LT8646SIV#WPBF vs LT8646 Comparison
Detailed side-by-side comparison of LT8646SIV#WPBF 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.
Specification Comparison
| Parameter | LT8646SIV#WPBF | 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) | $6.20 | $5.18 |
| Topology | Synchronous Step-Down (Buck) | 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 64 V (adjustable) | 0.97 V to VIN (adjustable) |
| Maximum Output Current | 8 A | 8 A continuous |
| Switching Frequency Range | 200 kHz to 2.2 MHz (programmable) | — |
| Quiescent Current (Burst Mode) | 2.5 µA typical | — |
| Peak Efficiency | 96% | — |
| Architecture | Silent Switcher 2 with integrated bypass capacitors | Silent Switcher 2 with internal bypass capacitors |
| Internal MOSFETs | Top + bottom N-channel MOSFET switches | Yes (high-side and low-side integrated) |
| Package | 32-pin LQFN (6 mm x 4 mm) with Exposed Pad | 32-TFQFN Exposed Pad (5 mm × 6 mm) |
| Operating Temperature Range | -40°C to +125°C (-IV suffix) | — |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) | — |
| Automotive Qualification | AEC-Q100 (Automotive grade per Arrow listing) | — |
| RoHS Status | Compliant | Compliant |
| Synchronization | External clock sync input | — |
| Power Good Flag | Yes | — |
| Thermal Resistance (θJA) | ~25°C/W on 4-layer JEDEC board (estimated from package family) | — |
| Quiescent Current | — | 2.5 µA (typical at no load) |
| Switching Frequency | — | 200 kHz to 3 MHz (programmable, synchronisable) |
| Efficiency | — | >95 % at 12V to 3.3V/8A |
| 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 |