Micrel MIC37302WRTR

Mfr. Part

MIC37302WRTR

Manufacturer

Micrel (now Microchip Technology). Y-IC is a quality distributor for Microchip/Micrel products and we provide customers with original, high-reliability parts and responsive service.

Detailed Description

MIC37302WRTR is a high-efficiency DC/DC step-down (buck) regulator from the MIC37xxx family, integrating power MOSFETs to deliver up to multi‑ampere output (commonly used at 3 A class).

Designed for point‑of‑load conversion from low-voltage rails, enabling compact, efficient power supplies with few external parts.

Typical features for this family include high switching frequency operation, 100% duty cycle capability for low dropout behavior, internal soft start, cycle‑by‑cycle current limit, thermal shutdown, and good transient response.

Suffix decoding: “WR” indicates a specific thermally‑enhanced surface‑mount package code used by Micrel/Microchip; “TR” indicates Tape‑and‑Reel for automated assembly.

Key Features

Synchronous buck regulator architecture with integrated high‑ and low‑side MOSFETs

Continuous output current capability in the multi‑amp range (commonly 3 A)

High switching frequency (typically in the MHz range) for smaller inductors and capacitors

Wide, low-voltage input range suitable for 3.3 V/5 V rails (see datasheet for exact limits)

Adjustable output voltage (typical reference ~0.8 V) and fixed‑voltage options in the series

100% duty cycle operation for low dropout at light input‑to‑output headroom

Internal soft‑start, current limit, thermal shutdown, and optional Power‑Good/Enable pins

Stable with low‑ESR ceramic capacitors (check recommended values in datasheet)

High efficiency across a broad load range

RoHS‑compliant, lead‑free packaging for modern manufacturing

Key Advantages

Fewer external components and integrated MOSFETs reduce BOM cost and PCB area

High efficiency cuts heat and improves battery or system power margins

High switching frequency shrinks magnetics and overall solution size

Robust protection (OCP/OTP) and soft‑start improve reliability and startup behavior

100% duty cycle capability helps maintain regulation at low VIN–VOUT differentials

Widely used topology makes design and sourcing straightforward with abundant ecosystem support

Packaging

Shipment format: TR = Tape & Reel, compatible with automated pick‑and‑place

Package code: WR (Micrel/Microchip internal package identifier; thermally enhanced surface‑mount package)

Material: Lead‑free, RoHS‑compliant plastic encapsulation with plated leads

Mechanical size and outline: Refer to the MIC37302 WR package drawing in the datasheet for exact dimensions and land pattern

Pin configuration: Typical buck regulator pins include VIN/PVIN, SW, PGND/AGND, FB, COMP, EN, SS, and optionally PGOOD/SYNC (see device pinout in datasheet)

Thermal characteristics: Thermally enhanced design intended for efficient heat removal; consult datasheet for θJA, θJC and recommended PCB copper area

Electrical properties (family typicals): Multi‑amp output capability, MHz‑class switching frequency, low RDS(on) integrated MOSFETs, internal reference around 0.8 V. Exact limits/specs must be confirmed in the datasheet for MIC37302WRTR

Lifecycle

Status: Actively supported within Microchip’s portfolio in many channels. Availability can vary by region and date code; Y‑IC can confirm current stock (we show 2200 pcs available) and lead time.

Not near end‑of‑life to our knowledge as of the latest public info. For the most current lifecycle status, contact Y‑IC sales.

Equivalent/Alternative models (functional alternatives; verify pinout and specs before use):

- Microchip/Micrel: MIC37252 (≈2.5 A synchronous buck), MIC23150/MIC23158 (compact 3 A bucks), MIC2288/MIC2289 (high‑efficiency bucks; different voltage ranges/package)

- Texas Instruments: TPS5430/TPS54331 (3 A buck, wider VIN), TPS62130 (3 A, high‑efficiency, compact)

- Analog Devices/Maxim: ADP2303/ADP2302 (3 A non‑sync/sync bucks, different VIN), MAX15062 family (high‑VIN compact bucks)

- ON Semiconductor: NCP1587/NCP3065 families (varied VIN/current; check details)

- Richtek: RT8250/RT8299 series (3 A buck options)

If you require pin‑compatible or drop‑in alternatives, please contact Y‑IC via our website; our engineers will match footprint, thermal, and electrical specs for you.

Key Application Areas

Point‑of‑load power for ASICs, FPGAs, and MCUs

Core and I/O rail generation in embedded systems

Networking, telecom, and industrial control power modules

Consumer and set‑top equipment low‑voltage rails

SSDs, HDDs, and storage controller power

Instruments and test equipment requiring compact, efficient DC/DC conversion

Datasheet

Y‑IC hosts the most authoritative datasheet for MIC37302WRTR on our product page. We strongly recommend downloading the datasheet on this page to confirm package WR dimensions, absolute maximum ratings, electrical characteristics, recommended external components, and PCB layout guidelines.

Request for Quotation Now

Limited Time Offer — stock moving fast (2200 pcs available). Visit Y‑IC now to Get a Quote and secure pricing and delivery. Need technical matching or alternates? Click Learn More on our site and our team will assist immediately.