minimal design efforts.

 The off-time can be set with an external resistor, allowing flexibility in inductor selection. Additionally, the A8697 has a logic level enable pin which can shut the device down and
put it into a low quiescent current mode for power sensitive applications.

 The A8697 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ). Applications include:
▪ Applications with 8 to 25 V input
▪ Consumer electronics, networking equipment
▪ 12 V lighter-powered applications (portable DVD, etc.)
▪ Point of Sale (POS) applications

A8697ELJTR-T
A8697ELJ-T

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The STR-A6259H is a 100 kHz PWM topology (with ±5% frequency jittering for minimum EMI) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET.

 Covering the power range from below 17 watts for a 230 VAC input, or to 13 watts for a universal (85 to 264 VAC) input, this device can be used in a wide range of applications,
from DVD players and VCR player/recorders to ac adapters for cellular phones and digital cameras. An auto-burst standby function reduces power consumption at light load, while multiple protections, including the avalanche-energy guaranteed MOSFET, provide high reliability of system design.

 Cycle-by-cycle current limiting, undervoltage lockout with hysteresis, overvoltage protection, and thermal shutdown protect the power supply during the normal overload and fault conditions.
Overvoltage protection and thermal shutdown are latched after a short delay. The latch may be reset by cycling the input supply.

 Low start-up current and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features. It is provided in an 8-pin mini-DIP plastic package with pin 6 removed. The leadframe plating is pure Sb, and the package complies with RoHS.

FEATURES AND BENEFITS
•100 kHz PWM with ±5% frequency jittering for EMI noise filtering cost reduction
•Rugged 650 V avalanche-rated MOSFET:
- Simplified surge absorption
- No VDSS derating required
•Low RDS(on) : 6 Ω maximum
•Auto-burst mode for stand-by operation or light loads; less transformer audible noise
•Built-in leading edge blanking
•Soft start and low start-up current; start-up circuit disabled in operation
•Auto-burst stand-by (intermittent operation) input power <0.1 W at no load
•Built-in constant-voltage/constant current (CV/CC)
•Multiple protections:
- Pulse-by-pulse overcurrent protection (OCP)
- Overload protection (OLP) with auto restart
- Latching overvoltage protection (OVP)
- Undervoltage lockout (UVLO) with hysteresis
- Latching thermal shutdown (TSD)

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 Designed for pulse-width modulated (PWM) current control of dc motors, the A3959SB, A3959SLB, and A3959SLP are 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 A3959SB/SLB/SLP is a choice of three power packages, a 24-pin plastic DIP with a copper batwing tab (package suffix ‘B’), a 24-lead plastic SOIC with a copper batwing tab (package suffix ‘LB’), and a thin (<1.2 mm) 28-lead plastic TSSOP with an exposed thermal
pad (suffix ‘LP’). In all cases, the power tab is at ground potential and needs no electrical isolation. Each package is available in a leadfree version (100% matte tin leadframe).

FEATURES
* ±3 A, 50 V Output Rating
* Low rDS(on) Outputs (270 mΩ, Typical)
* Mixed, Fast, and Slow Current-Decay Modes
* Synchronous Rectification for Low Power Dissipation
* Internal UVLO and Thermal-Shutdown Circuitry
* Crossover-Current Protection
* Internal Oscillator for Digital PWM Timing

A3959SB
A3959SB-T
A3959SLB
A3959SLB-T
A3959SLP
A3959SLP-T

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 The Allegro ACS706 family of current sensors provides economical and precise solutions for current sensing in industrial, automotive, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.

 The device consists of a precision, low-offset linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.

 The output of the device has a positive slope (>VCC / 2) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. The internal resistance of this conductive path is typically 1.5 mΩ, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 3× overcurrent conditions. The terminals of the conductive path are electrically isolated from the sensor leads (pins 5 through 8). This allows the ACS706 family of sensors to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

 The ACS706 is provided in a small, surface mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the flip-chip uses high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.

Features and Benefits
• Small footprint, low-profile SOIC8 package
• 1.5 mΩ internal conductor resistance
• Excellent replacement for sense resistors
• 1600 VRMS minimum isolation voltage between pins 1-4 and 5-8
• 4.5 to 5.5 V, single supply operation
• 50 kHz bandwidth
• 100 mV/A output sensitivity and 20 A dynamic range
• Output voltage proportional to ac and dc currents
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Near-zero magnetic hysteresis
• Ratiometric output from supply voltage

ACS706ELC-20A

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 The STR-S5707 and STR-S5708 are specifically designed to meet requirement for increased integration and reliability in off-line quasiresonant flyback converters with indirect feedback. Each device incorporates the primary control and proportional drive circuit with a third generation high-voltage bipolar switching transistor. Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture. Local control circuit decoupling and layout are optimized within each device.
 
 Cycle-by-cycle current limiting, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect these devices during all normal and overload conditions. Over-voltage protection and thermal shutdown are latched after a short delay. A primary-side error amplifier with reference is included to facilitate regulation from an auxiliary or bias winding of the power transformer. A versatile triple-level inhibit circuit includes the OFF time synchronization required to establish quasi-resonant operation. The inhibit function has also been expanded to initiate operation in stand-by mode in which the power supply delivers a small fraction of the steady-state output power.
 
 The dual requirements of dielectric isolation and low transient thermal impedance and steady state thermal resistance are satisfied in an overmolded single-in-line power package. Proven in substantial volumes, this device and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliability growth and integration.

FEATURES
* Quasi-Resonant Operation for Low EMI and High Efficiency
* Low-Power Output Standby Mode
* Indirect Feedback from Auxiliary Winding Reduces External Component Count
* Pulse-by-Pulse Over-Current Protection
* Latched Over-Voltage and Thermal Protection
* Third-Generation Switching Transistor with Proportional Drive
* Maximum ON Time and Off Time Set During Manufacture
* Internal Under-Voltage Lockout with Hysteresis
* Over-Molded SIP with Integral Isolated Heat Spreader

STR-S5707 STR-S5708

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