Analog Devices Inc./Maxim Integrated MAX15106CGWP+T

Overview

MAX15106CGWP+T from Analog Devices is a high-efficiency, current-mode, synchronous step-down switching regulator with integrated 6A power switches, operating from 2.7V to 5.5V input and delivering adjustable output from 0.6V to 95% of VIN. It features 1.1MHz fixed-frequency PWM operation, ±1% output voltage accuracy over load/line/temperature, and supports all-ceramic capacitor designs for compact point-of-load power in notebook and server applications.

For engineers reviewing the MAX15106CGWP+T datasheet, MAX15106CGWP+T pinout, MAX15106CGWP+T application, or MAX15106CGWP+T equivalent, key selection considerations include its 1.1MHz switching frequency, WLP-20 package footprint, prebias-safe startup capability, and integrated cycle-by-cycle overcurrent protection - critical for DDR memory and distributed power systems requiring fast transient response and layout simplicity.

Technical Context

The MAX15106CGWP+T implements peak-current-mode control using a 1.4mS transconductance error amplifier and a 25A/V COMP-to-current-sense transconductance, enabling stable loop compensation with minimal external components. Its internal 1.1MHz oscillator drives forced PWM operation, eliminating subharmonic oscillation via a 0.3V/µs compensation ramp added to the current-derived ramp waveform.

Startup behavior is defined by programmable soft-start (10µA sourcing current into SS pin) and safe prebiased operation: both MOSFETs remain off until SS voltage exceeds FB threshold (0.58V), preventing output discharge. Thermal shutdown activates at +160°C with +25°C hysteresis, and hiccup mode engages after eight consecutive high-side current-limit events (9A threshold).

Key Specifications

Pinout & Package

The MAX15106CGWP+T is housed in a 20-bump, 2.5mm × 2mm, 0.5mm pitch Wafer-Level Package (WLP) with a 4 × 5 bump array. This ultra-compact, bottom-terminated package enables high-density PCB layouts and excellent thermal performance on four-layer boards (θ_JA = 47°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down regulator applications.

Compared with TPS546B24RVFT and RTQ2132BGQW, the MAX15106CGWP+T offers superior integration density (2.5mm × 2mm WLP), guaranteed 1.1MHz operation without configuration, and proven prebias-safe startup - making it optimal for space-constrained, high-reliability notebook and DDR applications where layout simplicity and deterministic behavior are prioritized over programmability.

Availability

MAX15106CGWP+T is available at Aetrix Electronics and suitable for notebook power, DDR memory, server auxiliary rails, and distributed power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX15106CGWP+T 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and computing markets.

The MAX15106 family belongs to Analog Devices' high-current, monolithic DC-DC regulator product line, designed specifically for compact, efficient point-of-load conversion in portable and infrastructure equipment where thermal performance and layout simplicity are critical.

FAQ

What is the switching frequency of the MAX15106CGWP+T?

The MAX15106CGWP+T operates at a factory-trimmed fixed switching frequency of 1.1MHz. This value is specific to the 'C' variant in the MAX15106A/B/C family and is guaranteed across the full -40°C to +105°C operating temperature range. The high frequency allows use of small inductors and all-ceramic output capacitors, reducing solution size and cost. Unlike programmable alternatives, no external components or registers are needed to set or adjust this frequency in the MAX15106CGWP+T.

Does the MAX15106CGWP+T support startup into a prebiased output?

Yes, the MAX15106CGWP+T safely starts into a prebiased output without discharging the output capacitor. During prebias startup, both high-side and low-side MOSFETs remain off until the SS pin voltage exceeds 0.58V, ensuring no reverse current flows through the inductor or switches. This behavior is confirmed in the device's functional diagram and typical operating waveforms. The MAX15106CGWP+T maintains this capability across its full input voltage range (2.7V–5.5V) and output load conditions, making it suitable for systems with multiple power domains that may power up asynchronously.

What package type and dimensions does the MAX15106CGWP+T use?

The MAX15106CGWP+T uses a 20-bump Wafer-Level Package (WLP) with a 4 × 5 bump array, measuring 2.5mm × 2mm and featuring 0.5mm bump pitch. This ultra-compact, bottom-terminated package is designated W202D2Z+1 per Maxim Integrated's package coding system. It is fully specified for operation from -40°C to +105°C and requires JEDEC J-STD-020A-compliant reflow profiles - hand or wave soldering is not permitted. Thermal resistance is θ_JA = 47°C/W on a four-layer board.

How is output voltage set on the MAX15106CGWP+T?

Output voltage on the MAX15106CGWP+T is set using an external resistive divider from V_OUT to FB to PGND, with a nominal feedback reference of 600mV (±6mV). The formula is R₁ = R₂ × ((V_OUT/0.6V) − 1), where R₂ is typically 5kΩ. The FB pin draws only ±100nA bias current, minimizing divider error. For example, to set 1.2V output, R₁ ≈ 5kΩ and R₂ ≈ 5kΩ. The device supports outputs from 0.6V up to 95% of VIN, and the divider must be routed away from noisy nodes like LX to maintain regulation accuracy.

What protection features does the MAX15106CGWP+T include?

The MAX15106CGWP+T integrates cycle-by-cycle overcurrent protection (9A high-side current limit), thermal shutdown (+160°C with +25°C hysteresis), input undervoltage lockout (2.7V threshold with 200mV hysteresis), and hiccup-mode fault recovery after eight consecutive current-limit events. It also features safe prebias startup, forced PWM mode to prevent diode conduction, and open-drain PGOOD output with 25mV hysteresis. All protections are hardware-based and require no external components - the MAX15106CGWP+T enters hiccup mode automatically upon sustained overload, then attempts soft-start recovery after a 1024-clock-cycle delay.