SMD 3524 IC SG3524 IC KA3524 PWM 3524 Regulating Pulse Width Modulator IC PWM 16 Pin Leads SMD-16 Dual In Line Package Chip IC

This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator. Included in a 16-pin dual-in-line package is the voltage reference, error amplifier, oscillator, pulse-width modulator, pulse steering flip-flop, dual alternating output switches and current-limiting and shut-down circuitry. This device can be used for switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformer less voltage double and polarity converters, as well as other power control applications. The SG3524 is designed for commercial applications of 0°C to +70°C.

Features:

• Supply Voltage: 8V to 40V
• Output Voltage: 4.6 V to 5.4 V
• Output Current: 50 mA
• Number of Outputs: 2 Output
• Topology: Boost, Buck, Fly-back, Forward, Push-Pull
• Switching Frequency: 722 kHz
• Duty Cycle – Max: 45 %
• Fall Time: 100 ns
• Rise Time: 200 ns
• Available in 16-pin PDIP, PDSO, and SOIC Packages

Specification:

• Desktop PCs
• Microwave Ovens
• Server PSUs
• Solar Micro-Inverters
• Washing Machines: Low-End and High-End
• E-Bikes
• Power: Telecom/Server AC/DC Supplies:
• Smoke Detectors
• Solar Power Inverters

Package Include:

• 1 x SMD 3524 SG3524 KA3524 3524 Regulating Pulse Width Modulator IC PWM 16 Pin Leads SMD-16 Dual In Line Package Chip IC

UC3846P UC3846 UC 3846 Current Mode PWM Controller Integrated Circuit DIP-16 16 Pin Dual In Line Package Chip Electrical Circuitry & Parts

Features:

• Automatic Feed Forward Compensation
• Automatic Symmetry Correction
• Enhanced Load Response Characteristics
• Parallel Operation Capability
• Under Voltage Lockout

Package Include:

• 1 x UC3846 Current Mode PWM Controller

UC3845P UC3845 UC 3845 Current Mode PWM Controller Integrated Circuit DIP-8 8 Pin Dual In Line Package Chip Electrical Circuitry & Parts

The UC3842/UC3843/UC3844/UC3845 are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET. The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle.

Features:

• Low Start up Current
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency up to 500KHz

Package Include:

• 1 x UC3845 Current Mode PWM Controller

UC3842P UC3842 UC 3842 Current Mode PWM Controller Integrated Circuit DIP-8 8 Pin Leads Dual In Line Package Chip

The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.

Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC1842 and UC1844 have UVLO thresholds of 16 VON and 10 VOFF, ideally suited to off-line applications. The corresponding thresholds for the UC1843 and UC1845 are 8.4 V and 7.6 V. The UC1842 and UC1843 can operate to duty cycles approaching 100%. A range of zero to 50% is obtained by the UC1844 and UC1845 by the addition of an internal toggle flip flop which blanks the output off every other clock cycle.

Features:

The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state. Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC3843 can operate to duty cycles approaching 100%.The UC3843 control IC provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under voltage lockout featuring start-up current less than 1mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current.

Features:

• Optimized for OFF-LINE and DC to DC converters
• Low Start-Up Current (<1mA)
• Automatic Feed Forward Compensation
• Pulse-by-pulse current limiting
• Enhanced load response characteristics
• Under-voltage lockout with hysteresis
• Double pulse suppression
• High current totem pole output
• Internally trimmed bandgap reference

UC3843 Specifications

• Current-Mode PWM controller
• Operating Voltage: 7.0V to 8.2V
• Output pin current: 1A
• Analog input range: -0.3 to 6.3V
• Oscillation Frequency: 52 Typically
• Gain: 3V
• Maximum source current: 22mA
• Low Output Voltage: 0.08V
• High Output Voltage: 13.5V

Where to use the UC3843 PWM Controller IC

The UC3843 IC is a current Mode PWM Controller, meaning it can be used to provide a constant current by varying the output voltage to the load. While building Switch mode supplies with feedback there are two modes of control that is commonly used, one is voltage mode control where the output voltage will kept constant irrespective of the current (CV mode) and the other is current mode control where the output current will be constant (C mode) irrespective of the voltage.

The UC3843 can be used to regulate or limit current in application like SMPS, RPS, DC-DC Converters, Line voltage regulators, etc. So if you are looking for an IC to  produce PWM signals for controlling a power switch based on the current flowing through the circuit then this IC might be the right choice for you.

How o use UC3843 IC

Although the IC performs a sophisticated job, using it in a circuit is fairly simple and can be done with minimum number if external components which make this IC to be a preferable choice among designers. A sample application circuit of this IC is shown below.

The IC has an under voltage protection, so care should be taken to make sure that it has an operating voltage between 7V to 8.2V. The output pin of the IC is connected to the gate driver circuit of the Power switch which is to be switched. The output pin can source upto 1A ad hence a current limiting resistor will be required. The VFB (Voltage feedback) pin acts as a feedback based on which the PWM signal is controlled. A shunt resistor is used to monitor the change in current in the circuit and then this difference voltage across the shunt is provided to the feedback pin.

The IC also has an internal oscillator which can be configured using by connecting the right value of capacitor and resistor to the pin Rt/Ct. The Datasheet recommends a value of between 470pf to 4.7nf and for the resistor a value between 5k to 100k. Refer the datasheet at the end of the page to know more about this IC. Also check out the Layout diagram at the bottom of the datasheet for a quick start. A more detailed application circuit is shown below.

Applications

• SMPS (Switch mode Power Supplies) circuits
• DC-DC converter circuits
• Electronics power supply
• Battery drain circuit
• Load machines

Package Include:

• 1 x UC3843 Current-Mode PWM Controller

3525 PWM IC SG3525 KA3525 Regulating Pulse Width Modulator IC PWM 16 Pin Leads DIP-16 Dual In Line Package Chip

The KA3525A is a monolithic integrated circuit that Included all of the control circuit necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, under-voltage lockout, soft start circuit, and output drivers in the chip.

Features:

• Maximum Supply Voltage:40V
• Operating Temperature:0~+70°C
• Maximum Power Dissipation:100mW

Package Include:

• 1 x SG3525 KA3525 3525 Regulating Pulse Width Modulator IC PWM 16 Pin DIP-16 Dual In Line Package Chip Electrical Circuitry & Parts

3524 SG3524 KA3524 3524 Regulating Pulse Width Modulator IC PWM 16 Pin Leads DIP-16 Dual In Line Package Chip IC

This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator. Included in a 16-pin dual-in-line package is the voltage reference, error amplifier, oscillator, pulse-width modulator, pulse steering flip-flop, dual alternating output switches and current-limiting and shut-down circuitry. This device can be used for switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformer less voltage double and polarity converters, as well as other power control applications. The SG3524 is designed for commercial applications of 0°C to +70°C.

Features:

• Supply Voltage: 8V to 40V
• Output Voltage: 4.6 V to 5.4 V
• Output Current: 50 mA
• Number of Outputs: 2 Output
• Topology: Boost, Buck, Fly-back, Forward, Push-Pull
• Switching Frequency: 722 kHz
• Duty Cycle – Max: 45 %
• Fall Time: 100 ns
• Rise Time: 200 ns
• Available in 16-pin PDIP, PDSO, and SOIC Packages

Specification:

• Desktop PCs
• Microwave Ovens
• Server PSUs
• Solar Micro-Inverters
• Washing Machines: Low-End and High-End
• E-Bikes
• Power: Telecom/Server AC/DC Supplies:
• Smoke Detectors
• Solar Power Inverters

Package Include:

• 1 x 3524 PWM SG3524 Regulating Pulse Width Modulator IC DIP 16 Pin

Servo Motor Driver PCA9685 16 Channel 12 Bit PWM IIC I2C Interface LED Controller Module For Arduino Raspberry Pi

Package Includes:

• 1 x Servo Motor Driver PCA9685 16 Channel 12 Bit PWM IIC I2C Interface LED Controller

Description: DC Motor Speed ​​Controller Regulator DC 12V-40V 10A PWM 

PWM 12-40V DC Motor Speed ​​Controller Regulator DC 12V-40V 10A PWM DC Motor Adjustable Speed ​​Control Switches Craft Electronic PCB Board Module

Using imported high-power FET, the load current up to 10AWith fuse, to prevent short-circuit high current, causing burnout protection With reverse power protection, to prevent damage to the module when the power is reversed Original 63V / 1000uF large capacitor, to ensure the stability of the module Potentiometers are equipped with nuts, you can use without adding other components.

Features:

• Using imported high-power FET, the load current up to 10A
• With fuse, to prevent short-circuit high current, causing burnout protection
• With reverse power protection, to prevent damage to the module when the power is reversed
• Original 63V / 1000uF large capacitor, to ensure the stability of the module
• Potentiometers are equipped with nuts, you can use without adding other components

Important: 

• This is DC motor controller, please make sure the input voltage is from DC power, do not use home 220V AC, otherwise it will burn out.
• The DC Motor Speed Controller allows controlling direction of a DC motor using a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully adjustable from 10%-100%.
• The motor speed controller can provide a continuous current of 8A to your DC motor or other DC load.

Specification:

• 100% brand new and high quality.
• Input supply voltage: DC 12V-40V
• The maximum output power: 400W
• The maximum continuous output current :8A
• The overload and short circuit protecting current is 10A
• Static Current:0.02 A ( Standby )
• PWM frequency: 13kHz
• Duty Cycle adjustable: 10%-100%
• The operation environment temperature:-20℃-125℃
• Size: 60x55x28mm(approx.)
• Net weight: 69g

Note:

• This can NOT be used to the BRUSHLESS motor.
• The controller is NOT reverse-polarity protected and will be damaged if connect the supply voltage with wrong polarity.
• Double check all connections before applying power and always turn off the power supply before making any wiring changes.

Package Included:

• 1 x DC Motor Speed ​​Controller Regulator DC 12V-40V 10A PWM