KA3501

Name: KA3501
Brand: Onsemi
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

SPECIALTY ANALOG CIRCUIT, PDIP14, DIP-14

3,276 Effective Inventory

KA3501

Effective Inventory3,276

SPECIALTY ANALOG CIRCUIT, PDIP14, DIP-14

Manufacturer Part # : KA3501
Package/Case: TO-220
Brand: Onsemi
Product Categories : Power Supply Controllers, Monitors

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Initiate the application within 90 days from the shipment date.

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KA3501 DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.214	$0.21
200	$0.083	$16.60
500	$0.080	$40.00
1000	$0.079	$79.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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KA3501 Details

The KA3501 is a controller IC for SMPS applications, which integrates control and protection functions into a single package. This device is designed for controlling off-line converters, featuring a wide input voltage range, internal oscillator for minimum external parts count, overvoltage protection, soft start function for reducing startup stress, short circuit protection, and wide operating frequency range. It is housed in a DIP14 package, making it suitable for compact circuit designs.

Key Features

Wide input voltage range (85V to 265V)
Internal oscillator for minimum external parts count
Overvoltage protection for safe operation
Soft start function for reducing startup stress
Short circuit protection for reliable operation
Wide operating frequency range (50kHz to 200kHz)

Applications

The KA3501 is suitable for a wide range of applications, including:

Off-line power supplies
Switch-mode power converters
DC-DC converters
AC-DC converters

Where to Use

The KA3501 is designed for use in a variety of applications, including:

Industrial control systems
Aerospace and defense systems
Medical devices
Automotive systems

How to Use

To use the KA3501, follow these steps:

Connect the VCC pin to a suitable power supply voltage.
Connect the GND pin to ground.
Apply an input signal to the A and B pins.
Monitor the output at the OUT pin.

Application Circuit

The application circuit diagram for the KA3501 illustrates how to connect the device to a typical SMPS application. It includes connections for power supply, ground, and input/output signals, ensuring proper operation and reliable performance.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

UCC28051: A similar controller IC from Texas Instruments offering comparable features and performance.
LTC3781: An alternative controller IC from Linear Technology with equivalent functionality.

Complementary

The KA3501 can be complemented by the UCC28052, which offers additional features such as higher current handling and enhanced protection capabilities, suitable for more demanding SMPS applications.

When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Pbfree Code	Yes	Part Life Cycle Code	Active
Part Package Code	DIP	Pin Count !	14
Reach Compliance Code		Additional Feature !	ALSO REQUIRES AN ADDITIONAL SUPPLY OF 5V
Analog IC - Other Type	ANALOG CIRCUIT	JESD-30 Code	R-PDIP-T14
JESD-609 Code	e3	Length	19.4 mm
Moisture Sensitivity Level	NOT APPLICABLE	Number of Functions	1
Number of Terminals	14	Operating Temperature-Max	70 °C
Operating Temperature-Min		Package Body Material	PLASTIC/EPOXY
Package Code	DIP	Package Shape	RECTANGULAR
Package Style	IN-LINE	Peak Reflow Temperature (Cel)	NOT APPLICABLE
Qualification Status !	COMMERCIAL	Seated Height-Max	5.08 mm
Supply Voltage-Max (Vsup)	32 V	Supply Voltage-Min (Vsup)	5 V
Supply Voltage-Nom (Vsup)	20 V	Surface Mount !	NO
Temperature Grade !	COMMERCIAL	Terminal Finish	MATTE TIN
Terminal Form !	THROUGH-HOLE	Terminal Pitch !	2.54 mm
Terminal Position	DUAL	Time@Peak Reflow Temperature-Max (s)	NOT APPLICABLE
Width	7.62 mm

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification KA3501 PDF Download

FAQs

What is KA3501?

The KA3501 is a pulse width modulation (PWM) controller IC designed for controlling power supplies and voltage regulators. It is commonly used in switch-mode power supply applications to regulate and control the output voltage efficiently.

How Does KA3501 Work?

The KA3501 works by producing a pulse-width modulated signal that controls the switching of power devices like MOSFETs in a power supply circuit. By adjusting the width of the pulses, the duty cycle is changed, regulating the output voltage. It allows for efficient energy transfer and voltage regulation in power supply designs.

How Many Pins does KA3501 have and What are the Functions of the Pinout Configuration?

The KA3501 is typically available in an 8-pin DIP (Dual Inline Package) or SOP (Small Outline Package). The pinout configuration includes:

VCC: Power supply pin.
GND: Ground pin.
COMP: Error amplifier output pin.
RT/CT: Oscillator timing components pin.
OSC OUT: Oscillator output pin.
FB: Feedback pin for voltage regulation.
OUT: Switching output pin for power devices.
SD: Shutdown pin for enabling or disabling the device.

What are the Pros and Cons of KA3501?

Pros:

Efficient Power Regulation: Enables efficient power supply voltage control through PWM.
Compact Design: Comes in a small package suitable for space-constrained applications.
Wide Operating Voltage Range: Works with a wide range of input voltages for versatility.
Simple Implementation: Easy to integrate into power supply designs for various applications.

Cons:

No Internal Voltage Reference: Requires external components for precise voltage regulation.
External Components Needed: May need additional components for specific power supply designs.
Limited Protection Features: Some protection features may need to be implemented externally.

Are There Any Equivalents/Alternatives to KA3501 for Recommendation?

Similar PWM controllers to the KA3501 include the SG3525 from STMicroelectronics and the TL494 from Texas Instruments.
Alternatives to the KA3501 are the UC3842 from Texas Instruments and the LM5039 from Texas Instruments.