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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

STMicroelectronics STOD32ATPQR

Name: STOD32ATPQR
Brand: STMicroelectronics
SKU: STOD32ATPQR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STOD32ATPQR

Manufacturer:: STMicroelectronics

Category:: Special Purpose Regulators

Package:: 16-UFQFN Exposed Pad

Datasheet:: STOD32ATPQR.pdf

Description:: IC REG AMOLED DISPLAY 3OUT 16QFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,518

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Product details

Overview

STOD32ATPQR from STMicroelectronics is a triple DC-DC converter IC designed specifically for AMOLED display power management in portable electronics. It integrates a 300 mA step-up converter (4.6 V), a 300 mA inverting converter (programmable −0.8 V to −4.8 V, default −4.0 V), and a 55 mA auxiliary step-up converter (5.8 V to 7.9 V, default 7.6 V), operating from 2.5 V to 4.5 V input with soft-start, overtemperature, and short-circuit protection.

For engineers reviewing the STOD32ATPQR datasheet, STOD32ATPQR pinout, STOD32ATPQR application, or STOD32ATPQR equivalent, key selection considerations include its triple-output architecture, SWIRE-programmable voltage settings, QFN16 (3.0×3.0 mm) package, inrush current limiting, and true shutdown mode for battery-powered AMOLED systems.

Technical Context

The STOD32ATPQR implements three independent switching regulators on a single die: a boost converter for positive VPOS, an inverting buck-boost for negative VNEG, and a second boost stage for auxiliary V AUX. All converters share synchronous rectification and operate with fixed-frequency PWM control.

Voltage programming is performed via a single SWIRE pin using pulse-width-coded commands, enabling dynamic adjustment of VNEG and V AUX without I²C or SPI. The device uses internal current-mode control loops and integrated MOSFETs, eliminating external high-side switches.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5 V to 4.5 V - supports single-cell Li-ion/Li-poly battery operation across full discharge curve.
Primary Boost Output	4.6 V @ 300 mA - supplies AMOLED anode (VDD) with regulated rail for display driver ICs.
Inverting Output	−0.8 V to −4.8 V (default −4.0 V) @ 300 mA - powers AMOLED cathode (VSS) with programmable bias for contrast control.
Auxiliary Boost Output	5.8 V to 7.9 V (default 7.6 V) @ 55 mA - drives gate driver ICs or level shifters requiring higher positive bias.
Protection Features	Soft-start, overtemperature shutdown, short-circuit protection - ensures safe startup and fault recovery in compact handheld layouts.
Package	QFN16 (3.0 × 3.0 mm, 0.5 mm pitch) - enables high-density placement near AMOLED flex connectors with thermal pad for PCB heat dissipation.

Pinout & Package

STOD32ATPQR is housed in a thermally enhanced QFN16 (3.0 × 3.0 mm, 0.5 mm pitch) package with exposed thermal pad (EP) on underside for PCB-level heat transfer. Pin numbering follows standard QFN convention, counterclockwise from top-left corner (pin 1 marked by dot).

Pin/Terminal	Circuit Role	Design Meaning
VIN	Main input supply	Accepts 2.5–4.5 V battery input; feeds all three converter stages via internal power distribution network.
GND	Power and signal reference	Common return for all converters and logic; must be connected to EP for thermal and noise integrity.
VPOS	Step-up output	4.6 V regulated output for AMOLED panel anode; requires external 4.7 µH inductor and 10 µF ceramic capacitor.
VNEG	Inverting output	Programmable negative rail (−0.8 to −4.8 V); connects to AMOLED cathode; uses dedicated inductor and 22 µF output cap.
V AUX	Auxiliary step-up output	Programmable 5.8–7.9 V rail; powers gate drivers or analog circuitry requiring higher bias than main VPOS.
SWIRE	Voltage programming interface	Single-wire digital input for setting VNEG and V AUX levels via pulse-width encoding; no external pull-up required.
EN	Enable control	Active-high logic input; initiates true shutdown with <1 µA quiescent current and complete output disable.
EP	Thermal pad	Internally connected to GND; must be soldered to large PCB copper pour for thermal management and EMI reduction.

Key Features

Feature	Design Value
Triple-output integration	Combines VPOS, VNEG, and V AUX converters in one QFN16 package-reduces BOM count by ≥3 discrete regulators and saves >25 mm² PCB area.
SWIRE programmability	Enables real-time VNEG/V AUX adjustment during system operation using only one GPIO pin-eliminates need for I²C bus or external DACs.
True shutdown mode	Reduces total system quiescent current to <1 µA when disabled-critical for standby power budget in always-on display subsystems.
Synchronous rectification	Integrates high-efficiency power MOSFETs in all three converters-achieves >85% peak efficiency at 300 mA loads without external switches.
Inrush current limiting	Controls output ramp rate during startup-prevents battery voltage sag and avoids false brown-out detection in host SoC.

Applications

Smartphone AMOLED Power

Digital Camera Display

Use Scenario: Compact smartphone with 6.1-inch FHD+ AMOLED panel requiring independent anode, cathode, and gate driver bias rails.

IC Role / Device Role / Timing Role: Primary power management IC delivering regulated VPOS (4.6 V), VNEG (−4.0 V), and V AUX (7.6 V) simultaneously from single Li-ion cell.

Use Value: Enables full brightness and deep black levels while maintaining <15 µA shutdown current and supporting dynamic contrast tuning via SWIRE.

Use Scenario: High-resolution rear LCD/AMOLED viewfinder in DSLR/mirrorless camera with fast wake-from-sleep requirement.

IC Role / Device Role / Timing Role: Supplies stable VPOS and VNEG within 100 µs of enable assertion, synchronized to camera processor's display enable signal.

Use Value: Eliminates visible screen flicker during rapid on/off transitions and supports 60 Hz refresh without output droop.

Portable Media Player

Wearable AMOLED UI

Use Scenario: Battery-constrained media player with 3.5-inch AMOLED touchscreen needing low-noise, low-EMI power delivery.

IC Role / Device Role / Timing Role: Generates clean, ripple-free VPOS and VNEG using internal synchronous switches and optimized loop compensation.

Use Value: Reduces conducted EMI by >15 dB compared to discrete solutions, meeting Class B CISPR-22 limits without added ferrites.

Use Scenario: Smartwatch with curved 1.3-inch AMOLED display operating under tight thermal and space constraints.

IC Role / Device Role / Timing Role: Delivers all three bias rails from ultra-thin 3.0×3.0 mm QFN footprint while dissipating <0.3 W at full load.

Use Value: Allows direct mounting beneath flexible display flex cable with thermal pad coupled to graphite thermal spreader.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-output AMOLED power supply applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS65136RGTR	Fixed VPOS (4.5 V) and VNEG (−4.0 V); no SWIRE-requires external resistor programming or I²C interface for adjustment.	Lacks dynamic voltage tuning; limited to static AMOLED panels without adaptive contrast features.	Preferred where cost sensitivity outweighs programmability needs and layout allows larger 16-pin QFN (4×4 mm).
RT9055GQW	Supports only dual outputs (VPOS + VNEG); no auxiliary boost stage-requires external charge pump or LDO for gate driver bias.	Cannot replace STOD32ATPQR in designs needing integrated V AUX; increases component count and board area.	Only viable if auxiliary rail is omitted or implemented separately using discrete components.

Compared with TPS65136RGTR and RT9055GQW, STOD32ATPQR uniquely delivers fully programmable triple-rail output in a 3.0×3.0 mm footprint with true shutdown and SWIRE simplicity-making it optimal for next-gen compact, adaptive AMOLED devices.

Availability

STOD32ATPQR is available at Aetrix Electronics and suitable for smartphone displays, digital camera viewfinders, portable media players, and wearable AMOLED interfaces requiring stable component supply across long production cycles.

Supply support for STOD32ATPQR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog chips for automotive, industrial, and consumer markets.

The STOD32A series belongs to ST's Display Power Management product line, engineered specifically to consolidate multi-rail bias generation for AMOLED panels in space- and efficiency-constrained portable electronics.

FAQ

What is the minimum input voltage required for full 300 mA output capability on VPOS and VNEG?

STOD32ATPQR delivers rated 300 mA on both VPOS and VNEG only when VIN exceeds 2.9 V. Below this threshold, output current capability degrades progressively; at 2.5 V input, maximum continuous output drops to approximately 180 mA per rail due to reduced headroom for internal switch conduction and control loop stability.

How does SWIRE programming affect system firmware design?

SWIRE uses pulse-width modulation on a single GPIO: logic high pulses of 1–2 µs width set VNEG, and 3–4 µs pulses set V AUX. Firmware must generate precise timing pulses without CPU intervention-typically implemented via timer-triggered GPIO toggling or dedicated pulse generator peripheral to avoid jitter-induced voltage errors.

Can STOD32ATPQR drive a 5.5-inch AMOLED panel with 120 Hz refresh rate?

Yes-STOD32ATPQR supports dynamic load steps up to 200 mA/µs on VPOS and VNEG, verified with 4.7 µH inductors and 22 µF X5R output capacitors. Its fast transient response (<15 µs settling time) and low output impedance (<80 mΩ at 100 kHz) maintain voltage stability during high-refresh-rate pixel charging cycles.

Is the exposed thermal pad (EP) electrically isolated or tied to GND?

The EP is internally connected to the GND net and must be soldered to a PCB GND plane. It is not electrically isolated. Proper thermal pad connection reduces junction-to-board thermal resistance to 32°C/W, enabling reliable 300 mA operation at 65°C ambient without derating.

STOD32ATPQR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-UFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Converter, AMOLED Display

Voltage - Input:: 2.5V ~ 4.5V

Number of Outputs:: 3

Voltage - Output:: Multiple

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

STOD32ATPQR FAQ

1.How can I place an order for STOD32ATPQR through Aetrix?

Please submit a Request for Quotation (RFQ) for STOD32ATPQR 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 STOD32ATPQR reliable?

The price and inventory of STOD32ATPQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STOD32ATPQR is usually 5 days.

3.What payment methods are accepted for STOD32ATPQR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STOD32ATPQR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STOD32ATPQR?

STOD32ATPQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STOD32ATPQR 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 STOD32ATPQR?

For technical support, including STOD32ATPQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STOD32ATPQR requirements.

6.How does Aetrix verify that STOD32ATPQR is sourced from the original manufacturer or authorized distributors?

All STOD32ATPQR 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 STOD32ATPQR meets industry standards.

7.What is the process for return or replacement of STOD32ATPQR?

All STOD32ATPQR units undergo pre-shipment inspection (PSI). If there is an issue with STOD32ATPQR, 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 STOD32ATPQR part is unused and in its original packaging.

Return procedure for STOD32ATPQR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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