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Analog Devices Inc. LTC6992CDCB-3#TRPBF
- Part No.:
- LTC6992CDCB-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6992CDCB-3#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,482
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Product details
Overview
LTC6992CDCB-3#TRPBF from Analog Devices is a voltage-controlled pulse width modulator (PWM) IC in the TimerBlox family, configured for 0% to 95% duty cycle range. It operates from 2.25V to 5.5V, delivers CMOS output with ±20mA drive, and achieves frequency accuracy of ±1.7% over temperature using a single RSET resistor. It is used in LED dimming control where precise analog-modulated PWM with low quiescent current is required.
For engineers reviewing the LTC6992CDCB-3#TRPBF datasheet, LTC6992CDCB-3#TRPBF pinout, LTC6992CDCB-3#TRPBF application, or LTC6992CDCB-3#TRPBF equivalent, this page provides verified electrical parameters, DFN-6 package layout, duty-cycle clamping behavior, thermal performance across –40°C to 85°C, and validated automotive-grade alternatives.
Technical Context
The LTC6992CDCB-3#TRPBF integrates a master oscillator (1MHz max) whose frequency is set by ISET = VSET/RSET, where VSET is internally regulated to 1.00V ±30mV. Its programmable divider NDIV selects from eight ratios (1 to 16384) via a 4-bit A/D on the DIV pin, enabling output frequencies from 3.81Hz to 1MHz.
Duty cycle is linearly controlled by VMOD between 0.1•VSET and 0.9•VSET (≈100mV–900mV), with hard clamps at 0% min and 95% max - a defining trait of the -3 variant. The device features internal power-on reset, 500µs startup time, and ±3.7% PWM duty cycle error over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 3.81Hz to 1MHz - supports ultra-low-power timing and high-speed LED modulation without external clock sources. |
| Duty Cycle Range | 0% to 95% - enables full-off capability while limiting maximum conduction for thermal safety in heater/LED drivers. |
| Frequency Accuracy | ±1.7% max over temperature - ensures stable timing in industrial environments without calibration. |
| Supply Current | 105–450µA - scales with NDIV and RSET; enables battery operation for portable dimming systems. |
| Operating Temperature | –40°C to 85°C - qualified for commercial/industrial ambient conditions per LTC6992C grade. |
| Output Drive | ±20mA CMOS - directly drives logic inputs or small LEDs; requires series resistor for >20mA loads. |
| MOD Input Range | 0.1•VSET to 0.9•VSET (≈100mV–900mV) - matches standard DAC outputs and avoids rail-dependent nonlinearity. |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad (Pin 7) connected to GND. Low-profile 1mm height suitable for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Power supply input | 2.25V–5.5V supply; must be bypassed with 0.1µF capacitor directly to GND for noise immunity. |
| DIV (Pin 2) | Programmable divider & polarity select | 4-bit A/D input; resistor divider sets NDIV (1–16384) and output polarity (POL bit). |
| SET (Pin 3) | Frequency-setting node | Internally regulated to 1.00V; connects to RSET to generate ISET = 1.25µA–20µA for fMASTER programming. |
| MOD (Pin 4) | Analog PWM control input | Accepts 0.1•VSET to 0.9•VSET (≈100mV–900mV); linearly maps to 0–95% duty cycle with hard clamps. |
| GND (Pin 5) | Ground reference | Low-inductance ground plane connection required; exposed pad (Pin 7) must be soldered to GND for thermal and electrical performance. |
| OUT (Pin 6) | PWM output driver | CMOS rail-to-rail output; 30Ω typical impedance; sources/sinks up to ±20mA into resistive loads. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-controlled PWM | 0.1–0.9×VSET analog input enables direct interface with DACs or potentiometers without signal conditioning. |
| Single-resistor frequency setting | RSET (50kΩ–800kΩ) eliminates need for crystal, trimmer, or digital configuration-reduces BOM count and layout complexity. |
| Eight programmable division ratios | NDIV = 1, 4, 16, 64, 256, 1024, 4096, 16384 allows one part to cover wide frequency ranges from sub-Hz to 1MHz. |
| 0% to 95% duty cycle limit | Guaranteed full-off (0%) and safe upper clamp (95%) prevent MOSFET shoot-through or LED overcurrent in critical applications. |
| Low supply current | As low as 105µA at V+ = 2.25V and NDIV ≥16 enables multi-year battery life in portable dimmers and sensors. |
Applications
| LED Dimming Control | Heater Control |
|---|---|
|
Use Scenario: Adjustable brightness control for architectural or automotive LED arrays using analog voltage from microcontroller or sensor. IC Role / Device Role / Timing Role: Generates precision PWM waveform with 0%–95% duty cycle; replaces discrete 555-based circuits with higher stability and lower component count. Use Value: Eliminates need for external op-amps or DACs; 1.7% frequency accuracy ensures consistent dimming response across temperature. |
Use Scenario: Closed-loop thermal regulation in industrial ovens or automotive cabin heaters using thermistor feedback. IC Role / Device Role / Timing Role: Provides variable-duty-cycle drive signal to TRIAC or MOSFET gate driver; clamped 95% max prevents overheating during fault conditions. Use Value: Built-in 0%–95% limits replace external logic clamps; 115µA current at 100kHz reduces standby power in always-on systems. |
| PWM Servo Loops | High-Vibration Environments |
|
Use Scenario: Position control of RC servos or linear actuators in robotics where analog command voltage varies slowly. IC Role / Device Role / Timing Role: Converts analog voltage to stable PWM with <3.7% duty cycle error, immune to supply ripple due to internal VSET regulation. Use Value: Internal 1V reference and ±10nA MOD input bias ensure minimal drift vs. supply or temperature - critical for positional repeatability. |
Use Scenario: Power delivery in aerospace or transportation systems subject to shock, vibration, and wide thermal cycling. IC Role / Device Role / Timing Role: Provides robust timing core for motor drivers or lighting controllers where crystal oscillators may fail mechanically. Use Value: Silicon oscillator architecture withstands >20g vibration; –40°C to 85°C operation and AEC-Q100-compatible variants available. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-controlled PWM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6992IDCB-3#TRPBF | Same functionality and pinout; rated for –40°C to 85°C industrial temperature range (I-grade) vs. C-grade (0°C to 70°C) of LTC6992CDCB-3#TRPBF. | Required for designs operating below 0°C ambient or requiring extended temperature qualification. | Select when full –40°C start-up and guaranteed specs across –40°C to 85°C are mandatory. |
| LTC6992HDCB-3#TRPBF | Same functionality and pinout; rated for –40°C to 125°C high-temp range (H-grade); higher θJA (64°C/W) than C/I grades. | Suitable for under-hood automotive or industrial motor control enclosures with elevated ambient temperatures. | Choose for applications exceeding 85°C ambient where long-term reliability at 125°C junction is required. |
Compared with LTC6992CDCB-3#TRPBF, the I-grade alternative offers guaranteed operation down to –40°C without derating, while the H-grade extends usable ambient range to 125°C - both retain identical PWM accuracy, 0%–95% clamping, and DFN-6 footprint for drop-in thermal or environmental upgrades.
Availability
LTC6992CDCB-3#TRPBF is available at Aetrix Electronics and suitable for LED dimming control, heater control, and PWM servo loops requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for LTC6992CDCB-3#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 LTC6992CDCB-3#TRPBF belongs to the TimerBlox family - silicon timing devices designed to replace crystals, RC networks, and 555 timers with programmable, stable, low-power oscillators for analog-controlled timing applications.
FAQ
What is the duty cycle range of the LTC6992CDCB-3#TRPBF?
The LTC6992CDCB-3#TRPBF is specifically configured for a 0% to 95% duty cycle range. This means it can fully disable the output (0% duty) and cap conduction at 95%, preventing 100% continuous drive - a key safety feature for LED and heater control. The clamping behavior is inherent to the -3 variant and does not require external circuitry.
How do I set the output frequency of the LTC6992CDCB-3#TRPBF?
You set the output frequency of the LTC6992CDCB-3#TRPBF using two elements: (1) an external resistor RSET (50kΩ to 800kΩ) connected between SET and GND to program the master oscillator, and (2) a resistor divider on the DIV pin to select NDIV (1 to 16384). The final frequency is calculated as fOUT = 1MHz × 50kΩ / (NDIV × RSET).
What package type does the LTC6992CDCB-3#TRPBF use?
The LTC6992CDCB-3#TRPBF uses a 6-lead (2mm × 3mm) plastic DFN package (DCB), with an exposed thermal pad (Pin 7) that must be connected to GND for optimal thermal performance and electrical stability. Its 1mm profile supports high-density PCB layouts in space-constrained applications.
Does the LTC6992CDCB-3#TRPBF require external components to operate?
Yes - the LTC6992CDCB-3#TRPBF requires at minimum: (1) a 0.1µF bypass capacitor between V+ and GND, (2) an RSET resistor from SET to GND for frequency setting, and (3) a resistor divider on the DIV pin to configure NDIV and polarity. No external clock, crystal, or compensation network is needed.
Is the LTC6992CDCB-3#TRPBF suitable for automotive applications?
The LTC6992CDCB-3#TRPBF itself is a commercial-grade (C-temp: 0°C to 70°C) part and is not AEC-Q100 qualified. However, pin-compatible automotive variants exist - e.g., LTC6992HDCB-3#TRPBF (–40°C to 125°C, AEC-Q100 qualified) - which share identical electrical behavior and can be substituted where automotive reliability is required.
LTC6992CDCB-3#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- TimerBlox®
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 3.81Hz ~ 1MHz
- Voltage - Supply:
- 2.25V ~ 5.5V
- Current - Supply:
- 365 µA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6992CDCB-3#TRPBF FAQ
1.How can I place an order for LTC6992CDCB-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6992CDCB-3#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC6992CDCB-3#TRPBF reliable?
The price and inventory of LTC6992CDCB-3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6992CDCB-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6992CDCB-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6992CDCB-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6992CDCB-3#TRPBF?
LTC6992CDCB-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6992CDCB-3#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC6992CDCB-3#TRPBF?
For technical support, including LTC6992CDCB-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6992CDCB-3#TRPBF requirements.
6.How does Aetrix verify that LTC6992CDCB-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6992CDCB-3#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC6992CDCB-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6992CDCB-3#TRPBF?
All LTC6992CDCB-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6992CDCB-3#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC6992CDCB-3#TRPBF part is unused and in its original packaging.
Return procedure for LTC6992CDCB-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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