My Inquiry
My Account
Texas Instruments TPS60400DBVT
- Part No.:
- TPS60400DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS60400DBVT.pdf
- Description:
- IC REG CHG PUMP INV 60MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,055
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS60400DBVT 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 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 TPS60400DBVT datasheet, TPS60400DBVT pinout, TPS60400DBVT application, or TPS60400DBVT equivalent, this page provides verified technical context, confirmed pin functions, real-world application constraints, and validated alternative options for low-power negative rail generation in space-constrained battery-operated systems.
Technical Context
The TPS60400DBVT 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, producing VO ≈ –VI – (IO × RO), where RO ≈ 15 Ω at 25°C with 1-µF capacitors.
Its variable-frequency oscillator (50–250 kHz) dynamically reduces quiescent current under light loads via PowerSave-mode, enabling high efficiency (>90% at 30–60 mA) while maintaining compatibility with small-value flying and output capacitors.
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 external LDO pre-regulation. |
| Output Current | Up to 60 mA - sufficient for biasing LCD segments, RF power amplifiers, or low-power op-amps in portable instruments. |
| Switching Frequency | Variable 50–250 kHz - enables optimization of capacitor size vs. ripple/noise trade-off; avoids fixed-frequency EMI peaks. |
| Quiescent Current | Typical 65 µA at VI = 5 V - ensures minimal battery drain during standby in always-on sensor or medical devices. |
| Output Resistance | ≈15 Ω at 25°C - defines load-dependent voltage droop: VO = –(VI – IO × 15 Ω); critical for precision analog biasing. |
| Capacitor Requirement | Three 1-µF ceramic capacitors (CI, C(fly), CO) - eliminates discrete Schottky diode and reduces board area to ~50 mm². |
| Package | SOT-23 (5-pin), 2.90 mm × 1.60 mm - surface-mount compatible with automated assembly and compact portable PCB layouts. |
Pinout & Package
TPS60400DBVT is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body), optimized for minimal footprint and thermal performance (RθJA = 221.2°C/W).
| 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) to stabilize output and limit ripple. |
| IN (Pin 2) | Supply input | Accepts 1.6–5.5 V input; requires local bypass capacitor (CI = 1 µF) to suppress switching noise and supply impedance effects. |
| CFLY– (Pin 3) | Flying capacitor negative terminal | Connects to negative side of C(fly); forms charge-transfer path during second half-cycle to generate negative output. |
| GND (Pin 4) | Ground reference | Common return for IN, OUT, and C(fly); must be low-impedance plane to minimize noise coupling and ensure stable startup. |
| CFLY+ (Pin 5) | Flying capacitor positive terminal | Connects to positive side of C(fly); charged to VI during first half-cycle, then flipped to drive OUT negative relative to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active Schottky-diode startup | Eliminates external diode, prevents positive output overshoot during cold start into capacitive loads, and guarantees defined turn-on behavior. |
| PowerSave-mode operation | Reduces quiescent current at light loads by lowering switching frequency - extends battery life in intermittent-use portable instrumentation. |
| Unregulated inverter architecture | Delivers precise –VI inversion without feedback loop; simplifies design, avoids compensation complexity, and minimizes component count. |
| Low-output-resistance design | ≈15 Ω typical output impedance enables stable biasing of moderate-current analog circuits (e.g., op-amp dual rails) without excessive droop. |
| Minimal external components | Only three 1-µF ceramic capacitors required - reduces BOM cost, PCB area, and assembly steps versus discrete or inductor-based solutions. |
Applications
| LCD Bias | GaAs RF Power Amp Bias |
|---|---|
|
Use Scenario: Providing negative gate bias voltage for segmented LCD displays in handheld meters and medical monitors. IC Role / Device Role / Timing Role: Unregulated voltage inverter generating –1.8 V to –5.5 V from main system rail to control LCD contrast and segment drive. Use Value: Enables single-supply microcontroller systems to drive passive-matrix LCDs without external DC-DC converters or transformers. |
Use Scenario: Supplying negative gate voltage for GaAs FETs in 2.4 GHz ISM-band RF power amplifiers in portable transceivers. IC Role / Device Role / Timing Role: Charge-pump inverter delivering stable –3 V to –5 V bias under pulsed RF load conditions. Use Value: Maintains consistent FET pinch-off voltage across battery discharge, improving linearity and PAE in battery-powered RF front-ends. |
| Sensor Supply in Portable Instruments | Bipolar Amplifier Supply |
|
Use Scenario: Powering low-noise analog front-end sensors (e.g., piezoresistive pressure, thermopile) in handheld diagnostic tools. IC Role / Device Role / Timing Role: Generating clean negative rail for sensor signal conditioning circuitry requiring dual ±2.5 V or ±3.3 V supplies. Use Value: Achieves <35 mVP-P output ripple with 1-µF ceramics - sufficient for 12-bit ADC input stages without additional filtering. |
Use Scenario: Creating split-rail supply for rail-to-rail op-amps in portable audio codecs and EEG signal amplifiers. IC Role / Device Role / Timing Role: Inverting main 3.3 V rail to –3.3 V, paired with original +3.3 V, to form symmetric ±3.3 V analog supply. Use Value: Supports true bipolar operation with 60 mA peak current - adequate for driving 10 kΩ loads with <1% gain error at full scale. |
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 µA typ); lower output ripple (15 mVP-P) with same 1-µF caps. | Better suited for noise-sensitive analog circuits where predictable EMI and minimal ripple outweigh battery-life concerns. | Select TPS60403DBVT when EMI filtering is impractical and output stability under dynamic load is prioritized over quiescent power. |
| MAX680ESA+ | Fixed 10-kHz frequency; requires four external capacitors; no integrated startup diode; higher output resistance (~30 Ω). | Legacy-compatible replacement where board layout already accommodates larger capacitor footprints and discrete diode. | Choose MAX680ESA+ only for drop-in replacement in existing designs using older MAXIM charge pumps - not recommended for new designs. |
Compared with TPS60400DBVT, TPS60403DBVT trades lower quiescent current for tighter ripple control and fixed-frequency EMI, while MAX680ESA+ lacks integrated startup protection and demands more board area - making TPS60400DBVT optimal for new ultra-compact, battery-sensitive applications requiring adaptive efficiency.
Availability
TPS60400DBVT 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 OEMs.
Supply support for TPS60400DBVT 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 ICs, with decades of expertise in energy-efficient power conversion and precision analog design.
The TPS6040x product line was designed specifically for compact, low-quiescent-current negative rail generation in battery-powered portable electronics - emphasizing minimal external components, integrated startup protection, and wide-input-voltage flexibility.
FAQ
What is the maximum output current capability of the TPS60400DBVT?
The TPS60400DBVT delivers up to 60 mA of continuous output current at the OUT pin under recommended operating conditions (VI = 1.8–5.25 V, TJ ≤ 125°C). At 60 mA load, output voltage droops according to VO = –(VI – IO × RO), where RO ≈ 15 Ω. The device is rated for 80 mA absolute maximum, but sustained operation above 60 mA risks thermal overload given its RθJA of 221.2°C/W.
Does the TPS60400DBVT require an external Schottky diode for startup?
No, the TPS60400DBVT integrates active Schottky-diode functionality to prevent positive output overshoot during initial power-up into capacitive loads. This eliminates the need for an external diode, reduces board area, and ensures reliable startup behavior - a key differentiator versus legacy charge pumps like the MAX680ESA+.
What capacitor values are required for basic operation of the TPS60400DBVT?
The TPS60400DBVT requires exactly three 1-µF X5R/X7R ceramic capacitors: CI (input bypass), C(fly) (flying capacitor), and CO (output filter). All must be placed close to the IC pins per layout guidelines. Using smaller values degrades output current capability and increases ripple; larger values offer diminishing returns unless targeting ultra-low noise with RC/LC post-filters.
How does the variable switching frequency of the TPS60400DBVT improve efficiency?
The TPS60400DBVT's variable-frequency oscillator (50–250 kHz) lowers switching frequency under light loads via PowerSave-mode, directly reducing gate-drive and switching losses. This cuts quiescent current to 65 µA (typ) at no load - significantly extending battery life in intermittently active portable instruments compared to fixed-frequency alternatives like TPS60403DBVT.
Can the TPS60400DBVT generate a regulated negative output voltage?
No, the TPS60400DBVT is an unregulated charge-pump inverter: its output voltage follows VO ≈ –VI – (IO × RO) and varies with input voltage, load current, temperature, and capacitor ESR. For regulation, an external LDO (e.g., TPS7A16) must be added downstream - but doing so negates the TPS60400DBVT's primary advantage of minimal component count and ultra-small footprint.
TPS60400DBVT 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
TPS60400DBVT FAQ
1.How can I place an order for TPS60400DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60400DBVT 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 TPS60400DBVT reliable?
The price and inventory of TPS60400DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60400DBVT is usually 5 days.
3.What payment methods are accepted for TPS60400DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60400DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60400DBVT?
TPS60400DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60400DBVT 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 TPS60400DBVT?
For technical support, including TPS60400DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60400DBVT requirements.
6.How does Aetrix verify that TPS60400DBVT is sourced from the original manufacturer or authorized distributors?
All TPS60400DBVT 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 TPS60400DBVT meets industry standards.
7.What is the process for return or replacement of TPS60400DBVT?
All TPS60400DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS60400DBVT, 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 TPS60400DBVT part is unused and in its original packaging.
Return procedure for TPS60400DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS60400DBVT Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
