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Analog Devices Inc. LTC6992HDCB-4#TRPBF
- Part No.:
- LTC6992HDCB-4#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6992HDCB-4#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,263
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Product details
Overview
LTC6992HDCB-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. It delivers 5% to 100% programmable duty cycle range, operates from 2.25V to 5.5V supply, supports output frequencies from 3.81Hz to 1MHz via RSET and DIV pin configuration, and features ±3.7% max PWM duty cycle error over –40°C to 125°C - used in automotive LED dimming and heater control loops.
For engineers reviewing the LTC6992HDCB-4#TRPBF datasheet, LTC6992HDCB-4#TRPBF pinout, LTC6992HDCB-4#TRPBF application, or LTC6992HDCB-4#TRPBF equivalent, this page provides verified package mapping (6-lead DFN), confirmed MOD/SET/DIV pin functions, temperature-grade validation (–40°C to 125°C H-grade), and real-world design constraints including 50kΩ–800kΩ RSET range and 0.1V–0.9V linear VMOD input window.
Technical Context
The LTC6992HDCB-4#TRPBF implements a master oscillator with fixed 1MHz reference scaled by ISET (set via RSET), followed by an 8-step programmable divider (NDIV = 1, 4, 16, ..., 16384) controlled by a 4-bit A/D converter on the DIV pin. Its PWM generation uses a voltage-limited linear transfer function where duty cycle = (VMOD(LIM) – 0.1·VSET)/0.8·VSET, with clamping at 5% min / 100% max per version -4 specification.
It integrates internal VSET regulation (1.00V ±30mV), low-drift current sourcing (±75µV/°C VSET drift), and CMOS output capable of ±20mA drive. The device includes power-on reset, 500µs startup time, and long-term stability of 90ppm/√kHr - all qualified per AEC-Q100 for automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 3.81Hz to 1MHz - set by RSET (50kΩ–800kΩ) and NDIV (1–16384); enables ultra-low-power timing or high-speed PWM control |
| Duty Cycle Range | 5% to 100% - hard-clamped limits ensure reliable minimum conduction and full-on capability in heater/LED drivers |
| Supply Voltage | 2.25V to 5.5V - supports direct connection to Li-ion, 3.3V, and 5V rails without external regulators |
| Max Duty Cycle Error | ±3.7% - guaranteed over full temperature range; critical for closed-loop servo accuracy |
| Operating Temp Range | –40°C to 125°C - H-grade qualification meets under-hood automotive requirements |
| Supply Current | 105µA to 450µA - scales with NDIV and V+; enables battery-operated applications with multi-year runtime |
| MOD Input Range | 0.1·VSET to 0.9·VSET (~100mV–900mV) - linear region avoids clamping; requires precise VSET regulation |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad (Pin 7) connected to GND. RoHS-compliant, lead-free finish, tape-and-reel packaging (#TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 6) | Digital PWM output | CMOS rail-to-rail output sourcing/sinking up to ±20mA; drives MOSFET gates or LED strings directly |
| GND (Pin 2) | Power and signal reference | Low-inductance ground plane connection required; exposed pad must be soldered for thermal and electrical performance |
| MOD (Pin 1) | Analog duty cycle control input | Accepts 0.1·VSET to 0.9·VSET (≈100mV–900mV); outside range clamps output to 5% or 100% |
| V+ (Pin 5) | Positive supply | 2.25V–5.5V operation; bypass with 0.1µF capacitor directly to GND for noise immunity |
| DIV (Pin 4) | Divider ratio and polarity select | Voltage divider sets NDIV (1–16384) and POL bit; <100pF capacitance required for stable A/D conversion |
| SET (Pin 3) | Frequency-setting node | Internally regulated to 1.00V ±30mV; connects to RSET (50kΩ–800kΩ) to program master oscillator frequency |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-controlled PWM | Direct 0.1V–0.9V analog input maps linearly to 5%–100% duty cycle - eliminates need for microcontroller DAC or digital PWM logic |
| AEC-Q100 qualified | H-grade (–40°C to 125°C) qualification ensures reliability in automotive under-hood applications like HVAC actuators and lighting modules |
| Programmable frequency divider | 8 discrete NDIV ratios (1, 4, 16, ..., 16384) selected via resistor divider on DIV pin - enables single-part flexibility across wide timing ranges |
| Low supply current | As low as 105µA at V+ = 2.25V and NDIV ≥ 16 - extends battery life in portable medical or sensor nodes |
| Stable VSET reference | 1.00V ±30mV regulation with ±75µV/°C drift - ensures frequency accuracy independent of RSET tolerance over temperature |
Applications
| Automotive LED Headlamp Dimming | Industrial Heater Control Loop |
|---|---|
|
Use Scenario: Precise brightness adjustment of high-power LED arrays in adaptive driving beam (ADB) systems under varying ambient temperatures. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRPBF generates temperature-stable 5%–100% PWM signals to drive external MOSFETs controlling LED current. Use Value: ±3.7% duty cycle error and –40°C to 125°C operation eliminate thermal recalibration; 5% minimum ensures standby illumination compliance. |
Use Scenario: Closed-loop thermal management of resistive heating elements in industrial ovens, where rapid response and stable low-duty pulses prevent overshoot. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRPBF acts as analog PWM generator receiving feedback from thermistor network via op-amp conditioning into MOD pin. Use Value: 500µs startup time enables fast system recovery after fault events; 20mA output drive simplifies gate driving without buffer stages. |
| Portable Medical Infusion Pump Motor Drive | High-Vibration Actuator Timing |
|
Use Scenario: Battery-powered infusion pumps requiring ultra-low quiescent current and precise flow-rate control via stepper motor microstepping PWM. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRPBF supplies synchronized, low-jitter PWM to motor driver ICs, with frequency tuned via RSET for optimal torque/noise trade-off. Use Value: 105µA supply current at 2.25V extends single-cell Li-ion runtime; ±1.7% max frequency error ensures consistent delivery accuracy over battery discharge. |
Use Scenario: Solenoid-based fuel injectors or valve actuators operating in high-G shock environments (e.g., aerospace or off-road vehicles). IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRPBF delivers robust, jitter-free PWM timing immune to supply ripple due to internal VSET regulation and POR circuitry. Use Value: AEC-Q100 qualification and 150°C junction rating ensure survival during transient thermal spikes; CMOS output withstands ESD per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-controlled PWM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TLC555IP | Timer-based solution requiring external R/C network; no integrated VSET regulation or NDIV divider; ±5% duty cycle accuracy; not AEC-Q100 qualified | General-purpose timing only; unsuitable for automotive or precision closed-loop control | Select only for cost-sensitive non-automotive designs where ±5% duty cycle error and manual calibration are acceptable |
| Microchip MIC5014YM5-TR | Fixed 50% duty cycle; no analog MOD input; designed for gate driving, not PWM generation; lacks frequency programming capability | Replaces gate drivers, not PWM controllers; cannot implement variable-duty analog control | Use only when replacing legacy MOSFET drivers - not a functional substitute for LTC6992HDCB-4#TRPBF's analog PWM capability |
Compared with TLC555IP and MIC5014YM5-TR, the LTC6992HDCB-4#TRPBF uniquely combines factory-trimmed VSET regulation, 8-step NDIV scaling, and AEC-Q100 H-grade qualification - enabling drop-in replacement in automotive thermal and lighting systems where duty cycle linearity and temperature stability are non-negotiable.
Availability
LTC6992HDCB-4#TRPBF is available at Aetrix Electronics and suitable for automotive LED dimming, industrial heater control, and portable medical equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6992HDCB-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 TimerBlox family - including LTC6992HDCB-4#TRPBF - was engineered for plug-and-play timing solutions in space-constrained, high-reliability systems where microcontroller-based PWM introduces latency, firmware overhead, or qualification complexity.
FAQ
What is the exact duty cycle range supported by the LTC6992HDCB-4#TRPBF?
The LTC6992HDCB-4#TRPBF supports a guaranteed 5% to 100% duty cycle range. This is defined by its version -4 designation: minimum duty cycle clamps at 5% when VMOD ≤ 0.1·VSET, and maximum reaches 100% when VMOD ≥ 0.9·VSET. The LTC6992HDCB-4#TRPBF does not support 0% or sub-5% conduction - ensuring safe minimum power delivery in heater and LED applications.
How do I configure the output frequency of the LTC6992HDCB-4#TRPBF?
Configure the LTC6992HDCB-4#TRPBF output frequency using two elements: (1) RSET resistor from SET pin to GND sets the master oscillator frequency (fMASTER = 1MHz × 50kΩ / RSET), and (2) a resistor divider on the DIV pin selects NDIV (1, 4, 16, ..., 16384), yielding fOUT = fMASTER / NDIV. For example, RSET = 200kΩ and DIVCODE = 4 (NDIV = 16) gives fOUT = 312.5Hz. The LTC6992HDCB-4#TRPBF requires no external clock or programming interface.
Is the LTC6992HDCB-4#TRPBF qualified for automotive use?
Yes, the LTC6992HDCB-4#TRPBF is AEC-Q100 qualified for automotive applications. Its H-grade rating guarantees full electrical performance from –40°C to 125°C ambient, includes enhanced ESD protection, and undergoes stress testing per automotive reliability standards. It is explicitly listed in Analog Devices' automotive product portfolio and approved for under-hood use in lighting, HVAC, and body control modules.
What is the purpose of the SET pin on the LTC6992HDCB-4#TRPBF?
The SET pin on the LTC6992HDCB-4#TRPBF is a regulated voltage node held at 1.00V ±30mV. Connecting RSET between SET and GND establishes ISET = VSET/RSET, which directly programs the master oscillator frequency. Because VSET is internally regulated, frequency accuracy depends primarily on RSET tolerance and the LTC6992HDCB-4#TRPBF's inherent ±1.7% frequency error - not on supply voltage or temperature drift of the resistor.
Can the LTC6992HDCB-4#TRPBF operate from a 2.25V supply?
Yes, the LTC6992HDCB-4#TRPBF is fully specified to operate from 2.25V to 5.5V. At 2.25V, it delivers full functionality including 5%–100% duty cycle control, 3.81Hz–1MHz frequency range (with appropriate RSET/NDIV), and ±20mA output drive. Supply current drops to 105µA (typical) at V+ = 2.25V and NDIV ≥ 16 - making the LTC6992HDCB-4#TRPBF ideal for single-cell battery systems.
LTC6992HDCB-4#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:
- -40°C ~ 125°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6992HDCB-4#TRPBF FAQ
1.How can I place an order for LTC6992HDCB-4#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6992HDCB-4#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 LTC6992HDCB-4#TRPBF reliable?
The price and inventory of LTC6992HDCB-4#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6992HDCB-4#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6992HDCB-4#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6992HDCB-4#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6992HDCB-4#TRPBF?
LTC6992HDCB-4#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6992HDCB-4#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 LTC6992HDCB-4#TRPBF?
For technical support, including LTC6992HDCB-4#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6992HDCB-4#TRPBF requirements.
6.How does Aetrix verify that LTC6992HDCB-4#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6992HDCB-4#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 LTC6992HDCB-4#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6992HDCB-4#TRPBF?
All LTC6992HDCB-4#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6992HDCB-4#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 LTC6992HDCB-4#TRPBF part is unused and in its original packaging.
Return procedure for LTC6992HDCB-4#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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