Analog Devices Inc. LTC6992MPS6-3#TRMPBF

Overview

LTC6992MPS6-3#TRMPBF from Analog Devices is a voltage-controlled pulse width modulator (PWM) IC in the TimerBlox family, designed for precision analog duty-cycle control in timing-critical systems. It delivers 0% to 95% programmable duty cycle range, 3.81Hz–1MHz output frequency (set via RSET and NDIV), ±1.7% max frequency error, and operates from 2.25V–5.5V supply across –55°C to 125°C. It serves as a compact, single-supply PWM generator in LED dimming and servo loop applications.

For engineers reviewing the LTC6992MPS6-3#TRMPBF datasheet, LTC6992MPS6-3#TRMPBF pinout, LTC6992MPS6-3#TRMPBF application, or LTC6992MPS6-3#TRMPBF equivalent, this device offers verified analog-modulated PWM with automotive-grade temperature range, low 115μA typical supply current at 100kHz, and CMOS output capable of sourcing/sinking 20mA - critical for battery-powered and high-reliability embedded control designs.

Technical Context

The LTC6992MPS6-3#TRMPBF integrates a master oscillator (1MHz max) whose frequency is set by ISET = VSET/RSET, where VSET is internally regulated to 1.00V ±30mV. Output frequency fOUT = 1MHz × 50kΩ / (NDIV × RSET), with NDIV programmable to eight values (1, 4, 16, 64, 256, 1024, 4096, 16384) via a resistor divider on the DIV pin.

Duty cycle is linearly controlled by VMOD input (0.1×VSET to 0.9×VSET), clamped at 0% min / 95% max per its -3 variant designation. The internal 4-bit A/D converter interprets DIV pin voltage to select both NDIV and polarity (POL), while a digital filter ensures stable PWM transitions without oscillation artifacts.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (S6), 1mm profile, lead-free, RoHS-compliant. Exposed pad not present in S6 package.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-controlled PWM applications.

Compared with LTC6992MPS6-3#TRMPBF, the IS6-3 alternative sacrifices extended temperature coverage for lower cost, while the HDCB-3 offers superior thermal performance in a larger footprint - enabling trade-offs between ruggedness, size, and thermal design constraints.

Availability

LTC6992MPS6-3#TRMPBF is available at Aetrix Electronics and suitable for LED dimming control, servo motor positioning, and heater power regulation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6992MPS6-3#TRMPBF 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 industrial, automotive, communications, and healthcare markets.

The LTC6992MPS6-3#TRMPBF belongs to the TimerBlox family - silicon timing devices engineered for simplicity, stability, and analog programmability in embedded timing applications where crystal oscillators or microcontroller-based PWM lack precision or power efficiency.

FAQ

What is the exact duty cycle range supported by the LTC6992MPS6-3#TRMPBF?

The LTC6992MPS6-3#TRMPBF supports a 0% to 95% duty cycle range, as defined by its "-3" variant designation. At VMOD = 0V (or below 0.1×VSET), output stops (0% duty cycle); at VMOD = 0.9×VSET or higher, it clamps at 95%. This behavior is confirmed in the device's Electrical Characteristics table and applies across its full –55°C to 125°C operating range.

How is the output frequency programmed on the LTC6992MPS6-3#TRMPBF?

The LTC6992MPS6-3#TRMPBF output frequency is set using two elements: an external RSET resistor connected between SET and GND (50kΩ–800kΩ), and a resistor divider on the DIV pin to select NDIV (1, 4, 16…16384). The formula is fOUT = 1MHz × 50kΩ / (NDIV × RSET), with VSET internally regulated to 1.00V - making frequency accuracy dependent primarily on RSET tolerance and inherent IC error (±1.7% max).

Does the LTC6992MPS6-3#TRMPBF require external components for basic operation?

Yes - the LTC6992MPS6-3#TRMPBF requires three minimal external components for full functionality: a 0.1µF bypass capacitor from V+ to GND, an RSET resistor (50kΩ–800kΩ) from SET to GND, and a two-resistor divider (R1/R2) from V+ to GND connected to the DIV pin. No external crystal, inductor, or compensation network is needed, enabling rapid integration into space-constrained designs.

What is the significance of the "MP" grade in LTC6992MPS6-3#TRMPBF?

The "MP" in LTC6992MPS6-3#TRMPBF denotes the military/automotive enhanced grade, guaranteeing full electrical specifications over –55°C to 125°C and compliance with AEC-Q100 stress testing. This includes validated long-term drift (90ppm/√kHr), extended temperature cycling, and humidity robustness - distinguishing it from commercial (C), industrial (I), or high-temp (H) variants that lack the same qualification scope.

Can the LTC6992MPS6-3#TRMPBF drive a MOSFET gate directly?

Yes - the LTC6992MPS6-3#TRMPBF features a CMOS output capable of sourcing and sinking up to 20mA, sufficient to drive small-signal MOSFET gates (e.g., SiC or logic-level N-channel devices with Qg < 10nC) without external buffering. For higher gate charge loads or faster switching, a dedicated gate driver remains recommended, but the LTC6992MPS6-3#TRMPBF eliminates intermediate logic buffers in low-power implementations.