Datasheet Texas Instruments UC1845AJ
| Manufacturer | Texas Instruments |
| Series | UC1845A |
| Part Number | UC1845AJ |
Current Mode PWM Controller 8-CDIP -55 to 125
Datasheets
UCx84xA Current-Mode PWM Controller datasheet
PDF, 3.2 Mb, Revision: F, File published: Jan 6, 2017
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 8 |
| Package Type | JG |
| Industry STD Term | CDIP |
| JEDEC Code | R-GDIP-T |
| Package QTY | 1 |
| Carrier | TUBE |
| Device Marking | UC1845AJ |
| Width (mm) | 6.67 |
| Length (mm) | 9.6 |
| Thickness (mm) | 4.57 |
| Pitch (mm) | 2.54 |
| Max Height (mm) | 5.08 |
| Mechanical Data | Download |
Parametrics
| Control Method | Current |
| Duty Cycle(Max) | 50 % |
| Frequency(Max) | 500 kHz |
| Operating Temperature Range | -55 to 125 C |
| Package Group | CDIP |
| Package Size: mm2:W x L | See datasheet (CDIP) PKG |
| Rating | Military |
| Special Features | Error Amplifier,Multi-topology |
| Topology | Boost,Flyback,Forward |
| UVLO Thresholds On/Off | 8.4/7.6 V |
| Vin(Max) | 30 V |
| Vin(Min) | 7.6 V |
Eco Plan
| RoHS | See ti.com |
Application Notes
- DN-30 Programmable Electronic Circuit BreakerPDF, 164 Kb, File published: Sep 5, 1999
This design note describes a programmable electronic circuit breaker that uses the UC3843A control IC to facilitate a high-speed turnoff following an overcurrent condition. This low-cost industry-standard IC contains the required protection features and drive capability in a single 8-pin device. - DN-29 UC3842A Family - Frequency Foldback Technique Provides ProtectionPDF, 51 Kb, File published: Sep 5, 1999
Excessive power dissipation can occur in switch-mode power supplies during startup and overload conditions. Many sophisticated PWM controllers provide the means for protection against these problems; however simple low-cost controllers require additional circuitry. This design note describes a circuit that uses only one additional resistor and transistor to enhance the performance of the UC3842A - DN-26 UC3842A Low-Cost Start-up and Fault Protection CircuitPDF, 155 Kb, File published: Sep 5, 1999
The UC1842/3/4/5 family of control ICs can implement off-line or DC-to-DC fixed-frequency current-mode control schemes with a minimal external parts count. This design note describes a circuit with low startup current (less than 0.5mA) MOSFET-compatible undervoltage lockout thresholds programmable restart-delay HICCUP fault protection auxiliary 5V precision reference and overvoltage/overtemper - DN-27 UC1842/UC1842A Family - Summary of Functional DifferencesPDF, 21 Kb, File published: Sep 5, 1999
The UC1842A/3A/4A/5A family of control ICs is a pin-for-pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current-mode switched-mode power supplies this device has been improved for higher frequency off-line power supplies. This new A series of controllers UC1842A/43A/44A/45A is superior to its predecessors in startup current requirements - DN-40 The Effects of Oscillator Discharge Current Variations on Maximum DutyPDF, 39 Kb, File published: Sep 5, 1999
This design note details programming frequency and maximum duty cycle using the UC3842 and UC3842-A PWM oscillator ICs. Simplified equations are used to develop obtainable ranges for parameters over IC tolerances. - DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802PDF, 42 Kb, File published: Sep 5, 1999
The UCC3802 offers numerous advantages that allow the power supply design engineer to meet requirements for lower power for battery-operated equipment higher switching frequencies for reduced magnetics size higher levels of circuit integration for improved reliability and lower cost. The UCC3802 family of devices is pin-out compatible with the UC3842 and UC3842A families; however it is not plu
Model Line
Series: UC1845A (5)
Manufacturer's Classification
- Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter
