My Inquiry
My Account
Texas Instruments TPS77701D
- Part No.:
- TPS77701D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS77701D.pdf
- Description:
- IC REG LIN POS ADJ 750MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:192
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS77701D from Texas Instruments is an adjustable 750-mA low-dropout (LDO) voltage regulator with open-drain power-on reset output, 85 µA typical quiescent current, 260 mV typical dropout at 750 mA, and ±2% output voltage accuracy over line/load/temperature. It operates from −40°C to 125°C and is used in battery-powered microcontroller systems requiring precise, low-power regulation and reliable reset signaling.
For engineers reviewing the TPS77701D datasheet, TPS77701D pinout, TPS77701D application, or TPS77701D equivalent, key selection considerations include its adjustable output range (1.5 V to 5.5 V), SOIC-8 package thermal performance, 200-ms RESET delay timing, PMOS pass element architecture, and compatibility with 10-µF low-ESR output capacitors.
Technical Context
The TPS77701D implements a PMOS pass transistor architecture that delivers ultralow, load-independent quiescent current (85 µA typ) and linearly proportional dropout voltage-260 mV at 750 mA for 3.3-V nominal output. Its internal 1.1834-V reference feeds a high-impedance feedback amplifier via the FB pin, enabling precise external resistor-divider programming.
It integrates a dedicated open-drain RESET comparator monitoring regulated output voltage with 92–98% VO trip threshold, 0.5% VO hysteresis, and fixed 200-ms assertion delay. The EN pin supports TTL-compatible shutdown, reducing quiescent current to 1 µA at TJ = 25°C, while thermal shutdown activates at 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 750 mA maximum continuous; supports high-current portable loads without external boost circuitry. |
| Dropout Voltage | 260 mV typical at 750 mA; enables regulation from inputs as low as VO + 0.26 V, extending battery runtime. |
| Quiescent Current | 85 µA typical over full load range (0–750 mA); ensures minimal standby drain in always-on systems. |
| Output Accuracy | ±2% over line, load, and temperature (−40°C to 125°C); guarantees stable MCU core voltage under dynamic conditions. |
| RESET Delay | 200 ms fixed timeout; provides clean, glitch-free system initialization after power ramp-up. |
| Input Voltage Range | 2.7 V to 10 V; accommodates single-cell Li-ion (3.0–4.2 V), dual-cell alkaline (2.4–3.2 V), and intermediate supply rails. |
| Thermal Shutdown | 150°C activation; protects device during overload or poor PCB heatsinking without latch-up. |
Pinout & Package
TPS77701D is housed in an 8-pin SOIC (D) package with exposed pad not connected internally. Pin functions are validated per TI SLVS230G datasheet Section 4 (SOIC Package Terminal Functions).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Regulator ground reference | Primary return path for output current and internal bias; must be low-impedance connection to system ground plane. |
| EN (Pin 2) | Enable input | TTL-compatible control: logic low disables regulator (1 µA standby), logic high ≥1.7 V enables operation. |
| IN (Pins 3, 4) | Input voltage supply | Dual pins reduce trace resistance and improve current handling; connect both to same input rail with short, wide traces. |
| OUT (Pins 5, 6) | Regulated output | Dual pins lower output impedance and improve transient response; connect directly to load and output capacitor. |
| FB/NC (Pin 7) | Feedback input / No-connect | For TPS77701D: connects to external resistor divider to set output voltage; unused on fixed-output variants. |
| RESET (Pin 8) | Open-drain reset output | Asserts low when VO drops below 92–98% of nominal; requires external pullup resistor to VI or VO. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Element | Delivers load-independent quiescent current and avoids PNP saturation issues during dropout, ensuring predictable startup and battery longevity. |
| Adjustable Output (1.5–5.5 V) | Programmed via external R1/R2 divider referenced to 1.1834 V internal bandgap; supports custom voltage rails without redesigning BOM. |
| 200-ms RESET Timer | Monitors regulated output with hysteresis and fixed delay; eliminates need for external RC reset IC in space-constrained designs. |
| Stable with 10-µF Low-ESR Cap | Guaranteed stability using cost-effective 10-µF ceramic or tantalum output capacitors (ESR 50 mΩ–1.5 Ω), simplifying layout and BOM. |
| Thermal + Current Protection | Combines foldback current limiting (~1.7 A peak) and 150°C thermal shutdown to prevent damage during fault conditions without external components. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose monitors and pulse oximeters requiring long shelf life and reliable cold-start behavior. IC Role / Device Role / Timing Role: Primary LDO supplying 3.3 V to MCU and analog front-end; RESET asserts at power-on to initialize ADC calibration sequence. Use Value: 85 µA quiescent current extends 2-year battery life; 200-ms RESET ensures deterministic firmware boot before sensor sampling begins. | Use Scenario: DIN-rail mounted programmable logic controllers with isolated 24-V DC input powering 5-V and 3.3-V logic domains. IC Role / Device Role / Timing Role: Secondary LDO generating 3.3 V for FPGA configuration and communication interfaces; RESET signals undervoltage to main controller. Use Value: 260-mV dropout allows operation down to 3.56 V input, maintaining regulation during brownouts; ±2% accuracy prevents false watchdog timeouts. |
| Automotive Body Control Units | Wireless IoT Edge Nodes |
Use Scenario: Door module ECUs powered from vehicle battery (9–16 V) with strict EMC and thermal constraints in confined enclosures. IC Role / Device Role / Timing Role: Adjustable LDO set to 5.0 V for CAN transceiver and LIN interface; RESET monitors output to trigger safe state entry on supply sag. Use Value: SOIC-8 package meets automotive thermal derating requirements (568 mW @ TA < 25°C); PMOS architecture avoids current spikes during cold-crank events. | Use Scenario: LoRaWAN sensor nodes operating on coin-cell batteries with multi-year duty cycles and infrequent wake-ups. IC Role / Device Role / Timing Role: Single LDO delivering 1.8 V to ultra-low-power MCU and RF SoC; EN pin controlled by RTC to minimize sleep current. Use Value: 1 µA shutdown current enables >10-year battery life; 10-µF capacitor stability eliminates need for bulky electrolytics in compact modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700DRBT | Lower noise (4.7 µVrms), higher PSRR (70 dB @ 1 kHz), but 1-A max output and 6-pin WSON package. | Better suited for precision analog signal chains; lacks integrated RESET output. | Select when low-noise biasing is critical and external reset logic is acceptable. |
| MCP1826T-ADJE/DC | Fixed 1.2-V to 5.0-V range, 1-A output, 250-mV dropout, but no RESET function and only 1% initial accuracy. | Cost-optimized for high-volume consumer devices; requires external reset IC for system initialization. | Select for price-sensitive designs where RESET is implemented separately and tighter initial tolerance is not required. |
Compared with TPS77701D, TPS7A4700DRBT offers superior noise/PSRR but omits RESET and uses a smaller thermal package, while MCP1826T-ADJE/DC trades RESET integration and ±2% accuracy for lower unit cost and higher output current-making TPS77701D optimal for space-constrained, reset-critical embedded systems needing guaranteed accuracy and thermal robustness.
Availability
TPS77701D is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and wireless IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS77701D 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 leader specializing in analog, embedded processing, and connectivity technologies with decades of LDO design expertise.
The TPS777xx family was engineered for battery-powered and thermally constrained applications demanding low quiescent current, precise reset timing, and robust dropout performance-targeting portable instrumentation, industrial controls, and automotive subsystems.
FAQ
What output voltage range does the TPS77701D support?
The TPS77701D supports an adjustable output voltage range from 1.5 V to 5.5 V, set externally using a resistor divider connected to the FB pin. This range is confirmed in the "Recommended Operating Conditions" table (Section 6) and "Electrical Characteristics" (Section 7) of the SLVS230G datasheet, where VO min/max values are explicitly specified for TPS77701 across the full temperature range.
Does the TPS77701D include a power-good (PG) or reset (RESET) function?
The TPS77701D includes an open-drain RESET output-not PG. As stated in the device description and functional block diagram (Section 3), TPS777xx variants feature RESET with 200-ms delay and 92–98% VO trip threshold, while TPS778xx variants provide PG. Pin 8 is labeled RESET in the SOIC terminal table (Section 4), confirming its role in undervoltage detection for microcontroller reset sequencing.
What is the maximum dropout voltage specification for the TPS77701D at full load?
The TPS77701D exhibits a typical dropout voltage of 260 mV at 750 mA output current and 25°C junction temperature, with a maximum of 427 mV under worst-case conditions (Section 7, "Electrical Characteristics"). This value applies when configured for 3.3 V output; actual dropout scales linearly with output voltage per the PMOS architecture described in Section 2.
Can the TPS77701D operate without an external load?
Yes, the TPS77701D is stable at zero load. Section 15 ("Application Information") explicitly states: "The TPS777xx and TPS778xx families are stable even at zero load; no minimum load is required for operation." This eliminates the need for dummy loads in standby or intermittent-use applications.
What package type and thermal rating does the TPS77701D use?
The TPS77701D uses an 8-pin SOIC (D) package with a power dissipation rating of 568 mW at TA < 25°C and 0 CFM airflow, derating at 5.68 mW/°C above 25°C (Dissipation Rating Table 1, Section 6). Its MSL rating is Level-1-260°C-UNLIM, and it operates from −40°C to 125°C junction temperature.
TPS77701D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 750mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable, Power Good, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS77701D FAQ
1.How can I place an order for TPS77701D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS77701D 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 TPS77701D reliable?
The price and inventory of TPS77701D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS77701D is usually 5 days.
3.What payment methods are accepted for TPS77701D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS77701D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS77701D?
TPS77701D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS77701D 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 TPS77701D?
For technical support, including TPS77701D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS77701D requirements.
6.How does Aetrix verify that TPS77701D is sourced from the original manufacturer or authorized distributors?
All TPS77701D 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 TPS77701D meets industry standards.
7.What is the process for return or replacement of TPS77701D?
All TPS77701D units undergo pre-shipment inspection (PSI). If there is an issue with TPS77701D, 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 TPS77701D part is unused and in its original packaging.
Return procedure for TPS77701D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS77701D Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
