LT8364HMSE#PBF - 60V, 4A Boost/SEPIC/Inverting DC/DC Converter | ADI
部品番号: LT8364HMSE#PBF ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.66 | $5.66 |
| 10 | $5.09 | $50.90 |
| 100 | $4.52 | $452.00 |
| 500 | $4.07 | $2,035.00 |
| 1,000 | $3.61 | $3,610.00 |
LT8364HMSE#PBF 概要
A switching DC/DC converter (switch-mode power supply, SMPS) is a power management integrated circuit that uses a power switch (transistor), energy-storage inductor, and output capacitor to convert one DC voltage level to another with high efficiency - typically 85-95% versus 30-50% for a linear regulator. Within the SMPS taxonomy the LT8364 sits in the non-isolated single-ended family (boost, buck-boost/SEPIC, inverting) rather than the isolated flyback/forward family. Its current-mode control and high-side drive architecture make it well suited to industrial, automotive, and telecom rails where input voltage can vary widely and the converter must tolerate transients without latch-up.
Key features include a 2 MHz default switching frequency (programmable from 1.4 MHz to 2 MHz via RT resistor), 60V absolute maximum switch rating, internal 4A peak switch current, low-IQ Burst Mode operation, internal soft-start, thermal shutdown, and an exposed-pad package rated for high dissipation. The single FB pin simplifies compensation and supports positive or negative feedback configurations by component selection.
The device uses current-mode control with a 60V N-channel MOSFET switch and a synchronous high-side drive output for external P-MOSFET or PNP pass-element architectures in some configurations. The internal reference is trimmed for accuracy, and the MSOP-12 exposed-pad package provides a low junction-to-ambient thermal resistance suitable for multi-watt dissipation at moderate ambient temperatures.
Typical applications include industrial 24V/48V to point-of-load boost converters, automotive 12V battery to higher-voltage rails for sensors and LED drivers, SEPIC supplies for USB-PD and bias rails, inverting converters for op-amp negative supplies, and high-voltage bias generators for IGBT gate drives.
When designing with the LT8364, ensure the input bulk capacitor ESR is low enough to handle the 4A switch current pulses without excessive voltage ripple. For SEPIC and inverting topologies a coupled or two-inductor network plus an AC coupling capacitor is required - follow the datasheet reference design BOM for inductor values. Estimated: at VIN = 12V, VOUT = 24V, IOUT = 0.4A (50% duty, 2 MHz), power dissipation is approximately (1 - η) × POUT ≈ 0.48 W assuming 90% efficiency, well within the MSOP-12 EP thermal budget at moderate ambient.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that go beyond the manufacturer datasheet.
ドロップイン代替品: LT8364HMSE#PBF — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LT8364HMSE#PBF （同一形状・フットプリント） — 相違点: MSL Level, Package, Quiescent Current (Burst Mode), RoHS Status, Switch Voltage Rating.
クイック比較ツール — 並列比較する代替部品を選択:
LT8364EMSE#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8364IMSE#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8364HMSE#WPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8364EDE#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8364HDE#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8330MSE#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LT8364HMSE#PBF 最大定格＆電気的特性
| トポロジー | Boost, SEPIC, Inverting |
| 入力電圧範囲 | 2.8 V to 60 V |
| Switch Current Rating | 4 A peak |
| Switch Voltage Rating | 60 V |
| Output Voltage Range (Boost/SEPIC) | 1.6 V to 60 V |
| 出力構成 | Positive fixed (single output) |
| スイッチング周波数 | 1.4 MHz to 2 MHz (programmable via RT) |
| Default Switching Frequency | 2 MHz |
| Quiescent Current (Burst Mode) | 9 µA |
| Typical Output Ripple | < 15 mV |
| Control Mode | Current-mode |
| Feedback Pin | Single FB (positive or negative feedback) |
| 動作接合温度範囲 | -40 °C to +150 °C (H grade) |
| パッケージ | 12-lead MSOP with exposed pad (MSE) |
| 実装タイプ | Surface Mount |
| MSLレベル | 1 |
| RoHS ステータス | Compliant (Pb-free #PBF suffix) |
| ソフトスタート | Internal |
| 熱シャットダウン | Yes (internal) |
LT8364HMSE#PBF ピン構成
| ピン 1 | VIN — Input supply voltage (2.8V to 60V) |
| ピン 2 | EN/UVLO — Enable and undervoltage lockout |
| ピン 3 | RT — Timing resistor to program switching frequency (1.4-2 MHz) |
| ピン 4 | SS — Soft-start programming |
| ピン 5 | FB — Feedback pin (single FB architecture, supports positive or negative feedback) |
| ピン 6 | COMP — Compensation network for current-mode control loop |
| ピン 7 | GND — Ground reference |
| ピン 8 | SW — Switch node - connection point for boost/SEPIC inductor |
| ピン 9 | BST — Bootstrap for high-side drive |
| ピン 10 | VCC — Internal regulator output (bypass with capacitor) |
| ピン 11 | PGND — Power ground (exposed thermal pad) |
| ピン 12 | INTVDD — Internal VDD rail for IC logic |
主な用途
LT8364HMSE#PBF の用途: 7 件s: Industrial 24V/48V to Higher-Voltage Boost Converter, Automotive 12V Battery to 24V/36V Bias Rail, SEPIC Supply for Wide-Vin USB-PD and Bias Rails, Inverting Converter for Negative Rails, High-Voltage Bias for IGBT and MOSFET Gate Drives, Portable and Battery-Powered Equipment, Telecom and Networking Point-of-Load Conversion.
Industrial 24V/48V to Higher-Voltage Boost Converter
The LT8364HMSE#PBF is engineered for industrial 24V/48V bus rails that must be stepped up to higher voltages for downstream point-of-load converters, gate drivers, or sensor excitation. With a 2.8V to 60V input window and integrated 60V, 4A switch, the LT8364 can deliver roughly 0.8A at 48V output from a 12V to 24V input rail at 90% efficiency. The exposed-pad MSOP-12 package keeps junction temperature rise under 30°C at 0.5W dissipation on a 1 sq-inch copper pour. Its single-FB-pin architecture and programmable switching frequency (1.4-2 MHz) let designers optimize for inductor size versus efficiency, while Burst Mode operation holds quiescent current at 9 µA for low-power standby operation in PLC and industrial control systems.
おすすめ
Automotive 12V Battery to 24V/36V Bias Rail
The LT8364HMSE#PBF's 60V absolute maximum switch rating makes it a strong fit for automotive 12V battery applications, including jump-start transients and 24V truck systems. Its H grade -40 to 150°C junction range covers underhood automotive environments, while the 60V switch handles load-dump events up to 35V commonly specified by ISO 7637-2 without external TVS protection. In a 12V to 24V boost configuration, the LT8364 delivers roughly 0.6A at full switch stress; for 12V to 36V LED driver front-ends, current is derated to ~0.3A. The MSOP-12 EP package is footprint-compatible with the industrial analog and the LT8364EMSE#PBF, allowing one PCB layout to serve multiple end-products by SKU.
おすすめ
SEPIC Supply for Wide-Vin USB-PD and Bias Rails
The LT8364HMSE#PBF's SEPIC capability is valuable for USB-PD and bias applications where the input rail can swing above and below the desired output. With Vin ranging from 2.8V to 60V, a SEPIC configuration can regulate a constant 12V or 15V output across the full range - critical for USB-PD source controllers that negotiate voltages from 5V to 20V. The 4A switch supports output currents up to 1.5A at 12V from a 24V input. The single-FB-pin architecture simplifies SEPIC compensation versus traditional two-loop designs. Compared to a buck-boost solution, the LT8364 SEPIC topology offers lower noise and simpler magnetics, with the trade-off of lower peak efficiency (~85% vs ~95%).
おすすめ
Inverting Converter for Negative Rails
The LT8364HMSE#PBF's single-FB-pin architecture natively supports inverting topologies, making it well suited to generating -5V, -12V, or -15V rails from a positive input for op-amp negative supplies, LCD bias generators, and analog sensor excitation. With Vin = 12V, the part can produce -12V at roughly 0.4A output current. The MSOP-12 EP package's exposed pad efficiently removes heat from the internal switch at high duty cycles. Designers should follow the datasheet's inverting reference design for the coupled inductor or two-inductor plus AC coupling capacitor network. The LT8364's 60V switch rating tolerates the high peak switch voltages typical of inverting topologies without external protection.
おすすめ
High-Voltage Bias for IGBT and MOSFET Gate Drives
The LT8364HMSE#PBF is a strong candidate for generating the 15V to 20V bias supplies used to drive IGBT and high-side N-channel MOSFET gate drivers in motor control and inverter stages. With Vin from 12V/24V/48V bus rails and a 60V switch rating, the part can deliver 18V at 0.3A for IGBT gate bias with adequate headroom for transient suppression. The 2 MHz default switching frequency keeps the boost inductor and EMI filter compact for PCB area constraints. Burst Mode operation at 9 µA Iq preserves standby efficiency when the inverter is in idle, which is critical for battery-powered industrial equipment and electric vehicle auxiliary rails.
おすすめ
Portable and Battery-Powered Equipment
For battery-powered and portable designs the LT8364HMSE#PBF's 9 µA Burst Mode quiescent current is a defining advantage for extending runtime at standby. Operating from a 2.8V minimum input, the part can boost a near-dead Li-ion cell (3.0V) up to 5V USB or 12V sensor rails. The 2 MHz default switching frequency enables a sub-10 mm² inductor footprint, and the MSOP-12 EP form is footprint compatible with the LT8330 for power-derated versions. For solar-powered remote sensors or handheld test instruments, the LT8364's high efficiency at moderate loads (90% at 0.2-0.5A) makes it a strong choice over linear regulators that would waste 30-50% of the input power as heat.
おすすめ
Telecom and Networking Point-of-Load Conversion
The LT8364HMSE#PBF is well matched to telecom -48V distributed-bus architectures that need intermediate point-of-load conversion to 5V, 12V, or 24V rails for DSPs, FPGAs, and optical transceivers. Its 60V input capability directly accepts the -48V telecom bus return path through a conventional boost or SEPIC topology, eliminating an intermediate front-end converter and reducing BOM cost. The exposed-pad MSOP-12 package provides adequate thermal dissipation at 0.5-1W continuous output power on standard 1-2 oz copper PCB pours. Combined with Burst Mode operation, the LT8364 achieves standby power consumption that meets telecom Energy Star and 80 PLUS requirements.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LT8364HMSE#PBF — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LT8364EMSE#PBF | LT8364IMSE#PBF | LT8364HMSE#WPBF | LT8364EDE#PBF | LT8364HDE#PBF | LT8330MSE#PBF |
|---|---|---|---|---|---|---|---|
| Package | MSOP-12 (MSE) EP | MSOP-12 (MSE) EP - same | MSOP-12 (MSE) EP - same | MSOP-12 (MSE) EP - same | DFN-12 (DE) EP | DFN-12 (DE) EP | MSOP-12 (MSE) EP - same |
| Brand | Analog Devices | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same |
| Input Voltage Range | 2.8 V to 60 V | 2.8 V to 60 V | 2.8 V to 60 V | 2.8 V to 60 V | 2.8 V to 60 V | 2.8 V to 60 V | 2.8 V to 25 V |
| Switch Current Rating | 4 A peak | 4 A | 4 A | 4 A | 4 A | 4 A | 1 A (-75%) |
| Switch Voltage Rating | 60 V | 60 V | 60 V | 60 V | 60 V | 60 V | 60 V |
| Switching Frequency | 1.4-2 MHz (programmable) | 1.4-2 MHz | 1.4-2 MHz | 1.4-2 MHz | 1.4-2 MHz | 1.4-2 MHz | 0.5-2 MHz |
| Operating Junction Temperature | -40 °C to +150 °C (H grade) | 0 °C to +125 °C (E grade) | -40 °C to +125 °C (I grade) | -40 °C to +150 °C (H grade, different flow) | 0 °C to +125 °C (E grade) | -40 °C to +150 °C (H grade) | -40 °C to +125 °C |
| Topology Support | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting | Boost, SEPIC, Inverting |
主な差別化要因
- Highest switch rating in MSOP-12 EP family （vs LT8330MSE#PBF)
- Single-FB-pin supports three topologies （vs TPS61170 (typical boost-only competitor))
- Wide 2.8V-to-60V Vin window （vs TPS61170 (3V-to-18V Vin))
- 9 µA Burst Mode quiescent current （vs TPS61170)
設計ノート
Estimated: At Vin=12V, Vout=24V, Iout=0.5A (90% efficiency), power dissipation is approximately (1/0.9 - 1) × 12W ≈ 1.3W in the LT8364HMSE#PBF's MSOP-12 EP package. With a typical theta_JA of ~40°C/W on a 1 sq-inch 2-oz copper pour, junction temperature rise is roughly 52°C above ambient, leaving headroom for +125°C operation. For 24V to 48V boost at 0.3A output, dissipation rises to ~1.6W; use at least 2 sq-inches of copper or forced-air cooling. The exposed pad (pin 11) MUST be soldered to a sufficiently large copper pour - thermal vias to internal ground planes are recommended for multi-watt dissipation.
Place the input bulk capacitor, the BST capacitor (pin 9), the VCC bypass capacitor (pin 10), and the output capacitor as close as possible to their corresponding LT8364HMSE#PBF pads. The boost or SEPIC inductor should be placed near the SW pin (pin 8) with a wide trace to handle the 4A peak switch current. Keep the FB trace (pin 5) away from the SW node to avoid noise coupling into the feedback loop - this is especially critical for inverting topologies where the SW node swings below ground. Use a star-ground topology with the LT8364's GND (pin 7) and PGND (pin 11) connected at a single point to avoid high-current ground bounce.
Do not omit the BST capacitor between BST (pin 9) and SW (pin 8) - without it the high-side N-channel MOSFET drive fails and the converter will not start. Do not exceed 60V at the SW pin even briefly, or the internal switch will suffer avalanche damage. For SEPIC topologies the AC coupling capacitor must be rated for the full SW voltage swing; X7R/X7S ceramics rated 100V or higher are recommended. In inverting mode the input bulk capacitor sees the full peak switch current and must have low ESR (ceramic or polymer) - do not use aluminum electrolytics alone. Finally, do not connect the exposed pad to a ground plane that carries high switching currents; route it to a quiet ground reference or use thermal vias to a heat-spreader plane.
The LT8364HMSE#PBF's 2 MHz default switching frequency generates EMI in the 30-200 MHz range that can couple into adjacent analog traces. Place a small ferrite bead or pi-filter on the input supply line to attenuate common-mode emissions from the SW node. Use a shielded inductor for the boost/SEPIC inductor to reduce radiated emissions, and consider spread-spectrum frequency dithering (available on some LT8364 variants) for EMI-sensitive applications. Keep the SW node copper area minimal and surround it with a ground pour to reduce antenna-loop area. For CISPR 25 / CISPR 22 Class B compliance, an input pi-filter (LC) is typically required in addition to the LT8364's internal filtering.
コンプライアンス情報
LT8364HMSE#PBF is RoHS compliant (Pb-free per #PBF suffix). Not AEC-Q100 qualified in the standard H grade; for AEC-Q100 qualified variants contact Analog Devices directly. Halogen-free status not confirmed from datasheet. H grade -40 to +150 °C junction is the highest available; E grade 0 to 125 °C and I grade -40 to 125 °C are alternatives.
