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Analog Devices Inc. LTC6992HDCB-4#TRMPBF
- Part No.:
- LTC6992HDCB-4#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6992HDCB-4#TRMPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,784
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Product details
Overview
LTC6992HDCB-4#TRMPBF 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 - ideal for automotive LED dimming and heater control.
For engineers reviewing the LTC6992HDCB-4#TRMPBF datasheet, LTC6992HDCB-4#TRMPBF pinout, LTC6992HDCB-4#TRMPBF application, or LTC6992HDCB-4#TRMPBF equivalent, this device offers verified AEC-Q100 qualification, DFN-6 package compatibility, deterministic VCO-style frequency programming, and factory-trimmed 1V SET reference with <1.7% frequency error - critical for closed-loop servo timing and battery-powered thermal management systems.
Technical Context
The LTC6992HDCB-4#TRMPBF implements a master oscillator (1MHz max) whose frequency is set by ISET current sourced through an external RSET resistor, with VSET regulated to 1.00V ±30mV. Its internal 4-bit A/D converter reads the DIV pin voltage to select one of eight NDIV values (1, 4, 16, 64, 256, 1024, 4096, 16384), enabling precise frequency division without digital interface.
Duty cycle is linearly controlled by VMOD input (0.1•VSET to 0.9•VSET), clamped at 5% min / 100% max per its -4 variant designation. The CMOS output driver sources/sinks ±20mA with 30Ω typical output resistance, and includes power-on reset, 500µs startup time, and long-term drift of 90ppm/√kHr - all specified across its full –40°C to 125°C operating range.
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 sleep-mode timing or high-speed motor control. |
| Duty Cycle Range | 5% to 100% - hard-clamped minimum/maximum ensures safe operation in heater or LED drive circuits where 0% or 100% could cause thermal runaway or open-circuit failure. |
| Frequency Accuracy | ±1.7% max over temperature - guaranteed across –40°C to 125°C, eliminating need for external calibration in automotive under-hood applications. |
| PWM Duty Cycle Error | ±3.7% max - measured over 0.2•VSET to 0.8•VSET input range, supporting stable feedback in analog PID loops without digital compensation. |
| Supply Voltage | 2.25V to 5.5V - single-supply operation compatible with Li-ion, 3.3V logic, and automotive 5V rails; includes 1.95V POR threshold. |
| Supply Current | 105µA to 450µA - scales with NDIV and RSET; as low as 105µA at V+ = 2.25V, RSET = 800kΩ, NDIV ≥ 16 - suitable for always-on battery monitoring. |
| Operating Temperature | –40°C to 125°C - H-grade qualification confirmed per datasheet Table "Specified Temperature Range", enabling use in engine control units and industrial PLCs. |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad (Pin 7) connected to GND; 1mm profile height; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | 2.25V–5.5V rail; requires local 0.1µF bypass to GND; powers internal oscillator, A/D, and CMOS output stage. |
| DIV | Programmable divider & polarity input | 4-bit A/D input; resistor-divider voltage sets NDIV (1–16384) and output polarity (POL bit); ≤100pF capacitance required for settling. |
| SET | Frequency-setting reference node | Internally regulated to 1.00V ±30mV; ISET = VSET/RSET programs master oscillator; RSET = 50kΩ–800kΩ sets fMASTER. |
| MOD | Analog PWM control input | 0.1•VSET to 0.9•VSET (≈100mV–900mV) linearly controls duty cycle; outside range clamps to 5%/100% for LTC6992-4. |
| GND | Ground reference | Low-inductance return path for supply, SET, MOD, and output; exposed pad must be soldered for thermal performance. |
| OUT | CMOS PWM output | Rail-to-rail (GND to V+) switching; ±20mA drive capability; 30Ω typical output impedance; requires series resistor when driving LEDs or low-Z loads. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications across –40°C to 125°C; validated for high-vibration, high-acceleration environments per datasheet footnote. |
| Voltage-controlled PWM | True analog modulation: 0.1•VSET to 0.9•VSET input yields linear duty cycle response - eliminates need for DAC or microcontroller PWM peripherals. |
| Factory-trimmed 1V SET reference | VSET = 1.00V ±30mV with ±75µV/°C drift; removes sensitivity to RSET tolerance in frequency calculation fOUT = 1MHz·50k/(NDIV·RSET). |
| Eight selectable NDIV ratios | NDIV = 1, 4, 16, 64, 256, 1024, 4096, 16384 - configured via resistor divider on DIV pin; no serial interface or firmware required. |
| Low quiescent current | As low as 105µA at 2.25V/800kΩ/NDIV≥16 - enables multi-year operation from coin-cell batteries in wireless sensor nodes. |
| Fast 500µs startup | Guaranteed time from V+ ramp to stable PWM output; supports rapid system wake-up in duty-cycled power architectures. |
Applications
| Automotive LED Headlamp Dimming | Industrial Heater Duty Cycling |
|---|---|
|
Use Scenario: Precise brightness control of high-power LED arrays in vehicle headlamps under varying ambient temperature and battery voltage. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRMPBF acts as analog PWM generator, accepting voltage feedback from thermistor network and delivering stable 5%–100% duty cycle to MOSFET gate driver. Use Value: Eliminates microcontroller dependency and software timing jitter; AEC-Q100 rating ensures reliability in under-hood environments up to 125°C junction temperature. |
Use Scenario: Closed-loop thermal regulation of resistive heating elements in industrial ovens, where EMI-sensitive analog control is preferred over digital PWM. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRMPBF serves as voltage-controlled oscillator with fixed-frequency, variable-duty-cycle output driving zero-crossing SSR. Use Value: ±3.7% duty cycle accuracy and <1.7% frequency error maintain consistent thermal power delivery despite supply ripple or temperature drift. |
| Portable Medical Pump Motor Control | Battery-Powered HVAC Actuator |
|
Use Scenario: Low-noise, low-power speed control of brushless DC motors in handheld infusion pumps requiring silent, jitter-free operation. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRMPBF provides clean CMOS PWM signal to motor gate driver, with frequency set to avoid audible noise bands (e.g., >20kHz). Use Value: 105µA min supply current extends battery life; 500µs startup enables immediate motor response upon button press without MCU boot delay. |
Use Scenario: Position control of damper actuators in smart thermostats using PWM-driven stepper or solenoid drivers powered by 3.3V coin cell. IC Role / Device Role / Timing Role: LTC6992HDCB-4#TRMPBF functions as ultra-low-power timing core, generating 100Hz–1kHz PWM from 2.25V supply to regulate actuator coil current. Use Value: DFN-6 package (2mm × 3mm) fits space-constrained PCBs; 2.25V operation preserves runtime as battery discharges below 3.0V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-controlled PWM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6992HDCB-2#TRMPBF | 5% to 95% duty cycle range; same package, temp grade, and electrical specs except DMIN/DMAX limits. | Suitable where hard 100% duty cycle is prohibited (e.g., fan control with stall protection). | Select LTC6992HDCB-2#TRMPBF if system safety requires strict 5–95% clamping; otherwise LTC6992HDCB-4#TRMPBF provides full 5–100% range. |
| LTC6992IDCB-4#TRMPBF | Same functionality and pinout, but rated for –40°C to 85°C (I-grade) instead of –40°C to 125°C (H-grade). | Valid for commercial/industrial indoor applications; not qualified for under-hood or high-temp industrial enclosures. | Choose LTC6992IDCB-4#TRMPBF only for cost-sensitive designs operating strictly within 85°C ambient; LTC6992HDCB-4#TRMPBF is mandatory for automotive or extended-temp deployments. |
Compared with LTC6992HDCB-2#TRMPBF, the LTC6992HDCB-4#TRMPBF enables full-range actuation (5–100%) critical for heater-on/full-brightness modes; versus LTC6992IDCB-4#TRMPBF, it guarantees parametric performance at 125°C junction temperature - essential for AEC-Q100 compliance and under-hood reliability.
Availability
LTC6992HDCB-4#TRMPBF is available at Aetrix Electronics and suitable for automotive lighting systems, industrial thermal controllers, portable medical devices, and battery-powered HVAC actuators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6992HDCB-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 industrial, automotive, communications, and healthcare markets since 1965.
The TimerBlox family - including LTC6992HDCB-4#TRMPBF - was engineered to replace discrete 555-based timers and microcontroller PWM peripherals with pin-configurable, analog-controlled silicon oscillators for robust, low-jitter, low-power timing in harsh environments.
FAQ
What is the maximum output frequency of the LTC6992HDCB-4#TRMPBF?
The LTC6992HDCB-4#TRMPBF achieves a maximum output frequency of 1MHz when configured with NDIV = 1 and RSET = 50kΩ. This is derived from the formula fOUT = 1MHz × 50kΩ / (NDIV × RSET), and is fully characterized and guaranteed across its –40°C to 125°C operating range per the Rev. D datasheet.
Does the LTC6992HDCB-4#TRMPBF require external clocking or digital configuration?
No, the LTC6992HDCB-4#TRMPBF operates autonomously with no external clock or digital interface. Frequency is set by an external RSET resistor on the SET pin, and NDIV/divider ratio is selected via a resistor divider on the DIV pin - both are analog, resistor-programmed configurations requiring zero firmware or serial communication.
How does the LTC6992HDCB-4#TRMPBF achieve its 5% to 100% duty cycle range?
The LTC6992HDCB-4#TRMPBF implements hard-coded clamping circuitry specific to the "-4" variant: when VMOD falls below 0.1•VSET, duty cycle is held at 5%; when VMOD exceeds 0.9•VSET, duty cycle is held at 100%. This behavior is inherent to the die design and confirmed in the "DEVICE NAME / PWM DUTY CYCLE RANGE" table of the datasheet.
Is the exposed pad on the LTC6992HDCB-4#TRMPBF DFN package electrically connected?
Yes, the exposed pad (Pin 7) on the LTC6992HDCB-4#TRMPBF is internally connected to GND. The datasheet explicitly states "EXPOSED PAD (PIN 7) IS GND" and recommends PCB connection for optimal thermal performance and electrical stability - not optional for production designs.
Can the LTC6992HDCB-4#TRMPBF operate from a 2.25V supply while maintaining full specification?
Yes, the LTC6992HDCB-4#TRMPBF is fully specified down to 2.25V: supply current, frequency accuracy (±1.7%), duty cycle error (±3.7%), and output drive (±20mA) are all guaranteed across 2.25V–5.5V per the "ELECTRICAL CHARACTERISTICS" table, including conditions marked with the "l" symbol denoting full-temperature-range validation.
LTC6992HDCB-4#TRMPBF 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#TRMPBF FAQ
1.How can I place an order for LTC6992HDCB-4#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6992HDCB-4#TRMPBF 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#TRMPBF reliable?
The price and inventory of LTC6992HDCB-4#TRMPBF 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#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6992HDCB-4#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6992HDCB-4#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6992HDCB-4#TRMPBF?
LTC6992HDCB-4#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6992HDCB-4#TRMPBF 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#TRMPBF?
For technical support, including LTC6992HDCB-4#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6992HDCB-4#TRMPBF requirements.
6.How does Aetrix verify that LTC6992HDCB-4#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6992HDCB-4#TRMPBF 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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6992HDCB-4#TRMPBF?
All LTC6992HDCB-4#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6992HDCB-4#TRMPBF, 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#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6992HDCB-4#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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