My Inquiry
My Account
Texas Instruments TPS3779ADRYT
- Part No.:
- TPS3779ADRYT
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-UFDFN
- Datasheet:
-
TPS3779ADRYT.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:177
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3779ADRYT from Texas Instruments is a dual-channel, low-power, high-accuracy voltage detector in a 1.45 mm × 1.00 mm µSON-6 package. It monitors two independent supply rails with adjustable thresholds down to 1.2 V, ±1% VIT+ accuracy over –40°C to 125°C, and 2 µA typical quiescent current-enabling precise power-rail supervision in battery-powered microcontroller systems.
For engineers reviewing the TPS3779ADRYT datasheet, TPS3779ADRYT pinout, TPS3779ADRYT application, or TPS3779ADRYT equivalent, this page delivers verified electrical specifications, validated push-pull output behavior, confirmed temperature-stable threshold deviation (±0.4% max), and real-world dual-rail monitoring use cases without extrapolation.
Technical Context
The TPS3779ADRYT implements two independent comparators with factory-trimmed hysteresis (1% for 'D' variant), each featuring rising/falling thresholds (VIT+, VIT–) referenced to an internal bandgap. Its push-pull outputs drive high to VDD and low to GND without external pull-ups, supporting direct interface to 1.5–6.5 V logic domains.
Threshold detection is enabled across full VDD range (1.5 V–6.5 V) and operates with <10 nA input bias current on SENSE1/SENSE2, allowing high-impedance resistor dividers. Startup delay is fixed at 570 µs after VDD crosses VDD(min), and propagation delays are 5.5 µs (rising) and 10 µs (falling).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 1.5 V to 6.5 V - supports direct connection to common logic and analog supply rails without level-shifting. |
| Quiescent Current | 2 µA (typ) at TJ = 25°C - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| VIT+ Accuracy | ±1% over –40°C to 125°C - ensures reliable reset assertion across automotive under-hood and industrial control environments. |
| Hysteresis | 1% (TPS3779D variant) - rejects noise up to 12 mV on a 1.2 V rail without false triggering. |
| Output Type | Push-pull (OUT1, OUT2) - eliminates need for external pull-up resistors, reducing BOM count and PCB area. |
| Propagation Delay | tPD(r) = 5.5 µs, tPD(f) = 10 µs - provides deterministic timing for synchronous reset sequencing in FPGA/CPU power-up. |
| Startup Delay | 570 µs after VDD > VDD(min) - guarantees stable internal reference before enabling output assertion. |
Pinout & Package
TPS3779ADRYT is housed in a 1.45 mm × 1.00 mm, 6-pin µSON package with wettable flanks, optimized for automated optical inspection and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SENSE1 | Input for Channel 1 detection | High-impedance comparator input (≤15 nA bias); accepts 0–6.5 V regardless of VDD; sets OUT1 assertion point via external resistor divider. |
| 2 - GND | Ground reference | Analog and digital ground return path; must be low-inductance connection to minimize threshold error from ground bounce. |
| 3 - SENSE2 | Input for Channel 2 detection | Independent high-Z input identical to SENSE1; enables simultaneous monitoring of two distinct rails (e.g., core + I/O supplies). |
| 4 - OUT2 | Push-pull output for Channel 2 | Drives high to VDD or low to GND; sinks/source capability supports direct connection to MCU reset pins without pull-up. |
| 5 - OUT1 | Push-pull output for Channel 1 | Functionally identical to OUT2; allows independent reset signaling or wired-OR configuration with external diode if needed. |
| 6 - VDD | Supply input | Powers internal reference and comparators; requires 0.1 µF ceramic capacitor placed adjacent to pin per analog best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detection channels | Enables concurrent monitoring of two voltage rails (e.g., 3.3 V I/O and 1.8 V core) with separate outputs-no shared timing or dependency. |
| Adjustable threshold down to 1.2 V | Configured via external resistor divider on SENSE pins; supports precision supervision of modern low-voltage processors and FPGAs. |
| 1% factory-set hysteresis | Guarantees noise immunity without design-time calculation; eliminates need for external hysteresis components or layout tuning. |
| –40°C to 125°C operating range | Validated performance across full industrial and extended automotive temperature ranges-no derating required. |
| Low 2 µA quiescent current | Minimizes standby power draw in always-on systems such as smart meters and remote sensors-extends battery life by years. |
Applications
| Power-Supply Sequencing | Microcontroller Reset Supervision |
|---|---|
Use Scenario: Coordinating startup order of multiple DC/DC converters in a multi-rail system (e.g., FPGA SoM with 12 V, 5 V, 3.3 V, and 1.2 V supplies). IC Role / Device Role / Timing Role: TPS3779ADRYT monitors intermediate rails and asserts OUT1/OUT2 to enable downstream regulators only after upstream rails stabilize. Use Value: Prevents latch-up and brownout during power-up by enforcing strict sequencing-eliminates need for discrete timers or CPLD-based sequencers. | Use Scenario: Ensuring clean reset assertion for ARM Cortex-M4 microcontrollers in portable medical devices. IC Role / Device Role / Timing Role: TPS3779ADRYT's OUT1 supervises the main 3.3 V supply while OUT2 monitors a backup 1.8 V LDO; both outputs feed into the MCU's dual-reset-input logic. Use Value: Guarantees CPU enters known state even during partial rail collapse-meets IEC 62304 Class C safety requirements for diagnostic firmware execution. |
| Early Warning Detection | Battery Voltage Monitoring |
Use Scenario: Providing advance alert before critical undervoltage shutdown in solid-state drives using 3.3 V and 1.2 V rails. IC Role / Device Role / Timing Role: TPS3779ADRYT configures SENSE1 for nominal 3.3 V (VIT+ = 3.1 V) and SENSE2 for early-warning 1.2 V (VIT+ = 1.15 V), generating staggered alerts. Use Value: Enables host controller to flush caches and enter safe state 10–15 ms before hard reset-prevents data corruption during sudden power loss. | Use Scenario: Monitoring lithium-polymer cell voltage (2.7–4.2 V) and system 3.3 V rail in handheld test equipment. IC Role / Device Role / Timing Role: TPS3779ADRYT uses SENSE1 to detect battery UV (2.8 V) and SENSE2 to verify regulated 3.3 V; OUT1 triggers low-battery LED, OUT2 holds MCU in reset. Use Value: Delivers accurate, temperature-compensated battery warning without ADC overhead-reduces firmware complexity and extends runtime via ultra-low IDD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3779BDRT | 5% hysteresis (vs. 1%); same µSON-6 package, push-pull outputs, and 2 µA IDD. | Suitable where higher noise margin is prioritized over tight threshold tolerance-e.g., noisy industrial motor-control boards. | Select when system noise exceeds ±6 mV on a 1.2 V rail and 1% accuracy is unnecessary. |
| TPS3780DDCKR | Open-drain outputs (vs. push-pull); identical 1% hysteresis, VDD range, and accuracy. | Required when outputs must be pulled to a voltage different from VDD (e.g., 5 V reset signal from 3.3 V supply). | Choose only if interfacing to mixed-voltage logic families or implementing wired-AND reset buses. |
Compared with TPS3779BDRT and TPS3780DDCKR, the TPS3779ADRYT uniquely balances 1% threshold precision, zero external component requirement (push-pull), and µSON footprint-making it optimal for space-constrained, low-noise embedded designs where reset timing determinism is critical.
Availability
TPS3779ADRYT is available at Aetrix Electronics and suitable for DSP, microcontroller, and solid-state drive applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS3779ADRYT 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and power management solutions.
The TPS37xx family was designed specifically for high-accuracy, low-quiescent-current dual-rail voltage monitoring in portable, industrial, and automotive systems-emphasizing small size, wide temperature operation, and configurable detection thresholds.
FAQ
What is the output configuration of the TPS3779ADRYT?
The TPS3779ADRYT features two push-pull outputs (OUT1 and OUT2). Each output actively drives high to VDD and low to GND without requiring external pull-up resistors. This configuration simplifies PCB layout, reduces component count, and ensures fast, rail-to-rail logic transitions compatible with standard CMOS inputs across its 1.5–6.5 V VDD range. The TPS3779ADRYT does not support open-drain operation.
What hysteresis value is implemented in the TPS3779ADRYT?
The TPS3779ADRYT implements a factory-set 1% hysteresis (designated by the 'D' suffix), meaning VHYS = 1% × VIT+. This is confirmed in TI's SBVS250 datasheet Device Comparison Table and Electrical Characteristics section. The hysteresis is trimmed during production and remains stable across –40°C to 125°C, providing consistent noise rejection without external components.
Can the TPS3779ADRYT monitor voltages higher than its VDD supply?
Yes, the TPS3779ADRYT SENSE1 and SENSE2 inputs accept voltages from 0 V to 6.5 V independently of VDD, which can range from 1.5 V to 6.5 V. This allows direct monitoring of higher-voltage rails (e.g., 5 V or 3.3 V) while powering the device from a lower 1.8 V supply-enabling flexible power-domain partitioning and reducing overall system power consumption.
What is the minimum detectable voltage threshold for the TPS3779ADRYT?
The TPS3779ADRYT supports adjustable detection thresholds down to 1.2 V using external resistor dividers on SENSE1 and SENSE2. The internal VIT+ reference is 1.182 V (for the 1% hysteresis variant), and the minimum externally set threshold is determined by resistor ratio-not by absolute input voltage limits. Input pins tolerate up to 6.5 V, enabling supervision of sub-1.2 V rails via scaling.
How does the TPS3779ADRYT behave during power-up?
Upon power-up, the TPS3779ADRYT enforces a 570 µs startup delay after VDD crosses VDD(min) before outputs respond to SENSE inputs. During this period, outputs remain in a defined inactive state. This delay ensures internal references and comparators stabilize, preventing false resets. The device also includes a 0.8 V power-on reset (POR) threshold below which outputs are undefined-guaranteeing clean initialization.
TPS3779ADRYT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SON (1.45x1)
TPS3779ADRYT FAQ
1.How can I place an order for TPS3779ADRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3779ADRYT 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 TPS3779ADRYT reliable?
The price and inventory of TPS3779ADRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3779ADRYT is usually 5 days.
3.What payment methods are accepted for TPS3779ADRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3779ADRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3779ADRYT?
TPS3779ADRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3779ADRYT 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 TPS3779ADRYT?
For technical support, including TPS3779ADRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3779ADRYT requirements.
6.How does Aetrix verify that TPS3779ADRYT is sourced from the original manufacturer or authorized distributors?
All TPS3779ADRYT 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 TPS3779ADRYT meets industry standards.
7.What is the process for return or replacement of TPS3779ADRYT?
All TPS3779ADRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3779ADRYT, 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 TPS3779ADRYT part is unused and in its original packaging.
Return procedure for TPS3779ADRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3779ADRYT Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
