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Texas Instruments TPS77250DGKRG4
- Part No.:
- TPS77250DGKRG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS77250DGKRG4.pdf
- Description:
- IC REG LINEAR 5V 150MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,098
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Product details
Overview
TPS77250DGKRG4 from Texas Instruments is a 5.0-V fixed-output, 150-mA low-dropout (LDO) voltage regulator with integrated open-drain power-good (PG) output, housed in an 8-pin MSOP (DGK) package. It delivers stable regulation with 2% output tolerance over line/load/temperature, 115 mV dropout at 150 mA, and ultralow 92 µA quiescent current - enabling long battery life in portable instrumentation and microcontroller power rails.
For engineers reviewing the TPS77250DGKRG4 datasheet, TPS77250DGKRG4 pinout, TPS77250DGKRG4 application, or TPS77250DGKRG4 equivalent, key selection criteria include its PG status monitoring capability, compatibility with low-ESR ceramic (10 µF) or tantalum (1 µF) output capacitors, fast transient response, thermal shutdown protection, and operation across –40°C to 125°C junction temperature.
Technical Context
The TPS77250DGKRG4 uses a PMOS pass element to achieve low dropout voltage directly proportional to load current and near-constant 92 µA quiescent current independent of output loading. Its internal comparator monitors regulated output voltage and asserts the open-drain PG pin high-impedance when VOUT ≥ 82% of 5.0 V (i.e., ≥4.1 V), and low-impedance when VOUT falls below that threshold.
It supports enable-controlled sleep mode (EN = high reduces quiescent current to <1 µA), operates with input voltages from 2.7 V to 10 V, and maintains stability with output capacitors as low as 1 µF (if ESR meets specified limits) or 10 µF low-ESR ceramics - eliminating need for external noise-filtering components despite 55 µVrms output noise performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% over line, load, and –40°C to 125°C temperature range - ensures reliable logic-level compliance for 5-V microcontrollers and analog circuitry. |
| Max Output Current | 150 mA continuous - sufficient for powering single-core MCUs, sensors, and interface ICs without thermal derating under typical PCB layouts. |
| Dropout Voltage | 115 mV at 150 mA (TJ = 25°C) - enables operation from 5.115 V input, preserving headroom in multi-rail systems with tight input margins. |
| Quiescent Current | 92 µA typical at full load, dropping to <1 µA in shutdown - extends battery runtime in always-on sensor nodes and low-power IoT endpoints. |
| Power-Good Threshold | PG asserts high-impedance when VOUT ≥ 4.1 V (82% of 5.0 V); asserts low-impedance below - provides precise undervoltage supervision for system reset sequencing. |
| Output Noise | 55 µVrms (300 Hz–100 kHz), no external bypass capacitor required - eliminates need for noise-filtering components in sensitive analog signal chains. |
| Enable Logic | Active-low EN pin; TTL-compatible - allows direct interfacing with microcontroller GPIOs for dynamic power management. |
Pinout & Package
TPS77250DGKRG4 is packaged in an 8-pin MSOP (DGK) surface-mount package measuring 3.0 mm × 3.0 mm × 1.0 mm, optimized for space-constrained PCB layouts and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FB/SENSE | Feedback/Sense input | Connected to VOUT for fixed-output versions; used with external resistor divider for adjustable variants - critical path for regulation accuracy and noise immunity. |
| 2 - PG | Power-good output | Open-drain, active-high status signal requiring external pullup - indicates valid 5.0-V rail for system initialization or fault detection. |
| 3 - EN | Enable input | Active-low logic control; high disables regulator and reduces IQ to <1 µA - enables software-controlled power gating. |
| 4 - GND | Regulator ground | Reference node for all internal circuitry and output sensing - must be connected to low-impedance system ground plane. |
| 5, 6 - IN | Input voltage supply | Dual pins reduce trace resistance and improve current handling - accepts 2.7 V to 10 V input with internal overvoltage protection. |
| 7, 8 - OUT | Regulated output | Dual pins lower output impedance and improve transient response - delivers 5.0 V ±2% to load with minimal droop during step-load changes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power-Good (PG) Output | Monitors 5.0-V output with 82% trip threshold and hysteresis - replaces discrete supervisor ICs in compact MCU power domains. |
| Ultralow Quiescent Current | 92 µA at full 150 mA load, <1 µA in shutdown - enables >1-year battery life in coin-cell-powered remote sensors. |
| Low-Noise Regulation | 55 µVrms output noise without external filter capacitor - simplifies BOM and layout for ADC reference supplies and RF bias rails. |
| Wide-Capacitor Compatibility | Stable with 1 µF tantalum (low-ESR) or 10 µF ceramic - supports cost-effective, small-footprint output filtering without oscillation risk. |
| Thermal Shutdown Protection | Activates at 144°C junction temperature - prevents damage during overload or poor heatsinking in sealed enclosures. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Powering low-power analog front-ends and BLE transceivers in handheld glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Primary 5-V LDO supplying ADC reference, op-amps, and microcontroller core - with PG confirming rail validity before data acquisition. Use Value: 92 µA quiescent current extends CR2032 battery life beyond 18 months; 55 µVrms noise avoids calibration drift in 16-bit medical ADCs. |
Use Scenario: Regulating 5-V logic supply for isolated digital I/O channels in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering clean 5-V to optocoupler drivers and level-shifters - with PG signaling power integrity to main controller. Use Value: 115 mV dropout enables operation from 5.115 V industrial bus; thermal shutdown protects against ambient +70°C cabinet overheating. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Providing regulated 5-V supply to LIN transceivers and door-lock actuators in 12-V automotive subsystems. IC Role / Device Role / Timing Role: Secondary LDO downstream of buck converter - PG output triggers fail-safe state machine upon undervoltage detection. Use Value: –40°C to 125°C operating range meets AEC-Q100 Grade 2 requirements; dual IN/OUT pins reduce IR drop in high-vibration environments. |
Use Scenario: Powering metrology ASICs and real-time clocks in Class 0.5 smart electricity meters with tamper detection. IC Role / Device Role / Timing Role: Precision 5-V reference source for energy measurement circuits - PG confirms stable supply before initiating billing-cycle sampling. Use Value: 2% output tolerance ensures consistent ADC gain calibration; fast transient response handles sudden load steps from RF communication bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76350DBVR | Same 5-V fixed output, 150-mA rating, but lacks PG output; higher 125 µA quiescent current; SOT-23-5 package. | No built-in power supervision - requires external supervisor IC for reset/PG functionality. | Select when PG is unnecessary and board space favors SOT-23 over MSOP. |
| MCP1703T-5002E/MB | 5-V fixed output, 250-mA rating, 4 µA quiescent current, but no PG output; SOT-23-5 package; 600 mV dropout at full load. | Ultra-low IQ suits energy-harvesting designs, but higher dropout limits use with low-input-voltage sources. | Select for ultra-low-power wake-on-event systems where PG is handled elsewhere and input voltage exceeds 5.6 V. |
Compared with TPS77250DGKRG4, TPS76350DBVR offers smaller footprint but omits PG monitoring, while MCP1703T-5002E/MB achieves dramatically lower quiescent current at the expense of higher dropout and no status output - making TPS77250DGKRG4 optimal for applications needing integrated rail supervision with balanced efficiency and size.
Availability
TPS77250DGKRG4 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TPS77250DGKRG4 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 expertise in precision power management ICs.
The TPS772xx family was designed specifically for space-constrained, battery-powered systems requiring accurate voltage regulation, low quiescent current, and integrated power-status signaling - targeting portable instrumentation, industrial automation, and automotive sub-systems.
FAQ
What is the function of the PG pin on the TPS77250DGKRG4?
The PG (Power-Good) pin on the TPS77250DGKRG4 is an open-drain, active-high output that signals when the regulated 5.0-V output is within specification. It transitions to high-impedance when VOUT reaches ≥82% of nominal (≥4.1 V) and to low-impedance if VOUT drops below that threshold. This enables system-level power sequencing and undervoltage fault detection without external components. The TPS77250DGKRG4 requires an external pullup resistor on the PG pin for proper operation.
Does the TPS77250DGKRG4 require an external bypass capacitor for noise reduction?
No, the TPS77250DGKRG4 does not require an external bypass capacitor to achieve its specified 55 µVrms output noise performance (measured from 300 Hz to 100 kHz). This low-noise capability is inherent to the device's design and eliminates the need for additional filtering components - reducing BOM cost and PCB area. However, a 10 µF low-ESR ceramic or 1 µF tantalum output capacitor is still required for loop stability per the datasheet recommendations.
What is the minimum input voltage required for the TPS77250DGKRG4 to regulate 5.0 V at 150 mA?
The minimum input voltage for the TPS77250DGKRG4 to maintain 5.0-V regulation at 150 mA is calculated as VOUT + VDO = 5.0 V + 115 mV = 5.115 V at TJ = 25°C. The datasheet specifies a recommended minimum input of 2.7 V or VOUT + 1 V (whichever is greater), so 6.0 V is the practical lower bound for robust operation across temperature and process variation. Input voltage must not exceed 10 V.
How does the enable (EN) pin affect quiescent current in the TPS77250DGKRG4?
The EN pin on the TPS77250DGKRG4 controls device enable state: when pulled low, the regulator operates normally with 92 µA typical quiescent current; when driven high (≥2 V), it enters shutdown mode with quiescent current reduced to <1 µA at TJ = 25°C (≤3 µA maximum). This feature enables dynamic power gating in battery-powered systems, significantly extending operational lifetime between charges or replacements. The TPS77250DGKRG4 supports direct connection to microcontroller GPIOs for software-controlled power management.
Can the TPS77250DGKRG4 be used with ceramic output capacitors?
Yes, the TPS77250DGKRG4 is explicitly designed to be stable with 10 µF low-ESR ceramic capacitors, as confirmed in the datasheet's stability regions (Figures 19 and 21). X5R and X7R dielectrics are recommended for their temperature stability; Y5U and Z5U types are discouraged due to large capacitance variation. The device also supports 1 µF tantalum capacitors if ESR falls within specified limits. Using compliant ceramics eliminates electrolytic bulk capacitance, improving reliability and reducing board area for the TPS77250DGKRG4.
TPS77250DGKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 50mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- 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:
- 8-VSSOP
TPS77250DGKRG4 FAQ
1.How can I place an order for TPS77250DGKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS77250DGKRG4 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 TPS77250DGKRG4 reliable?
The price and inventory of TPS77250DGKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS77250DGKRG4 is usually 5 days.
3.What payment methods are accepted for TPS77250DGKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS77250DGKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS77250DGKRG4?
TPS77250DGKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS77250DGKRG4 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 TPS77250DGKRG4?
For technical support, including TPS77250DGKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS77250DGKRG4 requirements.
6.How does Aetrix verify that TPS77250DGKRG4 is sourced from the original manufacturer or authorized distributors?
All TPS77250DGKRG4 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 TPS77250DGKRG4 meets industry standards.
7.What is the process for return or replacement of TPS77250DGKRG4?
All TPS77250DGKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS77250DGKRG4, 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 TPS77250DGKRG4 part is unused and in its original packaging.
Return procedure for TPS77250DGKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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