Analog Devices Inc./Maxim Integrated MAX38902CANT+

Overview

MAX38902CANT+ from Analog Devices is a low-noise, 500mA LDO linear regulator in a 2×3 wafer-level package (WLP), delivering 10.5µVRMS output noise (10Hz–100kHz), ±1% DC output accuracy over load/line/temperature, and only 100mV max dropout at full load (3.6V_IN). It features resistor-adjustable output voltage (0.6V–5.3V), programmable soft-start, active discharge (800Ω), and overcurrent/thermal protection - ideal for high-resolution data acquisition systems requiring ultra-low-noise power.

For engineers reviewing the MAX38902CANT+ datasheet, MAX38902CANT+ pinout, MAX38902CANT+ application, or MAX38902CANT+ equivalent, this page provides verified technical context, WLP-specific pin mapping, real-world application cards, and two validated alternative parts with functional and packaging distinctions.

Technical Context

The MAX38902CANT+ uses a pMOS pass transistor architecture with internal 0.6V reference and external resistor feedback (FB pin) to set output voltage across 0.6V–5.3V. Its control loop includes programmable soft-start via BYP capacitor (0.001–0.1µF) and active discharge (800Ω) triggered on EN deassertion.

It integrates reverse-current protection that disables conduction when V_OUT exceeds V_IN by >10mV, plus thermal shutdown at +165°C (re-enable at +150°C) and current limiting at ~700mA. Unlike MAX38902A/B, it omits POK and SEL pins, and unlike MAX38902D, it lacks factory-trimmed voltage - all confirmed by ordering information and pin description tables.

Key Specifications

Pinout & Package

MAX38902CANT+ uses a 2×3 bump, 0.4mm pitch wafer-level package (WLP), measuring 2mm × 3mm. The exposed bump array provides direct thermal path to PCB ground plane; no exposed pad required.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with MAX38902CANT+, MAX38902BATA+ adds POK but requires TDFN layout and sacrifices WLP size advantage, while TPL7407LDR trades adjustability, soft-start, and noise performance for lower cost and simpler design - making MAX38902CANT+ optimal for space-constrained, precision analog systems needing flexibility and cleanliness.

Availability

MAX38902CANT+ is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, portable audio devices, and low-power industrial sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant WLP packaging.

Supply support for MAX38902CANT+ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The MAX38902 family targets ultra-low-noise, high-accuracy power regulation for sensitive analog signal chains - specifically designed for data converters, RF bias, and sensor interfaces where PSRR, noise, and thermal stability are critical.

FAQ

What output voltage range does the MAX38902CANT+ support?

The MAX38902CANT+ supports an output voltage range of 0.6V to 5.3V, set externally via a resistor divider connected to the FB pin. The internal reference is 0.6V, so V_OUT = 0.6V × (1 + R3/R2). This flexibility allows precise tailoring for diverse analog and mixed-signal loads without changing the MAX38902CANT+ part number.

Does the MAX38902CANT+ include power-good (POK) functionality?

No, the MAX38902CANT+ does not include a POK output. That feature is exclusive to the MAX38902B variant (e.g., MAX38902BATA+). The MAX38902CANT+ omits POK to reduce pin count and optimize its 2×3 WLP footprint, focusing instead on ultra-low noise, soft-start control, and compact integration for space-constrained designs.

What is the minimum output capacitance required for stability with the MAX38902CANT+?

The MAX38902CANT+ requires a minimum of 2µF ceramic output capacitance (X5R or X7R dielectric) for guaranteed stability across temperature and DC bias. This value accounts for capacitance derating - for example, a 4.7µF/6.3V X5R capacitor may retain ~2.9µF at 1.8V bias, satisfying the requirement without oversized components.

How does the active discharge feature work on the MAX38902CANT+?

When the EN pin is pulled low, the MAX38902CANT+ internally connects an 800Ω resistor between the OUT pin and GND. This actively discharges output capacitors, reducing decay time significantly versus passive RC discharge. It ensures rapid rail collapse during power-down sequencing, preventing latch-up or unintended operation in multi-supply systems.

Is the MAX38902CANT+ compatible with standard PCB assembly processes?

Yes, the MAX38902CANT+ uses a RoHS-compliant 2×3 WLP with 0.4mm pitch and solderable bumps, qualified for standard reflow profiles (peak ≤260°C). Its land pattern follows JEDEC MO-220 guidelines, and thermal performance is validated for four-layer boards with θ_JA = 95.1°C/W - enabling reliable high-volume manufacturing without special process requirements.