Texas Instruments UC3525AN, Dual PWM Voltage Mode Controller, 400 mA, 400 kHz 16-Pin, PDIP

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TH
Product Details

Flyback Controller, Voltage Control, Texas Instruments

The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler.

Flyback Controllers, Texas Instruments

Current-Mode and Voltage-Mode PWM Controller
Primary-Side Regulation
Peak Power Mode
Low Power

Specifications
Attribute Value
Number of PWM Outputs 2
Control Method Voltage
Topology Boost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
Rise Time 100ns
Fall Time 50ns
Maximum Switching Frequency 400 kHz
Mounting Type Through Hole
Package Type PDIP
Pin Count 16
Maximum Duty Cycle 49%
Output Current 400 mA
On/Off Pin Yes
Synchronous Pin Yes
Length 19.3mm
Maximum Operating Temperature +70 °C
Width 6.35mm
Minimum Operating Temperature 0 °C
Typical Operating Supply Voltage 4.5 to 35 V
Dimensions 19.3 x 6.35 x 4.57mm
Height 4.57mm
1325 In stock for FREE next working day delivery
Price Each (In a Tube of 25)
£ 1.555
(exc. VAT)
£ 1.866
(inc. VAT)
Units
Per unit
Per Tube*
25 - 100
£1.555
£38.875
125 - 225
£1.246
£31.15
250 +
£1.122
£28.05
*price indicative
Due to temporarily constrained supply, RS is unable to accept backorders at this time
Related Products
The range of highly integrated high-efficiency switching voltage ...
Description:
The range of highly integrated high-efficiency switching voltage regulators from Texas Instruments includes Step-up (Boost), Step-down (Buck), Step-up/down (Boost/Buck) and Inverting types providing efficient solutions for every DC Voltage Regulator application.
Pulse-width modulator (PWM) controllers can support isolated and ...
Description:
Pulse-width modulator (PWM) controllers can support isolated and non-isolated AC-DC and DC-DC switch mode power supplies. They are based on the most popular topologies in both single-ended, such as fly-back, forward or quasi-resonant controllers, and double-ended configurations, such as asymmetrical half-bridge, for Switch Mode Power Supplies (SMPS).The PMW controllers also ...
Resonant controllers include primary controllers for half-bridge topologies, ...
Description:
Resonant controllers include primary controllers for half-bridge topologies, designed to provide high efficiency under any load conditions, as well as high noise immunity. They implement a high voltage half-bridge driver that directly drives two power MOSFETs. The resonant controllers have a dedicated timing section to set soft start duration and ...
A range of integrated Step-down (Buck) DC-DC controllers ...
Description:
A range of integrated Step-down (Buck) DC-DC controllers for applications where external power MOSFETs are used to implement complete switching regulator designs.