Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Device type | Isolated precision half-bridge gate driver |
| Isolation rating | 3 kV rms class |
| Peak output current | 4 A |
| Maximum switching frequency | 1 MHz |
| Output-side operating range | 4.5 V to 18 V |
| Secondary UVLO option | C grade, approximately 11 V |
| Propagation delay | 54 ns maximum |
| Package | 16-lead SOIC |
Product Overview
ADUM3223CRZ is the C-grade ADuM3223 isolated precision half-bridge gate driver. It combines 4 A peak drive with 1 MHz switching capability and tight channel matching for isolated high-side and low-side gate control.
Its selection-critical difference is the approximately 11 V secondary undervoltage-lockout threshold. That higher threshold is intended for power devices whose gate-drive rail should remain well above low-voltage enhancement levels, and it makes the C grade unsuitable as a transparent substitute for the lower-UVLO A or B grades without checking the intended drive supply.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Peak output current | 4 A |
| Maximum switching frequency | 1 MHz |
| Input logic | 3.3 V / 5 V CMOS compatible |
| Output-side supply | 4.5 V to 18 V |
| C-grade secondary UVLO | Approximately 11 V |
| Maximum propagation delay | 54 ns |
| Maximum channel matching | 5 ns |
| Common-mode transient immunity | >25 kV/µs |
Drive-Rail Considerations
An 11 V-class UVLO means the output side remains disabled at gate-drive voltages that the A and B grades may already accept. The selected secondary supply must therefore provide adequate margin above the C-grade threshold during startup, transients and load steps.
This behavior can be beneficial for high-gate-voltage devices but can also prevent operation in systems designed around lower 5 V to 10 V gate-drive rails.
Manufacturer Resource
Analog Devices ADuM3223 product page
Quality & Verification Support
C-grade suffix, SOIC package, lot/date information and isolation-device traceability can be verified before shipment.
Request a Quote
Request ADUM3223CRZ exactly and include quantity, date-code and traceability requirements.
For a lower secondary supply undervoltage lockout in the ADuM3223 family, compare ADUM3223ARZ (A-grade VDD2 UVLO about 4.1 V) with this ADUM3223CRZ (C-grade about 11.0 V). Both are isolated 4 A gate-driver variants, but the UVLO threshold affects gate-drive startup and protection; re-evaluate the supply rail before changing grades.
