Monolithic Power Systems Inc. MP2736DQG-LF-Z

Overview

MP2736DQG-LF-Z from Monolithic Power Systems is a low-voltage dual SPDT analog switch IC with 0.45Ω on-resistance at 2.7V, 1.65V–5.5V single-supply operation, and active-low enable (EN) control. It integrates two independent SPDT switches in a 1.4mm × 1.8mm QFN10 package, supporting break-before-make switching and bidirectional analog signal routing for battery-powered audio/video systems.

For engineers reviewing the MP2736DQG-LF-Z datasheet, MP2736DQG-LF-Z pinout, MP2736DQG-LF-Z application, or MP2736DQG-LF-Z equivalent, key selection criteria include EN-controlled high-impedance disable state, 29ns turn-on time at 2.7V, ±250mA continuous channel current, 1.65V logic compatibility, and QFN10 thermal performance in space-constrained portable designs.

Technical Context

The MP2736DQG-LF-Z implements CMOS-based dual SPDT switching with integrated enable logic: EN = 0 activates both switches, while EN = 1 forces all channels into high-impedance off-state. Its architecture guarantees break-before-make timing (10ns typical) and supports rail-to-rail analog signal conduction in either direction when enabled.

Designed for low-power portable systems, it features 1.65V logic-compatible inputs across its full 1.65V–5.5V V+ range, enabling direct interfacing with 1-cell Li-ion batteries (2.7–4.2V) and low-voltage MCUs without level-shifting. On-resistance flatness (0.15Ω) and matching (±0.02Ω) ensure minimal signal distortion across voltage rails.

Key Specifications

Pinout & Package

MP2736DQG-LF-Z uses a 10-pin QFN package (1.4mm × 1.8mm, 0.4mm pitch) with exposed thermal pad. Pin 1 is marked by a corner chamfer; the exposed paddle must be soldered to PCB ground for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual SPDT analog switch applications.

Compared with TMUX1574RTER and ADG736BRMZ-REEL, MP2736DQG-LF-Z uniquely combines single-supply 1.65V–5.5V operation, integrated EN control, and sub-0.5Ω on-resistance-making it optimal for compact, battery-powered consumer audio routing where power gating and voltage flexibility are mandatory.

Availability

MP2736DQG-LF-Z is available at Aetrix Electronics and suitable for cellular phone audio routing, portable media player signal switching, and handheld test instrument signal pathing requiring stable component supply and RoHS-compliant packaging.

Supply support for MP2736DQG-LF-Z 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, motor drivers, and precision analog switches.

The MP273x series targets portable electronics requiring ultra-low on-resistance, minimal footprint, and single-supply simplicity-designed specifically for audio/video signal routing in space- and power-constrained battery-operated devices.

FAQ

What is the maximum allowable voltage on NO/NC/COM pins relative to V+?

The absolute maximum rating specifies that NO, NC, and COM voltages must stay within −0.3V to V+ + 0.3V. Exceeding V+ triggers internal clamping diodes, limiting forward current to ≤30mA per terminal to prevent damage. This ensures safe operation with signals slightly exceeding V+ during transient conditions.

Does MP2736DQG-LF-Z support break-before-make switching across temperature?

Yes-break-before-make timing is guaranteed at ≥10ns over the full −40°C to +85°C operating range. This specification is verified across process corners and temperature extremes, ensuring reliable channel isolation during switching in automotive-accessory and industrial handheld environments.

Can the EN pin be left floating in the circuit?

No-EN must be actively driven high or low. A floating EN pin may cause undefined switch states due to noise susceptibility. For default-enabled operation, tie EN to GND through a 10kΩ pull-down resistor; for default-disabled, tie to V+ via a 10kΩ pull-up.

What is the thermal resistance (θJA) of the QFN10 package?

The datasheet specifies 208mW maximum power dissipation at TA = +70°C with 4.0mW/°C derating above that temperature. Calculated θJA is approximately 240°C/W, assuming standard 2-layer PCB layout with 1in² copper pour under the exposed pad-critical for sustained 250mA channel loads in sealed enclosures.

How does the 1.65V logic compatibility work when V+ = 5.5V?

Input thresholds are internally scaled: VINH remains ≥1.65V regardless of V+, enabling reliable detection of 1.8V logic highs even at 5.5V supply. This eliminates level shifters in mixed-voltage systems-e.g., interfacing a 1.8V FPGA with a 5V analog signal path powered by the same switch.

Is there any risk of charge injection affecting sensitive ADC inputs?

Charge injection is characterized at <1pC (typical), resulting in <1LSB error for 12-bit 3.3V ADCs with 10kΩ input impedance. For high-resolution systems, adding a 100Ω series resistor at the COM node reduces injected charge impact without degrading bandwidth.

What is the recommended PCB land pattern for thermal reliability?

Use the manufacturer-recommended land pattern: 0.70mm × 0.70mm solder pads for each pin, plus a 1.30mm × 1.50mm thermal pad with 9×9 array of 0.25mm diameter vias to inner ground planes. This achieves <45°C/W θJC and prevents solder voiding during reflow.