Analog Devices Inc. LTC6992MPS6-4#TRPBF

Overview

LTC6992MPS6-4#TRPBF from Analog Devices is a voltage-controlled pulse width modulator (PWM) IC in the TimerBlox family, designed for precision analog duty-cycle control with 5% to 100% output range. It operates from 2.25V to 5.5V, delivers ±1.7% max frequency error and <3.7% PWM duty cycle error, and supports output frequencies from 3.81Hz to 1MHz - used in LED dimming, heater control, and servo loops requiring stable, low-drift timing.

For engineers reviewing the LTC6992MPS6-4#TRPBF datasheet, LTC6992MPS6-4#TRPBF pinout, LTC6992MPS6-4#TRPBF application, or LTC6992MPS6-4#TRPBF equivalent, this device offers verified automotive-grade operation (–55°C to 125°C), SOT-23-6 packaging, single-resistor frequency programming, and 0V–1V analog modulation input - critical for battery-powered and high-reliability embedded systems.

Technical Context

The LTC6992MPS6-4#TRPBF integrates a master oscillator (1MHz max) with a programmable divider (NDIV = 1, 4, 16, ..., 16384) and a precision 4-bit A/D converter on the DIV pin to set both division ratio and polarity. Its SET pin regulates VSET to 1.00V ±30mV, enabling frequency programming via RSET (50kΩ–800kΩ) without sensitivity to VSET drift.

The MOD pin accepts 0V–1V analog input to linearly control duty cycle within the 5%–100% range defined by the -4 variant; clamping behavior at extremes ensures predictable stop/start operation. CMOS output drives ±20mA with 30Ω typical source/sink impedance and sub-500µs startup time.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6992MPS6-4#TRPBF, the IS6-4 offers identical functionality at reduced temperature capability, while the HDCB-4 provides equivalent performance in a thermally superior DFN package - enabling trade-offs between ruggedness, size, and thermal design.

Availability

LTC6992MPS6-4#TRPBF is available at Aetrix Electronics and suitable for LED dimming control, heater control, and servo loop timing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6992MPS6-4#TRPBF 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 LTC6992MPS6-4#TRPBF belongs to the TimerBlox family - silicon timing devices engineered for simplicity, precision, and robustness in analog-controlled timing applications without microcontroller dependency.

FAQ

What is the exact duty cycle range supported by the LTC6992MPS6-4#TRPBF?

The LTC6992MPS6-4#TRPBF supports a guaranteed 5% to 100% duty cycle range. At VMOD = 0V (relative to VSET), output clamps at 5%; at VMOD = 1V, it reaches 100%. This is specific to the "-4" variant and differs from -1 (0–100%), -2 (5–95%), and -3 (0–95%). The LTC6992MPS6-4#TRPBF implements hard clamping, not soft saturation, ensuring repeatable endpoint behavior.

How is frequency programmed on the LTC6992MPS6-4#TRPBF?

Frequency is programmed using a single external resistor (RSET) connected between the SET pin and GND. With VSET regulated to 1.00V, ISET = 1V/RSET sets the master oscillator frequency per fOUT = 1MHz × 50kΩ / (NDIV × RSET). RSET values from 50kΩ to 800kΩ yield output frequencies from 3.81Hz to 1MHz. The LTC6992MPS6-4#TRPBF requires no external capacitors or DACs for basic operation.

Does the LTC6992MPS6-4#TRPBF require a minimum load or pull-up/pull-down resistors?

No, the LTC6992MPS6-4#TRPBF does not require external load or biasing resistors. Its CMOS output drives directly to V+ or GND with 30Ω typical impedance and ±20mA capability. However, when driving low-impedance loads (e.g., LEDs), a series current-limiting resistor is mandatory to avoid exceeding the 20mA absolute maximum rating. Unused pins (e.g., DIV) should be terminated per datasheet guidance - never left floating.

What is the significance of the "MP" grade in LTC6992MPS6-4#TRPBF?

The "MP" suffix denotes the military/aerospace-grade temperature rating: –55°C to 125°C operational range, qualified per AEC-Q100 for automotive use. It reflects enhanced screening, extended burn-in, and tighter parametric testing versus commercial (C), industrial (I), or high-temp (H) grades. The LTC6992MPS6-4#TRPBF is fully specified and tested across this full range - not just characterized - making it suitable for under-hood, avionics, and downhole applications.

Can the LTC6992MPS6-4#TRPBF operate from a 2.25V supply while maintaining full specifications?

Yes, the LTC6992MPS6-4#TRPBF is fully specified from 2.25V to 5.5V. At 2.25V, it maintains all key parameters: ±1.7% max frequency error, <3.7% PWM duty cycle error, 5%–100% duty range, and 105µA–265µA supply current (depending on NDIV and RSET). Output swing remains rail-to-rail (GND to V+), and VOH/VOL remain within spec - confirmed across the full temperature range per Rev. D datasheet.