UC3838ADW MAGNETIC AMPLIFIER CONTROLLER
multi emitter transistor
,silicon power transistors
Magnetic Amplifier Controller
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC . . . . . . . . . . . 40V
Magnetic Amp. Source Voltage, VM . . . . . . . . . . . . . . 40V
Reset Output Voltage, VR . . . . . . . . . . . . . . . . . . . . –120V
Total Current Source Voltage, VM - VR . . . . . . . . . . –140V
Amplifier Input Range . . . . . . . . . . . . . .. –0.3V to VCC
Reset Input Current, IDR . . . . . . . . . . . . . . . . . . . . . . . . . –10mA Power Dissipation at TA = 25°C
Q, N, DP Package . . . . . . 2W
J, L Package. . . . . . . . .. . 1W
Power Dissipation at T (leads/case) = 25°C
Q, N, DP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5W
J, L Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2W Operating Temperature Range. . . . . . . . . . . . –55°C to +125°C Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . . 300°C
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. With the UC1838A, only the magnetic amplifier coil, three diodes, and an output L-C filter are necessary to implement a complete closed-loop regulator.
The UC1838A contains a precision 2.5V reference, two uncommitted high-gain op amps and a high-gain PNP-equivalent current source which can deliver up to 100mA of magnetic amplifier reset current and with –120 volt capability.
TYPICAL APPLICATION
STOCK LIST
| 2SK2508 | 3000 | TOSHIBA | 14+ | TO-220F |
| AX88796BLF | 2170 | ASIX | 15+ | QFP |
| DALC208SC6 | 1475 | ST | 15+ | SOT23-6 |
| AP1509-50SG-13 | 1600 | DIODES | 16+ | SOP-8 |
| IPD09N03LAG | 1780 | 15+ | TO-252 | |
| AD5344BRUZ | 2450 | AD | 14+ | TSSOP |
| BQ24072RGTR | 1560 | TI | 15+ | QFN16 |
| AT45DB081D-SSU | 2300 | ATMEL | 15+ | SOP-8 |
| AT25DF321A-SH-T | 2300 | ATMEL | 15+ | SOP |
| HCPL-354-00DE | 3460 | AVAGO | 13+ | SOP |
| DF01S | 850 | FSC | 15+ | SOP |
| B240-13-F | 2300 | DIODES | 14+ | SMB |
| IRF7201TRPBF | 1500 | IR | 16+ | SOP |
| AD8092ARZ | 2450 | AD | 15+ | SOP |
| 1N4148WT-NL | 9000 | FSC | 15+ | SOD523 |
| IS42S16320B-7TLI | 650 | ISSI | 12+ | TSOP |
| AOZ1024DI | 1600 | AOS | 16+ | QFN8 |
| 74LVC541APW | 7500 | 15+ | TSSOP | |
| 2450BL15B200E | 3000 | JOHANSON | 15+ | SMD |
| HT24LC64 | 2460 | HOLTEK | 14+ | MSOP-8 |
| 80CNQ045APBF | 1200 | VISHAY | 15+ | D61-8 |
| 2N6491G | 3000 | ON | 15+ | TO-220 |
| BS107ARL1G | 1560 | ON | 15+ | TO-92 |
| FOD617D300 | 2200 | FSC | 14+ | DIP-4 |
| FODM3023 | 2200 | FAIRCHILD | 16+ | SOP-4 |
| 74LVC1G3157GV | 7500 | 15+ | SOT-457 | |
| 74HC540D | 7500 | 15+ | SOP | |
| 74LVC1G157GV | 7500 | 16+ | SOT-163 | |
| HCF4069UM013TR | 3460 | ST | 16+ | SOP |
| ADS1256IDBR | 2000 | TI | 16+ | SSOP-28 |
| EL4543IUZ | 2940 | INTERSIL | 15+ | SSOP |
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK
TNY274GN NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 2A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
TNY274GN NEW AND ORIGINAL STOCK |
Converter Offline Flyback Topology 132kHz SMD-8C
|