MP1476GTF-Z - 18V, 2A, 800kHz Sync Step-Down Converter | MPS
MPN: MP1476GTF-Z ✓ AktifMP1476GTF-Z Ringkasan
A buck (step-down) DC-DC switching converter is a power management integrated circuit that converts a higher DC input voltage into a lower, regulated DC output voltage by chopping the input with a high-frequency switch and filtering the resulting waveform through an LC network. Buck converters sit within the broader hierarchy of voltage regulators > DC-DC converters > switching regulators > power management ICs > semiconductors, and they are the dominant topology for high-efficiency point-of-load conversion in modern electronics.
The MP1476's three key strengths are: (1) synchronous rectification with internal high-side and low-side MOSFETs eliminating the need for an external Schottky diode; (2) high 800 kHz switching frequency allowing tiny inductors and small ceramic output caps; and (3) Power-Save Mode (PSM) at light load, raising efficiency to >80% even at 10 mA loads. Additional features include internal soft-start to limit inrush current, cycle-by-cycle over-current protection, thermal shutdown, and an open-drain power-good indicator.
Technically the device uses a peak-current-mode control architecture with an internal 0.8V reference. The high-side MOSFET's RDS(on) is approximately 100 mOhm and the low-side approximately 80 mOhm, which together minimize conduction loss. The wide 4.2V-18V input range supports both 5V and 12V system rails, including USB-PD, two-cell Li-ion battery packs, and industrial 12V bus power, while the small SOT-563 footprint suits space-constrained portable designs.
Typical applications include USB Type-C/PD powered accessories, portable industrial handheld terminals, 12V-to-point-of-load conversion in embedded modules, single-cell Li-ion battery chargers (as a downstream converter), and FPGA/MCU core rail generation. The wide input tolerance and 2A output make it a workhorse for distributed power architectures.
When designing with the MP1476, the inductor (typically 2.2 uH to 4.7 uH) and output capacitor (22 uF X5R minimum) selection dominate ripple performance. Keep the input capacitor loop compact to minimize switching noise injection, and avoid routing sensitive analog signals directly beneath the SW node.
This page synthesizes XAIPART distributor pricing tiers, validated same-family MPS drop-in alternatives, and SOT-563 footprint cross-references in a single comparison table that the manufacturer datasheet and standard distributor listings do not present side-by-side.
Alternatif penggantian untuk MP1476GTF-Z — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MP1476GTF-Z (sama faktor bentuk dan footprint) — berbeda di dalam Continuous Output Current, Package, Protection Features, RoHS Status, Switching Frequency.
MP1476GTF-P
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MP1652GTF-Z
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MP1653GTF-Z
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MP1476GTF
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MP1476GTF-Z Rating Maksimal & Karakteristik Listrik
| Topologi | Synchronous Buck (Step-Down) |
| Rentang Tegangan Masukan | 4.2 V to 18 V |
| Rentang Tegangan Output | 0.8 V to 10 V (adjustable) |
| Continuous Output Current | 2 A |
| Frekuensi Pengganti | 800 kHz (typical) |
| Tipe Output | Adjustable (external resistor divider) |
| Jumlah Output | 1 |
| Paket | SOT-563 (6-pin, TF suffix) |
| Tipe Mounting | Surface Mount |
| Diresinkronkan | Yes (internal high-side + low-side MOSFETs) |
| Operating Mode | Synchronous mode + Power-Save Mode at light load |
| Mulai Dengan Lebih Lambat | Internal |
| Protection Features | OCP, OTP, OVP (per datasheet) |
| Status RoHS | Compliant (per -Z suffix) |
Konfigurasi Pin MP1476GTF-Z
| Pin produk 1 | BST — Bootstrap - connects to external capacitor between BST and SW for high-side gate drive |
| Pin produk 2 | IN — Input supply voltage (4.2V to 18V) - connect to local 1uF X7R decoupling |
| Pin produk 3 | SW — Switch node - connects to external inductor and bootstrap capacitor |
| Pin produk 4 | GND — Ground - connect to bottom exposed pad and large PCB ground pour |
| Pin produk 5 | FB — Feedback - external resistor divider sets VOUT, internal reference 0.8V |
| Pin produk 6 | EN — Enable input - logic high enables the regulator, logic low enters low-Iq shutdown |
Aplikasi Umum
MP1476GTF-Z cocok untuk 6 aplikasis: USB Type-C / PD Powered Accessories, 12V-to-Point-of-Load Conversion in Industrial Modules, Portable Handheld Terminal Power, FPGA / MCU Core Rail Generation, Single-Cell Li-ion to 5V Boost-Buck Cascaded Load, IoT Sensor Node Power Subsystem.
USB Type-C / PD Powered Accessories
The MP1476GTF-Z's 4.2V to 18V input range and 2A output make it a strong fit for USB Type-C/PD downstream ports that negotiate 5V/9V/12V/15V profiles. It can step 9V or 12V PD profiles down to 3.3V or 5V rails at 2A for downstream peripherals such as hubs, docks, and powered cables. The 800 kHz switching frequency keeps the inductor below 3 mm and supports compact SOT-563 layout, while the wide input tolerance handles PD voltage transitions without dropout.
Direkomendasikan
12V-to-Point-of-Load Conversion in Industrial Modules
In 12V industrial bus systems (ISA-style backplanes, distributed sensor modules), the MP1476GTF-Z drops the 12V rail to 3.3V, 5V, or 1.8V local rails at up to 2A with synchronous rectification reaching >90% efficiency. The SOT-563 footprint supports dense PCB layouts where multiple POL converters populate a small carrier board. Power-Save Mode maintains efficiency at light standby loads, critical for always-on industrial nodes with sleep current budgets under 100 uA.
Direkomendasikan
Portable Handheld Terminal Power
Handheld barcode scanners, rugged tablets, and field-service terminals rely on 2-cell Li-ion battery packs (6V-8.4V) or 12V adapters. The MP1476GTF-Z efficiently converts this variable input to stable 3.3V/2A logic rails for SoC, Wi-Fi, and display subsystems. The 1.6x1.6 mm SOT-563 footprint preserves board real estate for compact handheld enclosures, while internal soft-start prevents inrush glitches that would disturb battery fuel-gauge readings.
Direkomendasikan
FPGA / MCU Core Rail Generation
The MP1476GTF-Z generates 1.0V to 3.3V core rails from a 5V or 12V intermediate bus for low-power FPGAs, Cortex-M4/M7 MCUs, and small SoCs drawing up to 2A peak. The 800 kHz switching frequency moves noise above the AM radio band, simplifying EMC compliance, and the synchronous topology eliminates the external Schottky diode, reducing BOM cost and board area. Internal soft-start and cycle-by-cycle OCP protect sensitive processor cores during power-up transients.
Direkomendasikan
Single-Cell Li-ion to 5V Boost-Buck Cascaded Load
As a downstream converter following a boost stage from a single Li-ion cell (3.0V-4.2V) to 5V, the MP1476GTF-Z efficiently drops to 3.3V or 1.8V at 2A for downstream logic. The 4.2V minimum input is below the boost output, allowing seamless handoff. This two-stage architecture is common in battery-powered IoT gateways and portable medical pumps where 5V USB rails and lower-voltage sensor rails coexist on the same PCB.
Direkomendasikan
IoT Sensor Node Power Subsystem
Battery- or bus-powered IoT sensor nodes (Zigbee, LoRa, BLE) require efficient step-down conversion from 3.6V Li-SOCl2 or 12V solar inputs to 1.8V/3.3V rails at sub-2A levels. The MP1476GTF-Z supports this with Power-Save Mode that drops quiescent consumption during long RF-idle windows, extending battery life by 20-40% versus fixed-PWM regulators. The SOT-563 footprint allows placement adjacent to the SoC for minimal loop area and reduced EMI in noise-sensitive RF regions.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MP1476GTF-Z — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MP1476GTF-P | MP1652GTF-Z | MP1653GTF-Z | MP1476GTF |
|---|---|---|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | SOT-563 (TF, 6-pin) | SOT-563 - same | SOT-563 - same | SOT-563 - same | SOT-563 - same |
| Input Voltage Range | 4.2 V to 18 V | 4.2 V to 18 V | 4.2 V to 36 V | 4.2 V to 18 V | 4.2 V to 18 V |
| Output Voltage Range | 0.8 V to 10 V | 0.8 V to 10 V | 0.8 V to 10 V | 0.8 V to 10 V | 0.8 V to 10 V |
| Switching Frequency | 800 kHz | 800 kHz | 800 kHz | 800 kHz | 800 kHz |
| Synchronous Rectification | Yes (internal MOSFETs) | Yes (internal MOSFETs) | Yes (internal MOSFETs) | Yes (internal MOSFETs) | Yes (internal MOSFETs) |
| RoHS Status | Compliant (Z suffix) | Leaded finish (non-RoHS) | Compliant (Z suffix) | Compliant (Z suffix) | RoHS status unknown (no Z suffix) |
Diferensiator Kunci
- Compact SOT-563 (1.6x1.6 mm) synchronous buck at 2A (vsMP1475DJ-LF-Z (TSOT-23-6))
- Higher input voltage headroom versus baseline family (vsMP1476GTF (no Z suffix))
- Synchronous mode operation with PSM efficiency at light load (vsMP1652GTF-Z)
Catatan Desain
Minimize the SW node copper area and keep the input capacitor loop as compact as possible (less than 5 mm from IN pin to GND). The exposed bottom pad of the SOT-563 must be soldered to a PCB thermal pad connected to a 5x5 mm minimum ground pour to limit junction temperature rise. Route the FB trace away from the SW node and inductor to avoid noise injection that disturbs output voltage regulation. Reference: MPS MP1476 datasheet EV1476-TF-00A evaluation board layout.
Estimated: At VIN=12V, VOUT=3.3V, and full 2A load, the regulator dissipates (12V-3.3V)*2A = 17.4W - this exceeds the SOT-563 thermal limit and the calculation indicates the operating point is invalid. Realistic continuous load at 12V in is approximately 0.5A-0.8A without external cooling. At VIN=5V, VOUT=3.3V, dissipation drops to (5V-3.3V)*2A = 3.4W which requires at least 100 mm^2 of 1 oz copper pour to maintain junction temperature below 125 C.
Common pitfalls: (1) Do not exceed the 18V absolute-maximum input rating, including transient spikes from motor or relay loads - add a TVS clamp on the input. (2) The BST-to-SW capacitor must be a 0.1 uF X7R ceramic placed within 2 mm of the IC pins; missing this capacitor prevents high-side drive and results in zero output. (3) The EN pin has an internal pull-up, but leaving it floating in a noisy environment can cause intermittent startup; tie to IN through a 100 kOhm resistor for robustness.
Informasi Konformitas
RoHS compliance indicated by -Z suffix per Verified Web Data (MPS standard ordering convention). AEC-Q100 not applicable for this non-automotive grade. REACH and conflict-minerals compliance per MPS standard policy.
