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Texas Instruments TPS60403DBVRG4
- Part No.:
- TPS60403DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60403DBVRG4.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
TPS60403DBVRG4 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 LCD bias, RF GaAs amplifier bias, and portable sensor supplies.
For engineers reviewing the TPS60403DBVRG4 datasheet, TPS60403DBVRG4 pinout, TPS60403DBVRG4 application, or TPS60403DBVRG4 equivalent, key selection criteria include fixed 250 kHz operation for low-output-ripple performance, 15 Ω typical output resistance at 5 V input, integrated active Schottky-diode startup circuitry, and SOT-23-5 package compatibility with space-constrained portable designs.
Technical Context
The TPS60403DBVRG4 implements a two-phase switched-capacitor inverter topology: during phase one, internal switches charge the flying capacitor (Cfly) to VI; during phase two, Cfly is flipped to deliver –VI to the output. Its fixed 250 kHz oscillator enables predictable ripple frequency and simplified EMI filtering.
Unlike regulated converters, it provides unregulated inversion - output voltage follows VO ≈ –(VI – RO × IO), where RO = 15 Ω typ. It integrates startup protection via an on-chip active Schottky-diode function, eliminating external diode requirements and ensuring reliable start-up into capacitive or current-sinking loads.
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 | 60 mA max - sufficient for biasing LCD segments, RF power amplifiers, or low-power op-amps in portable instrumentation. |
| Switching Frequency | 250 kHz (fixed) - enables use of small 1-µF ceramic capacitors and predictable ripple spectrum for filtering. |
| Quiescent Current | 425 µA typ (no load, 5 V) - balances low-power standby with high-frequency performance; higher than TPS60401 but optimized for ripple-sensitive apps. |
| Output Resistance | 15 Ω typ at 25°C, 5 V input - defines load regulation: e.g., 30 mA load causes ~0.45 V droop from ideal –5 V. |
| Output Ripple | 15 mVP-P (IO = 5 mA, Cfly = CO = 1 µF) - lowest among TPS6040x family due to high fOSC, easing noise-critical analog supply design. |
| Package | SOT-23-5 (2.90 mm × 1.60 mm) - surface-mount, thermally efficient, compatible with standard pick-and-place and reflow processes. |
Pinout & Package
TPS60403DBVRG4 is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body), optimized for minimal board area (<50 mm² total solution) and thermal performance (RθJA = 221.2 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power output terminal | Delivers inverted negative voltage (–VI); must be bypassed to GND with 1-µF ceramic capacitor (CO) for stability and ripple reduction. |
| IN (Pin 2) | Supply input | Accepts 1.6–5.5 V input; requires local 1-µF bypass capacitor (CI) to suppress switching noise and maintain input impedance. |
| CFLY– (Pin 3) | Flying capacitor negative terminal | Connects to negative side of 1-µF flying capacitor (Cfly); forms charge-transfer path during inversion phase. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and Cfly; critical for minimizing ground bounce and ensuring accurate output regulation. |
| CFLY+ (Pin 5) | Flying capacitor positive terminal | Connects to positive side of 1-µF flying capacitor; alternately charged/discharged by internal MOSFET switches to enable voltage inversion. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode startup | Eliminates need for external diode, prevents positive output voltage during startup, and ensures robust turn-on into capacitive or sinking loads. |
| Fixed 250 kHz switching frequency | Enables consistent ripple frequency for targeted LC/RC filtering and reduces sensitivity to capacitor aging or temperature drift vs. variable-frequency variants. |
| Ultra-low external component count | Only three 1-µF ceramic capacitors required - minimizes BOM cost, PCB area, and assembly complexity versus inductor-based inverters. |
| Wide input voltage range (1.6 V–5.5 V) | Supports direct battery operation across chemistries (Li-ion, NiMH, alkaline) without LDO pre-regulation, extending system runtime. |
| 15 Ω typical output resistance | Provides predictable load regulation behavior for analog biasing applications where moderate droop is acceptable and calculable. |
Applications
| LCD Bias Supply | RF GaAs Power Amplifier Bias |
|---|---|
|
Use Scenario: Generating negative gate bias voltage for TFT-LCD segment drivers in handheld displays. IC Role / Device Role / Timing Role: Unregulated voltage inverter providing stable –3 V to –5 V rail from 3.3 V system supply. Use Value: Enables compact, low-noise LCD bias with 15 mVP-P ripple at 250 kHz - within display driver tolerance and eliminates inductor EMI. |
Use Scenario: Supplying negative VGS bias to GaAs FETs in cellular front-end modules. IC Role / Device Role / Timing Role: High-frequency charge-pump inverter delivering –2.5 V to –5 V at up to 60 mA with fast transient response. Use Value: Fixed 250 kHz operation allows predictable filtering; integrated startup diode prevents gate overvoltage during power sequencing. |
| Portable Sensor Signal Conditioning | Bipolar Op-Amp Supply in Battery Devices |
|
Use Scenario: Powering precision analog sensors (e.g., MEMS accelerometers) requiring symmetric ±2.5 V rails from single 5 V source. IC Role / Device Role / Timing Role: Negative rail generator paired with LDO or resistor divider to create split supply. Use Value: 1.6 V minimum input enables operation down to near-dead battery; 60 mA output supports multiple sensor channels simultaneously. |
Use Scenario: Creating dual-rail supply for rail-to-rail op-amps in portable medical instruments (e.g., ECG front-ends). IC Role / Device Role / Timing Role: Inverting half of a single-ended supply to generate clean –VCC for analog signal processing. Use Value: SOT-23-5 footprint + three 0805 capacitors fits sub-1 cm² area; 15 Ω output resistance ensures stable bias under dynamic load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60402DBVR | Fixed 50 kHz switching frequency; 3.3 µF capacitors required; 120–270 µA quiescent current. | Higher output ripple (20 mVP-P) but lower IQ - better for medium-noise, longer-battery-life systems. | Select when lower quiescent current outweighs ripple sensitivity and board space permits larger capacitors. |
| TPS60401DBVR | Fixed 20 kHz switching frequency; 10 µF capacitors required; 65 µA quiescent current typical. | Lowest IQ but highest ripple (20 mVP-P) and largest external caps - suited for low-power, non-analog biasing. | Choose for ultra-low-power standby modes where ripple >20 mVP-P and 10 µF cap size are acceptable. |
Compared with TPS60403DBVRG4, TPS60402DBVR offers lower IQ but higher ripple and larger capacitors, while TPS60401DBVR minimizes supply current at the expense of both ripple and component size - making TPS60403DBVRG4 optimal for noise-sensitive, space-constrained, medium-current inversion.
Availability
TPS60403DBVRG4 is available at Aetrix Electronics and suitable for LCD bias, RF GaAs amplifier bias, and portable sensor supply applications requiring stable component supply, long-term manufacturability, and guaranteed traceable sourcing.
Supply support for TPS60403DBVRG4 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 expertise in high-efficiency DC-DC conversion.
The TPS6040x product line was designed specifically for compact, low-noise, capacitor-based voltage inversion in battery-powered portable electronics - prioritizing minimal external components, wide input flexibility, and reliable startup behavior.
FAQ
What is the primary function of the TPS60403DBVRG4?
The TPS60403DBVRG4 is an unregulated charge-pump voltage inverter IC that converts a positive input voltage (1.6 V–5.5 V) into a corresponding negative output voltage (–VI). It delivers up to 60 mA output current using a fixed 250 kHz switching frequency and only three 1-µF ceramic capacitors. Its core function is efficient, compact, inductorless negative rail generation for portable analog and RF applications - not regulation or feedback control.
Does the TPS60403DBVRG4 require external diodes for startup?
No, the TPS60403DBVRG4 integrates an active Schottky-diode function to prevent positive output voltage during initial power-up, eliminating the need for an external diode. This built-in circuit ensures safe, controlled startup into capacitive or current-sinking loads - a key differentiator from discrete charge-pump implementations. The TPS60403DBVRG4 achieves this with internal transistor-level circuitry, reducing BOM count and board area.
What are the recommended external capacitors for the TPS60403DBVRG4?
The TPS60403DBVRG4 requires three 1-µF ceramic capacitors: CI (input bypass), Cfly (flying capacitor), and CO (output filter). TI recommends X5R/X7R dielectrics in 0805 or 1206 case sizes (e.g., Taiyo Yuden LMK212BJ105KG or TDK C2012X5R1C105M) for low ESR and stable capacitance over temperature and voltage. These values are validated for 60 mA operation and 15 mVP-P ripple performance at 250 kHz.
How does output voltage regulation work in the TPS60403DBVRG4?
The TPS60403DBVRG4 provides unregulated inversion: VO ≈ –(VI – RO × IO), where RO = 15 Ω typical. There is no feedback loop or error amplifier - output voltage droops linearly with load current. For example, at 5 V input and 30 mA load, VO ≈ –4.55 V. Designers must account for this droop in system-level biasing calculations; it is not a defect but an inherent characteristic of switched-capacitor topology.
Is the TPS60403DBVRG4 pin-compatible with other TPS6040x variants?
Yes, all TPS6040x devices - including TPS60403DBVRG4, TPS60402DBVR, and TPS60401DBVR - share identical SOT-23-5 pinout (OUT, IN, CFLY–, GND, CFLY+) and package dimensions. This allows direct substitution in existing layouts when switching between frequency variants, provided external capacitor values are updated per datasheet Table 9-1 to match the new fOSC and ripple requirements.
TPS60403DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TPS60403DBVRG4 FAQ
1.How can I place an order for TPS60403DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60403DBVRG4 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 TPS60403DBVRG4 reliable?
The price and inventory of TPS60403DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60403DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS60403DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60403DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60403DBVRG4?
TPS60403DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60403DBVRG4 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 TPS60403DBVRG4?
For technical support, including TPS60403DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60403DBVRG4 requirements.
6.How does Aetrix verify that TPS60403DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS60403DBVRG4 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 TPS60403DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS60403DBVRG4?
All TPS60403DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS60403DBVRG4, 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 TPS60403DBVRG4 part is unused and in its original packaging.
Return procedure for TPS60403DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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