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

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RS Stock No.:
Mfr. Part No.:
Texas Instruments
UnitsPer unitPer Pack*
5 - 20£1.86£9.30
25 - 95£1.604£8.02
100 - 245£1.402£7.01
250 - 495£1.312£6.56
500 +£1.24£6.20
*price indicative

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

Number of PWM Outputs2
Control MethodVoltage
TopologyBoost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
Rise Time100ns
Fall Time50ns
Maximum Switching Frequency400 kHz
Mounting TypeThrough Hole
Package TypePDIP
Pin Count16
Maximum Duty Cycle49%
Output Current400 mA
On/Off PinYes
Synchronous PinYes
Minimum Operating Temperature0 °C
Typical Operating Supply Voltage4.5 → 35 V
Dimensions19.3 x 6.35 x 4.57mm
Maximum Operating Temperature+70 °C