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UC2525AN
+StücklisteIC REG CTRLR MULT TOPOLOGY 16DIP
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HerstellerTexas Instruments
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Herstellerteil #UC2525AN
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Datenblatt UC2525AN DataSheet
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Paket DIP-16
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Auf Lager6647
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Spezifikationen
| Attribut | Wert |
| Supplier | Texas Instruments |
| Package | Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 8V ~ 35V |
| Frequency-Switching | 100Hz ~ 400kHz |
| DutyCycle(Max) | 49% |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Enable, Frequency Control, Soft Start |
| OperatingTemperature | -25°C ~ 85°C (TA) |
| MountingType | Through Hole |
| Package/Case | 16-DIP (0.300, 7.62mm) |
Übersicht
Description
- Error amplifier with an internal reference and external feedback/compensation
- Oscillator to set switching frequency (with external RT/CT components)
- PWM comparator and latch/driver to switch a power transistor
- Features such as undervoltage lockout, soft‑start, dead‑time control, and overcurrent protection
External components determine frequency, loop compensation, and startup behavior. Typical applications include offline and DC‑DC SMPS (flyback, forward topologies, etc.) in low‑ to mid‑power supplies. The “AN” suffix generally indicates a specific packaging variant (e.g., 8‑pin DIP/SOIC).
Equivalent
Features
- 8-pin package (DIP-8/SO-8) for ease of use in power supplies
- Current-mode PWM control with a sense input and slope compensation
- Built-in 5V reference and transconductance error amplifier for regulation via optocoupler
- Oscillator frequency set by a single external resistor (typical tens of kHz range)
- Startup current source and undervoltage lockout with hysteresis
- Soft-start to limit inrush and improve stability
- Overcurrent protection (current-limit) with protection latch
- Overtemperature protection and basic fault protection
- Output driver to control an external power MOSFET (gate-drive capability)
- Suitable for flyback, forward, and other SMPS topologies with isolated or non-isolated converters
Notes: For exact electrical specs (voltage ranges, timing, and protection thresholds), consult the official datasheet.
Pinout
- Functions (per UC2525AN):
- Vcc: power supply input
- GND: ground
- OUTPUT: drives the external switching device
- FB (VFB): feedback input for regulation
- COMP: compensation node for the error amplifier
- IS: current-sense/input for current-mode control
- RT/CT: timing network input (oscillator frequency)
- Vref: reference voltage output
Notes: UC2525AN is an 8-pin PWM controller used in switch-mode power supplies; exact pin numbers may vary by package, so check the datasheet for your specific package.
Manufacturer
What kind of company: Unitrode was a semiconductor company specializing in analog and mixed-signal integrated circuits, including power-management and PWM/controller ICs for switching power supplies.
Application
- DC-DC switching regulators for computers, telecom, and consumer electronics
- Topologies: buck, boost, buck-boost, flyback, and forward converters
- Battery chargers and charging adapters
- General-purpose SMPS controllers for low- to mid-power applications (soft-start, current limit, protection features)
