Microchip Technology TP5322N8-G

Overview

TP5322N8-G from Microchip Technology is a P-channel enhancement-mode vertical DMOS FET in a 3-lead SOT-89 package, featuring –220 V drain-to-source breakdown voltage, –2.4 V maximum gate threshold voltage, 12 Ω maximum R_DS(ON) at –10 V V_GS, 110 pF maximum input capacitance, and –700 mA minimum on-state drain current - ideal for high-voltage logic-level switching in photovoltaic drives and battery-operated systems.

For engineers reviewing the TP5322N8-G datasheet, TP5322N8-G pinout, TP5322N8-G application, or TP5322N8-G equivalent, key selection criteria include low-threshold operation under –2.4 V, thermal stability up to +150°C ambient, SOT-89 package thermal resistance (θ_JA = 133°C/W), and compatibility with TTL/CMOS drive levels without level-shifting circuitry.

Technical Context

This device uses a vertical DMOS structure with silicon-gate process to combine bipolar-like power handling with MOS advantages: high input impedance (>10¹² Ω), positive temperature coefficient for inherent current sharing, and immunity to thermal runaway and secondary breakdown. Its gate threshold is specified down to –2.4 V at –1 mA ID, enabling direct drive from 3.3 V or 5 V logic.

AC performance includes 10 ns turn-on delay, 15 ns rise time, and 20 ns turn-off delay under V_DD = –25 V, I_D = –700 mA, R_GEN = 25 Ω conditions. Diode parameters include –1.8 V forward voltage at –500 mA and 300 ns reverse recovery time - critical for synchronous rectification and flyback snubbing.

Key Specifications

Pinout & Package

The TP5322N8-G is housed in a 3-lead SOT-89 package (JEDEC TO-243AA), with 4.4–4.6 mm length, 2.29–2.60 mm width, and 3.94 mm height. Thermal pad on lead 2 and 4 provides enhanced heat transfer to PCB copper.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel high-voltage switching applications.

Compared with TP5322N8-G, Si2301DS-T1-E3 trades voltage capability for smaller size and lower cost in low-voltage roles, while IRF9540NPBF offers higher current capacity in a through-hole package but requires gate drive above –4 V - making TP5322N8-G uniquely suited for high-voltage, logic-level–driven switching where both breakdown margin and ease of control are essential.

Availability

TP5322N8-G is available at Aetrix Electronics and suitable for photovoltaic bypass circuits, battery-powered load switching, telecom signal routing, and logic-level line driving requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TP5322N8-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power semiconductors, with global design, manufacturing, and support infrastructure.

The TP5322N8-G belongs to Microchip's vertical DMOS FET product line, engineered for high-reliability switching applications demanding high breakdown voltage, low threshold, and thermal robustness - particularly in renewable energy, industrial automation, and communications infrastructure.

FAQ

What is the maximum gate-to-source voltage rating for TP5322N8-G?

The TP5322N8-G has a gate-to-source voltage rating of ±20 V. Exceeding this limit risks permanent gate oxide damage. This rating allows safe operation with standard –10 V or –12 V gate drive supplies while maintaining margin against transient spikes. The device is designed for enhancement-mode operation, so gate voltage must remain below the threshold (≤ –1 V) to stay off and above it (e.g., –4.5 V to –10 V) to fully enhance the channel. Always observe this absolute maximum in layout and drive circuit design.

Does TP5322N8-G include an integrated body diode, and what are its characteristics?

Yes, TP5322N8-G includes a built-in parasitic body diode with a forward voltage drop of –1.8 V at –500 mA and a reverse recovery time of 300 ns. This diode conducts from source to drain when the drain is more negative than the source - essential for freewheeling paths in inductive loads and flyback topologies. Its relatively fast trr supports moderate-frequency switching, though external Schottky diodes may be added for higher efficiency in critical applications. The diode is not rated for continuous conduction beyond datasheet limits.

Can TP5322N8-G be used in parallel configurations, and what design considerations apply?

Yes, TP5322N8-G can be paralleled due to its positive temperature coefficient of RDS(ON), which promotes natural current sharing as temperature rises. To ensure balanced operation, use matched gate resistors, symmetrical PCB layout with equal trace lengths and copper area, and thermal coupling via shared heatsinking or copper pour. Avoid paralleling with devices from different lots unless characterized together. Derate total current by ≥20% for reliability, and verify thermal performance under worst-case ambient and load conditions using the 133°C/W θJA value.

What is the thermal resistance (θJA) of TP5322N8-G, and how does it affect power dissipation?

The TP5322N8-G has a junction-to-ambient thermal resistance (θJA) of 133°C/W in the SOT-89 package. At 25°C ambient, this allows a maximum power dissipation of 1.6 W before reaching the 150°C maximum junction temperature. In practice, derating is required: at 85°C ambient, usable power drops to ~0.5 W. Effective thermal design requires generous copper pour on the drain pads (pins 2 and 4), internal layer thermal vias, and avoidance of nearby heat sources. Refer to Microchip's AN929 for PCB layout guidelines specific to SOT-89 power FETs.

Is TP5322N8-G RoHS-compliant and halogen-free?

Yes, TP5322N8-G is RoHS-compliant and lead (Pb)-free, as indicated by the "G" suffix in the part number per Microchip's Product Identification System. The device meets JEDEC J-STD-609 Category 1 for moisture sensitivity and is qualified to MSL Level 1. It is also halogen-free per IEC 61249-2-21, with chlorine and bromine content below 900 ppm each and total halogens under 1500 ppm. Full compliance documentation, including test reports and declarations, is available through Microchip's quality portal.