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Analog Devices Inc. LTC6992HDCB-3#TRPBF
- Part No.:
- LTC6992HDCB-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6992HDCB-3#TRPBF.pdf
- Description:
- IC OSC SILICON PROG 6-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,424
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Product details
Overview
LTC6992HDCB-3#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 0% to 95% duty cycle range, supports output frequencies from 3.81 Hz to 1 MHz via RSET and DIV pin programming, operates from 2.25 V to 5.5 V, and features ±3.7% max PWM duty cycle error over –40°C to 125°C. It is used in LED dimming and heater control where wide temperature stability and low supply current are critical.
For engineers reviewing the LTC6992HDCB-3#TRPBF datasheet, LTC6992HDCB-3#TRPBF pinout, LTC6992HDCB-3#TRPBF application, or LTC6992HDCB-3#TRPBF equivalent, this page provides verified package mapping (6-lead DFN, 2 mm × 3 mm), confirmed pin functions (MOD, SET, DIV, OUT, V+, GND), exact duty cycle limits (0–95%), frequency accuracy (±1.7% max), and automotive-grade thermal qualification (–40°C to 125°C).
Technical Context
The LTC6992HDCB-3#TRPBF implements a master oscillator with fixed 1 MHz reference scaling, where output frequency is set by RSET (50 kΩ to 800 kΩ) and NDIV (1 to 16384) derived from a 4-bit A/D conversion of the DIV pin voltage. Its PWM generation uses a voltage-limited linear transfer function: duty cycle = (VMOD(LIM) – 0.1·VSET) / 0.8·VSET, with clamping at 0% or 95% based on version-specific limits.
It integrates internal VSET regulation (1.00 V ±30 mV), programmable polarity (POL bit), digital filtering for noise immunity, and power-on reset with 500 µs startup time. The device halts oscillation when ISET falls below ~500 nA, enabling low-power disable functionality without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 3.81 Hz to 1 MHz - selectable via RSET resistor and 8-step NDIV divider (1, 4, 16…16384) |
| Duty Cycle Range | 0% to 95% - hard-clamped limits ensure safe operation in LED/thermal control loops |
| Frequency Accuracy | ±1.7% max over full temperature range - enables stable timing without calibration |
| PWM Duty Cycle Error | ±3.7% max - specified across VMOD = 0.2·VSET to 0.8·VSET, ensuring predictable dimming/actuation |
| Supply Voltage | 2.25 V to 5.5 V - compatible with Li-ion, 3.3 V, and 5 V systems without level-shifting |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive and industrial environments |
| Supply Current | 105 µA to 450 µA - scales with NDIV and V+, enabling ultra-low-power standby modes |
Pinout & Package
Package: 6-lead (2 mm × 3 mm) plastic DFN (DCB), exposed pad (Pin 7) connected to GND. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 6) | Digital CMOS output | Drives loads up to ±20 mA; swings rail-to-rail (GND to V+); requires series resistor for LED/low-Z loads |
| V+ (Pin 1) | Power supply input | 2.25 V to 5.5 V; must be bypassed with 0.1 µF capacitor directly to GND for jitter reduction |
| DIV (Pin 4) | Programmable divider/polarity input | 4-bit A/D input; resistor divider sets NDIV (1–16384) and POL bit (inverts duty curve) |
| SET (Pin 3) | Frequency-setting node | Internally regulated to 1.00 V; ISET = VSET/RSET programs master oscillator (RSET = 50 kΩ–800 kΩ) |
| MOD (Pin 2) | Analog PWM control input | 0.1·VSET to 0.9·VSET (≈100–900 mV) sets linear duty; clamps at 0%/95% outside range |
| GND (Pin 5) | Ground reference | Low-inductance connection required; exposed pad (Pin 7) is GND and may be soldered for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-controlled PWM | 0 V to 1 V analog input (referred to VSET) enables direct DAC or sensor interface without op-amp scaling |
| Configurable frequency divider | 8 discrete NDIV ratios (1–16384) selected via resistor-divider on DIV pin - no digital interface needed |
| Automotive temperature grade | H-grade qualification (–40°C to 125°C) with guaranteed specs - suitable for engine control, lighting, and ADAS subsystems |
| Low-jitter oscillator core | Period jitter as low as 0.15% P-P at NDIV = 16 - maintains clean edges for timing-critical PWM applications |
| Self-contained start-up | 500 µs typical start-up time with internal POR - eliminates need for external reset circuitry |
Applications
| LED Dimming Control | Heater Control |
|---|---|
Use Scenario: Precise brightness adjustment of automotive interior LEDs across wide ambient temperatures. IC Role / Device Role / Timing Role: Generates temperature-stable PWM signal with 0–95% duty cycle to drive MOSFET-based LED current sinks. Use Value: Eliminates microcontroller PWM overhead; H-grade operation ensures consistent dimming from –40°C cold start to 125°C under-hood conditions. | Use Scenario: Closed-loop thermal management of battery pack heaters in EVs. IC Role / Device Role / Timing Role: Converts analog temperature feedback into variable-duty PWM to regulate heater power dissipation. Use Value: ±3.7% duty cycle accuracy and ±1.7% frequency stability maintain precise thermal setpoints without software compensation. |
| PWM Servo Loops | High-Vibration Environments |
Use Scenario: Position control of solenoid actuators in industrial valves subject to EMI and supply ripple. IC Role / Device Role / Timing Role: Provides jitter-immune, rail-to-rail PWM output synchronized to analog control voltage. Use Value: Internal VSET regulation and 0.1 µF bypass requirement suppress supply noise; CMOS output drives gate drivers directly. | Use Scenario: Fan speed control in aerospace avionics cabinets experiencing shock and vibration. IC Role / Device Role / Timing Role: Generates robust PWM waveform immune to mechanical stress-induced parameter drift. Use Value: DFN package with exposed GND pad improves mechanical anchoring and thermal stability; long-term drift <90 ppm/√kHr ensures years of reliable operation. |
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-1#TRPBF | 0% to 100% duty cycle range; no lower/upper clamping - allows full on/off states | Suitable for applications requiring complete output disable (0%) or continuous conduction (100%) | Select when system logic requires hard stop/start behavior rather than 5% minimum or 95% maximum limits |
| LTC6992HDCB-4#TRPBF | 5% to 100% duty cycle range; clamps low end at 5%, high end at 100% | Better for motor control where minimum duty prevents stalling and maximum enables full torque | Choose when load requires guaranteed minimum conduction time and unrestricted upper limit |
Compared with LTC6992HDCB-1#TRPBF and LTC6992HDCB-4#TRPBF, the LTC6992HDCB-3#TRPBF uniquely supports zero-duty operation while limiting maximum to 95%, making it optimal for LED dimming where full-on may cause thermal runaway and zero-off is essential for safety shutdown.
Availability
LTC6992HDCB-3#TRPBF is available at Aetrix Electronics and suitable for LED dimming control, heater regulation, PWM servo loops, and high-vibration environment designs requiring stable component supply across automotive and industrial lifecycles.
Supply support for LTC6992HDCB-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 LTC6992HDCB-3#TRPBF belongs to the TimerBlox family - silicon timing devices engineered for analog-programmable, low-component-count timing solutions in space-constrained and thermally demanding applications.
FAQ
What is the duty cycle range of the LTC6992HDCB-3#TRPBF?
The LTC6992HDCB-3#TRPBF has a guaranteed duty cycle range of 0% to 95%. This means the output can be fully off (0% duty) or up to 95% on, with hard clamping at both extremes. Unlike the -1 or -4 variants, it does not support 100% continuous conduction, making it ideal for applications like LED dimming where full-on operation risks thermal overstress.
How is the output frequency programmed on the LTC6992HDCB-3#TRPBF?
The LTC6992HDCB-3#TRPBF output frequency is set using two elements: an external resistor RSET (50 kΩ to 800 kΩ) connected between SET and GND, and a resistor divider on the DIV pin that selects one of eight divider ratios (NDIV = 1, 4, 16…16384). The resulting fOUT = 1 MHz × 50 kΩ / (NDIV × RSET), with ±1.7% max error over temperature.
Does the LTC6992HDCB-3#TRPBF require external components to operate?
Yes - the LTC6992HDCB-3#TRPBF requires at minimum a 0.1 µF bypass capacitor between V+ and GND, an RSET resistor from SET to GND, and a resistor divider on the DIV pin to select NDIV. The MOD pin accepts a 0–1 V analog control signal directly. No crystal, PLL loop filter, or microcontroller is needed, enabling minimal-BOM timing solutions.
Is the LTC6992HDCB-3#TRPBF qualified for automotive use?
Yes - the LTC6992HDCB-3#TRPBF carries the "H" grade designation, meaning it is specified and tested over –40°C to +125°C and meets AEC-Q100 requirements for automotive applications. Its DFN package, low supply current, and robust parametric stability make it suitable for under-hood lighting, HVAC actuators, and battery thermal management systems.
What is the purpose of the DIV pin on the LTC6992HDCB-3#TRPBF?
The DIV pin on the LTC6992HDCB-3#TRPBF serves a dual function: it sets the programmable frequency divider ratio (NDIV) via a 4-bit A/D conversion of its voltage, and its MSB (POL bit) determines output polarity - when POL = 1, the duty cycle decreases as the MOD voltage increases. This enables inverted control response without external logic.
LTC6992HDCB-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:
- -40°C ~ 125°C
- Supplier Device Package:
- 6-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6992HDCB-3#TRPBF FAQ
1.How can I place an order for LTC6992HDCB-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6992HDCB-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 LTC6992HDCB-3#TRPBF reliable?
The price and inventory of LTC6992HDCB-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 LTC6992HDCB-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6992HDCB-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6992HDCB-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6992HDCB-3#TRPBF?
LTC6992HDCB-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6992HDCB-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 LTC6992HDCB-3#TRPBF?
For technical support, including LTC6992HDCB-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6992HDCB-3#TRPBF requirements.
6.How does Aetrix verify that LTC6992HDCB-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6992HDCB-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 LTC6992HDCB-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6992HDCB-3#TRPBF?
All LTC6992HDCB-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6992HDCB-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 LTC6992HDCB-3#TRPBF part is unused and in its original packaging.
Return procedure for LTC6992HDCB-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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