Texas Instruments UC3825N, Dual PWM Controller, 1000 kHz 16-Pin, PDIP

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Verpakkingsopties
RS-stocknr.:
436-3305
Fabrikantnummer:
UC3825N
Fabrikant:
Texas Instruments
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Merk

Texas Instruments

Maximum Switching Frequency

1000 kHz

Output Current

1.5 A

Number of Outputs

2

Control Method

Current, Voltage

Fall Time

30ns

Mounting Type

Through Hole

Rise Time

30ns

Package Type

PDIP

Topology

Boost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull

Pin Count

16

Maximum Duty Cycle

85%

Dimensions

19.3 x 6.35 x 4.57mm

Length

19.3mm

PWM Controller Type

Current Mode

Width

6.35mm

Height

4.57mm

Maximum Operating Temperature

+70 °C

Minimum Operating Temperature

0 °C

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)


Flyback Controllers, Texas Instruments


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

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