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Texas Instruments TPS60401DBVT
- Part No.:
- TPS60401DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60401DBVT.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,126
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Product details
Overview
TPS60401DBVT from Texas Instruments is an unregulated charge-pump voltage inverter IC that generates a negative output voltage (–VI) from a 1.6 V to 5.5 V input, delivers up to 60 mA output current, operates at fixed 20 kHz switching frequency, and requires only three 1-µF ceramic capacitors. It is used in portable instrumentation for sensor biasing and LCD bias generation.
For engineers reviewing the TPS60401DBVT datasheet, TPS60401DBVT pinout, TPS60401DBVT application, or TPS60401DBVT equivalent, key selection criteria include its fixed 20 kHz operation (vs variable/50/250 kHz variants), low 65 µA typical quiescent current, SOT-23-5 package footprint, and unregulated –VI output behavior requiring load-dependent voltage droop management.
Technical Context
The TPS60401DBVT implements a two-phase switched-capacitor inverter topology using internal MOSFET switches to alternately charge and reverse-connect a flying capacitor (CFLY), thereby generating a negative output relative to ground. Its fixed 20 kHz oscillator frequency determines ripple magnitude and capacitor sizing requirements.
Unlike regulated DC-DC converters, it provides no feedback control - output voltage follows VO ≈ –(VI – IO × RO), where RO ≈ 15 Ω at room temperature and 5 V input. This unregulated behavior directly links output regulation to load current and capacitor ESR, making it suitable for applications tolerant of moderate voltage droop.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.6 V to 5.5 V - supports single Li-ion, dual/triple alkaline/NiMH cells, or 3.3 V/5 V rails without pre-regulation. |
| Output Current | Up to 60 mA - sufficient for biasing LCD segments, RF GaAs amplifiers, or low-power op-amp supplies. |
| Switching Frequency | Fixed 20 kHz - enables use of larger-value, lower-cost 10 µF ceramic capacitors to reduce output ripple to 20 mVP-P. |
| Quiescent Current | Typical 65 µA - minimizes standby power loss in battery-operated systems with intermittent load demand. |
| Output Resistance | ≈15 Ω at 25°C, 5 V - defines voltage droop: e.g., 30 mA load causes ~0.45 V deviation from ideal –VI. |
| Package | SOT-23-5 (2.90 mm × 1.60 mm) - surface-mount, thermally efficient package enabling compact 50-mm² board area designs. |
Pinout & Package
TPS60401DBVT is housed in a 5-pin SOT-23 package with exposed pad not electrically connected. The package measures 2.90 mm × 1.60 mm × 1.30 mm and is rated for operation from –40°C to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power output terminal | Delivers inverted negative voltage (VO ≈ –VI); must be bypassed to GND with CO = 10 µF ceramic capacitor per datasheet. |
| IN (Pin 2) | Positive supply input | Accepts 1.6–5.5 V input; requires CI = 10 µF ceramic bypass capacitor to suppress switching noise on source rail. |
| CFLY– (Pin 3) | Negative flying capacitor terminal | Connects to negative side of C(fly) = 10 µF; forms charge-transfer path during phase 2 of switching cycle. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and CFLY+; must be low-impedance plane to minimize noise coupling and thermal resistance. |
| CFLY+ (Pin 5) | Positive flying capacitor terminal | Connects to positive side of C(fly) = 10 µF; forms charge-transfer path during phase 1 of switching cycle. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky diode | Enables reliable start-up into capacitive or current-sinking loads without external diode, saving board space and eliminating reverse-bias leakage path. |
| Three-capacitor architecture | Only CI, C(fly), and CO required - all 10 µF ceramics for TPS60401DBVT - eliminates inductors and simplifies layout versus inductive inverters. |
| Low quiescent current | 65 µA typical at 5 V input - extends battery life in always-on portable instruments with light or intermittent load. |
| Unregulated inverting topology | VO tracks –VI with predictable droop (RO ≈ 15 Ω), enabling precise bias point setting via load resistor or post-filter design. |
Applications
| LCD Bias Generation | GaAs RF Power Amplifier Bias |
|---|---|
Use Scenario: Generating negative gate bias for STN/TN LCD segment drivers in handheld medical devices. IC Role / Device Role / Timing Role: Charge-pump inverter providing stable –3.3 V or –5 V bias rail from main 3.3 V system supply. Use Value: Eliminates need for discrete inductor-based inverter; 20 kHz operation allows use of cost-effective 10 µF X5R ceramics with <20 mVP-P ripple. | Use Scenario: Supplying negative drain/gate bias to GaAs FETs in ultra-low-power IoT RF transceivers. IC Role / Device Role / Timing Role: Unregulated inverter delivering –2.5 V to –4.5 V bias from single 3.3 V Li-ion cell. Use Value: 60 mA capability supports pulsed RF bursts; integrated Schottky ensures clean start-up without external components. |
| Sensor Supply in Portable Instruments | Bipolar Operational Amplifier Supply |
Use Scenario: Powering precision analog front-end sensors (e.g., MEMS accelerometers, pH electrodes) requiring symmetric ±2.5 V rails. IC Role / Device Role / Timing Role: Negative rail generator paired with standard LDO to create split supply from single 5 V source. Use Value: SOT-23-5 footprint and 50-mm² total solution size enable integration into space-constrained handheld test equipment. | Use Scenario: Providing –5 V rail for rail-to-rail op-amps in battery-powered data loggers with single-supply microcontrollers. IC Role / Device Role / Timing Role: Inverting charge pump supplying negative supply to op-amp V– pin while MCU runs on same 5 V rail. Use Value: 65 µA quiescent current minimizes impact on system battery life during sleep mode between sensor readings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60402DBVT | Fixed 50 kHz switching frequency; uses 3.3 µF capacitors; higher quiescent current (120 µA typ). | Better ripple/noise performance than TPS60401DBVT at medium loads due to higher frequency; suited for noise-sensitive analog circuits. | Select TPS60402DBVT when lower output ripple (<20 mVP-P) and faster transient response are prioritized over lowest quiescent current. |
| TPS60403DBVT | Fixed 250 kHz switching frequency; uses 1 µF capacitors; highest quiescent current (425 µA typ). | Enables smallest capacitor footprint (1 µF) and lowest output impedance at high frequencies; optimized for compact, high-current portable designs. | Select TPS60403DBVT when board space is critical and 250 kHz switching noise can be filtered, accepting higher standby current. |
Compared with TPS60401DBVT, TPS60402DBVT offers improved ripple suppression at 50 kHz but draws more quiescent current, while TPS60403DBVT achieves minimal capacitor size at 250 kHz at the expense of standby power - all share identical SOT-23-5 pinout and unregulated –VI output behavior.
Availability
TPS60401DBVT is available at Aetrix Electronics and suitable for LCD bias generation, GaAs RF amplifier biasing, and portable sensor supply applications requiring stable component supply across industrial and medical product lifecycles.
Supply support for TPS60401DBVT 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, embedded processing, and power management technologies, with leadership in high-reliability, low-power signal chain solutions.
The TPS6040x family was designed specifically for space- and cost-constrained portable electronics needing compact, capacitor-only negative voltage generation - targeting medical instruments, handheld test gear, and battery-powered RF modules.
FAQ
What is the output voltage behavior of the TPS60401DBVT?
The TPS60401DBVT provides an unregulated inverted output: VO ≈ –VI, with voltage droop proportional to load current and output resistance (RO ≈ 15 Ω). At 30 mA output, VO deviates ~0.45 V from ideal –VI; actual value must be verified under operating conditions using Equation VO = –(VI – IO × RO) from the datasheet.
Why does the TPS60401DBVT require 10 µF capacitors while other TPS6040x variants use 1 µF?
The TPS60401DBVT's fixed 20 kHz switching frequency necessitates larger 10 µF flying and output capacitors to maintain low output ripple (20 mVP-P) and stable operation. Lower frequency operation increases charge-transfer time per cycle, requiring greater capacitance to limit voltage sag and ripple - confirmed in Table 9-1 of the SLVS324C datasheet.
Does the TPS60401DBVT include built-in protection features?
Yes, the TPS60401DBVT integrates an active Schottky diode function to prevent output voltage from rising above GND during startup or load transients - eliminating the need for an external diode. It also includes absolute maximum ratings protection (e.g., –0.3 V to 5.5 V on IN, –5.5 V to 0.3 V on OUT), but lacks overcurrent or thermal shutdown circuitry per datasheet Section 7.1.
Can the TPS60401DBVT operate from a single 1.8 V alkaline cell?
Yes, the TPS60401DBVT supports input voltages as low as 1.6 V, making it compatible with a single fresh alkaline cell (nominal 1.5 V, up to 1.65 V open-circuit). At 1.8 V input, it delivers up to 60 mA with VO ≈ –1.8 V (adjusted for droop), validated in Figure 7-11 and Section 7.3 Recommended Operating Conditions.
How does the TPS60401DBVT differ from the TPS60400DBVT in practical design?
The TPS60401DBVT uses fixed 20 kHz operation with 10 µF capacitors and 65 µA quiescent current, while the TPS60400DBVT employs variable-frequency (50–250 kHz) control, 1 µF capacitors, and higher 125 µA quiescent current. TPS60401DBVT suits low-noise, low-quiescent applications; TPS60400DBVT better handles wide dynamic load ranges without changing capacitor values.
TPS60401DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin, Vin/2
- Voltage - Output (Max):
- -
- Current - Output:
- 60mA
- Frequency - Switching:
- 20kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS60401DBVT FAQ
1.How can I place an order for TPS60401DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60401DBVT 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 TPS60401DBVT reliable?
The price and inventory of TPS60401DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60401DBVT is usually 5 days.
3.What payment methods are accepted for TPS60401DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60401DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60401DBVT?
TPS60401DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60401DBVT 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 TPS60401DBVT?
For technical support, including TPS60401DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60401DBVT requirements.
6.How does Aetrix verify that TPS60401DBVT is sourced from the original manufacturer or authorized distributors?
All TPS60401DBVT 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 TPS60401DBVT meets industry standards.
7.What is the process for return or replacement of TPS60401DBVT?
All TPS60401DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS60401DBVT, 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 TPS60401DBVT part is unused and in its original packaging.
Return procedure for TPS60401DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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