UC3526DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC3526DWG4 is a voltage-mode PWM switching controller IC from Texas Instruments for regulating switch-mode power supplies. It operates from 8V to 35V input with an internal 5V reference and programmable oscillator frequency for flexible topology support. Available in SOIC-18 small outline package, RoHS compliant, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC3526DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input voltage range 8V to 35V with voltage-mode PWM control enabling versatile switch-mode power supply topologies
- 18-pin SOIC package (R-PDSO-G18) providing full feature set including soft-start, shutdown, and current limiting in a compact surface-mount form
- RoHS compliant (JESD-609 e4) with programmable oscillator frequency for optimized switching performance in industrial power converters
Applications
The UC3526DWG4 is used in high-performance switch-mode power supplies for industrial equipment, telecom infrastructure, and distributed power architectures. Its voltage-mode control and wide input range make it well suited for offline power converters, UPS systems, and server power supplies requiring stable regulated outputs. The SOIC-18 package facilitates PCB integration in high-density power converter designs where through-hole components are not preferred.
Specifications
| 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 | 15V |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.2A |
| Output Voltage-Max | 5.1V |
| Output Voltage-Min | 4.9V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.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 | 400kHz |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC3526DWG4:
Switching Controller, Voltage-mode, 0.2A, 400kHz Switching Freq-Max, CMOS, PDSO18
Frequently Asked Questions
What is the input voltage range of the UC3526DWG4?
The UC3526DWG4 operates with an input voltage range from 8V to 35V, with a nominal operating voltage of 15V. This wide range makes it suitable for a variety of SMPS topologies including forward, flyback, and push-pull converters.
What control method does the UC3526DWG4 use?
The UC3526DWG4 uses voltage-mode pulse width modulation (PWM) control, where the output voltage is regulated by comparing a voltage-derived error signal to an internal oscillator ramp. This simplifies compensation network design compared to current-mode control and provides good noise immunity.
What package does the UC3526DWG4 come in?
The UC3526DWG4 is housed in an 18-pin SOIC surface-mount package (JESD-30 code R-PDSO-G18). The wide-body SOIC-18 package provides ample pin count for the full UC3526 feature set while enabling automated SMT assembly.
Is the UC3526DWG4 a drop-in replacement for UC1526 or UC2526?
Yes, the UC3526DWG4 is part of the UC1526/UC2526/UC3526 family from Texas Instruments. The UC3526 variant is rated for commercial temperature range (0°C to 70°C), while UC2526 covers industrial (-40°C to 85°C) and UC1526 covers military (-55°C to 125°C), making them pin-compatible across temperature grades.
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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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