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Texas Instruments TPS60400QDBVRQ1
- Part No.:
- TPS60400QDBVRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60400QDBVRQ1.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,903
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Product details
Overview
TPS60400QDBVRQ1 from Texas Instruments is an automotive-grade unregulated charge-pump voltage inverter IC that generates a negative output (–VI) from a 1.8 V to 5.25 V input, delivering up to 60 mA output current with only three 1-µF ceramic capacitors. It features variable switching frequency (50–250 kHz), integrated active Schottky-diode startup circuitry, and operates across –40°C to +125°C ambient temperature for automotive infotainment and LCD bias supplies.
For engineers reviewing the TPS60400QDBVRQ1 datasheet, TPS60400QDBVRQ1 pinout, TPS60400QDBVRQ1 application, or TPS60400QDBVRQ1 equivalent, key selection criteria include its unregulated inverting topology, AEC-Q100 Grade 1 qualification, quiescent current of 125–270 µA, output resistance of ~15 Ω, and compatibility with low-ESR 1-µF ceramic flying/output capacitors.
Technical Context
The TPS60400QDBVRQ1 implements a two-phase switched-capacitor inverter using internal MOSFET switches (S1–S4) to alternately charge and reverse-connect a flying capacitor (Cfly) between IN and GND/OUT nodes. Its variable-frequency oscillator adapts switching rate (50–250 kHz) to load conditions, reducing quiescent current at light loads while maintaining efficiency above 90% across 1–60 mA output range.
Unlike regulated inverters, it provides no feedback control - output voltage follows VO ≈ –VI – IO × RO, where RO ≈ 15 Ω at 25°C and 5 V input. Startup is enabled by integrated active Schottky-diode circuitry, eliminating external diode requirements and ensuring reliable turn-on into capacitive or current-sink loads typical in LCD column drivers and op-amp dual-rail supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.25 V - supports single Li-ion, 2–3 alkaline/NiMH cells, or pre-regulated 3.3 V/5 V rails |
| Output Current Max | 60 mA - sufficient for biasing LCD segment drivers, op-amp negative rails, or sensor interface circuits |
| Switching Frequency | 50 kHz to 250 kHz (variable) - dynamically optimizes efficiency across wide load range without external programming |
| Quiescent Current | 125 µA (typ), 270 µA (max) at 5 V - enables ultra-low-power operation in always-on automotive modules |
| Output Resistance | ~15 Ω at 25°C, 5 V input - defines load regulation: e.g., 30 mA load causes ~0.45 V droop from ideal –VI |
| Ambient Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and dashboard electronics |
| Capacitor Requirement | Three 1-µF ceramic capacitors (CIN, Cfly, COUT) - enables compact 50-mm² layout in SOT-23 package |
Pinout & Package
TPS60400QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.80 mm × 2.90 mm, optimized for space-constrained automotive PCBs. Thermal resistance is RθJA = 221.2°C/W (unsoldered) and ~180°C/W on typical EVM layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power output | Delivers inverted voltage VO ≈ –VI; requires 1-µF ceramic bypass to GND (CO) |
| IN (Pin 2) | Supply input | Accepts 1.8–5.25 V input; must be bypassed to GND with 1-µF capacitor (CI) |
| CFLY– (Pin 3) | Flying cap negative terminal | Connects to negative side of 1-µF flying capacitor; internal switch node during phase reversal |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and flying capacitor; critical for noise control and thermal path |
| CFLY+ (Pin 5) | Flying cap positive terminal | Connects to positive side of 1-µF flying capacitor; internal switch node during charging phase |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode startup | Eliminates need for external diode, prevents positive output excursion during power-up, saves board area |
| Variable-frequency oscillator | Reduces quiescent current at light loads while maintaining high efficiency (>90%) across full 1–60 mA range |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation, HBM ±2 kV, CDM ±1 kV - suitable for front-end infotainment and cluster systems |
| Low-component-count design | Only three 1-µF ceramic capacitors required - enables minimal BOM, rapid prototyping, and high reliability |
| Unregulated inverting architecture | Provides predictable VO = –VI relationship with known output resistance (~15 Ω), simplifying system-level compensation |
Applications
| Automotive Infotainment Display Bias | LCD Segment Driver Supply |
|---|---|
Use Scenario: Powering negative rail for TFT-LCD source driver ICs in head-unit displays. IC Role / Device Role / Timing Role: Unregulated voltage inverter generating –3.3 V or –5 V from 3.3 V or 5 V main rail. Use Value: Enables single-supply microcontroller to drive dual-rail LCD drivers without discrete DC-DC converter complexity. | Use Scenario: Providing negative bias for passive-matrix LCD segment electrodes in instrument clusters. IC Role / Device Role / Timing Role: Charge-pump inverter supplying stable –2.5 V to –5 V at ≤30 mA for multiplexed segment voltage swing. Use Value: Maintains contrast ratio across temperature via low-output-resistance design (15 Ω), minimizing voltage droop during segment activation bursts. |
| Op-Amp Dual-Rail Interface | Automotive Camera Sensor Bias |
Use Scenario: Generating negative supply for rail-to-rail op-amps in analog signal conditioning front-ends. IC Role / Device Role / Timing Role: Inverting charge pump delivering –2.5 V from 2.5 V or –3.3 V from 3.3 V system rail. Use Value: Supports true bipolar input/output swing in camera ISP analog chains without adding transformer-based isolation or extra LDOs. | Use Scenario: Biasing CCD/CMOS image sensor substrate or analog front-end components requiring negative voltage. IC Role / Device Role / Timing Role: Compact, AEC-Q100-compliant inverter providing –3 V at 10–20 mA for sensor pixel reset or ADC reference. Use Value: Meets automotive EMC and thermal requirements in tight camera module envelopes due to SOT-23 footprint and low EMI ceramic-capacitor solution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403QDBVRQ1 | Fixed 250-kHz switching frequency; higher quiescent current (425–700 µA); same 1-µF capacitor requirement | Better high-frequency ripple suppression but less efficient at light loads; suited for fixed-noise-frequency EMI filtering | Select when deterministic switching frequency is required for spectral shaping, not when ultra-low IQ is critical |
| MAX680EPA+ | Industrial-grade (not AEC-Q100); fixed 10-kHz frequency; requires larger 10-µF flying capacitor; higher output resistance (~25 Ω) | Limited to non-automotive applications; lower efficiency at >20 mA; larger board footprint | Choose only for legacy industrial designs where AEC-Q100 compliance is unnecessary and cost is primary |
Compared with TPS60403QDBVRQ1 and MAX680EPA+, the TPS60400QDBVRQ1 offers superior light-load efficiency via variable frequency, automotive qualification, and minimal 1-µF capacitor count - making it optimal for modern infotainment and cluster systems demanding size, reliability, and dynamic power optimization.
Availability
TPS60400QDBVRQ1 is available at Aetrix Electronics and suitable for automotive infotainment displays, instrument cluster LCD biasing, and op-amp dual-rail interfaces requiring stable component supply with AEC-Q100 traceability and long-term production support.
Supply support for TPS60400QDBVRQ1 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 automotive ICs, with decades of expertise in power management innovation.
The TPS6040x-Q1 product line delivers AEC-Q100-qualified unregulated charge-pump inverters for automotive display and sensor biasing, emphasizing minimal external components, wide input range, and robust startup behavior in harsh environments.
FAQ
What is the maximum output current capability of the TPS60400QDBVRQ1?
The TPS60400QDBVRQ1 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 = –40°C to +125°C). This rating assumes proper thermal management and use of 1-µF ceramic capacitors for CIN, Cfly, and COUT. At higher loads, output voltage droop increases linearly per the device's ~15 Ω output resistance, and junction temperature must remain below 150°C.
Does the TPS60400QDBVRQ1 require external diodes for startup?
No, the TPS60400QDBVRQ1 integrates active Schottky-diode circuitry to manage startup into capacitive or current-sink loads, eliminating the need for an external diode. This feature ensures the output remains safely below GND during initial power application and prevents reverse current flow from the load, which is critical for reliable operation in LCD and op-amp bias applications.
What capacitor values are mandatory for stable operation of the TPS60400QDBVRQ1?
The TPS60400QDBVRQ1 requires three 1-µF X7R or better ceramic capacitors: one input bypass capacitor (CIN) between IN and GND, one flying capacitor (Cfly) between CFLY+ and CFLY–, and one output filter capacitor (COUT) between OUT and GND. These values are specified in TI's recommended design and ensure ≤35 mVP–P ripple at 5 mA load and optimal output resistance of ~15 Ω.
How does the variable switching frequency of the TPS60400QDBVRQ1 improve system efficiency?
The TPS60400QDBVRQ1's variable-frequency oscillator (50–250 kHz) reduces switching losses and quiescent current at light loads, improving overall efficiency in dynamic automotive applications. Unlike fixed-frequency variants, it avoids unnecessary high-frequency switching when output current is low (e.g., display standby), extending battery life and lowering thermal stress without compromising performance at full 60 mA load.
Is the TPS60400QDBVRQ1 compatible with standard SOT-23 PCB footprints?
Yes, the TPS60400QDBVRQ1 uses the industry-standard 5-pin SOT-23 (DBV) package with 2.80 mm × 2.90 mm body dimensions and 0.95 mm height. Its pinout (OUT, IN, CFLY–, GND, CFLY+) matches JEDEC MO-178AC, enabling drop-in replacement in existing layouts designed for compatible charge-pump ICs - provided thermal and capacitor layout guidelines are followed per TI's TPS60400EVM-178 reference design.
TPS60400QDBVRQ1 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS60400QDBVRQ1 FAQ
1.How can I place an order for TPS60400QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60400QDBVRQ1 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 TPS60400QDBVRQ1 reliable?
The price and inventory of TPS60400QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60400QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS60400QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60400QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60400QDBVRQ1?
TPS60400QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60400QDBVRQ1 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 TPS60400QDBVRQ1?
For technical support, including TPS60400QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60400QDBVRQ1 requirements.
6.How does Aetrix verify that TPS60400QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS60400QDBVRQ1 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 TPS60400QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS60400QDBVRQ1?
All TPS60400QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS60400QDBVRQ1, 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 TPS60400QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS60400QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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