UC2525BDWTRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC2525BDWTRG4 is a voltage-mode PWM controller capable of driving up to 400 mA output gate current from an 8 V to 35 V input supply in a 16-pin SOIC package. It uses pulse-width modulation to regulate switching power converters with precise voltage control. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UC2525BDWTRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC2525BDWTRG4?
- 400 mA peak gate drive output enables direct MOSFET driving without external buffer transistors in mid-power DC-DC stages
- Wide 8 V to 35 V operating input range accommodates unregulated industrial 24 V and telecom 48 V (after pre-regulation) power bus rails
- Voltage-mode PWM control with integrated oscillator simplifies compensation network design compared with current-mode controllers
- 16-pin SOIC package balances PCB footprint with heat dissipation for industrial-grade switching converter designs
What is UC2525BDWTRG4 used for?
The UC2525BDWTRG4 is a proven choice for half-bridge and full-bridge DC-DC converters in industrial power supplies, UPS systems, and telecom rectifiers operating from 24 V or 48 V bus rails. Its 400 mA gate drive capability allows direct control of high-capacitance power MOSFETs in converters up to several hundred watts without an additional gate driver stage. The device is also used in off-line flyback and push-pull topologies where a wide input range and reliable PWM regulation are required.
What are the specifications of UC2525BDWTRG4?
| YTEOL | 0 |
| 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-PDSO-G16 |
| JESD-609 Code | e4 |
| 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 | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 500kHz |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the UC2525BDWTRG4 datasheet?
UC2525BDWTRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC2525BDWTRG4?
Compatible alternatives and drop-in replacements for UC2525BDWTRG4:
Switching Controller, Voltage-mode, 0.5A, 500kHz Switching Freq-Max, BIPolar, PDSO16
Frequently Asked Questions
What gate drive current can the UC2525BDWTRG4 deliver, and does it require an external buffer to drive power MOSFETs?
The UC2525BDWTRG4 sources and sinks up to 400 mA peak gate drive current, which is sufficient to charge and discharge power MOSFETs with gate capacitances up to 10 nF at switching frequencies around 100 kHz without any external buffer transistor. This eliminates one or two discrete components per phase, reducing BOM cost and simplifying PCB layout in industrial DC-DC converter designs.
Over what input voltage range does the UC2525BDWTRG4 operate, and which power bus rails does this cover?
The device operates with a supply voltage from 8 V to 35 V, directly covering 12 V automotive auxiliary rails, 24 V industrial control bus rails, and 28 V aerospace DC power systems. For 48 V telecom applications a simple pre-regulator dropping to below 35 V extends compatibility, making the UC2525BDWTRG4 a versatile controller across multiple industrial voltage domains.
How does voltage-mode PWM control in the UC2525BDWTRG4 simplify the compensation design compared with current-mode control?
Voltage-mode control uses a single feedback loop comparing output voltage to a reference, so compensation requires only a type-II or type-III RC network on one error-amplifier pin. Current-mode controllers add a current-sense loop that introduces a slope-compensation requirement and extra resistors or transformers. For engineers familiar with classical control theory, voltage-mode compensation in the UC2525BDWTRG4 can be designed with a 2-pole, 1-zero network at crossover frequencies up to 20 kHz in a 100 kHz converter.
What converter topologies are supported by the UC2525BDWTRG4, and what output power levels are practical?
The UC2525BDWTRG4 supports push-pull, half-bridge, and full-bridge topologies through its complementary output pair with adjustable dead-time. With a 400 mA gate drive and an 8 V to 35 V input, practical designs achieve 50 W to 500 W output depending on topology, switching frequency (up to several hundred kHz), and MOSFET selection. It is also used in flyback and forward converters up to around 100 W by using only one of the two output channels.
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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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