LT8645SEV#PBF vs LT8646 Comparison
Detailed side-by-side comparison of LT8645SEV#PBF by Analog Devices and LT8646 by Analog Devices. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Analog Devices
LT8645SEV#PBF - 65V 8A Silent Switcher Buck Regulator | Analog Devices
LT8645SEV#PBF ✓ Active
Specification Comparison
| Parameter | LT8645SEV#PBF | LT8646 |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.18 | $5.18 |
| Topology | Synchronous Buck (Step-Down) | Synchronous Step-Down (Buck) |
| Input Voltage Range | 3.4 V to 65 V | 3 V to 65 V (65 V abs max) |
| Output Voltage Range | 0.97 V to 25 V (adjustable) | 0.97 V to VIN (adjustable) |
| Maximum Output Current | 8 A | 8 A continuous |
| Number of Outputs | 1 | — |
| Switching Frequency Range | 200 kHz to 2.2 MHz | — |
| Architecture | Silent Switcher 2nd generation | Silent Switcher 2 with internal bypass capacitors |
| Internal Switches | Yes (top + bottom N-channel MOSFETs) | — |
| Quiescent Current | Ultra-low (see datasheet for Iq) | 2.5 µA (typical at no load) |
| Efficiency | > 95% peak | >95 % at 12V to 3.3V/8A |
| Operating Temperature Range | -40 C to +125 C (automotive grade) | — |
| Package | 32-pin LQFN EP (5 mm x 6 mm) | 32-TFQFN Exposed Pad (5 mm × 6 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 1 | — |
| RoHS Status | Compliant (#PBF suffix) | Compliant |
| Switching Frequency | — | 200 kHz to 3 MHz (programmable, synchronisable) |
| Internal MOSFETs | — | Yes (high-side and low-side integrated) |
| Spread Spectrum | — | Yes (selectable) |
| Soft-Start | — | Internal, programmable |
| Output Over-Voltage Protection | — | Yes (latch-off) |
| Thermal Shutdown | — | Yes |
| Operating Junction Temperature | — | -40 °C to +125 °C |