UC3526ANG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments UC3526ANG4 is a voltage-mode regulating pulse width modulator (PWM) switching controller IC operating from a 7 V to 35 V supply in an 18-pin PDIP package. It supports push-pull, half-bridge, and full-bridge topologies with programmable dead time and oscillator frequency. Available from distributors worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC3526ANG4 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
- Voltage-mode PWM control with 7 V to 35 V input supply range, supporting push-pull, half-bridge, and full-bridge power converter topologies
- Programmable oscillator frequency and dead time via external resistor-capacitor network for flexible switching from kHz to hundreds of kHz
- 18-pin PDIP (JEDEC R-PDIP-T18) package with undervoltage lockout and soft-start control for robust industrial power supply designs
Applications
The UC3526ANG4 is well suited for DC-DC converters, offline switching power supplies, and motor drive controllers operating in the 7 V to 35 V input range that require precise voltage-mode PWM regulation. It is commonly deployed in industrial power modules, UPS systems, and bench power supplies where programmable switching frequency and complementary output drive capability simplify transformer-coupled designs.
Specifications
| YTEOL | 0 |
| Additional Feature | LG-MAX |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 35V |
| Input Voltage-Min | 7V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDIP-T18 |
| 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 | DIP18,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 650kHz |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC3526ANG4:
Switching Controller, Voltage-mode, 0.2A, 600kHz Switching Freq-Max, CMOS, PDIP18
Switching Controller, Voltage-mode, 0.2A, 600kHz Switching Freq-Max, CMOS, PDSO18
Switching Controller, Voltage-mode, 0.2A, 600kHz Switching Freq-Max, CMOS, CDIP18
Switching Controller, Voltage-mode, 0.2A, 650kHz Switching Freq-Max, CMOS, PQCC20
Switching Controller, Voltage-mode, 0.2A, 600kHz Switching Freq-Max, CMOS, PDSO18
Switching Controller, Voltage-mode, 0.2A, 600kHz Switching Freq-Max, CMOS, PDSO18
Frequently Asked Questions
What input voltage range does UC3526ANG4 support, and what PWM control mode does it use?
The UC3526ANG4 operates from a 7 V minimum to 35 V maximum input supply, with a nominal operating point at 15 V. It uses voltage-mode PWM control, where the duty cycle is set by comparing a sawtooth oscillator ramp against an error amplifier output, providing predictable loop gain and simple compensation design.
Which converter topologies can UC3526ANG4 drive, and how are dead times set?
The UC3526ANG4 supports push-pull, half-bridge, and full-bridge switching topologies through its complementary output stage. Dead time between the two output channels is programmed by an external resistor connected to the dead-time control pin, allowing adjustment from approximately 0 ns to several hundred nanoseconds to prevent shoot-through in bridge circuits.
How does UC3526ANG4 compare to UC3525A for industrial power supply designs?
Both UC3526ANG4 and UC3525A are voltage-mode PWM controllers in 18-pin PDIP packages, but the UC3526ANG4 includes an LG-MAX additional feature that allows it to be used with extended gate drive configurations. For a 35 V maximum supply industrial design, the UC3526ANG4's wider input range and programmable oscillator typically make it the more flexible choice.
What oscillator frequency range can be programmed on the UC3526ANG4, and how does this affect transformer sizing?
The UC3526ANG4 oscillator frequency is set by external R-C components and can range from a few kHz to over 400 kHz. Higher switching frequencies above 100 kHz allow the use of smaller magnetic cores and output filter inductors, reducing transformer volume by a factor of roughly 4x compared to a 25 kHz design, which benefits space-constrained power supply enclosures.
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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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