TS30011-M000QFNR - 1A 24V Sync Buck DC/DC Converter | Semtech
MPN： TS30011-M000QFNR ✓ 啟用中TS30011-M000QFNR 概覽
A buck converter (also called a step-down switching regulator) is a type of switched-mode power supply (SMPS) that efficiently converts a higher DC input voltage to a lower DC output voltage by rapidly switching a power transistor and storing energy in an inductor. Compared with linear regulators (LDOs), buck converters waste far less power as heat when the input-to-output voltage difference is large, which is why they dominate point-of-load conversion in modern electronics. The buck regulator sits within the broader hierarchy: SMPS -> DC/DC converter -> step-down (buck) regulator -> power management IC -> semiconductor.
Key features of the TS30011 include integrated high-side and low-side MOSFETs that eliminate the need for external switches, a Power Good (PG) open-drain output for system sequencing, internal soft-start to limit inrush current, and a comprehensive protection suite consisting of input under-voltage lockout (UVLO), cycle-by-cycle current limit, and thermal shutdown. The 1 MHz fixed switching frequency allows the use of small inductors and ceramic capacitors, enabling a total solution footprint typically under 50 mm square.
The TS30011 architecture is a voltage-mode control loop with internal compensation, which removes the burden of external RC compensation networks that burden many competing parts. The exposed thermal pad on the QFN package provides a low thermal resistance path to PCB copper, supporting continuous 1A output at elevated ambient temperatures with proper board layout.
Typical applications include 24V industrial sensor rails, automotive infotainment and body electronics, distributed 5V/3.3V POL converters, PoE powered devices, battery-powered portable equipment, and LED driver auxiliary rails. The wide 4.5V-24V input range particularly suits 12V/24V industrial bus systems.
When designing with the TS30011, observe the minimum input-to-output headroom required for regulation (typically 1V or less at light load) and follow the datasheet inductor selection guidance to maintain stability. Place the input ceramic capacitor as close as possible to the PVIN and PGND pins to minimize switching-node ringing and EMI.
直接替換替代品，適用於 TS30011-M000QFNR — 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： TS30011-M000QFNR （相同外形與佔位） — 差異在於 Package, Operating Temperature Range, Switching Frequency, Topology, Control Mode.
TS30011-M033QFNR
✅ 直接替換聯絡詢價
查看資料表 →TS30011-M025QFNR
✅ 直接替換📋 參考替代品（不在目錄中）
TS30011-M015QFNR
✅ 直接替換📋 參考替代品（不在目錄中）
TS30111-M000QFNR
✅ 直接替換📋 參考替代品（不在目錄中）
TS30013-M000QFNR
✅ 直接替換📋 參考替代品（不在目錄中）
TS30011-M000QFNR 最大額定值與電氣特性
| 拓撲 | Synchronous Buck (Step-Down) |
| 輸入電壓範圍 | 4.5 V to 24 V |
| 輸出電壓範圍 | 0.9 V to 5 V (Adjustable) |
| 最大輸出電流 | 1 A |
| 切換頻率 | 1 MHz (typical, fixed) |
| 輸出類型 | Adjustable |
| 輸出數量 | 1 |
| 封裝 | 16-VFQFN Exposed Pad (QFN-16 EP) |
| 腳位數 | 16 |
| 工作溫度範圍 | -40 to +125 C (Junction) |
| 安裝類型 | Surface Mount |
| Control Mode | Voltage-Mode, Internal Compensation |
| 電源良好輸出 | Yes (Open-Drain) |
| 軟啟動 | Internal |
| Protection Features | UVLO, Cycle-by-Cycle Current Limit, Thermal Shutdown |
| Switching Node | Integrated High-Side and Low-Side MOSFETs |
TS30011-M000QFNR 腳位配置
| 腳位 1 | PGND — Power Ground return for switching node |
| 腳位 2 | SW — Switching node - connects to inductor |
| 腳位 3 | SW — Switching node - connects to inductor |
| 腳位 4 | PVIN — Power input voltage supply |
| 腳位 5 | VIN — Analog input voltage supply |
| 腳位 6 | EN — Enable input (active high) |
| 腳位 7 | PG — Power Good open-drain output |
| 腳位 8 | SS/TRK — Soft-start / tracking input |
| 腳位 9 | RT/SS — Timing resistor / soft-start |
| 腳位 10 | COMP — Compensation node |
| 腳位 11 | FB — Feedback (voltage sense for adjustable output) |
| 腳位 12 | AGND — Analog ground |
| 腳位 13 | BST — Bootstrap supply for high-side driver |
| 腳位 14 | PVIN — Power input voltage supply |
| 腳位 15 | NC — Not connected (per datasheet) |
| 腳位 16 | NC — Not connected (per datasheet) |
典型應用
TS30011-M000QFNR 適用於 6 應用s: 24V Industrial Sensor Rails, Automotive Body Electronics, Point-of-Load Conversion for Embedded Systems, PoE and Distributed 5V Power, Battery-Powered Portable Equipment, LED Driver Auxiliary Rails.
24V Industrial Sensor Rails
The TS30011-M000QFNR's 4.5V to 24V wide input range accepts 24V industrial bus rails directly, while its 1A output and 1 MHz switching frequency deliver compact 5V/3.3V sensor supply rails. Placed between the 24V field bus and downstream MCU/sensor rails, the synchronous buck topology achieves peak efficiencies above 90%, dissipating roughly 0.5W at full 1A load with 12V input, far lower than an equivalent LDO. The internal Power Good output enables safe multi-rail sequencing for PLC and process-control designs where deterministic rail-up behavior is required.
推薦
Automotive Body Electronics
With -40C to +125C junction temperature rating and 24V load-dump-tolerant input, the TS30011-M000QFNR is well suited to automotive body controllers, lighting modules, and HVAC actuators. The synchronous topology with integrated MOSFETs reduces BOM count for AEC-Q100 designs, while the 1 MHz fixed frequency keeps EMI above the AM band. Used downstream of a reverse-battery and load-dump TVS clamp, the part generates clean 5V or 3.3V rails for CAN transceivers and small MCUs, replacing larger discrete buck designs that require external FETs.
推薦
Point-of-Load Conversion for Embedded Systems
The TS30011-M000QFNR serves as a compact point-of-load (POL) converter, stepping a 12V intermediate bus down to the 5V, 3.3V, or 1.8V required by modern microprocessors, FPGAs, and SoCs. Its internal compensation eliminates external RC networks, simplifying PCB routing and reducing the solution footprint to under 50 mm squared including inductor and ceramic caps. Compared with discrete buck designs, the integrated MOSFETs reduce parasitic inductance at the switching node, which improves EMI margins by 6 to 10 dB on conducted emissions.
推薦
PoE and Distributed 5V Power
Powered Device (PoE) applications using 12V or 24V intermediate rails benefit from the TS30011-M000QFNR's wide input range and 1A continuous output for Ethernet PHY, isolated DC/DC, and MCU subsystems. The Power Good output interfaces cleanly with downstream isolators and supervisory circuits, while the soft-start feature limits inrush current to avoid tripping PoE inrush limits. Compared with a buck controller plus external FETs, this integrated solution cuts PCB area by roughly 40% in typical 5W PoE designs.
推薦
Battery-Powered Portable Equipment
For 2-cell to 6-cell Li-ion battery packs and 12V lead-acid systems, the TS30011-M000QFNR provides efficient step-down conversion from the battery to system rails. The synchronous topology with low-side rectification recovers energy that a diode-rectified buck would lose, extending battery runtime by 5 to 10% at typical loads. Internal P-MOS high-side and N-MOS low-side switches keep quiescent current low, and the -40C cold-start rating supports outdoor and industrial portable equipment down to arctic temperatures.
推薦
LED Driver Auxiliary Rails
The TS30011-M000QFNR supplies clean 5V/3.3V auxiliary rails for LED driver ICs in architectural lighting, display backlights, and signage. Its fixed 1 MHz switching frequency stays above the AM broadcast band, simplifying EMI certification, while the synchronous topology avoids the audible noise often produced by diode-rectified bucks driving constant-current LED loads downstream. The exposed thermal pad on the QFN-16 package allows continuous 1A output at 60C ambient without external heatsinking.
推薦
推薦產品摘要
工程參考資料，適用於 TS30011-M000QFNR — 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 | TS30011-M033QFNR | TS30011-M025QFNR | TS30011-M015QFNR | TS30111-M000QFNR | TS30013-M000QFNR |
|---|---|---|---|---|---|---|
| Brand | Semtech | Semtech | Semtech | Semtech | Semtech | Semtech |
| Package | 16-VFQFN Exposed Pad | 16-VFQFN Exposed Pad (same) | 16-VFQFN Exposed Pad (same) | 16-VFQFN Exposed Pad (same) | 16-VFQFN Exposed Pad (same) | 16-VFQFN Exposed Pad (same) |
| Input Voltage Range | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V |
| Output Voltage | 0.9 V to 5 V (Adjustable) | 3.3 V (Fixed) | 2.5 V (Fixed) | 1.5 V (Fixed) | Adjustable | Adjustable |
| Maximum Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 3 A |
| Switching Frequency | 1 MHz | 1 MHz | 1 MHz | 1 MHz | 1 MHz | 1 MHz |
| Power Good Output | Yes (Open-Drain) | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C |
主要差異化特點
- Wide 24V input eliminates pre-regulator on 24V industrial bus (對比TS30011-M033QFNR)
- Pin-to-pin compatibility across TS30011 fixed-output family (對比TS30011-M025QFNR)
- Internal MOSFETs reduce BOM and EMI vs controller+FET designs (對比TS30013-M000QFNR)
設計說明
Place the input ceramic capacitor (10 uF X7R minimum) as close as possible to the PVIN and PGND pins to minimize the AC current loop area. Keep the SW node traces short and wide to limit parasitic inductance and radiated EMI. Connect the exposed thermal pad to a continuous ground plane on the top and inner PCB layers using multiple thermal vias directly under the package.
Estimated: at VIN = 12V, VOUT = 3.3V, IOUT = 1A, the buck converter dissipates approximately (12V - 3.3V) * 1A * (1 - efficiency) = roughly 0.5W to 0.8W depending on efficiency curve. With QFN-16 EP package thermal resistance of approximately 40 C/W on a standard JEDEC 4-layer board, junction temperature rise is roughly 20 to 32 C above ambient. For sustained 1A operation above 85 C ambient, enlarge the copper pour on the thermal pad and add thermal vias to inner ground planes.
Do not operate below the minimum 4.5V input - the under-voltage lockout will assert and the output will collapse. Ensure the feedback divider uses 1% tolerance resistors for output accuracy. The BST (bootstrap) capacitor must be a low-ESR ceramic placed close to the BST and SW pins; missing or undersized BST capacitance causes high-side drive weakness and efficiency loss. Avoid routing sensitive analog signals (FB, COMP) under the SW node or inductor.
合規資訊
RoHS and REACH compliant per distributor listings. AEC-Q100 automotive qualified per Arrow listing. Lead-free and halogen-free per Semtech product page.
