Unitrode UC2838A
the UC2838A, and 0°C to +70°C for the UC3838A, VCC = 20V, VM = 5V, TA = TJ.- Max Operating Temp : 85°C
- Min Operating Temp : -20°C
Source:
Octopart
| Part No. | UC2838A |
|---|---|
| Datasheet | UC2838A Download |
| Manufacturer |  Unitrode |
| Description | Magnetic Amplifier Controller |
| Buy | Stock & Price |
FEATURES
● Independent 1% Reference● Two Uncommitted, Identical Operational Amplifiers
● 100mA Reset Current Source with –120V Capability
● 5V to 40V Analog Operation
● 5W DIL Package
DESCRIPTION
The UC1838A family of magnetic amplifier controllers contains the circuitry to generate and amplify a low-level analog error signal along with a high voltage-compliant current source. This source will provide the reset current necessary to enable a magnetic amplifier to regulate and control a power supply output in the range of 2A to 20A. By controlling the reset current to a magnetic amplifier, this device will define the amount of volt-seconds the magnetic amplifier will block before switching to the conducting state. Magnetic amplifiers are ideal for post-regulators for multiple-output power supplies where each output can be independently controlled with efficiencies up to 99%. With a square or pulse-width-modulated input voltage, a magnetic amplifier will block a portion of this input waveform, allowing just enough to pass to provide a regulated output.
