UC3823ANG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments UC3823ANG4 is a voltage-mode PWM controller with 12V to 20V supply range, up to 1 MHz switching frequency, and 5.15V/200mA reference output in a DIP-16 package. Configurable for current-mode control for flexible power supply designs. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UC3823ANG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC3823ANG4?
- Voltage-mode PWM control up to 1 MHz switching frequency enabling compact magnetics and fast transient response in DC-DC converter designs
- Configurable current-mode operation providing cycle-by-cycle current limiting and inherent input voltage feed-forward for improved load regulation
- 5.15V 200mA precision reference output simplifying external feedback network design and driving optocoupler circuits in isolated power supplies
What is UC3823ANG4 used for?
UC3823ANG4 is used in DC-DC converter topologies including buck, boost, and flyback power supplies for telecom equipment, industrial power modules, and distributed power architectures requiring 12V to 20V input. Its 1 MHz maximum switching frequency allows designers to reduce transformer and filter sizes, enabling compact high-power-density converter designs. Server power supplies, battery chargers, and bench power equipment benefit from its flexible voltage-mode or current-mode operation and the precision 5.15V reference for accurate output regulation.
What are the specifications of UC3823ANG4?
| YTEOL | 0 |
| Additional Feature | CAN ALSO BE CONFIGURED IN CURRENT MODE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 12V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 2.2A |
| Output Voltage-Max | 5.15V |
| Output Voltage-Min | 5.05V |
| Output Voltage-Nom | 5.1V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 36mA |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | NO |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1150kHz |
| Technology | BICMOS |
| 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 |
Where can I find the UC3823ANG4 datasheet?
UC3823ANG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC3823ANG4?
Compatible alternatives and drop-in replacements for UC3823ANG4:
Switching Controller, Current/voltage-mode, 2.2A, 1000kHz Switching Freq-Max, BICMOS, PDIP16
Frequently Asked Questions
How does configuring UC3823ANG4 in current-mode versus voltage-mode affect loop stability in a flyback converter?
In voltage-mode, UC3823ANG4 requires a type-3 compensator in the feedback loop to achieve adequate phase margin, as the modulator introduces a double-pole from the output LC filter. Switching to current-mode cancels the inductor pole, simplifying compensation to a type-2 network and improving transient response by 2 to 5 times faster recovery. Current-mode also provides inherent cycle-by-cycle peak current limiting at the 1 A threshold, adding protection against core saturation in flyback transformers operating from the 12V to 20V input range.
What switching frequency should engineers select when using UC3823ANG4 to minimize transformer size in a 12V input DC-DC converter?
UC3823ANG4 supports switching frequencies up to 1 MHz, allowing transformer cores as small as EE10 or EP7 for power levels under 20W. At 500 kHz, the transformer volume drops to roughly 25% of what a 100 kHz design requires, substantially reducing overall converter size and PCB footprint. A practical trade-off between switching losses and core size typically places the optimal frequency between 200 kHz and 500 kHz for a 12V input, 5V output buck converter delivering 5A to 10A.
Can UC3823ANG4 drive MOSFETs directly, or is a gate-driver stage required for high-side switching applications?
UC3823ANG4 provides a 5.15V, 200mA totem-pole output capable of directly driving low-side MOSFETs with gate charge up to about 40 nC at 500 kHz without an external driver. For higher gate charge MOSFETs or high-side configurations in buck or half-bridge topologies, an external gate driver such as UCC27321 is needed, as the on-chip driver lacks bootstrap capability and sufficient peak current for gate charges above 60 nC at 1 MHz switching frequency.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit