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Texas Instruments TPS65111RGEG4
- Part No.:
- TPS65111RGEG4
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65111RGEG4.pdf
- Description:
- IC REG CHRG PUMP LTPS 3OUT 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,010
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Product details
Overview
TPS65111RGEG4 from Texas Instruments is a triple-output charge pump IC designed for LTPS-LCD bias power in compact portable displays. It delivers fixed 5.0 V (16 mA), 9.0 V (2 mA), and −3.0 V (1 mA) outputs from a 2.4–5.5 V input, features autonomous VCC boost control, <5 mV VCC ripple at 5 mA, and sequential power-up/down with internal timing. It targets small-form-factor smart phones and PDAs requiring ultra-low-noise analog supply.
For engineers reviewing the TPS65111RGEG4 datasheet, TPS65111RGEG4 pinout, TPS65111RGEG4 application, or TPS65111RGEG4 equivalent, key selection criteria include verified triple-rail output stability under dynamic load, confirmed 24-pin QFN (RGE) package compatibility, validated shutdown current <1 µA, and documented VCC/VDD/VSS sequencing behavior across −40°C to 85°C ambient.
Technical Context
The TPS65111RGEG4 integrates three independent regulated charge pumps: VCC uses autonomous x1/x1.33/x1.5/x2 boost ratio selection based on VIN and VCC setpoint; VDD employs fixed x2 boost from VCC to deliver 9.0 V; VSS uses fixed x−1 inversion from VCC to generate −3.0 V. All outputs operate in SKIP mode with max 400 kHz switching frequency.
Power sequencing is fully autonomous: VCC rises first, then VSS at 75% of nominal, then VDD; during shutdown, VDD falls first, then VSS at 70%, then VCC. The device draws only 50 µA quiescent current and less than 1 µA in shutdown, with UVLO thresholds of 2.2 V (rising) and 2.0 V (falling).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.4 V to 5.5 V - supports single-cell Li-ion or dual-cell alkaline input without external regulation |
| VCC output | 5.0 V ±1.5%, 16 mA - primary analog rail for LCD source driver, with 5 mV ripple at 5 mA load |
| VDD output | 9.0 V ±3%, 2 mA - positive gate drive voltage for LTPS pixel TFTs, fixed x2 boost from VCC |
| VSS output | −3.0 V ±3%, 1 mA - negative common electrode bias, fixed x−1 inversion from VCC |
| Quiescent current | 50 µA typical - enables >100-hour standby in battery-powered PDA/smartphone display subsystems |
| Shutdown current | <1 µA - preserves battery life during display-off states without external power gating |
| Operating temperature | −40°C to +85°C - qualified for consumer handheld environments with no derating required |
Pinout & Package
TPS65111RGEG4 is housed in a 24-pin VQFN package (RGE), 4 mm × 4 mm, 0.5 mm pitch, with exposed thermal pad. Pin numbering follows top-view layout per SLVS495 Rev. A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 9) | Main power input | Accepts 2.4–5.5 V; feeds all internal charge pumps and logic; requires 4.7 µF ceramic input capacitor |
| VCC (Pin 2) | Primary regulated output | 5.0 V analog supply for LCD source drivers; supplies current to VDD/VSS pumps; requires 2.2 µF output cap |
| VDD (Pin 15) | Secondary positive output | 9.0 V gate drive rail for LTPS TFTs; derived from VCC via fixed x2 charge pump; needs 1.0 µF output cap |
| VSS (Pin 23) | Negative output | −3.0 V common electrode bias; generated by x−1 inversion from VCC; requires 2.2 µF output capacitor |
| EN (Pin 12) | Enable control | Active-high logic input; asserts full power-up sequence when pulled high; pulls all outputs low in shutdown |
| CLK/DATA (Pins 11/10) | I²C interface | Supports configuration of EEPROM-based settings (e.g., VROM power); not used in default fixed-voltage mode |
| PGND/AGND (Pins 22/13) | Ground terminals | Separate power (PGND) and analog (AGND) grounds minimize noise coupling into sensitive VCC rail |
Key Features
| Feature | Design Value |
|---|---|
| Triple regulated charge pump topology | Eliminates need for three discrete DC/DC converters; reduces BOM count and PCB area in space-constrained LTPS displays |
| Autonomous VCC boost ratio selection | Maintains ≥88% efficiency across 2.7–5.5 V input range without firmware or external control signals |
| Ultra-low VCC ripple (5 mV typ) | Prevents visible noise artifacts in high-resolution LTPS-LCD panels; meets stringent analog supply requirements |
| Internal sequential power-up/down | Guarantees safe LCD panel bias sequencing (VCC → VSS → VDD on start; reverse on shutdown) without external timers |
| 24-pin 4×4 mm QFN with thermal pad | Enables high-density layout in <100 mm² display module footprints; thermal pad improves power dissipation at 16 mA load |
Applications
| LTPS-LCD Smart Phone Display | PDA Main Screen Bias |
|---|---|
Use Scenario: Powering 3.5″–4.3″ high-resolution LTPS-LCD in battery-operated smart phone with tight thermal and area constraints. IC Role / Device Role / Timing Role: Single-chip triple-rail bias generator providing VCC (5 V), VDD (9 V), and VSS (−3 V) with autonomous sequencing. Use Value: Replaces three discrete charge pumps and sequencing logic, reducing component count by ≥7 parts and saving >15 mm² PCB area. |
Use Scenario: Supplying bias voltages to VGA-resolution LTPS panel in legacy PDA with 3.7 V Li-ion battery input. IC Role / Device Role / Timing Role: Primary analog power IC delivering stable 5 V VCC rail with <5 mV ripple to prevent image flicker during video playback. Use Value: Achieves 90% peak VCC efficiency at 10 mA load, extending battery runtime by 12% versus older discrete solutions. |
| Portable Media Player LCD | Handheld Navigation Display |
Use Scenario: Driving 480×800 LTPS display in GPS-enabled media player with intermittent backlight use. IC Role / Device Role / Timing Role: Regulated triple-output power manager enabling fast wake-from-standby (<5 ms VCC rise time) and low-quiescent operation. Use Value: 50 µA operating current and <1 µA shutdown current support >2-week standby without recharge. |
Use Scenario: Biasing automotive-grade LTPS display in ruggedized handheld navigation unit operating from 2.8–4.2 V battery. IC Role / Device Role / Timing Role: Robust bias IC maintaining VCC accuracy ±1.5% across −40°C to +85°C with no external compensation. Use Value: Internal UVLO (2.2 V rising threshold) prevents malfunction during cold-cranking voltage dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output LCD bias applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65110RGEG4 | Delivers 3.3 V / 7.5 V / −2.7 V outputs; lower VCC/VDD voltages and tighter VCC accuracy (±1.5% vs ±1.5% same), but reduced VCC current headroom at low VIN | Suitable for 3.3 V LTPS panels with lower gate drive requirements; not drop-in due to different output voltages and VDD boost ratio (x3 vs x2) | Select when panel VDD spec is ≤7.5 V and system VIN rarely exceeds 3.6 V; verify flying capacitor sizing for VCC load step response |
| MAX1677EUE+ | Provides 3.3 V / 5.0 V / −5.0 V; uses inductor-based topology; higher EMI, larger solution size, no integrated sequencing | Requires external timing circuitry for safe power-up; better suited for non-LTPS STN/TFT panels needing deeper negative rail | Choose only if −5.0 V VSS is mandatory and board area allows inductors; avoid for noise-sensitive LTPS where TPS65111RGEG4's 5 mV ripple is critical |
Compared with TPS65110RGEG4, the TPS65111RGEG4 offers higher VCC/VDD rails optimized for modern LTPS gate drivers, while MAX1677EUE+ trades integration and low noise for wider VSS range at the cost of size and EMI compliance effort.
Availability
TPS65111RGEG4 is available at Aetrix Electronics and suitable for smart phone displays, PDA main screens, portable media player LCDs, and handheld navigation displays requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS65111RGEG4 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 over 50 years of innovation in precision power conversion.
The TPS65111RGEG4 belongs to TI's LCD bias power management product line, engineered specifically for space-constrained LTPS-LCD applications demanding ultra-low-noise, sequenced triple-rail outputs in minimal footprint.
FAQ
What is the maximum output current capability of each rail on the TPS65111RGEG4?
The TPS65111RGEG4 delivers up to 16 mA on the VCC rail (5.0 V), 2 mA on the VDD rail (9.0 V), and 1 mA on the VSS rail (−3.0 V) under recommended operating conditions. These values are confirmed in the Electrical Characteristics table of SLVS495, with VCC current specified at IVDD = 2 mA and IVSS = 1 mA. Exceeding these limits may degrade regulation accuracy or increase ripple beyond 5 mV on VCC.
Does the TPS65111RGEG4 require external programming to operate in its default fixed-output mode?
No, the TPS65111RGEG4 operates in default fixed-output mode without external programming. Its VCC, VDD, and VSS voltages are factory-set to 5.0 V, 9.0 V, and −3.0 V respectively. Pins CLK and DATA are only needed if EEPROM-based configuration (e.g., VROM control) is implemented; for standard use, they can be tied low or left unconnected per datasheet guidance.
How does the TPS65111RGEG4 ensure safe power sequencing during startup and shutdown?
The TPS65111RGEG4 executes internal autonomous sequencing: on power-up, VCC rises first; once it reaches 75% of nominal (3.75 V), VSS begins ramping; after VSS hits 75% (−2.25 V), VDD starts. During shutdown, VDD falls first, then VSS at 70% (−2.1 V), then VCC. This behavior is hardwired and requires no external components, ensuring reliable LCD panel bias control in TPS65111RGEG4-based designs.
Can the TPS65111RGEG4 support input voltages below 2.4 V?
No, the absolute minimum input voltage for the TPS65111RGEG4 is 2.4 V per the Recommended Operating Conditions table. Although the UVLO falling threshold is 2.0 V, the device will not regulate properly below 2.4 V. Attempting operation at 2.3 V risks VCC dropout, sequencing failure, and undefined behavior - the TPS65111RGEG4 must be powered within its specified 2.4–5.5 V range.
What is the thermal performance of the TPS65111RGEG4 in its 4×4 mm QFN package?
The TPS65111RGEG4 has a junction-to-ambient thermal resistance (θJA) of 46°C/W, measured per JESD 51−5. With its exposed thermal pad soldered to PCB copper, it sustains full 16 mA VCC load at +85°C ambient without derating. Thermal simulations confirm ≤10°C junction rise above ambient at 10 mA total output current, making it suitable for sealed handheld enclosures without forced airflow.
TPS65111RGEG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Charge Pump, LTPS LCD
- Voltage - Input:
- 2.4V ~ 5.5V
- Number of Outputs:
- 3
- Voltage - Output:
- -3V, 5V, 9V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS65111RGEG4 FAQ
1.How can I place an order for TPS65111RGEG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65111RGEG4 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 TPS65111RGEG4 reliable?
The price and inventory of TPS65111RGEG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65111RGEG4 is usually 5 days.
3.What payment methods are accepted for TPS65111RGEG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65111RGEG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65111RGEG4?
TPS65111RGEG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65111RGEG4 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 TPS65111RGEG4?
For technical support, including TPS65111RGEG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65111RGEG4 requirements.
6.How does Aetrix verify that TPS65111RGEG4 is sourced from the original manufacturer or authorized distributors?
All TPS65111RGEG4 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 TPS65111RGEG4 meets industry standards.
7.What is the process for return or replacement of TPS65111RGEG4?
All TPS65111RGEG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65111RGEG4, 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 TPS65111RGEG4 part is unused and in its original packaging.
Return procedure for TPS65111RGEG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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