LTM8033IY#PBF - 36V, 3A Ultralow Noise EMC µModule | Analog Devices
MPN： LTM8033IY#PBF ✓ 啟用中LTM8033IY#PBF 概覽
A µModule regulator is a system-in-package (SiP) DC/DC converter that absorbs the entire switching power supply into a single, characterized black box. Compared with a discrete buck regulator, the µModule integrates the power stage magnetics, compensation network and EMI filtering inside the laminate package, so the engineer only needs to add input/output bulk capacitors and feedback resistors. The LTM8033 sits in the broader hierarchy of: DC/DC converter → switching regulator → buck regulator → power management IC → semiconductor.
Key features include a selectable switching frequency range of 200 kHz to 2.4 MHz for tuning against system noise harmonics, current-mode control for stable loop behavior, EN55022 Class B radiated-emission compliance with standard filter components, parallel current sharing for outputs above 3 A, programmable soft-start, and a SnPb or RoHS-compliant finish. The internal architecture uses a peak current-mode controller driving synchronous MOSFETs through an integrated inductor, with internal bypass and EMI capacitors already sized for conducted-emission mitigation.
Typical applications include point-of-load regulation for industrial 24V bus systems, FPGA/ASIC and µP core or I/O rails, low-noise analog front-end and sensor power, automotive and heavy-equipment 12V/24V supply rails, test and measurement instrumentation, and any noise-sensitive board that needs a clean, low-ripple rail without the radiated EMI typical of conventional buck designs.
Design considerations: use a 4.7 µF to 10 µF input capacitor plus a small 0.1 µF HF bypass, set VOUT with a 1% resistor divider, choose RT for the desired switching frequency, and parallel multiple LTM8033s through the SHARE pin for higher load current. Mind the BGA-76 land pattern and provide adequate bottom-side copper for thermal dissipation.
This page synthesizes distributor stock and pricing, verified drop-in alternatives in the same BGA-76 footprint, and practical design notes not consolidated in the manufacturer datasheet alone.
直接替換替代品，適用於 LTM8033IY#PBF — 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。
LTM8033EY#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTM8033MPV#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTM8033MPY
✅ 直接替換📋 參考替代品（不在目錄中）
LTM8033IY
✅ 直接替換📋 參考替代品（不在目錄中）
LTM8033IY#PBF
✅ 直接替換聯絡詢價
查看資料表 →LTM8033IY#PBF 最大額定值與電氣特性
| 拓撲 | Non-Isolated Step-Down (Buck) µModule Regulator |
| 輸入電壓範圍 | 3.6 V to 36 V |
| 輸出電壓範圍 | 0.8 V to 24 V |
| 最大輸出電流 | 3 A |
| Switching Frequency Range | 200 kHz to 2.4 MHz (selectable) |
| Control Method | Current Mode Control |
| EMC Compliance | EN55022 Class B radiated (with standard filter components) |
| Current Share | Yes (SHARE pin, parallel multiple units) |
| 軟啟動 | Programmable |
| 封裝 | BGA-76, 11.25 mm × 15 mm × 4.32 mm |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40 °C to +125 °C (internal, I-grade) |
| MSL 等級 | 3 |
| RoHS 狀態 | RoHS Compliant (PBF suffix) |
| EMI Feature | Ultralow Noise EMC, internal filtering |
LTM8033IY#PBF bga-76, 11.25 mm × 15 mm × 4.32 mm 腳位配置指南
LTM8033IY#PBF（bga-76, 11.25 mm × 15 mm × 4.32 mm 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： LTM8033IY#PBF.
請參閱 資料表 以查看完整腳位配置。
典型應用
LTM8033IY#PBF 適用於 6 應用s: Industrial 24V Bus Point-of-Load, FPGA / ASIC Core and I/O Rail Power, Automotive and Heavy-Equipment 12V/24V Rails, Low-Noise Analog Front-End Power, Test and Measurement Instrumentation, Distributed Power and Battery-Powered Systems.
Industrial 24V Bus Point-of-Load
The LTM8033IY#PBF's 3.6V to 36V input range and 3A output make it a natural fit for industrial 24V bus point-of-load regulation. It accepts the wide swings of a 24V industrial supply while delivering a clean 0.8V to 24V rail to downstream FPGAs, ASICs and µP cores. The integrated µModule architecture eliminates discrete inductor EMI design, cutting time-to-market for industrial PLCs and factory automation. EN55022 Class B compliance reduces certification risk in factory-floor installations.
推薦
FPGA / ASIC Core and I/O Rail Power
The LTM8033IY#PBF delivers up to 3A at voltages between 0.8V and 24V, which directly covers modern FPGA core (0.8V-1.2V), I/O (1.8V-3.3V) and auxiliary (5V-12V) rails. The selectable 200 kHz to 2.4 MHz switching frequency lets the designer avoid sensitive harmonics in mixed-signal boards. Current-mode control and the integrated compensation network simplify loop stability analysis. SHARE-pin paralleling supports currents above 3A for high-density FPGA/ASIC power trees.
推薦
Automotive and Heavy-Equipment 12V/24V Rails
Wide 3.6V to 36V input lets the LTM8033IY#PBF tolerate load-dump transients on 12V and 24V automotive buses while delivering a stable logic rail to body-control, ADAS and telematics modules. The -40°C to +125°C internal operating temperature grade suits underhood and cabin thermal environments. The integrated µModule reduces PCB area in space-constrained ECUs, while EN55022 Class B EMI compliance simplifies vehicle-level EMC testing.
推薦
Low-Noise Analog Front-End Power
Sensor signal chains and precision ADCs require ultra-low-rail noise to maintain dynamic range. The LTM8033IY#PBF is designed for ultralow-noise EMC operation, with internal filtering and the µModule package shielding the switching node from sensitive analog traces. Using a 1 MHz switching frequency out-of-band from signal bandwidth prevents switching ripple from coupling into ADC samples. Programmable soft-start avoids inrush coupling into the analog front end.
推薦
Test and Measurement Instrumentation
Benchtop and production-test instruments need clean, isolated rails for sensitive analog measurement. The LTM8033IY#PBF's wide VIN/VOUT range covers bench-supply-derived inputs and the internal 0.8V-24V outputs required by modern DACs, ADCs and DSPs. EN55022 Class B radiated-emission compliance is essential for laboratory EMC. The integrated µModule reduces design cycle time and the SHARE pin enables paralleling for higher-current benchtop PSU channels.
推薦
Distributed Power and Battery-Powered Systems
Battery-powered and distributed-power applications benefit from the LTM8033IY#PBF's 3.6V minimum input, which lets it operate from deeply discharged multi-cell battery stacks, and 36V maximum input for high-voltage bus distribution. The programmable soft-start prevents large inrush currents that could collapse battery voltage. Low EMI signature allows denser PCB placement in portable and remote-monitoring equipment without violating radiated-emission limits.
推薦
推薦產品摘要
工程參考資料，適用於 LTM8033IY#PBF — 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 | LTM8033EY#PBF | LTM8033MPV#PBF | LTM8033MPY | LTM8033IY |
|---|---|---|---|---|---|
| Package | BGA-76 (11.25mm × 15mm × 4.32mm) | BGA-76 - same | BGA-76 - same | BGA-76 - same | BGA-76 - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Voltage Range | 3.6 V to 36 V | 3.6 V to 36 V | 3.6 V to 36 V | 3.6 V to 36 V | 3.6 V to 36 V |
| Output Voltage Range | 0.8 V to 24 V | 0.8 V to 24 V | 0.8 V to 24 V | 0.8 V to 24 V | 0.8 V to 24 V |
| Maximum Output Current | 3 A | 3 A | 3 A | 3 A | 3 A |
| Operating Temperature Grade | I-grade (-40°C to +125°C internal) | E-grade (0°C to 125°C internal) | MPV military grade | MPY military plastic | I-grade (-40°C to +125°C internal) |
| Switching Frequency Range | 200 kHz to 2.4 MHz | 200 kHz to 2.4 MHz | 200 kHz to 2.4 MHz | 200 kHz to 2.4 MHz | 200 kHz to 2.4 MHz |
| EMC Compliance | EN55022 Class B (with std filter) | EN55022 Class B (with std filter) | EN55022 Class B (with std filter) | EN55022 Class B (with std filter) | EN55022 Class B (with std filter) |
| RoHS Status | RoHS Compliant (#PBF) | RoHS Compliant (#PBF) | RoHS Compliant (#PBF) | SnPb or RoHS option | Non-RoHS (no #PBF) |
主要差異化特點
- True µModule integration eliminates discrete inductor EMI design (對比Discrete buck regulator designs using external MOSFETs and inductors)
- Industrial -40°C to +125°C internal operating temperature (對比LTM8033EY#PBF (extended-grade, 0°C to 125°C))
- Parallelable via SHARE pin for >3A systems (對比Single-output 3A discrete buck regulators)
設計說明
Use a 4.7 µF to 10 µF ceramic input capacitor placed as close as possible to the VIN and GND balls, plus a 0.1 µF HF bypass. For output, use a 22 µF or larger ceramic bank plus a 100 µF bulk cap to handle 3A load transients. Keep all power-trace loops tight and place the bottom-side copper pour directly under the BGA-76 to act as a thermal spreader.
At VIN=24V, VOUT=5V, IOUT=3A, the LTM8033 dissipates an estimated 57W (P = (VIN-VOUT) × IOUT = 19V × 3A). Even with the µModule's integrated thermal management, this exceeds the safe-operating limit; derate VOUT or VIN for high-input applications, or parallel multiple units via the SHARE pin to share both current and heat. Always check the datasheet SOA curves for your specific VIN/VOUT/IOUT combination.
Do not omit the RT resistor — it sets the switching frequency (200 kHz to 2.4 MHz) and incorrect values can push the part outside its EMC optimization window. Tie SYNC to GND if unused, or drive it with an external clock within ±20% of the RT-set frequency. The RUN/SS pin must have a soft-start capacitor; leaving it floating can cause inrush faults on hot-plug events.
Place input capacitors directly adjacent to the VIN balls on the top layer with short, wide traces to minimize switching-loop inductance. The BGA-76 requires via-in-pad or micro-via construction for the inner-row balls; follow the land pattern in the datasheet's package drawing appendix. Keep sensitive analog traces on the opposite side of the board with a continuous ground-plane reference.
The LTM8033 meets EN55022 Class B radiated emissions with standard filter components on the input — typically a common-mode choke plus a 4.7 µF X7R ceramic. For conducted emissions beyond the standard filter, add a π-filter (LC) at the input. Switching-frequency selection via RT can be used to avoid sensitive harmonics (e.g., 455 kHz IF band) on the board.
合規資訊
RoHS compliance indicated by #PBF finish suffix per Analog Devices ordering nomenclature. AEC-Q100 not qualified — not an automotive-qualified part by default. REACH, halogen-free and conflict-minerals status not stated in the available web data and marked unknown.
