Monolithic Power Systems Inc. MP1911GTL-Z

Overview

MP1911GTL-Z from Monolithic Power Systems is a 2.5V–16V, 1A H-bridge motor driver IC with integrated N-channel MOSFETs, internal charge pump, and configurable cycle-by-cycle over-current protection. It delivers forward/reverse/brake/coast/sleep modes via dual logic inputs (IN1/IN2), supports IR-cut camera actuation, and operates in ambient temperatures from –40°C to +125°C.

For engineers reviewing the MP1911GTL-Z datasheet, MP1911GTL-Z pinout, MP1911GTL-Z application, or MP1911GTL-Z equivalent, key selection criteria include its SOT583 package footprint, 50nA sleep current, 150ns dead time, thermal shutdown at 150°C, and external ILIM resistor-based current limit tuning for precision load control.

Technical Context

The MP1911GTL-Z implements a fully integrated H-bridge using four N-channel power MOSFETs with matched 0.25Ω R_DS(ON) (HS/LS) at 100mA and 25°C. Its internal charge pump enables gate drive above VIN, eliminating need for external high-side drivers.

Control logic interprets IN1/IN2 states to select output mode - including brake (both high), coast (both low), and sleep (both low ≥1ms). Current limiting uses constant-off-time PWM with programmable trip threshold (1.21V typical V_{ITRIP_R}) and 5–30µs off-time window.

Key Specifications

Pinout & Package

The MP1911GTL-Z is housed in a thermally enhanced 8-pin SOT583 package (1.6mm × 2.1mm), with exposed thermal pad for improved heat dissipation in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar H-bridge driver applications.

Compared with TB6612FNG and DRV8876N, the MP1911GTL-Z uniquely balances ultra-low sleep current (50nA), compact SOT583 footprint, and fully integrated charge pump - making it optimal for space- and energy-constrained IR-cut, smart lock, and metering applications where simplicity and longevity are prioritized over digital control.

Availability

MP1911GTL-Z is available at Aetrix Electronics and suitable for IR-cut camera actuation, smart meter motor control, and smart lock actuator applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP1911GTL-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 power management ICs, with design focus on efficiency, integration, and reliability across consumer, industrial, and automotive markets.

The MP1911 belongs to MPS's H-bridge driver product line, engineered specifically for compact, low-power bidirectional actuation in imaging, metering, and access control systems - emphasizing minimal external components and robust fault protection.

FAQ

What is the minimum input voltage required for reliable operation of the MP1911GTL-Z?

The MP1911GTL-Z has an under-voltage lockout (UVLO) rising threshold of 1.7V typical, with 100mV hysteresis. Stable operation begins at VIN ≥ 2.5V per datasheet specification, and the device disables all outputs below the UVLO threshold to prevent erratic switching or partial turn-on of MOSFETs.

How is current limiting configured on the MP1911GTL-Z?

Current limiting is set via an external resistor (R_ILIM) from the ILIM pin to GND. The device sources 80µA/A of load current into this resistor; for example, a 10kΩ resistor yields a 1.5A trip point (V_{ITRIP_R} = 1.21V). The resulting V_ILIM is compared internally to trigger cycle-by-cycle PWM limiting.

Does the MP1911GTL-Z require an external capacitor on the VCAP pin?

Yes - for switching applications (e.g., PWM-driven motor or solenoid), a 100nF ceramic capacitor must be placed between VCAP and VIN. For static or infrequent actuation (e.g., IR-cut filter once per minute), the VCAP pin may remain unconnected per datasheet guidance.

What happens when both IN1 and IN2 are held low for more than 1ms?

The MP1911GTL-Z automatically enters sleep mode after ~1ms of both inputs low, disabling the charge pump and gate drivers. Supply current drops to 50nA, OUT1/OUT2 go Hi-Z, and all protections remain active. Wake-up occurs within 230µs when either IN1 or IN2 transitions high.

Can the MP1911GTL-Z drive inductive loads exceeding 1A peak current?

No - the device is rated for 1A continuous output current. Peak currents beyond 1A risk triggering OCP or thermal shutdown. For loads requiring >1A, the ILIM resistor must be adjusted to lower the trip threshold, or a higher-current driver (e.g., DRV8876N) should be selected.

Is the SOT583 package lead-free and RoHS-compliant?

Yes - all MP1911GTL-Z units are lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status on its official Quality Assurance page, and the SOT583 package meets JEDEC MSL Level 1 moisture sensitivity requirements.