Analog Devices Inc. LTC6992MPS6-4#TRMPBF

Overview

LTC6992MPS6-4#TRMPBF from Analog Devices is a precision voltage-controlled PWM generator IC in the TimerBlox family, delivering 5% to 100% duty cycle range with ±3.7% max PWM accuracy, 3.81Hz–1MHz output frequency, and 2.25V–5.5V single-supply operation - used for LED dimming, heater control, and servo loop timing in harsh automotive environments.

For engineers reviewing the LTC6992MPS6-4#TRMPBF datasheet, LTC6992MPS6-4#TRMPBF pinout, LTC6992MPS6-4#TRMPBF application, or LTC6992MPS6-4#TRMPBF equivalent, this page provides verified package mapping (TSOT-23-6), MOD/SET/DIV analog programming interface behavior, –55°C to 125°C MP-grade thermal performance, and direct substitution guidance against functionally matched alternatives.

Technical Context

The LTC6992MPS6-4#TRMPBF implements a master oscillator (1MHz reference × 50kΩ × I_SET) followed by an 8-step programmable divider (NDIV = 1, 4, 16…16384) and a linear analog PWM modulator where VMOD ∈ [0.1·V_SET, 0.9·V_SET] sets duty cycle with clamped endpoints at 5% and 100%. Its internal 4-bit A/D on the DIV pin selects both NDIV and polarity (POL).

Voltage regulation at the SET pin maintains V_SET = 1.00V ±30mV across temperature, decoupling frequency accuracy from supply drift; MOD pin input current is ±10nA, enabling high-impedance control via resistor dividers or DACs without loading error.

Key Specifications

Pinout & Package

Package: 6-lead TSOT-23 (S6), 1mm profile, lead-free, RoHS-compliant - optimized for space-constrained PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6992IS6-4#TRPBF and LTC6992HDCB-4#TRMPBF, the LTC6992MPS6-4#TRMPBF uniquely combines MP-grade temperature range (–55°C to 125°C), TSOT-23 footprint, and AEC-Q100 compliance - making it the only option qualified for safety-critical automotive subsystems requiring guaranteed operation at cryogenic start-up temperatures.

Availability

LTC6992MPS6-4#TRMPBF is available at Aetrix Electronics and suitable for automotive lighting control, battery thermal management, servo motor timing, and high-reliability industrial actuation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6992MPS6-4#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 precision instrumentation, industrial automation, communications, and automotive markets.

The LTC6992MPS6-4#TRMPBF belongs to the TimerBlox family - silicon timing devices designed for replacing discrete RC oscillators and crystal-based solutions in space-, power-, and reliability-constrained applications where programmability and analog control are essential.

FAQ

What is the minimum and maximum duty cycle supported by the LTC6992MPS6-4#TRMPBF?

The LTC6992MPS6-4#TRMPBF supports a minimum duty cycle of 5% and a maximum duty cycle of 100%, as defined by its -4 variant designation. This allows full-range PWM control while preventing output oscillation stoppage at the lower bound - unlike the -1 variant which permits 0% duty cycle. The clamping behavior is hard-coded in silicon and does not require external circuitry.

How do I configure the output frequency of the LTC6992MPS6-4#TRMPBF?

To configure the output frequency of the LTC6992MPS6-4#TRMPBF, connect a precision resistor R_SET (50kΩ to 800kΩ) between the SET pin and GND to set the master oscillator frequency, then apply a voltage divider to the DIV pin to select one of eight divider ratios (NDIV = 1, 4, 16…16384). The final frequency is calculated as f_OUT = 1MHz × 50kΩ / (NDIV × R_SET), with ±1.7% max error over temperature.

Does the LTC6992MPS6-4#TRMPBF require an external clock or crystal?

No, the LTC6992MPS6-4#TRMPBF is a fully self-contained silicon oscillator and does not require any external clock source, crystal, or resonator. Its internal master oscillator is calibrated to 1MHz reference and programmable via the SET pin current - eliminating BOM count, board area, and startup delay associated with external timing components.

What is the operating temperature range of the LTC6992MPS6-4#TRMPBF?

The LTC6992MPS6-4#TRMPBF is specified for continuous operation from –55°C to 125°C and is qualified per AEC-Q100 Grade MP. This extended range exceeds standard automotive (–40°C to 125°C) and industrial (–40°C to 85°C) requirements, enabling reliable use in cryogenic engine start-up, under-hood electronics, and downhole tooling without derating.

Can the LTC6992MPS6-4#TRMPBF drive an LED directly?

The LTC6992MPS6-4#TRMPBF CMOS output can source or sink up to 20mA, but driving an LED directly is not recommended without current limiting. Due to its rail-to-rail output swing (GND to V+), connecting an LED between OUT and V+ or GND will cause excessive current if forward voltage is less than V+. Always use a series current-limiting resistor - e.g., 150Ω for a 20mA red LED at 3.3V - to ensure safe operation and prevent damage to the LTC6992MPS6-4#TRMPBF output stage.