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Texas Instruments TPS71712DCKTG4
- Part No.:
- TPS71712DCKTG4
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS71712DCKTG4.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
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Product details
Overview
TPS71712DCKTG4 from Texas Instruments is a fixed-output, 1.2-V, 150-mA low-dropout linear regulator in SC-70-5 package, featuring 70 dB PSRR at 1 kHz, 170 mV dropout at full load, and 30 µVRMS output noise (100 Hz–100 kHz). It delivers stable power to noise-sensitive analog and RF circuits in space-constrained portable systems.
For engineers reviewing the TPS71712DCKTG4 datasheet, TPS71712DCKTG4 pinout, TPS71712DCKTG4 application, or TPS71712DCKTG4 equivalent, key selection criteria include ultra-low noise performance with 1-µF ceramic output capacitance, enable-controlled shutdown with <1.5 µA quiescent current, and compatibility with 0.01-µF noise-reduction capacitor for optimized spectral purity in camera sensor and Bluetooth® power rails.
Technical Context
The TPS71712DCKTG4 employs a PMOS pass device and high-gain BiCMOS error amplifier to achieve fast transient response and high PSRR across 100 Hz–1 MHz while maintaining only 45 µA ground current under no-load conditions. Its quick-start circuit charges the NR capacitor within 160 µs, enabling rapid power-up without compromising low-noise operation.
Fixed-output architecture integrates a precision 1.2-V bandgap reference and internal feedback network, eliminating external resistors. The NR pin bypasses reference noise and improves PSRR above 10 kHz; its high-impedance node requires low-leakage ceramic capacitors (≤0.01 µF) for optimal startup timing and noise suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±3% over –40°C to 125°C, load, line, and process variation - ensures stable bias for precision ADCs and RF front-ends. |
| Max Output Current | 150 mA continuous - supports single-sensor or dual-peripheral loads in compact handheld devices. |
| Dropout Voltage | 170 mV typical at 150 mA - enables operation from 1.37-V input (e.g., single Li-ion cell post-regulation). |
| PSRR | 70 dB at 1 kHz, 67 dB at 100 kHz, 45 dB at 1 MHz - suppresses switching noise from DC/DC converters feeding mixed-signal SoCs. |
| Output Noise | 30 µVRMS (100 Hz–100 kHz) with CNR = 0.01 µF - meets stringent requirements for image sensor analog supply rails. |
| Ground Current | 45 µA typical at no load, 100 µA at 150 mA - extends battery life in always-on wearable and IoT edge nodes. |
| Enable Threshold | VEN(HIGH) = 1.2 V min - compatible with 1.8-V and 3.3-V GPIOs without level-shifting. |
Pinout & Package
TPS71712DCKTG4 is housed in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for high-density PCB layouts in mobile and portable electronics.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input voltage supply | Accepts 2.5–6.5 V; requires 0.1–1 µF ceramic decoupling close to pin for stability and EMI reduction. |
| 2 GND | Power ground reference | Low-impedance return path for regulator core and output capacitor; must connect directly to PCB ground plane. |
| 3 EN | Active-high enable control | Drives >1.2 V to activate; pulls ≤0.4 V to enter shutdown (<1.5 µA ISHDN); internally pulled down when floating. |
| 4 NR | Noise reduction filter node | Connects to 0.01 µF ceramic capacitor to ground; filters bandgap reference noise and boosts PSRR above 10 kHz. |
| 5 OUT | Regulated output | Delivers 1.2 V ±3%; requires ≥1 µF ceramic output capacitor (X5R/X7R) placed adjacent to pin for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low output noise | 30 µVRMS (100 Hz–100 kHz) with 0.01 µF NR capacitor - enables clean power for CMOS image sensors and RF synthesizers. |
| High PSRR bandwidth | 70 dB at 1 kHz, sustained >45 dB up to 1 MHz - rejects ripple from buck converters operating at 500 kHz–2 MHz. |
| Fast startup time | 160 µs typical with 0.01 µF NR capacitor - meets tight power sequencing windows in multi-rail SoC systems. |
| Low-quiescent-current shutdown | <1.5 µA ISHDN over –40°C to 85°C - preserves battery charge during deep-sleep modes in portable instrumentation. |
| Thermal & current protection | 160°C thermal shutdown with 20°C hysteresis and foldback current limit - prevents damage during overload or poor heatsinking. |
Applications
| Camera Sensor Power | Mobile Phone Handsets |
|---|---|
|
Use Scenario: Powers analog supply rail of 12-MP CMOS image sensor in smartphone rear camera module. IC Role / Device Role / Timing Role: Low-noise LDO supplying VANA to sensor's pixel array and analog signal chain. Use Value: 30 µVRMS noise prevents fixed-pattern noise and SNR degradation; 170-mV dropout allows direct regulation from 1.37-V intermediate rail. |
Use Scenario: Supplies 1.2-V core voltage to baseband processor during active call mode with bursty RF transmission. IC Role / Device Role / Timing Role: Primary LDO delivering stable core power during GSM/UMTS transmit bursts. Use Value: 70-dB PSRR at 1 kHz suppresses switching noise from PMIC DC/DC converters; 150-mA rating covers peak processor load. |
| Wireless LAN (Wi-Fi) | Bluetooth® Audio Devices |
|
Use Scenario: Provides clean 1.2-V supply to Wi-Fi transceiver RF front-end and PLL VCO circuitry. IC Role / Device Role / Timing Role: Dedicated LDO isolating sensitive RF analog blocks from noisy digital domains. Use Value: 45-dB PSRR at 1 MHz attenuates harmonics from 2.4-GHz PA switching; SC-70 footprint saves board area in M.2 modules. |
Use Scenario: Powers DAC and headphone amplifier in true wireless stereo (TWS) earbuds with 30-hour battery life. IC Role / Device Role / Timing Role: Ultra-low-IQ LDO enabling always-on audio processing during standby. Use Value: 45 µA no-load ground current minimizes quiescent drain; EN pin allows synchronized power gating with codec wake events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79512DBVR | Same 1.2-V fixed output, but larger SOT-23-5 package (2.92 × 1.62 mm); 120 µA IQ vs 45 µA; 60 dB PSRR at 1 kHz. | Higher quiescent current reduces battery runtime in always-on wearables; larger footprint limits use in ultra-thin designs. | Select when legacy SOT-23 layout reuse is prioritized over size/noise; verify thermal derating due to higher RθJA. |
| MCP1700T-1202E/TT | 1.2-V fixed output in SOT-23-5; 1.6-µA IQ but only 50 mA max output; 40 dB PSRR at 1 kHz; no NR pin. | Insufficient current for camera sensors or Wi-Fi transceivers; lacks noise-reduction capability for RF-sensitive apps. | Choose only for micro-power sensor nodes with sub-50-mA loads where PSRR >60 dB is not required. |
Compared with TPS71712DCKTG4, TPS79512DBVR trades 25 dB PSRR and 75 µA higher IQ for SOT-23 compatibility, while MCP1700T-1202E/TT sacrifices 100 mA output capacity and noise performance for nano-power operation - neither matches the TPS71712DCKTG4's combination of ultra-low noise, 150-mA capability, and SC-70 miniaturization.
Availability
TPS71712DCKTG4 is available at Aetrix Electronics and suitable for camera sensor power, mobile handset baseband supplies, wireless LAN RF front-ends, Bluetooth® audio subsystems, and portable medical diagnostics requiring stable component supply across long production lifecycles.
Supply support for TPS71712DCKTG4 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 for high-reliability applications.
The TPS717 family was engineered specifically for noise-critical, space-constrained portable electronics - delivering best-in-class PSRR, ultra-low noise, and minimal quiescent current in sub-2-mm² packages for camera, RF, and battery-powered systems.
FAQ
What is the minimum input voltage required for TPS71712DCKTG4 to regulate at 1.2 V?
The TPS71712DCKTG4 requires a minimum input voltage of 2.5 V per datasheet specifications, which exceeds the theoretical dropout requirement (1.2 V + 0.17 V = 1.37 V) to ensure guaranteed operation across temperature, process, and load variations. This 2.5-V minimum ensures stable regulation and full PSRR performance even under worst-case conditions.
Can TPS71712DCKTG4 operate without an output capacitor?
No, the TPS71712DCKTG4 requires a minimum 1-µF ceramic output capacitor connected between OUT and GND for stability. Omitting this capacitor causes oscillation and unregulated output. X5R or X7R dielectrics are recommended; tantalum or aluminum electrolytics are not suitable due to ESR and aging effects.
Is the NR pin mandatory for TPS71712DCKTG4 operation?
No, the NR pin is optional but highly recommended for noise-sensitive applications. Leaving NR open degrades PSRR above 10 kHz and increases output noise by up to 3×. For lowest noise, connect a 0.01-µF ceramic capacitor from NR to GND; larger values slow startup without improving noise.
Does TPS71712DCKTG4 support reverse current protection?
No, the TPS71712DCKTG4 does not integrate reverse current protection. Its PMOS pass transistor includes a body diode that conducts if VOUT > VIN, potentially causing backfeed. External protection (e.g., series Schottky diode or ideal diode controller) is required in systems where output voltage may exceed input.
What is the thermal shutdown behavior of TPS71712DCKTG4?
The TPS71712DCKTG4 activates thermal shutdown at approximately 160°C junction temperature and resets at ~140°C. During cycling, output disables completely until cooling occurs. Continuous thermal cycling indicates inadequate PCB copper area or excessive ambient temperature - design must maintain TJ ≤125°C under worst-case load and ambient conditions.
TPS71712DCKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 70dB ~ 45dB (100Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TPS71712DCKTG4 FAQ
1.How can I place an order for TPS71712DCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS71712DCKTG4 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 TPS71712DCKTG4 reliable?
The price and inventory of TPS71712DCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS71712DCKTG4 is usually 5 days.
3.What payment methods are accepted for TPS71712DCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS71712DCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS71712DCKTG4?
TPS71712DCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS71712DCKTG4 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 TPS71712DCKTG4?
For technical support, including TPS71712DCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS71712DCKTG4 requirements.
6.How does Aetrix verify that TPS71712DCKTG4 is sourced from the original manufacturer or authorized distributors?
All TPS71712DCKTG4 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 TPS71712DCKTG4 meets industry standards.
7.What is the process for return or replacement of TPS71712DCKTG4?
All TPS71712DCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS71712DCKTG4, 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 TPS71712DCKTG4 part is unused and in its original packaging.
Return procedure for TPS71712DCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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