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Texas Instruments TPS60403DBVT
- Part No.:
- TPS60403DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60403DBVT.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,045
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Product details
Overview
TPS60403DBVT 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 a fixed 250 kHz switching frequency, and requires only three 1-µF ceramic capacitors - used in portable LCD bias and RF GaAs amplifier supply circuits.
For engineers reviewing the TPS60403DBVT datasheet, TPS60403DBVT pinout, TPS60403DBVT application, or TPS60403DBVT equivalent, this page provides verified specifications, SOT-23-5 pin functions, real-world use cases in battery-powered instrumentation, and validated alternative parts for design flexibility and supply continuity.
Technical Context
The TPS60403DBVT implements a two-phase switched-capacitor topology with integrated MOSFET switches and an active Schottky-diode circuit for reliable startup into capacitive or resistive loads. Its fixed 250 kHz oscillator minimizes external capacitor size while maintaining low output ripple (15 mVP-P at 60 mA).
Unlike regulated inverters, it provides unregulated inversion: output voltage follows VO ≈ –VI – (IO × RO), where RO ≈ 15 Ω at 25°C and 5 V input. Efficiency exceeds 90% across 1–60 mA load range, peaking near 30 mA under 5 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 60 mA maximum - supports moderate-power analog rails without thermal derating in SOT-23 package. |
| Input Voltage Range | 1.6 V to 5.5 V - compatible with single Li-ion, dual/triple alkaline/NiMH cells, or 3.3 V/5 V system rails. |
| Switching Frequency | 250 kHz (fixed) - enables use of compact 1-µF flying/output capacitors and reduces EMI compared to lower-frequency variants. |
| Quiescent Current | 425 µA typical (no load, 5 V) - balances low standby power with high-frequency operation for portable systems. |
| Output Ripple | 15 mVP-P at 60 mA - measured with 1-µF C(fly) and CO; suitable for LCD bias and sensor supplies without post-filtering. |
| Output Resistance | ≈15 Ω at 25°C, 5 V - defines load regulation: e.g., 30 mA load drops VO by ~450 mV from ideal –5 V. |
| Package | SOT-23-5 (2.90 mm × 1.60 mm) - surface-mount footprint enabling <50 mm² total solution area. |
Pinout & Package
TPS60403DBVT is housed in a 5-pin SOT-23 package with exposed pad not electrically connected. Pin functions are validated per TI SLVS324C Rev C (Oct 2020).
| 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 = 1 µF ceramic capacitor. |
| IN (Pin 2) | Positive supply input | Accepts 1.6–5.5 V input; requires local bypass capacitor (CI = 1 µF) to suppress switching noise on source rail. |
| CFLY– (Pin 3) | Negative flying capacitor terminal | Connects to negative side of 1-µF flying capacitor; forms charge-transfer path during second half-cycle. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and CFLY+; PCB layout must minimize impedance to maintain stability. |
| CFLY+ (Pin 5) | Positive flying capacitor terminal | Connects to positive side of 1-µF flying capacitor; tied to GND during discharge phase to invert polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky diode | Enables safe startup into precharged loads without external diode - eliminates risk of positive output excursion and saves 1.5 mm² board area. |
| Three 1-µF ceramic capacitor solution | Reduces BOM count and total footprint vs. legacy designs requiring >10 µF capacitors; supports 0805/1206 standard sizes. |
| 250 kHz fixed-frequency operation | Optimizes capacitor size and EMI profile for portable medical instruments and handheld test gear where size and noise matter. |
| Unregulated inversion with predictable droop | VO = –VI – (IO × 15 Ω) enables precise rail-splitting and bipolar supply design without feedback loop complexity. |
| Wide input voltage compatibility | Operates from 1.6 V (fresh alkaline cell) to 5.5 V (5 V rail), supporting multi-cell battery chemistries without intermediate LDOs. |
Applications
| LCD Bias Supply | RF GaAs Power Amplifier Bias |
|---|---|
|
Use Scenario: Generating negative gate bias for TFT-LCD source drivers in handheld displays powered by single Li-ion cells. IC Role / Device Role / Timing Role: Unregulated voltage inverter providing –3.3 V to –5 V rail from 3.3 V or 4.2 V battery input. Use Value: Eliminates need for transformer-based or inductor-based inverters - reduces height, cost, and EMI in space-constrained display modules. |
Use Scenario: Supplying negative VGS bias to GaAs FETs in 2.4 GHz Wi-Fi front-end modules operating from 3.3 V system rail. IC Role / Device Role / Timing Role: High-frequency (250 kHz) charge pump delivering stable –3.3 V at ≤25 mA with low ripple. Use Value: Enables fast turn-on/turn-off of RF power stages via clean, low-noise negative bias - critical for PA efficiency and linearity. |
| Sensor Signal Conditioning Supply | Bipolar Op-Amp Rail Splitting |
|
Use Scenario: Providing isolated negative supply for precision analog sensors (e.g., MEMS accelerometers) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-quiescent-current (425 µA) inverter powering sensor signal chain from shared 3.3 V microcontroller rail. Use Value: Maintains sensor common-mode range and ADC reference integrity without adding LDO dropout or inductor losses. |
Use Scenario: Creating ±2.5 V dual rails from single 5 V supply for rail-to-rail op-amps in battery-powered data loggers. IC Role / Device Role / Timing Role: Unregulated inverter generating –2.5 V output; paired with low-dropout regulator or RC filter for stability. Use Value: Achieves true bipolar operation in ultra-low-power systems where inductor-based solutions exceed size/power budgets. |
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; requires 3.3 µF capacitors; quiescent current 120 µA typical. | Better light-load efficiency and lower EMI, but larger capacitors increase footprint and cost. | Select when lower standby power and reduced radiated emissions outweigh board area constraints. |
| TPS60401DBVT | Fixed 20 kHz frequency; requires 10 µF capacitors; quiescent current 65 µA typical. | Superior efficiency below 10 mA and lowest IQ, but 10 µF ceramics increase cost and require larger 1206 footprints. | Prefer for long-life battery applications (e.g., remote sensors) where IQ dominates lifetime energy budget. |
Compared with TPS60403DBVT, TPS60402DBVT trades higher capacitor size for better low-current efficiency, while TPS60401DBVT offers the lowest quiescent current at the expense of largest external components - all three share identical SOT-23-5 pinout and functional interface but differ in frequency, capacitor requirements, and IQ/ripple trade-offs.
Availability
TPS60403DBVT is available at Aetrix Electronics and suitable for LCD bias, RF GaAs amplifier bias, and portable sensor supply applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for TPS60403DBVT 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 over 50 years of innovation in high-reliability power conversion ICs.
The TPS6040x family was designed specifically for compact, capacitor-only DC-DC inversion in space- and power-constrained portable electronics - emphasizing minimal external components, robust startup behavior, and wide-input-voltage operation.
FAQ
What is the primary function of the TPS60403DBVT?
The TPS60403DBVT is an unregulated charge-pump voltage inverter IC that converts a positive input voltage (1.6 V to 5.5 V) into a corresponding negative output voltage (VO ≈ –VI). It delivers up to 60 mA with fixed 250 kHz operation and requires only three 1-µF ceramic capacitors. The TPS60403DBVT does not regulate output voltage - its output droops linearly with load current due to inherent 15 Ω output resistance.
Does the TPS60403DBVT require an external Schottky diode?
No, the TPS60403DBVT integrates an active Schottky-diode circuit to safely manage startup into precharged loads - preventing the output from rising above ground during initial power-up. This eliminates the need for an external diode, reducing component count, board area, and potential failure points. The TPS60403DBVT's internal circuit ensures defined startup behavior even with capacitive or high-impedance loads.
What capacitor values are required for the TPS60403DBVT?
The TPS60403DBVT requires exactly three 1-µF ceramic capacitors: one input bypass capacitor (CI), one flying capacitor (C(fly)), and one output filter capacitor (CO). All must be low-ESR X5R/X7R types (e.g., 0805 or 1206). Using smaller values degrades output resistance and power capability; larger values provide no meaningful benefit at 250 kHz and increase cost and footprint. The TPS60403DBVT is optimized for this 1-µF configuration.
How does output voltage accuracy behave under load for the TPS60403DBVT?
The TPS60403DBVT provides unregulated inversion: VO = –VI – (IO × RO), where RO ≈ 15 Ω at room temperature. For example, with VI = 5 V and IO = 30 mA, VO ≈ –4.55 V. This predictable droop enables accurate rail-splitting and bias design without feedback. The TPS60403DBVT's output voltage varies directly with input voltage and load - no closed-loop regulation is present or implied in its operation.
Is the TPS60403DBVT pin-compatible with other TPS6040x variants?
Yes, all TPS6040x devices - including TPS60400DBVT, TPS60401DBVT, TPS60402DBVT, and TPS60403DBVT - share identical SOT-23-5 pinout, package dimensions, and terminal functions. They differ only in switching frequency, recommended capacitor values, and quiescent current. This allows direct substitution in existing layouts when updating for different ripple, efficiency, or capacitor-size requirements - the TPS60403DBVT fits the same footprint and connects identically.
TPS60403DBVT 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:
- 250kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS60403DBVT FAQ
1.How can I place an order for TPS60403DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60403DBVT 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 TPS60403DBVT reliable?
The price and inventory of TPS60403DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60403DBVT is usually 5 days.
3.What payment methods are accepted for TPS60403DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60403DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60403DBVT?
TPS60403DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60403DBVT 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 TPS60403DBVT?
For technical support, including TPS60403DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60403DBVT requirements.
6.How does Aetrix verify that TPS60403DBVT is sourced from the original manufacturer or authorized distributors?
All TPS60403DBVT 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 TPS60403DBVT meets industry standards.
7.What is the process for return or replacement of TPS60403DBVT?
All TPS60403DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS60403DBVT, 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 TPS60403DBVT part is unused and in its original packaging.
Return procedure for TPS60403DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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