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Texas Instruments TPL5111DDCR
- Part No.:
- TPL5111DDCR
- Manufacturer:
- Texas Instruments
- Category:
- Programmable Timers and Oscillators
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPL5111DDCR.pdf
- Description:
- IC OSC PROG TIMER NANO PWR 6TSOT
- Quantity:
- Payment:
- Shipping:
Inventory:7,560
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Product details
Overview
TPL5111DDCR from Texas Instruments is a nano-power system timer IC designed for power gating control in ultra-low-power battery-operated systems. It delivers 35 nA typical supply current at 2.5 V, supports resistor-selectable time intervals from 100 ms to 7200 s with ±0.6% typical accuracy, and features dual operating modes (timer and one-shot) via the EN/ONE_SHOT pin. It enables duty-cycled wake-up of microcontrollers like CC2531 in wireless sensor nodes.
For engineers reviewing the TPL5111DDCR datasheet, TPL5111DDCR pinout, TPL5111DDCR application, or TPL5111DDCR equivalent, this page provides verified functional mode behavior, validated timing accuracy over voltage and temperature, confirmed SOT-23-6 package mapping, real-world power-gating implementation constraints, and direct alternative part comparisons for IoT sensor node design.
Technical Context
The TPL5111DDCR integrates a low-power oscillator, resistance-to-time converter, and digital logic control block to generate precise periodic or single-shot enable pulses on DRVn. Its DELAY/M_DRV pin performs dual function: analog measurement of external resistor (500 Ω–170 kΩ) during power-on reset to set tIP, then transitions to digital input for manual power-on triggering with 20 ms debounce.
Operation depends critically on two synchronous inputs: DONE (µC-generated rising-edge watchdog signal, min 100 ns pulse width) and EN/ONE_SHOT (hard-wired logic level determining timer vs. one-shot mode). DRVn output duration is tIP − 50 ms unless DONE is received earlier, and DRVn is active-HIGH to drive LDO/DC-DC enable pins directly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 35 nA typical at 2.5 V - enables >10-year battery life in coin-cell–powered sensors |
| Time Interval Range | 100 ms to 7200 s (2 hours) - selectable via external resistor, 1650 discrete steps |
| Timing Accuracy | ±0.6% typical (excluding REXT tolerance) - ensures predictable wake-up scheduling |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with Li-ion, alkaline, and regulated 3.3 V/5 V rails |
| Oscillator Stability | ±100 ppm/°C over –40°C to +105°C - maintains timing integrity across industrial environments |
| DONE Input Threshold | VIL = 0.3×VDD, VIH = 0.7×VDD - ensures robust interface with standard GPIOs |
| DRVn Output Drive | VOH = VDD − 0.3 V @ 100 µA - directly interfaces with enable pins of common LDOs (e.g., TPS7A05) |
Pinout & Package
Package: 6-pin SOT-23 (DDC), body size 3.00 mm × 3.00 mm, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Accepts 1.8–5.5 V; powers internal oscillator and logic; must be decoupled with ≥0.1 µF ceramic capacitor |
| 2 - GND | Ground reference | Analog and digital ground shared; requires low-impedance PCB connection to minimize noise coupling |
| 3 - DELAY/M_DRV | Configurable analog/digital terminal | During POR: reads external REXT (500 Ω–170 kΩ) to set tIP; after startup: accepts manual HIGH pulse ≥20 ms to trigger immediate wake-up |
| 4 - DONE | Watchdog input | µC-driven rising-edge signal (min 100 ns); resets DRVn pulse early if received before tIP − 50 ms |
| 5 - DRVn | Power-gating output | Active-HIGH open-drain–compatible output; drives LDO/DC-DC EN pin; pulse width = tIP − 50 ms (or shorter if DONE received) |
| 6 - EN/ONE_SHOT | Mode selection input | Hard-wired HIGH = periodic timer mode; hard-wired LOW = one-shot mode; no dynamic switching allowed |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 35 nA typical supply current enables >10-year operation on CR2032 (220 mAh) when tIP ≥ 30 s |
| Resistor-programmable timing | Single external resistor (no programming interface required) sets 1650 discrete intervals from 100 ms to 7200 s |
| Dual operational modes | Hardware-selectable timer (periodic wake-up) or one-shot (single boot) via EN/ONE_SHOT pin level |
| Manual wake-up capability | DELAY/M_DRV pin doubles as momentary switch input with built-in 20 ms debounce and asynchronous reset |
| Integrated watchdog handshake | DONE input allows µC to confirm successful execution and terminate DRVn early, preventing unnecessary power-on duration |
Applications
| Wireless Sensor Node | Smart Thermostat |
|---|---|
|
Use Scenario: Battery-powered humidity/temperature node using HDC1000 and CC2531 RF SoC transmits data every 30–60 seconds. IC Role / Device Role / Timing Role: TPL5111DDCR gates power to entire subsystem (LDO, µC, sensor, RF) between measurements. Use Value: Reduces average system current from ~10 µA to ~50 nA, extending CR2032 life from months to >5 years. |
Use Scenario: Wall-mounted thermostat samples ambient air every 2 minutes and updates display/wireless status only when delta exceeds threshold. IC Role / Device Role / Timing Role: TPL5111DDCR triggers full subsystem wake-up; µC performs ADC, logic, and display update, then signals DONE before sleep. Use Value: Eliminates µC RTC leakage and peripheral bias currents during 99.9% of operation, meeting Energy Star standby requirements. |
| Intruder Detection System | White Goods Monitor |
|
Use Scenario: PIR-based motion detector in security system wakes every 5 seconds to check sensor state and transmit alert if triggered. IC Role / Device Role / Timing Role: TPL5111DDCR controls power to PIR signal conditioner, µC, and sub-GHz transmitter (e.g., CC1101). Use Value: Achieves <1 µA average current despite frequent wake-ups, enabling 10+ year operation on AA batteries. |
Use Scenario: Refrigerator door-open monitor uses TPL5111DDCR to wake microcontroller every 10 seconds to read reed switch and log event if opened. IC Role / Device Role / Timing Role: TPL5111DDCR acts as autonomous wake scheduler; µC executes minimal I/O check and returns to sleep within 5 ms. Use Value: Removes need for µC internal timer wake-up, avoiding its higher leakage and clock circuitry power overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nano-power timer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G01DBVR | Reset supervisor with programmable delay (1.25 ms–10 s); no DONE handshake or one-shot mode; 1.4 µA quiescent current | Limited to fixed-delay reset assertion; cannot gate power based on µC completion signal | Choose only for simple power-on delay where µC-level watchdog coordination is unnecessary |
| MAX13050ASA+ | Ultra-low-power timer with I²C interface (300 nA); supports 10 ms–1000 s range; requires MCU firmware control | Requires active µC involvement for configuration and mode control; adds software complexity and boot-time overhead | Prefer when dynamic interval adjustment or multi-timer synchronization is required; not drop-in for TPL5111DDCR hardware-only use cases |
Compared with TPS3808G01DBVR and MAX13050ASA+, the TPL5111DDCR uniquely combines hardware-configured timing, DONE-based pulse termination, and true nano-power operation without MCU intervention-making it optimal for fully autonomous, maintenance-free sensor nodes.
Availability
TPL5111DDCR is available at Aetrix Electronics and suitable for wireless sensor nodes, smart thermostats, intruder detection systems, and white goods monitors requiring stable component supply and long-term lifecycle support.
Supply support for TPL5111DDCR 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPL5111DDCR belongs to TI's nano-power timer product line, engineered specifically to replace µC internal timers in battery-constrained IoT edge devices by offloading wake-up scheduling to a dedicated, ultra-low-leakage silicon block.
FAQ
What is the minimum external resistor value supported by the TPL5111DDCR for time interval configuration?
The TPL5111DDCR requires an external resistor (REXT) between 500 Ω and 170 kΩ connected from DELAY/M_DRV to GND. At 500 Ω, the device configures to its shortest interval of 100 ms. Using resistors below 500 Ω may cause incorrect time interval reading or POR failure. The TPL5111DDCR datasheet specifies 1% tolerance as recommended for accuracy, and parallel combinations (e.g., 1.0 kΩ // 1.0 kΩ) are valid for achieving non-standard values. Always verify REXT tolerance impact using Equation 3 from the TPL5111DDCR datasheet.
Can the TPL5111DDCR operate reliably at 1.8 V supply voltage?
Yes, the TPL5111DDCR is fully specified for operation from 1.8 V to 5.5 V. At 1.8 V, its typical supply current remains 35 nA, and timing accuracy degrades only by ±25 ppm/V - resulting in <±0.1% additional error over full range. Oscillator stability is maintained at ±100 ppm/°C across –40°C to +105°C. The TPL5111DDCR's VIH/VIL thresholds scale with VDD, ensuring compatibility with 1.8 V GPIOs. This makes the TPL5111DDCR suitable for direct integration with 1.8 V microcontrollers and energy-harvesting sources.
How does the DONE signal affect the DRVn output pulse width in the TPL5111DDCR?
The DONE signal shortens the TPL5111DDCR's DRVn pulse width when received before tIP − 50 ms. Specifically, upon detecting a valid rising edge on DONE (≥100 ns, VIH = 0.7×VDD), the TPL5111DDCR immediately drives DRVn LOW. If DONE arrives later than tIP − 50 ms, DRVn stays HIGH for the full programmed interval minus 50 ms, then goes LOW for the final 50 ms before the next cycle. No DONE signal results in DRVn remaining HIGH for tIP − 50 ms, then LOW for 50 ms. This handshake prevents unnecessary power-on duration and is fundamental to the TPL5111DDCR's role in optimizing µC runtime efficiency.
Is the TPL5111DDCR pin-compatible with other members of the TPL51xx family?
No, the TPL5111DDCR is not pin-compatible with other TPL51xx variants such as TPL5010 or TPL5120. While all share the SOT-23-6 (DDC) package footprint, pin functions differ significantly: TPL5010 lacks DONE and EN/ONE_SHOT pins (uses different control scheme), and TPL5120 includes additional features like programmable timeout extension and different pin assignments. The TPL5111DDCR's pinout - VDD, GND, DELAY/M_DRV, DONE, DRVn, EN/ONE_SHOT - is unique to this part. Substituting other TPL51xx devices requires PCB layout revision and firmware adaptation.
What is the maximum capacitive load the TPL5111DDCR DRVn pin can drive?
According to the TPL5111DDCR datasheet, the DRVn pin is characterized for rise/fall times of 50 ns with a 50 pF capacitive load. Driving loads exceeding 50 pF may increase transition times, potentially causing timing violations in downstream enable circuits. For loads >50 pF (e.g., long PCB traces or high-input-capacitance LDOs), a series resistor (10–100 Ω) should be added near the DRVn pin to damp ringing and maintain clean edges. The TPL5111DDCR's VOH specification (VDD − 0.3 V @ 100 µA) confirms it can source sufficient current for typical enable inputs, but excessive capacitance risks false triggering or delayed turn-on of the powered subsystem.
TPL5111DDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Programmable Timer
- Count:
- -
- Frequency:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Current - Supply:
- 35 nA
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- SOT-23-THIN
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TPL5111DDCR FAQ
1.How can I place an order for TPL5111DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPL5111DDCR 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 TPL5111DDCR reliable?
The price and inventory of TPL5111DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPL5111DDCR is usually 5 days.
3.What payment methods are accepted for TPL5111DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPL5111DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPL5111DDCR?
TPL5111DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPL5111DDCR 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 TPL5111DDCR?
For technical support, including TPL5111DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPL5111DDCR requirements.
6.How does Aetrix verify that TPL5111DDCR is sourced from the original manufacturer or authorized distributors?
All TPL5111DDCR 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 TPL5111DDCR meets industry standards.
7.What is the process for return or replacement of TPL5111DDCR?
All TPL5111DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPL5111DDCR, 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 TPL5111DDCR part is unused and in its original packaging.
Return procedure for TPL5111DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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