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Texas Instruments TPS60403DBVR
- Part No.:
- TPS60403DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60403DBVR.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:26,989
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Product details
Overview
TPS60403DBVR 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 instrumentation for sensor biasing and bipolar amplifier supplies.
For engineers reviewing the TPS60403DBVR datasheet, TPS60403DBVR pinout, TPS60403DBVR application, or TPS60403DBVR equivalent, this page provides verified functional identity, confirmed SOT-23-5 pin mapping, measured 15 Ω typical output resistance at 5 V input, 15 mVP-P output ripple at 60 mA, and validated alternative options for negative rail generation in space-constrained battery-powered systems.
Technical Context
The TPS60403DBVR implements a two-phase switched-capacitor topology with integrated MOSFET switches and an active Schottky-diode circuit for controlled startup into capacitive loads. Its fixed 250 kHz oscillator minimizes external capacitor size while maintaining low output impedance.
Unlike regulated DC-DC converters, it provides unregulated inversion: VO ≈ –VI – (IO × RO), where RO ≈ 15 Ω at 25°C and 5 V input. Output voltage droop is predictable and linear with load current, enabling precise rail-splitting and biasing without feedback compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 60 mA maximum - supports moderate-power analog rails like op-amp dual supplies or RF GaAs bias. |
| Input voltage range | 1.6 V to 5.5 V - compatible with single Li-ion, 2–3 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. |
| Output voltage ripple | 15 mVP-P at 60 mA - low enough for precision analog biasing without post-filtering in many applications. |
| Quiescent current | 425 µA typical (no load, 5 V) - balances efficiency at light loads while supporting always-on portable functions. |
| Output resistance | 15 Ω typical at 25°C, 5 V input - defines predictable VO droop (e.g., –4.1 V at 60 mA from 5 V input). |
| Package | SOT-23-5 (2.90 mm × 1.60 mm) - enables high-density layout on sub-50 mm² PCB area with minimal footprint. |
Pinout & Package
TPS60403DBVR is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body), optimized for low-profile, high-efficiency charge-pump layouts with minimal external components.
| 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 C(fly); forms charge-transfer path during second half-cycle of switching operation. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and C(fly); must be low-impedance connection to minimize noise and voltage offset. |
| CFLY+ (Pin 5) | Positive flying capacitor terminal | Connects to positive side of C(fly); alternately connects to IN (charge phase) and GND (discharge phase). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode circuit | Enables reliable startup into precharged loads without external diode - saves board space and eliminates reverse-current risk. |
| Fixed 250 kHz switching frequency | Allows use of small 1-µF ceramic capacitors for both flying and output stages, reducing BOM count and PCB area vs. 20 kHz/50 kHz variants. |
| Unregulated inversion with known output resistance | RO ≈ 15 Ω enables predictable voltage droop modeling (VO = –VI – IO×RO), simplifying rail-splitter and bias design without regulation overhead. |
| Low quiescent current at light loads | 425 µA typical no-load supply current extends battery life in always-on portable instrumentation and medical sensors. |
| Wide input voltage compatibility | Operates from 1.6 V (single-cell alkaline end-of-life) to 5.5 V (5 V rail), supporting diverse battery chemistries and system architectures. |
Applications
| LCD Bias | GaAs RF Power Amp Bias |
|---|---|
|
Use Scenario: Generating negative gate bias for TFT-LCD column drivers in handheld displays. IC Role / Device Role / Timing Role: Unregulated voltage inverter providing stable –3 V to –5 V bias rail from 3.3 V system supply. Use Value: Eliminates need for transformer-based or inductor-based inverters - reduces height, cost, and EMI in thin display modules. |
Use Scenario: Supplying negative gate voltage to GaAs FETs in cellular front-end power amplifiers. IC Role / Device Role / Timing Role: Charge-pump inverter delivering –2.5 V to –4 V bias from 3.3 V LDO output. Use Value: Achieves <15 mVP-P ripple at 25 mA load - meets GaAs bias stability requirements without LC filtering. |
| Sensor Supply in Portable Instruments | Bipolar Amplifier Supply |
|
Use Scenario: Powering precision analog front-ends (e.g., strain gauge bridges, thermopile sensors) in battery-operated test equipment. IC Role / Device Role / Timing Role: Negative rail generator for dual-supply op-amps and ADC references requiring symmetric ±2.5 V rails. Use Value: Predictable 15 Ω output resistance allows accurate bias voltage calculation under varying sensor load conditions. |
Use Scenario: Creating split-rail supplies for rail-to-rail op-amps in portable audio or medical signal conditioning circuits. IC Role / Device Role / Timing Role: Inverting half of a single-ended supply to generate complementary negative rail (e.g., +3.3 V / –3.3 V). Use Value: SOT-23-5 footprint + three 0805 capacitors fits within 50 mm² - enables miniaturized, low-noise analog signal chains. |
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; requires 3.3 µF capacitors; 120–270 µA quiescent current. | Higher output ripple (20 mVP-P) but better light-load efficiency; suited for less noise-sensitive biasing. | Select when lower IQ and relaxed ripple specs allow larger capacitors and reduced EMI sensitivity. |
| TPS60401DBVR | Fixed 20 kHz switching frequency; requires 10 µF capacitors; 65–190 µA quiescent current. | Lowest IQ but highest ripple (20 mVP-P) and largest capacitor footprint; best for ultra-low-power standby modes. | Select when minimizing no-load current is critical and board space permits 1206-size 10 µF ceramics. |
Compared with TPS60403DBVR, TPS60402DBVR trades higher capacitor size and ripple for improved light-load efficiency, while TPS60401DBVR prioritizes lowest quiescent current at the expense of footprint and ripple - making TPS60403DBVR optimal for space-constrained, medium-noise-tolerance applications needing fast switching and minimal component count.
Availability
TPS60403DBVR is available at Aetrix Electronics and suitable for LCD bias, GaAs RF amplifier bias, and portable sensor supply applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS60403DBVR 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 precision power conversion and signal chain solutions.
The TPS6040x family was designed specifically for compact, capacitor-based negative rail generation in battery-powered portable electronics - emphasizing minimal external components, predictable unregulated output behavior, and robust startup into capacitive loads.
FAQ
What is the primary function of the TPS60403DBVR?
The TPS60403DBVR 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) with up to 60 mA output capability. It uses a fixed 250 kHz switching frequency and requires only three 1-µF ceramic capacitors - making it ideal for space-constrained portable applications such as LCD bias and sensor supply rails. The TPS60403DBVR does not regulate output voltage; instead, its output follows VO = –VI – (IO × RO), where RO ≈ 15 Ω.
Does the TPS60403DBVR require external diodes for startup?
No, the TPS60403DBVR integrates an active Schottky-diode circuit to manage startup into precharged loads - eliminating the need for an external diode. This internal circuit prevents the output from being pulled above ground during initial power-up and ensures controlled, repeatable startup behavior across varying load capacitances. This feature directly reduces BOM count and PCB area versus discrete-diode solutions, and is explicitly confirmed in the TPS60403DBVR datasheet Section 8.4.1.
What capacitor values are required for proper operation of the TPS60403DBVR?
The TPS60403DBVR requires three 1-µF X5R/X7R ceramic capacitors: one input bypass capacitor (CI), one flying capacitor (C(fly)), and one output filter capacitor (CO). These values are specified in Table 9-1 of the official datasheet and validated for full 60 mA output capability and ≤15 mVP-P ripple. Using smaller values degrades maximum output current and increases ripple; larger values provide diminishing returns due to internal switch resistance dominance. All capacitors must be low-ESR ceramic types (e.g., 0805 or 1206 case sizes) for optimal performance.
How does output voltage accuracy behave under load for the TPS60403DBVR?
The TPS60403DBVR provides unregulated inversion: VO = –VI – (IO × RO), where RO ≈ 15 Ω at 25°C and 5 V input. For example, with VI = 5 V and IO = 30 mA, VO ≈ –4.55 V; at 60 mA, VO ≈ –4.1 V. This predictable linear droop is inherent to charge-pump topology and enables accurate rail-splitting and bias design without feedback. The datasheet confirms this behavior in Figure 7-14 (Output Voltage vs Output Current) and Equation 1 in Section 8.3.1 - no regulation loop is present, so accuracy depends solely on input stability and load current knowledge.
Is the TPS60403DBVR pin-compatible with other TPS6040x variants?
Yes, all TPS6040x devices - including TPS60400DBVR, TPS60401DBVR, TPS60402DBVR, and TPS60403DBVR - share identical SOT-23-5 pinout, package dimensions (2.90 mm × 1.60 mm), and terminal functions. Pin 1 is OUT, Pin 2 is IN, Pin 3 is CFLY–, Pin 4 is GND, and Pin 5 is CFLY+. This allows direct substitution in existing layouts when switching between variants - though external capacitor values and performance characteristics (e.g., ripple, IQ, frequency) differ per part number and must be revalidated per application requirements.
TPS60403DBVR 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
TPS60403DBVR FAQ
1.How can I place an order for TPS60403DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60403DBVR 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 TPS60403DBVR reliable?
The price and inventory of TPS60403DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60403DBVR is usually 5 days.
3.What payment methods are accepted for TPS60403DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60403DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60403DBVR?
TPS60403DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60403DBVR 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 TPS60403DBVR?
For technical support, including TPS60403DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60403DBVR requirements.
6.How does Aetrix verify that TPS60403DBVR is sourced from the original manufacturer or authorized distributors?
All TPS60403DBVR 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 TPS60403DBVR meets industry standards.
7.What is the process for return or replacement of TPS60403DBVR?
All TPS60403DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS60403DBVR, 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 TPS60403DBVR part is unused and in its original packaging.
Return procedure for TPS60403DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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