Exact device and ordering identity
UCD3138064RGCR is TI’s 64-pin RGC VQFN large-tape-reel version of the non-A UCD3138064 isolated-power digital controller. It manages programmable digital feedback and switching timing for an external power stage; it does not contain a finished high-current converter. The manufacturer ordering table lists 2,000 units per large reel. Procurement must identify the full RGCR orderable and the 64-contact assembly before comparing it with 40-contact or A-series relatives.
Operating and control considerations
The UCD3138064 architecture provides 64 kB of flash organized as two 32 kB banks, supporting a firmware update strategy in which the controller can run from one bank while another is programmed. It supports up to three independent feedback loops and eight high-resolution DPWM outputs, with a 250 ps pulse-width resolution and an upper 2 MHz switching capability. These are controller resources; external gate-drive design, current sensing and software timing determine achievable performance in a complete supply.
Package, sourcing and engineering trade-offs
The 64-contact RGC mechanical drawing and pin assignment matter when planning a PCB revision. UCD3138064RMHR has a 40-contact RMH WQFN package; its package name and exposed-pad layout are not interchangeable with this RGCR footprint. A buyer should also specify whether firmware was written for the non-A UCD3138064, which communication interfaces are needed, and whether qualified board-level protection tests have been completed. The stated reel quantity concerns receiving logistics, not converter output power.
Manufacturer-verified selection specifications
| Selection parameter | TI-verified value | Engineering condition |
|---|---|---|
| Flash | 64 kB program flash derivative of UCD3138 family | Confirm firmware image layout |
| Banks | 2-32 kB program flash memory banks | Firmware bank arrangement |
| Loops | Digital control of up to 3 independent feedback Loops | Control-loop configuration |
| Dpwm | Up to 8 high resolution digital pulse width modulated | Output-pin and firmware mapping |
| Pwm resolution | 250-ps pulse width resolution | Timing granularity, not ADC precision |
| Frequency limit | Up to 2-MHz switching frequency | Maximum control frequency |
| Adc | 14-channel, 12-bit, 267-ksps general purpose ADC | ADC sampling specification |
| Catalog package | VQFN-64-EP(9×9) | Match exact TI mechanical drawing before footprint or replacement approval |
For the same non-A UCD3138064 digital controller in the 40-contact RMH WQFN package, compare UCD3138064RMHR with this 64-contact RGC version. For the 64-pin A-family controller, see UCD3138064ARGCR. These parts share digital-power control capabilities, but differences in package pins and A/non-A peripheral mapping require separate schematic, firmware and mechanical verification; neither comparison establishes a drop-in substitute.
Procurement and datasheet
Request a quotation for UCD3138064RGCR using the complete orderable number, target quantity and package requirement. Stock, pricing and delivery timing require a direct RFQ confirmation; no on-page availability or price is promised. Source-listed alternative candidates, where present, are for engineering evaluation and do not establish drop-in compatibility.
