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Texas Instruments TPS60400DBVTG4
- Part No.:
- TPS60400DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60400DBVTG4.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,164
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Product details
Overview
TPS60400DBVTG4 from Texas Instruments is an unregulated charge-pump voltage inverter IC that generates a negative output (–VI) from a 1.6 V to 5.5 V input, delivers up to 60 mA output current, operates with variable switching frequency (50–250 kHz), and requires only three 1-µF ceramic capacitors - used in LCD bias, RF GaAs amplifier bias, and portable sensor supplies.
For engineers reviewing the TPS60400DBVTG4 datasheet, TPS60400DBVTG4 pinout, TPS60400DBVTG4 application, or TPS60400DBVTG4 equivalent, this page provides verified technical context, confirmed pin functions, real-world application constraints, and validated alternative options for low-noise bipolar supply generation in space-constrained battery-powered systems.
Technical Context
The TPS60400DBVTG4 implements a two-phase switched-capacitor inverter topology using internal MOSFET switches (S1–S4) and integrated active Schottky-diode startup circuitry. It operates without regulation, delivering VO ≈ –VI – (IO × RO), where RO ≈ 15 Ω at 25°C and VI = 5 V.
Its variable-frequency oscillator (50–250 kHz) dynamically adjusts to load conditions to minimize quiescent current - typical 65 µA at no load and ≤270 µA at VI = 5 V - improving light-load efficiency over fixed-frequency variants like TPS60401/02/03.
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 preregulated 3.3 V/5 V rails. |
| Output Current | Up to 60 mA - sufficient for biasing LCD segments, RF power amps, or op-amp dual-rail supplies. |
| Switching Frequency | Variable 50–250 kHz - reduces no-load current and enables use of low-value 1-µF flying/output capacitors. |
| Quiescent Current | Typical 65 µA at VI = 5 V, no load - critical for battery life in always-on portable instrumentation. |
| Output Resistance | ≈15 Ω at 25°C, VI = 5 V - determines output droop: VO = –(VI – IO × RO); impacts regulation under load. |
| Capacitor Requirement | Three 1-µF ceramic capacitors (CI, C(fly), CO) - enables full inverter function in <50 mm² board area. |
| Efficiency | >90% typical across 1–60 mA output range - dominated by IQ at light loads, RO at heavy loads. |
Pinout & Package
TPS60400DBVTG4 is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body size), optimized for minimal footprint and thermal performance (RθJA = 221.2 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power output | Delivers inverted negative voltage (VO ≈ –VI); must be bypassed to GND with CO (≥1 µF ceramic). |
| IN (Pin 2) | Supply input | Accepts 1.6–5.5 V input; requires CI bypass capacitor matching C(fly) value to suppress switching noise. |
| CFLY– (Pin 3) | Flying capacitor negative terminal | Connects to negative side of C(fly); forms charge-transfer path during second half-cycle of switching. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and C(fly); critical for low-impedance layout to minimize noise and EMI. |
| CFLY+ (Pin 5) | Flying capacitor positive terminal | Connects to positive side of C(fly); charges to VI during first half-cycle, then drives CO negative. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode startup | Prevents positive output voltage during startup into capacitive or current-sinking loads - eliminates external diode and saves PCB area. |
| PowerSave-mode operation | Reduces quiescent current at light loads via variable-frequency control - extends battery runtime in intermittent-use instruments. |
| Unregulated inverter architecture | Delivers precise –VI inversion without feedback loop - simplifies design, avoids compensation complexity, and minimizes component count. |
| Low-ESR capacitor optimization | Designed for 1-µF ceramic capacitors (X5R/X7R) - achieves <35 mVP-P ripple at 5 mA and maintains RO ≤15 Ω. |
| SOT-23 (5) thermal performance | RθJA = 221.2 °C/W enables 40 mW max dissipation with <10°C junction rise - suitable for sealed enclosures up to 115°C ambient. |
Applications
| LCD Bias Supply | RF GaAs Power Amplifier Bias |
|---|---|
|
Use Scenario: Generating negative gate bias for TFT-LCD segment drivers in handheld medical displays. IC Role / Device Role / Timing Role: Unregulated voltage inverter providing stable –3.3 V to –5 V rail from single 3.3 V or 5 V supply. Use Value: Eliminates need for discrete inductor-based converters; enables <50 mm² total solution size with 1-µF ceramics. |
Use Scenario: Supplying negative VGS bias to GaAs FETs in portable UHF transceivers. IC Role / Device Role / Timing Role: Low-noise, fast-starting inverter delivering –2.5 V to –4.5 V with minimal output droop under pulsed RF load. Use Value: Integrated Schottky startup ensures reliable turn-on into reactive GaAs gate capacitance; variable frequency reduces idle current. |
| Portable Sensor Signal Conditioning | Bipolar Op-Amp Supply for Battery Instruments |
|
Use Scenario: Powering precision analog front-ends (e.g., bridge sensors + instrumentation amps) in handheld gas analyzers. IC Role / Device Role / Timing Role: Dual-rail generator producing symmetric ±2.5 V from 5 V battery, using TPS60400DBVTG4 as negative rail source. Use Value: 65 µA quiescent current preserves battery life during sleep mode; 15 Ω output resistance supports 10 mA sensor bias loads. |
Use Scenario: Creating split supplies for rail-to-rail op-amps in portable oscilloscope probes and EEG monitors. IC Role / Device Role / Timing Role: Compact, low-EMI inverter forming negative rail in conjunction with LDO or resistive divider for positive rail. Use Value: SOT-23-5 footprint allows co-location with op-amp; ceramic capacitor compatibility ensures low output ripple (<35 mVP-P) at 5 mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403DBVT | Fixed 250 kHz switching frequency; higher IQ (425–700 µA); lower output ripple (15 mVP-P at 5 mA). | Better for noise-sensitive analog circuits needing consistent high-frequency filtering; less efficient at light loads. | Select when low output ripple outweighs battery life; verify layout can handle higher switching noise. |
| MAX680ESA+ | Fixed 100 kHz frequency; ±5 V output from 4.5–6.5 V input; requires four external capacitors; SO-8 package. | Higher input voltage requirement limits use with single-cell Li-ion; larger footprint and higher BOM count. | Choose only if existing design uses MAX680 footprint or requires tighter output voltage tolerance (±3% vs unregulated –VI). |
Compared with TPS60403DBVT, TPS60400DBVTG4 trades higher peak ripple for 5× lower no-load current and wider input flexibility; versus MAX680ESA+, it offers smaller size, lower input voltage support, and fewer external components - making it optimal for ultra-compact, multi-cell battery systems.
Availability
TPS60400DBVTG4 is available at Aetrix Electronics and suitable for LCD bias, RF GaAs amplifier bias, and portable sensor supply applications requiring stable component supply, long-lifecycle availability, and traceable sourcing for medical and industrial OEM programs.
Supply support for TPS60400DBVTG4 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 focused on analog, embedded processing, and connectivity technologies, with broad portfolio support for industrial, automotive, and personal electronics.
The TPS6040x product line was designed specifically for compact, low-quiescent-current DC-DC charge-pump inversion in battery-powered instrumentation, portable displays, and RF subsystems - prioritizing minimal external components and SOT-23 integration.
FAQ
What is the exact input voltage range supported by the TPS60400DBVTG4?
The TPS60400DBVTG4 supports an input voltage range of 1.6 V to 5.5 V, enabling direct operation from single Li-ion cells (2.7–4.2 V), two NiMH/alkaline cells (2.4–3.0 V), or three alkaline cells (4.5–5.5 V), as well as standard 3.3 V and 5 V regulated rails. This range is confirmed in Section 7.3 of the official datasheet (SLVS324C, Rev C).
Does the TPS60400DBVTG4 require external diodes for startup?
No, the TPS60400DBVTG4 integrates an active Schottky-diode function for startup into loaded outputs, eliminating the need for an external diode. This feature prevents the output from rising above GND during initial power-up and is explicitly documented in Section 8.4.1 and Figure 8-2 of the TPS60400DBVTG4 datasheet.
What is the typical output resistance of the TPS60400DBVTG4 and how does it affect performance?
The TPS60400DBVTG4 has a typical output resistance (RO) of 15 Ω at 25°C and VI = 5 V, as specified in Section 7.5 Electrical Characteristics. This resistance causes output voltage droop per VO = –(VI – IO × RO), limiting usable load current in precision bias applications - e.g., at 30 mA, VO drops ~0.45 V from ideal –VI.
Can the TPS60400DBVTG4 be used to generate a split ±2.5 V supply from a 5 V source?
Yes, the TPS60400DBVTG4 can generate –2.5 V from a 5 V input to form a bipolar ±2.5 V supply when paired with the original 5 V rail (or a regulated +2.5 V derived from it). Its unregulated –VI output matches the positive rail magnitude, and its 60 mA capability supports moderate op-amp loads - confirmed in Section 9.3 System Examples and Figure 9-4 of the datasheet.
What capacitor values are required for basic operation of the TPS60400DBVTG4?
The TPS60400DBVTG4 requires three 1-µF X5R/X7R ceramic capacitors: one input bypass capacitor (CI), one flying capacitor (C(fly)), and one output filter capacitor (CO). This configuration is validated in Table 9-1 and Figure 9-1 of the datasheet and enables full 60 mA operation with <35 mVP-P ripple at 5 mA output.
TPS60400DBVTG4 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:
- 50kHz ~ 250kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS60400DBVTG4 FAQ
1.How can I place an order for TPS60400DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60400DBVTG4 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 TPS60400DBVTG4 reliable?
The price and inventory of TPS60400DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60400DBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS60400DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60400DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60400DBVTG4?
TPS60400DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60400DBVTG4 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 TPS60400DBVTG4?
For technical support, including TPS60400DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60400DBVTG4 requirements.
6.How does Aetrix verify that TPS60400DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS60400DBVTG4 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 TPS60400DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS60400DBVTG4?
All TPS60400DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS60400DBVTG4, 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 TPS60400DBVTG4 part is unused and in its original packaging.
Return procedure for TPS60400DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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