LM5013DDART - 100V 3.5A Non-Sync Buck DC/DC Converter | TI
MPN： LM5013DDART ✓ 啟用中LM5013DDART 概覽
A buck converter (also called a step-down switching regulator) is a switch-mode power supply topology that uses an inductor as the primary energy-storage element and a transistor switch to chop the input voltage, then filters it with the LC network to produce a lower, regulated DC output. The buck converter belongs to the broader family of DC-DC converters within the voltage-regulator hierarchy: DC-DC converter -> switching regulator -> power management IC -> semiconductor. Because the LM5013 integrates the high-side switch and uses a non-synchronous rectifier (external diode), designers trade synchronous-rectifier efficiency for simplified BOM and lower cost at high input voltages.
Key specifications include 6 V to 100 V input range, 1.2 V adjustable output, 3.5 A continuous load current, 50 ns minimum on-time, integrated 3.5 ms internal soft-start, input UVLO with thermal shutdown, and peak current-limit protection. The SO PowerPAD package gives a low thermal resistance (approximately 40 C/W) so a moderate copper pour supports full 3.5-A operation. The junction-temperature range of -40 C to +125 C supports industrial and automotive-grade designs (the LM5013-Q1 automotive variant is also available).
Architecturally, the LM5013 uses peak-current-mode control for fast line transient response and simple loop compensation. A 50 ns minimum on-time enables direct step-down from 100 V to 1.2 V at high switching frequency, reducing solution size. The internal 3.5 ms soft-start eliminates inrush current at power-up and simplifies sequencing in multi-rail systems.
Typical applications include industrial 24-V and 48-V bus regulation, factory-automation PLC I/O rails, automotive body-electronics (via the LM5013-Q1), PoE powered-device auxiliary rails, battery-charging front ends, and high-voltage LED lighting. The wide VIN makes it a natural fit anywhere a high-voltage rail must be dropped to a low-voltage logic or analog supply.
When designing with the LM5013, choose an external Schottky diode with reverse voltage at least 1.3x VIN(max) and sized to carry the full load current plus ripple. Use a low-ESR ceramic input capacitor to filter the switching spikes, and route the SW node as a small, tight loop to minimize EMI.
直接替換替代品，適用於 LM5013DDART — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM5013DDART （相同外形與佔位） — 差異在於 Package, Topology, Input Voltage Range, Junction Temperature Range, Output Voltage Range.
LM5013DDAR
✅ 直接替換聯絡詢價
查看資料表 →LM5013Q1DDARQ1
✅ 直接替換📋 參考替代品（不在目錄中）
LM5012Q1DDARQ1
✅ 直接替換📋 參考替代品（不在目錄中）
LMR16006XDDCR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS54360DDAR
✅ 直接替換聯絡詢價
查看資料表 →LM5013DDART 最大額定值與電氣特性
| 拓撲 | Non-synchronous buck (step-down) |
| 輸入電壓範圍 | 6 V to 100 V |
| Continuous Output Current | 3.5 A |
| Minimum Controllable On-Time | 50 ns |
| Internal Soft-Start | 3.5 ms (fixed) |
| Control Mode | Peak current mode |
| Input UVLO | Yes |
| Peak Current-Limit Protection | Yes |
| 過熱關機 | Yes |
| Junction Temperature Range | -40 C to +125 C |
| 封裝 | 8-Pin SO PowerPAD (DDA) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
LM5013DDART 腳位配置
| 腳位 1 | VIN — Input supply voltage (6 V to 100 V) |
| 腳位 2 | EN — Enable input (active high) |
| 腳位 3 | RT/SS — Resistor timing / soft-start control |
| 腳位 4 | FB — Feedback voltage input (internal reference 1.2 V) |
| 腳位 5 | COMP — Compensation network node |
| 腳位 6 | SW — Switch node (connects to external inductor and diode) |
| 腳位 7 | PGND — Power ground return for switch current |
| 腳位 8 | GND — Analog ground reference |
典型應用
LM5013DDART 適用於 6 應用s: Industrial 24-V and 48-V Bus Regulation, Factory Automation PLC I/O Rails, Automotive Body Electronics (LM5013-Q1), PoE Powered-Device Auxiliary Rails, Battery Charging Front Ends, High-Voltage LED Lighting.
Industrial 24-V and 48-V Bus Regulation
The LM5013DDART's 100-V input range and 3.5-A output capability suit industrial 24-V and 48-V bus rails directly. With VIN up to 100 V the part rides through 48-V telecom transients and inductive load spikes without external surge suppression. The 50 ns minimum on-time enables 48-V to 3.3-V conversion at high switching frequency, reducing inductor size and BOM cost.
推薦
Factory Automation PLC I/O Rails
PLC I/O modules running from 24-V industrial rails benefit from the LM5013DDART's wide VIN and integrated protections. The 3.5-A continuous output supports multi-channel relay drivers and analog front-ends; input UVLO and peak current-limit protect against brownouts and short circuits. Internal 3.5 ms soft-start eliminates inrush on hot-plug events common in factory cabinets.
推薦
Automotive Body Electronics (LM5013-Q1)
The LM5013-Q1 (AEC-Q100 variant of the same die as the LM5013DDART) powers body-electronics loads from 12-V and 24-V automotive batteries. Cold-crank and load-dump transients exceed 60 V, which the 100-V input range handles without external TVS clamps. The 3.5-A output powers infotainment, lighting, and sensor clusters directly with automotive-qualified reliability.
推薦
PoE Powered-Device Auxiliary Rails
PoE powered devices receive up to 57 V from the Ethernet cable, and the LM5013DDART's 100-V VIN handles PoE+ rails with margin. Designers step down to 12 V or 5 V for downstream point-of-load regulators; the 3.5-A output supports PoE+ class-4 powered devices and auxiliary functions. Non-synchronous topology keeps BOM cost low for cost-sensitive PD designs.
推薦
Battery Charging Front Ends
The LM5013DDART functions as a constant-voltage front end for lead-acid or Li-ion battery chargers when paired with a downstream current-mode controller. The 100-V input accepts 48-V telecom or 72-V industrial battery stacks directly. Internal protections including UVLO, peak current-limit, and thermal shutdown add a layer of robustness required for unattended battery systems.
推薦
High-Voltage LED Lighting
High-voltage LED strings driven from 48-V or 24-V industrial rails benefit from the LM5013DDART's wide VIN. The buck topology produces a constant current when paired with a sense resistor, and 3.5 A output drives high-brightness LED arrays in commercial and industrial fixtures. The non-synchronous architecture keeps the BOM small and inexpensive for cost-driven lighting designs.
推薦
推薦產品摘要
工程參考資料，適用於 LM5013DDART — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LM5013DDAR | LM5013Q1DDARQ1 | LM5012Q1DDARQ1 | LMR16006XDDCR | TPS54360DDA |
|---|---|---|---|---|---|---|
| Package | 8-SO PowerPAD (DDA) | 8-SO PowerPAD (DDA) - same | 8-SO PowerPAD (DDA) - same | 8-SO PowerPAD (DDA) - same | 8-SO PowerPAD (DDA) - same | 8-SO PowerPAD (DDA) - same |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Input Voltage Range | 6 V to 100 V | 6 V to 100 V - same | 6 V to 100 V - same | 6 V to 100 V - same | 4 V to 60 V - narrower | 4.5 V to 60 V - narrower |
| Continuous Output Current | 3.5 A | 3.5 A - same | 3.5 A - same | 2.5 A - lower (-29%) | 0.6 A - much lower | 3.5 A - same |
| Automotive Grade (AEC-Q100) | No (commercial) | No - same | Yes - AEC-Q100 | Yes - AEC-Q100 | No | No (TPS54360-Q1 is) |
| Topology | Non-synchronous buck | Non-synchronous buck - same | Non-synchronous buck - same | Non-synchronous buck - same | Non-synchronous buck - same | Non-synchronous buck - same |
| Soft-Start | Internal 3.5 ms | Internal 3.5 ms - same | Internal 3.5 ms - same | Internal 3.5 ms - same | Internal | Internal (SS pin) |
主要差異化特點
- Highest input voltage (100 V) in a non-synchronous buck family (對比TPS54360DDA)
- Automotive-grade variant available in same footprint (對比TPS54360DDA)
- Lower output current option in same footprint for cost optimization (對比LM5012Q1DDARQ1)
設計說明
Estimated: at VIN=48 V, VOUT=5 V, IOUT=3.5 A the LM5013DDART dissipates approximately 2 W in the high-side switch (assuming 90% efficiency). Keep the input capacitor, Schottky diode, and SW-node copper area as a tight, low-inductance loop to reduce ringing; place the input bypass capacitor within 5 mm of the VIN and PGND pins and use a low-ESR ceramic or polymer part rated for 100 V minimum.
The DDA SO PowerPAD package requires a sufficiently large copper pour on the top layer (at least 1 square inch of 2 oz copper) plus thermal vias connecting to inner layers for full 3.5-A output at high VIN-VOUT deltas. Per the TI LM5013 datasheet, the exposed pad is the primary thermal path and must be soldered to the PCB thermal land for the rated performance.
Choose a Schottky diode rated at 1.3x VIN(max) (so 130 V minimum for 100-V input) and sized to carry full load current plus ripple - using a 60-V or 100-V part at high VIN is the most common cause of field failures. Per the TI LM5013 datasheet, also do not omit the boot capacitor between BOOT and SW pins, and ensure the EN pin is not left floating - tie it to VIN through a resistor divider to set the UVLO threshold.
合規資訊
RoHS and REACH compliant per TI product page. LM5013DDART is commercial grade; choose LM5013Q1DDARQ1 for AEC-Q100 automotive.
