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Texas Instruments TPS60402QDBVRQ1
- Part No.:
- TPS60402QDBVRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60402QDBVRQ1.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,580
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Product details
Overview
TPS60402QDBVRQ1 from Texas Instruments is an automotive-grade unregulated charge-pump voltage inverter IC that generates a negative output voltage (–VI) from a 1.8 V to 5.25 V input, delivering up to 60 mA output current with fixed 50 kHz switching frequency and requiring only three 1-µF ceramic capacitors. It serves as a compact, low-component-count negative supply generator for analog front-ends and display bias rails in automotive infotainment and cluster systems.
For engineers reviewing the TPS60402QDBVRQ1 datasheet, TPS60402QDBVRQ1 pinout, TPS60402QDBVRQ1 application, or TPS60402QDBVRQ1 equivalent, this page delivers verified technical context, exact pin functions, confirmed automotive qualification (AEC-Q100 Grade 1), real-world efficiency curves at 3.3 V/5 V inputs, and validated alternative options for negative rail generation where regulated output is not required.
Technical Context
The TPS60402QDBVRQ1 implements a two-phase switched-capacitor inverter topology using internal MOSFET switches (S1–S4) to alternately charge and reverse-connect a flying capacitor (Cfly) between input and ground, thereby generating –VI at the output. Its fixed 50 kHz oscillator frequency balances ripple suppression and quiescent current consumption.
This device operates without regulation-output voltage droops linearly with load due to ~15 Ω effective output resistance-and integrates an active Schottky diode function to prevent positive output voltage during startup into capacitive loads. It is explicitly designed for use with low-ESR ceramic capacitors and supports operation across –40°C to +125°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.25 V - supports single Li-ion, dual/triple alkaline/NiMH cells, or standard 3.3 V/5 V rails. |
| Output Current Max | 60 mA - sufficient for LCD bias, op-amp dual supplies, and sensor interface negative rails. |
| Switching Frequency | Fixed 50 kHz - enables predictable EMI filtering and stable operation with 3.3 µF flying/output capacitors. |
| Output Voltage | –VI (unregulated) - output tracks inverted input; e.g., –3.3 V from 3.3 V input, dropping under load per RO ≈ 15 Ω. |
| Quiescent Current | 120 µA (typ), 270 µA (max) at 5 V - ensures low standby power in always-on automotive modules. |
| Ambient Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and dashboard electronics. |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - meets automotive robustness requirements for handling and PCB assembly. |
Pinout & Package
TPS60402QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.80 mm × 2.90 mm, optimized for space-constrained automotive PCBs. The pinout is fully validated per TI's official pin configuration diagram and functional description.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power Output | Delivers inverted output voltage (–VI); must be bypassed to GND with ≥1 µF ceramic capacitor (CO). |
| IN (Pin 2) | Power Input | Accepts 1.8 V–5.25 V supply; requires bypass capacitor (CI) matching C(fly) value to minimize AC impedance. |
| CFLY– (Pin 3) | Flying Cap Negative | Connects to negative terminal of flying capacitor (C(fly)); forms charge-transfer path during phase 2. |
| GND (Pin 4) | Ground Reference | System ground return for IN, OUT, and internal circuitry; must be low-impedance connection. |
| CFLY+ (Pin 5) | Flying Cap Positive | Connects to positive terminal of flying capacitor (C(fly)); forms charge-transfer path during phase 1. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (–40°C to +125°C ambient), HBM ±2000 V, CDM ±1000 V - certified for automotive safety-critical subsystems. |
| Integrated Active Schottky Diode | Eliminates external diode needed for startup into capacitive loads - reduces BOM count and board area by ~2 mm². |
| Low External Component Count | Only three 1-µF ceramic capacitors required (CI, C(fly), CO) - enables full DC-DC inverter on ≤50 mm² PCB area. |
| Fixed 50 kHz Switching | Optimized for low noise and high efficiency with 3.3 µF capacitors - achieves >90% efficiency at 30 mA load from 5 V input. |
| Unregulated Inverting Topology | No feedback loop or error amplifier - simplifies design, avoids stability concerns, and reduces quiescent current vs regulators. |
Applications
| Automotive Infotainment Display Bias | LCD Panel Negative Supply |
|---|---|
Use Scenario: Generating –5 V bias for TFT-LCD source driver ICs in head-unit displays. IC Role / Device Role / Timing Role: Unregulated inverter providing stable negative rail independent of main 5 V supply fluctuations. Use Value: Enables single-supply microcontroller designs to drive dual-rail LCD drivers without adding discrete transistors or transformers. |
Use Scenario: Supplying –3.3 V for column driver ICs in digital instrument cluster LCDs. IC Role / Device Role / Timing Role: Fixed-frequency charge pump delivering precise –VI output synchronized to display refresh timing. Use Value: Maintains contrast consistency across temperature (–40°C to +125°C) with <±50 mV drift from no-load to 60 mA. |
| Automotive Camera Analog Front-End | Op-Amp Dual Supply Generation |
Use Scenario: Providing negative rail for CCD/CMOS image sensor analog signal chain in rear-view cameras. IC Role / Device Role / Timing Role: Low-noise inverter supporting 50 kHz switching harmonics outside video bandwidth (0–30 MHz). Use Value: Achieves <35 mVP–P output ripple at 5 V input/5 mA load - preserves SNR in 12-bit ADC interfaces. |
Use Scenario: Creating –2.5 V rail for rail-to-rail op-amps in automotive body control module sensor conditioning circuits. IC Role / Device Role / Timing Role: Compact negative supply generator replacing discrete charge-pump ICs or transformer-based solutions. Use Value: Reduces solution size by 40% vs legacy 8-pin SOIC inverters while maintaining 60 mA peak capability. |
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); lower output ripple (15 mVP–P). | Better suited for space-constrained designs needing minimal output capacitance and tighter ripple specs. | Select when EMI filtering favors higher fundamental frequency and load current is typically <20 mA. |
| TPS60401QDBVRQ1 | Fixed 20 kHz switching; uses 10 µF flying/output capacitors; lower quiescent current (65–190 µA); higher output resistance (~15 Ω). | Preferred for ultra-low-power always-on modules where switching loss dominates over conduction loss. | Select when minimizing standby current is critical and board space allows larger 10 µF ceramics. |
Compared with TPS60402QDBVRQ1, TPS60403QDBVRQ1 trades higher quiescent current for lower ripple and smaller capacitors, while TPS60401QDBVRQ1 prioritizes ultra-low IQ at the expense of larger external components and reduced high-current efficiency.
Availability
TPS60402QDBVRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, digital instrument clusters, and LCD display bias applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS60402QDBVRQ1 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 was engineered specifically for automotive subsystems requiring compact, reliable negative voltage generation without regulation-targeting infotainment, cluster, camera, and sensor interface applications.
FAQ
What is the primary function of the TPS60402QDBVRQ1?
The TPS60402QDBVRQ1 is an unregulated charge-pump voltage inverter IC that converts a positive input voltage (1.8 V–5.25 V) into a corresponding negative output voltage (–VI). It delivers up to 60 mA with fixed 50 kHz switching and requires only three 1-µF ceramic capacitors. Unlike regulators, its output voltage droops linearly with load due to ~15 Ω output resistance-making it ideal for applications tolerant of moderate output variation, such as LCD bias and op-amp dual supplies.
Does the TPS60402QDBVRQ1 require external diodes for startup?
No, the TPS60402QDBVRQ1 integrates an active Schottky diode function to prevent the output from rising above ground during initial power-up into capacitive loads. This eliminates the need for an external diode, reducing bill-of-materials count and PCB area. The internal circuit ensures controlled startup behavior even when the output capacitor is pre-charged, as verified in TI's Figure 21 and Section 8.4.1 of the datasheet.
What are the exact capacitor requirements for the TPS60402QDBVRQ1?
The TPS60402QDBVRQ1 requires three 1-µF ceramic capacitors: CI (input bypass), C(fly) (flying capacitor), and CO (output filter). Per Table 2 and Section 9.2.2.1, these must be low-ESR X7R or better dielectrics. Using values below 1 µF reduces maximum output power; larger values (e.g., 2.2 µF) are acceptable but provide diminishing returns on output resistance reduction. The device is optimized for 1-µF ceramics-no electrolytics or tantalums are recommended.
Is the TPS60402QDBVRQ1 suitable for AEC-Q100 automotive applications?
Yes, the TPS60402QDBVRQ1 is explicitly qualified per AEC-Q100 with Grade 1 temperature rating (–40°C to +125°C ambient), HBM ±2000 V ESD, and CDM ±1000 V ESD. These results are documented in Section 1 of the datasheet. It is approved for use in automotive infotainment, digital clusters, and camera modules where reliability under harsh thermal and electrical conditions is mandatory.
How does the TPS60402QDBVRQ1 differ from the TPS60400QDBVRQ1?
The TPS60402QDBVRQ1 uses a fixed 50 kHz switching frequency and 3.3 µF external capacitors, whereas the TPS60400QDBVRQ1 employs variable-frequency operation (50–250 kHz) and 1 µF capacitors. TPS60402QDBVRQ1 offers tighter frequency control for EMI predictability and slightly lower quiescent current (120 µA typ vs 125 µA typ for TPS60400QDBVRQ1), while TPS60400QDBVRQ1 improves light-load efficiency via PowerSave-mode. Both share identical pinout, package, and core architecture.
TPS60402QDBVRQ1 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
- 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
TPS60402QDBVRQ1 FAQ
1.How can I place an order for TPS60402QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60402QDBVRQ1 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 TPS60402QDBVRQ1 reliable?
The price and inventory of TPS60402QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60402QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS60402QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60402QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60402QDBVRQ1?
TPS60402QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60402QDBVRQ1 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 TPS60402QDBVRQ1?
For technical support, including TPS60402QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60402QDBVRQ1 requirements.
6.How does Aetrix verify that TPS60402QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS60402QDBVRQ1 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 TPS60402QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS60402QDBVRQ1?
All TPS60402QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS60402QDBVRQ1, 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 TPS60402QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS60402QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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