- RS Stock No.:
- 436-3305P
- Mfr. Part No.:
- UC3825N
- Brand:
- Texas Instruments
19 In stock - FREE next working day delivery available
Added
Price Each (Supplied in a Tube)
£3.98
(exc. VAT)
£4.78
(inc. VAT)
Units | Per unit |
10 - 49 | £3.98 |
50 - 99 | £3.60 |
100 - 249 | £3.42 |
250 + | £3.35 |
- RS Stock No.:
- 436-3305P
- Mfr. Part No.:
- UC3825N
- Brand:
- Texas Instruments
Technical Reference
Legislation and Compliance
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.
The Texas Instruments UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.
Compatible with Voltage or Current Mode Topologies
Practical Operation Switching Frequencies to 1MHz
50ns Propagation Delay to Output
High Current Dual Totem Pole Outputs (1.5A Peak)
Wide Bandwidth Error Amplifier
Fully Latched Logic with Double Pulse Suppression
Pulse-by-Pulse Current Limiting
Soft Start / Max. Duty Cycle Control
Under-Voltage Lockout with Hysteresis
Low Start Up Current (1.1mA)
Practical Operation Switching Frequencies to 1MHz
50ns Propagation Delay to Output
High Current Dual Totem Pole Outputs (1.5A Peak)
Wide Bandwidth Error Amplifier
Fully Latched Logic with Double Pulse Suppression
Pulse-by-Pulse Current Limiting
Soft Start / Max. Duty Cycle Control
Under-Voltage Lockout with Hysteresis
Low Start Up Current (1.1mA)
Flyback Controllers, Texas Instruments
Current-Mode and Voltage-Mode PWM Controller
Primary-Side Regulation
Peak Power Mode
Low Power
Primary-Side Regulation
Peak Power Mode
Low Power
Specifications
Attribute | Value |
---|---|
Maximum Switching Frequency | 1000 kHz |
Output Current | 1.5 A |
Number of Outputs | 2 |
Control Method | Current, Voltage |
Mounting Type | Through Hole |
Fall Time | 30ns |
Rise Time | 30ns |
Package Type | PDIP |
Topology | Boost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull |
Pin Count | 16 |
Dimensions | 19.3 x 6.35 x 4.57mm |
Maximum Duty Cycle | 85% |
PWM Controller Type | Current Mode |
Length | 19.3mm |
Width | 6.35mm |
Height | 4.57mm |
Minimum Operating Temperature | 0 °C |
Maximum Operating Temperature | +70 °C |
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