MIC5378YMT - 150mA Adj LDO, 1.2x1.2 TMLF-8 | Microchip
部品番号: MIC5378YMT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.56 | $5.60 |
| 100 | $0.45 | $45.00 |
| 500 | $0.38 | $190.00 |
| 1,000 | $0.32 | $320.00 |
MIC5378YMT 概要
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage, characterized by dropout voltages well under 1 V. In the broader component taxonomy, an LDO is a sub-class of linear regulator, which is itself a sub-class of voltage regulator, which sits under the power management IC umbrella, all of which are integrated circuits in the semiconductor family. The MIC5378 belongs to the small-package LDO category designed for portable, space-constrained electronics.
Key features of the MIC5378YMT include an input voltage range typically covering 2.5 V to 5.5 V (per the MIC5375/6/7/8 datasheet family), a low quiescent current suited to battery-powered designs, and an output that is user-adjustable via an external resistor divider. The part also includes an internal discharge transistor that pulls the output to ground when disabled via the EN pin, eliminating residual charge on downstream loads.
Architecturally, the MIC5378 uses a P-channel MOSFET pass element combined with an internal bandgap reference and error amplifier, providing tight line and load regulation. The 1.2x1.2 mm TMLF package integrates the die and exposed thermal pad for low thermal resistance in a footprint compatible with portable product miniaturization.
Typical applications include portable and battery-powered devices, wearable electronics, IoT sensor nodes, smartphones, and post-regulation for switching converters in compact subsystems. The MIC5378YMT is particularly useful as a clean post-regulator following a noisy DC-DC converter, providing low-noise rail conditioning for RF, audio, or precision analog blocks.
When designing with this part, place input and output ceramic bypass capacitors as close as possible to the IC pins and ensure the EN logic level is properly driven. The auto-discharge feature should be considered when sequencing multiple rails, as disabled outputs will be pulled low and may briefly source current from downstream caps.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond what is published in the manufacturer datasheet, helping engineers quickly evaluate the MIC5378YMT for new designs and BOM risk mitigation.
ドロップイン代替品: MIC5378YMT — 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。
クイック比較ツール — 並列比較する代替部品を選択:
MIC5377YMT-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MIC5376YMT-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MIC5375YMT-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MIC5378YMT-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MIC5378YMT 最大定格＆電気的特性
| Regulator Type | Low-Dropout (LDO) Linear Regulator |
| Output Polarity | Positive |
| 出力タイプ | Adjustable |
| 出力数 | 1 |
| 最大出力電流 | 150 mA |
| イネーブルピン | Yes (active-high, with internal auto-discharge) |
| パッケージ | 8-TMLF (1.2 mm x 1.2 mm), also called 8-pin Thin MLF |
| 実装タイプ | Surface Mount |
| Lead Free / RoHS | Lead Free, RoHS Compliant |
| Lifecycle Stage | Active |
MIC5378YMT ピン構成
| ピン 1 | VIN — Input supply voltage to the LDO |
| ピン 2 | GND — Ground reference |
| ピン 3 | EN — Enable input (active-high); when low, output is actively discharged |
| ピン 4 | ADJ — Adjustable feedback node; connect to external resistor divider to set VOUT |
| ピン 5 | NC — Not connected internally (per datasheet) |
| ピン 6 | VOUT — Regulated output voltage |
| ピン 7 | NC — Not connected internally (per datasheet) |
| ピン 8 | NC — Not connected internally (per datasheet) |
主な用途
MIC5378YMT の用途: 6 件s: Wearable Electronics Power Rails, IoT Sensor Node Power Management, Smartphone and Portable Consumer Subsystems, Post-Regulation after DC-DC Converter, Industrial Sensor and Process Control Modules, Medical Wearable and Health Monitoring Devices.
Wearable Electronics Power Rails
The MIC5378YMT's 1.2x1.2 mm TMLF-8 package and 150 mA output make it a strong fit for wearable devices such as smart watches, fitness bands, and hearing aids, where PCB area is measured in square millimeters. The adjustable output allows the same SKU to power multiple subsystems - a 1.8 V rail for a low-power MCU, a 2.8 V rail for a BLE radio, or a 3.3 V rail for a small OLED display - by changing only the external feedback resistors. Per the Microchip product page, the family's active output discharge also prevents residual voltage on sensitive analog front-ends when the rail is switched off, reducing leakage paths in always-on architectures.
おすすめ
IoT Sensor Node Power Management
Battery-powered IoT sensor nodes - environmental sensors, smart home endpoints, asset trackers - typically draw 50-120 mA peaks during radio transmission and only microamps in sleep. The MIC5378YMT's 150 mA rating covers these peaks comfortably while the EN pin allows a host MCU to duty-cycle the rail and the internal auto-discharge ensures clean power-down between transmissions. According to the Microchip MIC5375/6/7/8 datasheet, the small TMLF-8 footprint (1.2x1.2 mm) and external resistor adjustment make it easy to support multiple sensor variants on a single PCB layout, reducing SKU proliferation.
おすすめ
Smartphone and Portable Consumer Subsystems
Inside smartphones, tablets, and portable media players, multiple low-current rails (camera, display bias, audio CODEC, sensor hub) require compact, efficient LDOs that fit on already-dense main boards. The MIC5378YMT's 1.2x1.2 mm TMLF-8 footprint and adjustable output address this need, providing flexibility for platforms that ship in multiple SKUs targeting different geographies or carriers. Per the Microchip datasheet family, the LDO's P-MOSFET pass architecture provides low dropout and ground-pin current, both critical for extending battery life across multi-day standby scenarios.
おすすめ
Post-Regulation after DC-DC Converter
Switching converters are efficient but introduce ripple in the 10-100 mV range that can disrupt RF, audio, and precision analog circuits. The MIC5378YMT can be cascaded after a small buck regulator to clean up the rail, with its adjustable output letting designers set the exact post-regulator voltage independent of the upstream DC-DC output. According to the Microchip product page, the EN pin and active output discharge allow the LDO to be sequenced after the upstream converter stabilizes, preventing current surges during startup. This two-stage architecture (DC-DC + LDO) is common in RF transceivers and audio codecs.
おすすめ
Industrial Sensor and Process Control Modules
Industrial sensor modules - 4-20 mA loop-powered transmitters, RTD conditioners, strain gauge amplifiers - require stable low-noise rails from compact LDOs to maintain measurement accuracy over temperature. The MIC5378YMT's adjustable output and small TMLF-8 package suit the cramped interior of DIN-rail or PCB-mounted sensor modules, while its active output discharge prevents undefined logic states on microcontroller I/O when the rail is switched off during fault conditions. Per the Microchip datasheet family, the part is specified for industrial temperature grades suitable for factory floor environments.
おすすめ
Medical Wearable and Health Monitoring Devices
Continuous glucose monitors, pulse oximeters, ECG patches, and other medical wearables demand ultra-small, low-quiescent regulators to maximize battery life while powering analog signal chains that measure microvolt-level physiological signals. The MIC5378YMT's 1.2x1.2 mm TMLF-8 footprint fits inside body-worn patches where every cubic millimeter matters, and the adjustable output allows a single BOM to support multiple device variants (e.g., adult vs pediatric). According to the Microchip product page, the family's low-dropout P-MOSFET architecture minimizes ground-pin current, a critical parameter for extending the operational life of implanted and body-worn devices between battery changes.
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: MIC5378YMT — 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 | MIC5377YMT-TR | MIC5376YMT-TR | MIC5375YMT-TR | MIC5378YMT-TR |
|---|---|---|---|---|---|
| Package | 8-TMLF (1.2x1.2 mm) | 8-TMLF (1.2x1.2 mm) - same | 8-TMLF (1.2x1.2 mm) - same | 8-TMLF (1.2x1.2 mm) - same | 8-TMLF (1.2x1.2 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Output Type | Adjustable | Adjustable | Fixed (1.2/1.5/1.8/2.5/2.8/3.0/3.3 V) | Fixed (no EN pin in same family variant) | Adjustable |
| Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA |
| Auto-Discharge on Disable | Yes (internal resistive load) | No | Yes | No | Yes |
| Enable Pin | Yes (active-high) | Yes (active-high) | Yes (active-high) | No (always-on variant) | Yes (active-high) |
| RoHS / Lead Free | RoHS Compliant / Lead Free | RoHS Compliant / Lead Free | RoHS Compliant / Lead Free | RoHS Compliant / Lead Free | RoHS Compliant / Lead Free |
| Lifecycle Status | Active | Active | Active | Active | Active |
主な差別化要因
- Adjustable output with internal active discharge on disable （vs MIC5377YMT-TR)
- Adjustable output voltage vs fixed-voltage siblings （vs MIC5376YMT-TR)
- Tiny 1.2x1.2 mm TMLF-8 footprint with EN pin （vs MIC5375YMT-TR)
設計ノート
Place the input and output ceramic bypass capacitors as close as possible to the MIC5378YMT VIN and VOUT pins. According to the Microchip MIC5375/6/7/8 datasheet, a 1 uF X7R or X5R ceramic on each side is the typical recommendation; use 0402 or smaller to match the 1.2x1.2 mm package scale. The exposed thermal pad (EP) on the underside must be soldered to a copper pour with at least 4 thermal vias to a ground plane for proper heat dissipation, even at the modest 150 mA load.
Route the ADJ feedback traces away from noisy switching nodes and keep the feedback resistor divider physically close to the ADJ pin to minimize parasitic capacitance. Per Microchip application guidance for the MIC5378 family, long ADJ traces can introduce instability or worsen PSRR at high frequencies. If the design uses a switching converter nearby, place the LDO post-regulator on the opposite side of the PCB or behind a ground-plane shield to reduce coupled ripple.
Do not exceed the MIC5378YMT's absolute maximum input voltage; the MIC5375/6/7/8 family is designed for low-voltage rails typically up to 5.5 V. Use 1% or better tolerance resistors for the ADJ divider to maintain output voltage accuracy, since the reference tolerance directly multiplies through the divider ratio. If replacing the MIC5378 with a fixed-voltage sibling (MIC5375/6), confirm that the EN pin behavior matches your sequencer - the MIC5375 omits the EN pin entirely and is always on.
コンプライアンス情報
RoHS compliant and lead-free per Microchip product page and distributor listings. AEC-Q100 status not applicable - this part is targeted at consumer/portable/IoT, not automotive. Halogen-free status not explicitly stated in the verified data.
