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Texas Instruments HPA00483DRBR
- Part No.:
- HPA00483DRBR
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
HPA00483DRBR.pdf
- Description:
- IC REG BOOST 8SON
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Inventory:2,019
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Product details
Overview
HPA00483DRBR from Texas Instruments is a digitally adjustable, high-frequency boost converter IC designed for LCD bias and OLED display power supplies. It operates from 1.8 V to 6 V input, delivers up to 28 V output, integrates a 6-bit DAC for digital voltage programming via CTRL pin, features true shutdown with 0.1 μA quiescent current, and uses peak-current PFM control at up to 1 MHz switching frequency for compact, high-efficiency designs in handheld displays.
For engineers reviewing the HPA00483DRBR datasheet, HPA00483DRBR pinout, HPA00483DRBR application, or HPA00483DRBR equivalent, key selection considerations include its programmable output range (e.g., 16.2–18.9 V @ 10 mA), integrated input switch disconnect during shutdown, 375 mA typical peak current limit, thermal shutdown at ~160°C, and compatibility with small 4.7 μH inductors and ceramic capacitors in space-constrained portable systems.
Technical Context
The HPA00483DRBR implements constant-peak-current pulse-frequency modulation (PFM) control with an internal 1.233 V reference and 375 mA typical current limit. Its regulation relies on feedback voltage comparison against this reference, triggering main switch (Q2) conduction until either peak current or 6 μs maximum on-time is reached.
It integrates dual MOSFET switches: Q1 (input switch, 1–2 Ω rDS(on)) disconnects VIN from L during shutdown, while Q2 (main switch, 400–800 mΩ rDS(on)) drives the inductor. The 6-bit DAC on DO pin (0–1.233 V, 19.6 mV/step) dynamically adjusts FB node voltage via external resistor R3, enabling precise digital output voltage tuning without changing hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 6 V - supports single-cell Li-ion, NiMH, or alkaline battery inputs without pre-regulation. |
| Max Output Voltage | 28 V - sufficient for driving LCD gate drivers or OLED anode supplies in medium-size displays. |
| Switching Frequency | Up to 1 MHz - enables use of compact 4.7 μH inductors and low-ESR ceramic capacitors. |
| DAC Resolution | 6-bit (64 steps) - provides fine-grained digital output adjustment with 19.6 mV step size at DO pin. |
| Peak Switch Current | 375 mA typical - sets maximum energy per cycle; determines inductor saturation and diode current rating. |
| Shutdown Current | 0.1 μA typical - minimizes battery drain during display off-state in portable devices. |
| Feedback Reference | 1.233 V ±25 mV - stable internal bandgap reference used for precision output regulation. |
| Thermal Shutdown | ~160°C junction - protects device under overload or poor PCB thermal design; auto-recovery on cooldown. |
Pinout & Package
HPA00483DRBR is housed in an 8-pin VSON (DRB) package measuring 3.00 mm × 3.00 mm with exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| L | Input switch drain | Connects internal Q1 to external inductor; carries full input current during switch-on phase. |
| VIN | Input supply | Accepts 1.8–6 V DC; powers internal bias circuits and Q1/Q2 gates; requires local 4.7 μF decoupling. |
| DO | DAC output | Drives external R3 to adjust FB voltage; 0–1.233 V range enables digital output voltage scaling. |
| FB | Feedback input | Senses divided output voltage; compares to 1.233 V reference to regulate output via PFM control. |
| GND | Analog ground | Reference for FB, CTRL, DO; must be shorted directly to PGND to minimize noise coupling. |
| CTRL | Enable & programming | Pull high to enable; pull low ≥560 μs to shut down; pulse low 1–60 μs or 140–240 μs to increment/decrement DAC. |
| PGND | Power ground | Return path for high-current SW and L nodes; connects to exposed thermal pad for heat dissipation. |
| SW | Main switch drain | Connects to inductor and Schottky diode anode; switches at up to 1 MHz with 30 V max rating. |
Key Features
| Feature | Design Value |
|---|---|
| Digital output programming | 6-bit DAC on DO pin enables firmware-controlled voltage tuning without hardware changes or external DACs. |
| True shutdown isolation | Internal Q1 opens during shutdown, fully disconnecting VIN from L and preventing output leakage back to battery. |
| PFM peak-current control | Maintains >70% efficiency across 0.1–10 mA load range without compensation components or loop stability concerns. |
| Integrated thermal protection | Auto-shutdown at ~160°C junction temperature prevents damage during sustained overload or poor heatsinking. |
| Small solution footprint | 3 mm × 3 mm VSON package + 4.7 μH inductor + 1 μF output capacitor achieves <15 mm² total board area. |
Applications
| Small LCD Bias Supply | OLED Display Power |
|---|---|
Use Scenario: Powering gate-on/gate-off voltages for 2.4"–3.5" TFT-LCD modules in smartwatches and portable medical devices. IC Role / Device Role / Timing Role: Boost converter generating dual-rail LCD bias (e.g., +18 V AVDD, –7 V VGL) with independent digital adjustment per rail. Use Value: Enables dynamic contrast optimization by adjusting AVDD in real time via microcontroller GPIO pulses on CTRL pin. | Use Scenario: Supplying programmable anode voltage (15–18 V) for monochrome or color OLED panels in barcode scanners and handheld test equipment. IC Role / Device Role / Timing Role: Digitally tuned high-voltage rail generator with fast startup and zero-load quiescent current below 40 μA. Use Value: Extends battery life by reducing no-load consumption to 0.1 μA during screen blanking while retaining instant reactivation. |
| Smartphone Sub-Display | Portable Diagnostic Instrument |
Use Scenario: Driving auxiliary E-ink or segmented LCD status displays in dual-screen smartphones with tight PCB space constraints. IC Role / Device Role / Timing Role: Compact, low-noise boost IC delivering 16.2–18.9 V @ 10 mA with minimal BOM count (1 inductor, 2 caps, 3 resistors). Use Value: Eliminates need for discrete transistor-based charge pumps or larger TSSOP solutions, saving >30% board area. | Use Scenario: Providing stable, digitally trimmed high-voltage bias for photodiode amplifier stages or sensor excitation in battery-powered field diagnostic tools. IC Role / Device Role / Timing Role: Precision-adjustable HV source with thermal fault reporting via PGND current signature and controlled soft-start. Use Value: Ensures measurement repeatability by maintaining output within ±1.5% over temperature via 1.233 V reference and DAC calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61042DRBR | Fixed 18-V output; no DAC or CTRL programming; identical pinout and package. | Requires external resistor network change to alter output; lacks digital sequencing capability. | Select when fixed output simplifies firmware and reduces GPIO usage; same layout but no voltage tuning. |
| MAX17065ETA+ | 2.5–5.5 V input; 28 V max output; I²C interface instead of CTRL pin pulses; 16-pin TDFN. | Supports multi-voltage profiles via register writes; higher pin count and different footprint. | Select when system already uses I²C bus and requires multiple programmable rails; requires PCB redesign. |
Compared with HPA00483DRBR, TPS61042DRBR offers pin-compatible simplicity for static outputs, while MAX17065ETA+ adds I²C configurability at the cost of layout incompatibility-neither is drop-in replaceable, but both serve adjacent design requirements where digital voltage agility or communication integration is prioritized differently.
Availability
HPA00483DRBR is available at Aetrix Electronics and suitable for LCD bias supply, OLED display power, and portable diagnostic instrument applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for HPA00483DRBR 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.
The HPA00483DRBR belongs to TI's TPS6104x family of digitally adjustable boost converters, engineered specifically for space- and power-constrained portable displays requiring programmable high-voltage rails with minimal external components.
FAQ
What is the function of the CTRL pin on the HPA00483DRBR?
The CTRL pin on the HPA00483DRBR serves dual functions: enabling/disabling the device and digitally programming the output voltage. Pulling CTRL high enables operation with soft-start; pulling it low ≥560 μs initiates true shutdown (0.1 μA IQ). Pulses of 1–60 μs or 140–240 μs on CTRL increment or decrement the internal 6-bit DAC, adjusting DO voltage in 19.6 mV steps to tune output voltage dynamically. This eliminates need for external DACs or potentiometers in HPA00483DRBR-based designs.
Does the HPA00483DRBR support true load disconnect during shutdown?
Yes, the HPA00483DRBR supports true load disconnect during shutdown. When CTRL is pulled low for ≥560 μs, the internal input switch (Q1) opens completely, isolating VIN from the inductor (L) and preventing any current flow from the input source to the output. This ensures zero reverse leakage into the output capacitor and eliminates battery drain in always-on portable systems-verified by the 0.1 μA typical shutdown current specification in the HPA00483DRBR datasheet.
What is the maximum achievable output voltage with the HPA00483DRBR?
The HPA00483DRBR supports a maximum output voltage of 28 V, as specified in its absolute maximum ratings and functional description. This limit is constrained by the 30 V maximum SW pin voltage rating and internal circuitry headroom. In practical applications such as LCD bias supplies, typical configured outputs range from 16.2 V to 18.9 V at 10 mA, but the full 28 V capability allows flexibility for higher-voltage OLED anodes or specialized sensor biasing when paired with appropriate external components rated for >28 V.
How does the HPA00483DRBR achieve high efficiency at light loads?
The HPA00483DRBR achieves high efficiency at light loads through its pulse-frequency modulation (PFM) peak-current control architecture. Unlike PWM converters that maintain fixed frequency and vary duty cycle, the HPA00483DRBR reduces switching frequency proportionally as load decreases-fewer switching events per second lower gate drive and diode losses. Combined with 40 μA typical quiescent current and optimized MOSFET rDS(on), this enables >70% efficiency even at 0.1 mA output current, making HPA00483DRBR ideal for battery-powered standby modes.
Can the HPA00483DRBR operate without using the digital programming feature?
Yes, the HPA00483DRBR can operate without digital programming. Leaving the DO pin unconnected and configuring FB with a standard two-resistor divider (R1/R2) results in a fixed output voltage determined solely by VREF (1.233 V) and the resistor ratio. CTRL then functions only as an enable/disable pin-pull high to run, low to shut down. This mode retains all core benefits of the HPA00483DRBR (high efficiency, small footprint, thermal protection) while simplifying firmware and reducing GPIO usage in applications requiring static output voltage.
HPA00483DRBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
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- Topology:
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- Output Type:
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- Number of Outputs:
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- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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HPA00483DRBR FAQ
1.How can I place an order for HPA00483DRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for HPA00483DRBR 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 HPA00483DRBR reliable?
The price and inventory of HPA00483DRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPA00483DRBR is usually 5 days.
3.What payment methods are accepted for HPA00483DRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPA00483DRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPA00483DRBR?
HPA00483DRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPA00483DRBR 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 HPA00483DRBR?
For technical support, including HPA00483DRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPA00483DRBR requirements.
6.How does Aetrix verify that HPA00483DRBR is sourced from the original manufacturer or authorized distributors?
All HPA00483DRBR 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 HPA00483DRBR meets industry standards.
7.What is the process for return or replacement of HPA00483DRBR?
All HPA00483DRBR units undergo pre-shipment inspection (PSI). If there is an issue with HPA00483DRBR, 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 HPA00483DRBR part is unused and in its original packaging.
Return procedure for HPA00483DRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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