Texas Instruments UC3843AN

Name: UC3843AN
Brand: Texas Instruments
SKU: 3752985-UC3843AN
Availability: InStock
Rating: 5 (1 reviews)

Part Number:: UC3843AN

Manufacturer:: Texas Instruments

Ventron No:: 3752985-UC3843AN

Description:: 30-V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0°C to 70°C

ECAD Model:

Datasheet:: uc3843a

Specifications

Texas Instruments UC3843AN technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UC3843AN.

Lifecycle Status
OBSOLETE (Last Updated: 1 week ago)
Mount
Through Hole
Mounting Type
Through Hole
Package / Case
8-DIP (0.300, 7.62mm)
Number of Pins
8
Weight
851mg
Operating Temperature
0°C~70°C TA
Packaging
Tube
Published
2000
JESD-609 Code
e0
Pbfree Code
no
Part Status
Obsolete
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Number of Terminations
8
ECCN Code
EAR99
Terminal Finish
Tin/Lead (Sn/Pb)
Subcategory
Switching Regulator or Controllers
Technology
BIPOLAR
Terminal Position
DUAL
Terminal Pitch
2.54mm
Frequency
60kHz
Base Part Number
UC384*A
Function
Step-Up, Step-Up/Step-Down
Number of Outputs
1
Output Voltage
5.1V
Output Type
Transistor Driver
Input Voltage-Nom
15V
Analog IC - Other Type
SWITCHING CONTROLLER
Operating Supply Current
17mA
Nominal Supply Current
17mA
Output Configuration
Positive
Output Current
1A
Voltage - Supply (Vcc/Vdd)
8.4V~30V
Control Features
Frequency Control
Topology
Boost, Flyback
Control Mode
CURRENT-MODE
Frequency - Switching
Up to 500kHz
Input Voltage (Max)
30V
Control Technique
PULSE WIDTH MODULATION
Rise Time
40ns
Synchronous Rectifier
No
Fall Time (Typ)
40 ns
Switcher Configuration
SINGLE
Max Duty Cycle
100 %
Duty Cycle (Max)
96%
Height Seated (Max)
4.45mm
Width
7.62mm
RoHS Status
Non-RoHS Compliant
Lead Free
Lead Free

Description

UC3843AN Description
The UC384*A is a high-quality product designed for boosting and flyback applications. With a through hole mount and 8 pins, this product offers easy installation and secure connectivity. The terminal finish of tin/lead (Sn/Pb) ensures reliable and durable performance. The UC384*A is equipped with a current-mode control mode, allowing for precise and efficient regulation. With a switching frequency of up to 500kHz and a rise time of 40ns, this product offers fast and accurate response. It has a maximum seated height of 4.45mm and a width of 7.62mm, making it compact and suitable for various space-constrained applications. Trust the UC384*A for your boosting and flyback needs.

UC3843AN Features
Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle?By?Cycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
Direct Interface with ON Semiconductor SENSEFET? Products
Pb?Free Packages are Available

UC3843AN Applications
General-purpose amplifier
Switching applications
Power management
Industrial

UC3843AN More Descriptions

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8
ADVANCED PWM CONTROLLER, 3843, DIP8; Controller Type:PWM; Voltage, Input Max:25V; Output Current Max:4A; Output Type:Totem Pole; Input Current:11mA; Output Energy per Cycle:5µJ; Frequency:500kHz; Power Dissipation:1W; Voltage, Supply
The UC3823A and UC3823B and the UC3825A andUC3825B family of PWM controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth productis 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 t,A, is ideal for off-line applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the startup current specification. In addition each output is capable of2-A peak currents during transitions.

Certification