UC1525BJ Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The UC1525BJ is a voltage-mode PWM switching controller IC from Texas Instruments, designed for high-performance DC-DC converter and power supply applications. It operates over an input voltage range of 8 V to 35 V and provides pulse width modulation control. Available in a 16-pin ceramic DIP package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC1525BJ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC1525BJ?
- Voltage-mode PWM control with programmable oscillator frequency allows precise regulation of output voltage in isolated and non-isolated DC-DC converter topologies
- Wide input voltage range of 8 V to 35 V (nominal 20 V) accommodates diverse power supply architectures from low-voltage to industrial bus rails
- Integrated soft-start, shutdown, and error amplifier functions simplify power supply design and reduce external component count
- 16-pin ceramic DIP package (GDIP) offers excellent reliability and thermal performance for military and high-reliability industrial applications
What is UC1525BJ used for?
The UC1525BJ is used in high-reliability DC-DC converters, push-pull, half-bridge, and full-bridge power supply topologies for military, aerospace, and industrial equipment. It is well-suited for designing off-line switching power supplies and motor drive pre-regulators requiring stable voltage-mode PWM control. The device is also applied in telecom power systems and instrumentation where robust, high-temperature-rated switching controllers are essential.
What are the specifications of UC1525BJ?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 35V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 20V |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 0.5A |
| Output Voltage-Max | 5.138V |
| Output Voltage-Min | 5.062V |
| Output Voltage-Nom | 5.1V |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 20mA |
| Supply Voltage-Max (Vsup) | 8V |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 400kHz |
| Technology | BIPOLAR |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## UC1525BJ Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the UC1525BJ datasheet?
UC1525BJ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC1525BJ?
Compatible alternatives and drop-in replacements for UC1525BJ:
suggested
suggested
suggested
suggested
suggested
suggested
Switching Controller, Voltage-mode, 0.5A, 400kHz Switching Freq-Max, BIPolar, CDIP16
Frequently Asked Questions
What control mode does the UC1525BJ use and what is its input voltage range?
The UC1525BJ uses voltage-mode PWM (Pulse Width Modulation) control, which regulates the output by comparing a ramp signal to an error amplifier output. It operates over an input voltage range of 8 V to 35 V, with a nominal input of 20 V, making it versatile for a wide range of DC-DC converter applications.
What package does the UC1525BJ use and is it RoHS compliant?
The UC1525BJ is housed in a 16-pin ceramic DIP (GDIP) package, designated JESD-30 code R-GDIP-T16. It carries JESD-609 Code: e0, which indicates it is not restricted-materials compliant in the standard lead-free sense. The Pbfree Code: Yes suggests a lead-free version is available; verify the specific grade with Texas Instruments for your compliance requirements.
What power supply topologies can the UC1525BJ be used with?
The UC1525BJ is compatible with push-pull, half-bridge, full-bridge, and other double-ended switching power supply topologies. Its dual complementary totem-pole outputs provide gate drive signals for both switches in symmetric converter architectures, making it suitable for high-power DC-DC converters and off-line switchers.
Does the UC1525BJ have built-in soft-start or protection features?
Yes, the UC1525BJ includes an integrated soft-start circuit that gradually ramps up the duty cycle at startup, preventing inrush current and output overshoot. It also provides a shutdown input for overcurrent protection and a sync pin for frequency synchronization with external signals, simplifying protection circuitry design.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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