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Texas Instruments TPS60400DBVR
- Part No.:
- TPS60400DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60400DBVR.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,615
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Product details
Overview
TPS60400DBVR from Texas Instruments is an unregulated charge-pump voltage inverter IC that generates a negative output (–VI) from 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, GaAs RF amplifier bias, and portable sensor supplies.
For engineers reviewing the TPS60400DBVR datasheet, TPS60400DBVR pinout, TPS60400DBVR application, or TPS60400DBVR 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 TPS60400DBVR implements a two-phase switched-capacitor inverter topology using internal MOSFET switches (S1–S4) to alternately charge and reverse-connect a flying capacitor (CFLY), delivering inverted output voltage VO ≈ –VI. Its variable-frequency oscillator dynamically adjusts between 50 kHz and 250 kHz based on load current to reduce quiescent consumption at light loads.
It integrates an active Schottky-diode function for reliable startup into precharged loads, eliminating external diode requirements. Output regulation is unregulated: VO droops linearly with load per VO = –(VI – RO × IO), where RO ≈ 15 Ω at 25°C and VI = 5 V.
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 fixed 3.3 V/5 V rails without LDO pre-regulation. |
| Output Current | Up to 60 mA - sufficient for biasing LCD segments, RF power amps, or op-amp dual-rail supplies in portable instruments. |
| Switching Frequency | Variable 50–250 kHz - enables optimization of efficiency vs. capacitor size and EMI across wide load ranges. |
| Quiescent Current | Typical 65 µA at VI = 5 V - ensures ultra-low standby power in battery-critical applications like medical handhelds. |
| Output Resistance | ≈15 Ω at 25°C - defines output voltage droop under load; e.g., 30 mA load causes ~0.45 V deviation from ideal –VI. |
| Capacitor Requirement | Three 1-µF ceramic capacitors (CI, CFLY, CO) - minimizes board area (<50 mm²) and eliminates electrolytics or tantalums. |
| Package | SOT-23-5 (2.90 mm × 1.60 mm) - surface-mount, thermally efficient package compatible with high-density PCB layouts. |
Pinout & Package
TPS60400DBVR is housed in a 5-pin SOT-23 package (DBV), with exposed pad not electrically connected. Pin numbering follows standard top-view orientation (pin 1 at dot corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power output | Delivers inverted voltage VO ≈ –VI; must be bypassed to GND with CO (1 µF ceramic); connects to load return path. |
| IN (Pin 2) | Supply input | Accepts 1.6–5.5 V input; requires CI bypass capacitor (1 µF) to suppress switching noise and stabilize source impedance. |
| CFLY– (Pin 3) | Flying capacitor negative terminal | Connects to negative side of C(fly); forms charge-transfer node during phase-2 inversion cycle. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and internal circuitry; must be low-impedance plane for stable operation and EMI control. |
| CFLY+ (Pin 5) | Flying capacitor positive terminal | Connects to positive side of C(fly); serves as charge reservoir during phase-1 charging and phase-2 inversion. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode startup | Prevents output overshoot during cold-start into precharged loads - eliminates discrete diode, saves 1 mm² board area. |
| PowerSave-mode frequency scaling | Reduces switching frequency at light loads to cut IQ by >50% versus fixed-frequency variants - extends battery life in intermittent-use devices. |
| Low-output-resistance architecture | 15 Ω typical output resistance enables stable –4.5 V @ 30 mA from 5 V input - suitable for precision analog biasing. |
| Minimal external component count | Only three 1-µF ceramic caps required - reduces BOM cost, assembly steps, and failure points versus inductor-based inverters. |
| Wide temperature operation | Specified from –40°C to +125°C junction - supports deployment in industrial sensors and automotive cabin electronics. |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Biasing segmented LCD displays in handheld medical meters powered by two AA batteries. IC Role / Device Role / Timing Role: Generates stable –3.0 V rail from 3.0 V nominal input to establish LCD common electrode voltage. Use Value: Enables full-contrast display operation down to 2.4 V battery voltage while consuming <100 µA quiescent current. |
Use Scenario: Supplying negative gate bias to GaAs FETs in portable RF front-ends for IoT transceivers. IC Role / Device Role / Timing Role: Provides clean –5 V bias from 5 V system rail to set optimal FET pinch-off point and linearity. Use Value: Delivers 60 mA peak current with <35 mVpp ripple (at 5 mA load), preserving RF amplifier SNR and gain flatness. |
| Application 3 | Application 4 |
Use Scenario: Creating split ±2.5 V supplies for rail-to-rail op-amps in portable data acquisition modules. IC Role / Device Role / Timing Role: Inverts +2.5 V reference to generate matched –2.5 V rail, forming bipolar supply with minimal layout asymmetry. Use Value: Achieves <1% output matching error between rails using identical 1-µF ceramic caps - critical for DC-coupled sensor signal chains. |
Use Scenario: Powering analog front-end circuits in battery-operated environmental sensors (e.g., gas detectors). IC Role / Device Role / Timing Role: Supplies –4.2 V to precision ADC reference buffers and transimpedance amplifiers requiring negative headroom. Use Value: Maintains <15 Ω effective source impedance across –40°C to +85°C - ensures consistent offset and gain calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403DBVR | Fixed 250-kHz switching frequency; higher IQ (425 µA typ); lower output ripple (15 mVpp at 5 mA). | Better suited for noise-sensitive analog circuits where consistent high-frequency filtering simplifies EMI mitigation. | Select when low output ripple outweighs battery life; avoid in intermittent-load systems due to higher no-load current. |
| TPS60402DBVR | Fixed 50-kHz frequency; 3.3-µF capacitor requirement; 120 µA typ IQ; moderate ripple (20 mVpp). | Optimized for medium-current, cost-sensitive designs where capacitor cost and board area are secondary to efficiency at mid-load. | Choose for 3.3 V–5 V systems needing balanced performance; not recommended for sub-2 V battery start-up due to higher minimum VI. |
Compared with TPS60400DBVR, TPS60403DBVR trades higher quiescent current for lower ripple and fixed timing, while TPS60402DBVR offers lower capacitor cost at the expense of frequency flexibility - making TPS60400DBVR the optimal choice for dynamic-load, battery-limited applications requiring adaptive efficiency.
Availability
TPS60400DBVR is available at Aetrix Electronics and suitable for LCD bias, GaAs RF amplifier bias, and portable sensor supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for medical and industrial OEM programs.
Supply support for TPS60400DBVR 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 and precision power solutions.
The TPS6040x family was designed specifically for compact, low-noise, unregulated voltage inversion in battery-powered instrumentation - prioritizing minimal external components, wide input range, and robust startup behavior over closed-loop regulation.
FAQ
What is the maximum output current capability of the TPS60400DBVR?
The TPS60400DBVR delivers up to 60 mA of continuous output current at the OUT pin under recommended operating conditions (VI = 1.8 V to 5.25 V, TJ ≤ 125°C). At 60 mA load and 5 V input, output voltage typically drops to approximately –4.4 V due to its 15 Ω output resistance. The device is not rated for sustained 80 mA operation, as specified in absolute maximum ratings but outside functional limits.
Does the TPS60400DBVR require an external Schottky diode for startup?
No, the TPS60400DBVR integrates an active Schottky-diode function to manage startup into precharged loads - eliminating the need for an external diode. This internal circuit prevents the output from rising above GND during initial power application, ensuring safe and repeatable startup behavior in systems with capacitive or op-amp loads, as confirmed in Section 8.4.1 of the official datasheet.
What capacitor values are mandatory for stable operation of the TPS60400DBVR?
The TPS60400DBVR requires exactly three 1-µF X5R/X7R ceramic capacitors: one input bypass cap (CI), one flying capacitor (CFLY), and one output filter cap (CO). These values are specified in Table 9-1 and Figure 9-1 of the datasheet. Using smaller values degrades output resistance and power capability; larger values provide diminishing returns and may increase cost and board area without functional benefit.
How does the variable switching frequency of the TPS60400DBVR improve efficiency?
The TPS60400DBVR's variable-frequency oscillator scales from 50 kHz to 250 kHz inversely with load current: at light loads (<5 mA), it operates near 50 kHz to minimize switching losses and quiescent current (65 µA typ); at full 60 mA load, it rises to ~250 kHz to maintain low output impedance. This adaptive behavior improves average efficiency across wide dynamic ranges - unlike fixed-frequency variants such as TPS60402DBVR or TPS60403DBVR.
Can the TPS60400DBVR operate from a single 1.6-V alkaline cell?
Yes, the TPS60400DBVR is explicitly rated for input voltages as low as 1.6 V, enabling direct operation from a single alkaline or NiMH cell. At 1.6 V input, it delivers up to –1.6 V output at reduced current (≤20 mA typical), maintaining functionality through end-of-life battery discharge - a key advantage over higher-VI-only inverters like TPS60401DBVR (min 1.8 V).
TPS60400DBVR 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:
- 50kHz ~ 250kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS60400DBVR FAQ
1.How can I place an order for TPS60400DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60400DBVR 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 TPS60400DBVR reliable?
The price and inventory of TPS60400DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60400DBVR is usually 5 days.
3.What payment methods are accepted for TPS60400DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60400DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60400DBVR?
TPS60400DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60400DBVR 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 TPS60400DBVR?
For technical support, including TPS60400DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60400DBVR requirements.
6.How does Aetrix verify that TPS60400DBVR is sourced from the original manufacturer or authorized distributors?
All TPS60400DBVR 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 TPS60400DBVR meets industry standards.
7.What is the process for return or replacement of TPS60400DBVR?
All TPS60400DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS60400DBVR, 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 TPS60400DBVR part is unused and in its original packaging.
Return procedure for TPS60400DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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