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Texas Instruments TPS77601PWPRG4
- Part No.:
- TPS77601PWPRG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS77601PWPRG4.pdf
- Description:
- IC REG LIN POS ADJ 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,137
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Product details
Overview
TPS77601PWPRG4 from Texas Instruments is an adjustable 500mA low-dropout (LDO) voltage regulator with power-good (PG) output, PMOS pass element, 169mV typical dropout at 500mA, ±2% output voltage accuracy over line/load/temperature, and 85µA typical quiescent current. It operates from 2.7V to 10V input and delivers 1.2V–5.5V output, used in FPGA core/I/O power and DSP supply rails.
For engineers reviewing the TPS77601PWPRG4 datasheet, TPS77601PWPRG4 pinout, TPS77601PWPRG4 application, or TPS77601PWPRG4 equivalent, key selection criteria include PG output timing behavior, 10µF low-ESR capacitor stability requirement, thermal shutdown threshold at +150°C, and compatibility with SOIC-8 and HTSSOP-20 PowerPAD™ packages.
Technical Context
The TPS77601PWPRG4 uses a PMOS pass transistor enabling ultralow, load-independent quiescent current (85µA typ) and dropout voltage directly proportional to output current. Its internal 1.183V reference feeds a high-impedance feedback amplifier for precise output regulation via external resistor divider on FB pin.
It integrates open-drain power-good (PG) monitoring with 92–98% VOUT trip threshold, 0.5% hysteresis, and active-high assertion-distinct from TPS775xx's RESET output. The device requires no minimum load, supports zero-load operation, and achieves fast transient response with 10µF low-ESR output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 500mA continuous; internally limited to ~1.7A during overload-enables robust short-circuit protection without external current sensing. |
| Dropout Voltage | 169mV typical at 500mA (TPS77633); enables regulation with minimal VIN–VOUT headroom-critical for battery-powered systems near end-of-life. |
| Quiescent Current | 85µA typical over full 0–500mA load range; remains constant due to voltage-driven PMOS gate-extends battery life in always-on applications. |
| Output Accuracy | ±2% over line, load, and temperature (–40°C to +125°C); ensures reliable logic-level compliance for FPGA/DSP I/O domains. |
| Power-Good Threshold | 92–98% of nominal VOUT with 0.5% hysteresis; provides clean, glitch-free system reset signaling without external comparators. |
| Enable Input Logic | TTL-compatible EN pin: VIH ≥1.7V, VIL ≤0.9V; allows direct interfacing with 3.3V/5V microcontrollers without level-shifting. |
| Thermal Shutdown | Activates at TJ ≈ +150°C; auto-recovery at ~+130°C-prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
TPS77601PWPRG4 is packaged in 20-pin HTSSOP (PWP) with exposed thermal pad (PowerPAD™), rated for –40°C to +125°C junction temperature. The package requires soldering the thermal pad to a ground plane for optimal thermal performance per TI SLMA002 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND / HSINK (Pins 1,2,9,10,11,12,19,20) | Ground reference and thermal sink | Multiple GND pins reduce impedance; thermal pad must be connected to PCB ground plane for 34.6mW/°C derating and 5790mW max dissipation at TA=25°C. |
| EN (Pin 5) | Enable control input | Negative-polarity enable: logic high disables regulator, reducing IQ to 1µA; TTL-compatible thresholds simplify host MCU interface. |
| IN (Pins 6,7) | Input voltage supply | Dual IN pins lower series resistance and improve current sharing; accepts 2.7V–10V input with ESD rating up to ±2kV HBM. |
| FB/NC (Pin 15) | Feedback input (adjustable mode) | High-impedance node (2nA max bias) for external resistor divider; sets output from 1.2V–5.5V; NC on fixed-output variants. |
| OUT (Pins 13,14) | Regulated output voltage | Dual OUT pins reduce trace resistance and improve load transient response; requires 10µF low-ESR capacitor (50mΩ–1.5Ω) for stability. |
| RESET/PG (Pin 16) | Open-drain power-good indicator | Active-high PG output asserts when VOUT ≥92% nominal; requires external pullup; used for power-on sequencing and brownout detection. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Element | Enables ultralow, load-independent quiescent current (85µA) and linear dropout vs. load-eliminates startup surge and extends battery runtime. |
| Stable with 10µF Low-ESR Cap | Reduces BOM cost and board space vs. traditional LDOs requiring larger or multiple capacitors; supports solid tantalum, ceramic, and aluminum electrolytic types. |
| Integrated Power-Good (PG) | Replaces discrete supervisor ICs in FPGA/DSP power sequencing; eliminates external comparator, reference, and hysteresis components. |
| No Minimum Load Requirement | Enables use in ultra-low-power sleep modes (e.g., sensor nodes) without dummy loads-reduces system power waste and design complexity. |
| Thermal & Current Protection | Combines foldback current limiting (~1.7A) and thermal shutdown (+150°C) to prevent failure under fault conditions-no external protection circuitry needed. |
Applications
| FPGA Core Power | DSP I/O Supply |
|---|---|
Use Scenario: Powers 1.2V–1.8V FPGA core logic banks requiring tight voltage tolerance and fast load transients during configuration. IC Role / Device Role / Timing Role: Primary core LDO regulator with PG output synchronized to configuration completion. Use Value: ±2% accuracy ensures reliable bitstream loading; 169mV dropout preserves headroom during battery sag; PG confirms stable rail before releasing FPGA reset. |
Use Scenario: Supplies 3.3V I/O banks of multi-core DSPs handling high-speed serial interfaces (e.g., McBSP, EMIF). IC Role / Device Role / Timing Role: Dedicated I/O LDO with independent PG monitoring for interface readiness signaling. Use Value: Fast transient response (<100µs recovery) maintains signal integrity during burst data transfers; PG enables safe interface initialization after power ramp. |
| Battery-Powered Instrumentation | Industrial PLC I/O Modules |
Use Scenario: Regulates microcontroller and analog front-end (AFE) supplies in handheld test equipment operating from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Main system LDO with PG used as low-battery warning and graceful shutdown trigger. Use Value: 85µA quiescent current extends standby time >1 year; 92–98% PG threshold provides accurate remaining capacity indication before cutoff. |
Use Scenario: Provides isolated 2.5V/3.3V rails for digital I/O conditioning circuits in DIN-rail mounted PLC modules with wide ambient temperature range. IC Role / Device Role / Timing Role: Industrial-grade LDO with thermal shutdown protecting against enclosure overheating during extended operation. Use Value: –40°C to +125°C operating range and 150°C thermal shutdown ensure reliability in unventilated enclosures; PG validates rail stability before enabling field I/O drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS77601PWPR | Same silicon, identical electrical specs; RoHS-compliant NiPdAu lead finish vs. G4's matte tin (Sn). | No functional difference; G4 suffix indicates legacy tin plating-both meet same JEDEC MSL-2 reflow profile. | Select TPS77601PWPRG4 only if legacy tin finish is required for solderability compatibility with specific flux chemistries. |
| TPS7A4700RGWR | Lower noise (4.7µVRMS), higher PSRR (70dB @1kHz), but 200mA output and higher IQ (1mA); 20-pin QFN package. | Better for precision analog rails (e.g., ADC reference), not suitable for 500mA FPGA core loads. | Choose TPS7A4700RGWR only for noise-sensitive analog subsystems-not as a drop-in replacement for TPS77601PWPRG4's 500mA digital rail role. |
Compared with TPS77601PWPR and TPS7A4700RGWR, the TPS77601PWPRG4 uniquely balances 500mA output, ultralow IQ, integrated PG, and proven industrial thermal robustness in HTSSOP PowerPAD™-making it optimal for cost-sensitive, high-current digital power domains where noise is secondary to efficiency and sequencing control.
Availability
TPS77601PWPRG4 is available at Aetrix Electronics and suitable for FPGA power, DSP I/O supply, and battery-powered instrumentation requiring stable component supply across long production lifecycles.
Supply support for TPS77601PWPRG4 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 power management technologies, with decades of LDO innovation focused on efficiency, integration, and reliability.
The TPS776xx family was designed specifically for high-current, low-noise digital power rails in FPGAs, DSPs, and microprocessors-emphasizing fast transient response, ultralow quiescent current, and integrated power-good monitoring.
FAQ
What is the function of the FB pin on the TPS77601PWPRG4?
The FB pin on the TPS77601PWPRG4 is the feedback input for the adjustable-output configuration, connecting to an external resistor divider to set the output voltage between 1.2V and 5.5V. It features high input impedance (≤2nA bias current) and must be routed away from noise sources to avoid regulation errors. In fixed-output variants, this pin is not connected internally.
Does the TPS77601PWPRG4 require a minimum load current to maintain regulation?
No, the TPS77601PWPRG4 is stable at zero load and does not require a minimum load current. This capability simplifies designs for ultra-low-power sleep modes and eliminates the need for dummy resistive loads-reducing power waste and board space while maintaining ±2% output accuracy across the full 0–500mA range.
How does the power-good (PG) output of the TPS77601PWPRG4 behave during startup and brownout?
The PG output of the TPS77601PWPRG4 is an open-drain, active-high signal that asserts only when VOUT reaches and sustains ≥92% of its nominal value. During startup, PG remains low until regulation is established; during brownout, it deasserts when VOUT falls below 98% (with 0.5% hysteresis), providing clean, bounce-free sequencing without external timers.
What thermal considerations apply to the TPS77601PWPRG4 in HTSSOP-20 (PWP) package?
The TPS77601PWPRG4 in HTSSOP-20 requires the exposed thermal pad to be soldered to a PCB ground plane per TI SLMA002 guidelines. With high-K board layout, it achieves 57.9mW/°C derating and 5790mW max dissipation at 25°C ambient-critical for sustaining 500mA output in enclosed industrial environments without forced airflow.
Can the TPS77601PWPRG4 be used with ceramic output capacitors?
Yes, the TPS77601PWPRG4 is stable with multilayer ceramic capacitors (MLCCs) provided they meet the 10µF minimum capacitance and 50mΩ–1.5Ω ESR range. MLCCs are preferred for low-profile designs and improved transient response, but require careful selection to avoid excessive ESR drift over temperature and DC bias.
TPS77601PWPRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS77601PWPRG4 FAQ
1.How can I place an order for TPS77601PWPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS77601PWPRG4 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 TPS77601PWPRG4 reliable?
The price and inventory of TPS77601PWPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS77601PWPRG4 is usually 5 days.
3.What payment methods are accepted for TPS77601PWPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS77601PWPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS77601PWPRG4?
TPS77601PWPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS77601PWPRG4 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 TPS77601PWPRG4?
For technical support, including TPS77601PWPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS77601PWPRG4 requirements.
6.How does Aetrix verify that TPS77601PWPRG4 is sourced from the original manufacturer or authorized distributors?
All TPS77601PWPRG4 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 TPS77601PWPRG4 meets industry standards.
7.What is the process for return or replacement of TPS77601PWPRG4?
All TPS77601PWPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS77601PWPRG4, 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 TPS77601PWPRG4 part is unused and in its original packaging.
Return procedure for TPS77601PWPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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