LT8645SHV-2#PBF vs LT8640IUDC-1#PBF Comparison
Detailed side-by-side comparison of LT8645SHV-2#PBF by Analog Devices and LT8640IUDC-1#PBF 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
LT8645SHV-2#PBF - 65V 8A Silent Switcher Buck | Analog Devices
LT8645SHV-2#PBF ✓ Active
Specification Comparison
| Parameter | LT8645SHV-2#PBF | LT8640IUDC-1#PBF |
|---|---|---|
| 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) | $8.10 | $5.10 |
| Topology | Synchronous Step-Down (Buck) | Synchronous Buck (Step-Down) |
| Input Voltage Range | 3.4 V to 65 V | 3.4 V to 42 V |
| Output Voltage Range | 0.97 V to 65 V (adjustable) | 0.97 V to 41.58 V (adjustable) |
| Maximum Output Current | 8 A | 5 A |
| Number of Outputs | 1 | — |
| Switching Frequency | Up to 2.2 MHz | — |
| Quiescent Current | 2.5 µA (Burst Mode) | — |
| Architecture | Silent Switcher 2nd generation | — |
| Internal Switches | Yes (high-side and low-side MOSFETs) | — |
| Internal Bypass Capacitors | Yes (integrated) | — |
| Operating Junction Temperature | -40 °C to +150 °C (HV grade) | — |
| Package | 32-pin LQFN Exposed Pad | 20-WFQFN, 18 leads, exposed pad (3 mm x 4 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | — |
| Lead-Free | Yes (#PBF suffix) | — |
| Switching Frequency Range | — | 200 kHz to 3 MHz |
| Minimum Top Switch On-Time | — | 30 ns |
| Quiescent Current (Burst Mode) | — | 2.5 uA |
| Operating Temperature Range | — | -40C to +125C (TJ) |
| Mode (LT8640-1) | — | Forced Continuous PWM at light load |
| Mode Selection | — | Burst / Spread-Spectrum / SYNC / Forced-Continuous via SYNC/MODE pin |
| Efficiency (architectural claim) | — | Silent Switcher architecture, low-EMI |
| MSL Level | — | 1 (unlimited) |
| Lead-Free / RoHS | — | Yes (PBF suffix) |