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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

STMicroelectronics STODD03QTR

Name: STODD03QTR
Brand: STMicroelectronics
SKU: STODD03QTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STODD03QTR

Manufacturer:: STMicroelectronics

Category:: Power Management - Specialized

Package:: 16-VQFN Exposed Pad

Datasheet:: STODD03QTR.pdf

Description:: IC BLU-RAY PWR MANAGEMENT 16QFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,499

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Product details

Overview

STODD03QTR from STMicroelectronics is a monolithic 2-channel power management IC for Blu-ray optical disc drives, integrating a 3.3 V/700 mA step-down converter, a 6.5–14 V/500 mA adjustable step-up converter, and a 1 A motor control power switch in a single QFN16 (4 × 4 mm) package. It delivers synchronous rectification, true shutdown for the step-up channel, and internal soft-start.

For engineers reviewing the STODD03QTR datasheet, STODD03QTR pinout, STODD03QTR application, or STODD03QTR equivalent, key selection criteria include its dual-output topology, integrated motor switch capability, ±2% step-down and ±3% step-up voltage tolerance, 1.2 MHz PWM frequency, and thermal shutdown at 130 °C.

Technical Context

The STODD03QTR implements two independent DC-DC channels: a current-mode PWM step-down regulator with fixed 3.3 V output and up to 700 mA load, and a step-up converter with externally adjustable output (6.5–14 V) and 500 mA capability. Both use integrated N- and P-channel MOSFETs with R_DS(on) ≤ 300 mΩ (step-up) and ≤ 0.3 Ω (step-down).

A dedicated 1 A power switch supports motor drive with active-low EN-SW and truth-table-controlled enable logic. The device features separate analog (VIN_A) and power (VIN_P, VIN_PSW) rails, independent enable pins (EN1, EN2, EN-SW), and feedback pins (FB1, FB2) for precise regulation - all coordinated under a single thermal shutdown threshold of 130 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Step-down output	Fixed 3.3 V ±2%, supports 700 mA load with 1.2 MHz switching and synchronous rectification.
Step-up output	Adjustable 6.5–14 V ±3%, delivers up to 500 mA with true cutoff shutdown and internal current limiting.
Motor power switch	1 A rated output with 0.3 Ω PMOS R_DS(on), controlled by active-low EN-SW and truth-table logic.
Input voltage range	4–6 V across VIN_P, VIN_A, and VIN_PSW rails - optimized for 5 V system supply in ODD applications.
Thermal protection	Thermal shutdown at 130 °C with 15 °C hysteresis ensures safe operation during sustained overload or poor PCB heat sinking.
Efficiency	Typical 90% at mid-load (e.g., 500 mA @ 3.3 V), enabled by low-R_DS(on) switches and current-mode PWM control.
Package	QFN16 (4 × 4 mm), exposed pad for thermal dissipation; R_thJA = 46 °C/W, R_thJC = 2.5 °C/W.

Pinout & Package

STODD03QTR is housed in a thermally enhanced QFN16 (4 × 4 mm) package with an exposed thermal pad (EPAD) requiring connection to PCB ground plane via multiple vias for optimal thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1, 9, 11, EPAD	Power/Analog Ground	Dedicated GND_P1, GND_P2, GND_A, and EPAD provide isolated return paths for switching, motor, and analog sections to minimize noise coupling.
2, 10	Feedback Inputs	FB1 monitors step-up output (0.8 V ref); FB2 monitors step-down output (3.3 V ref); both bias currents < 20 µA.
3, 7, 6	Supply Inputs	VIN_A powers analog circuitry; VIN_P supplies step-down channel; VIN_PSW feeds motor switch - each rated -0.3 to 7 V.
4, 13, 15, 16	Enable Controls	EN2 (step-down), EN-SW (motor), EN1 + EN-SW (step-up truth table) - all TTL-compatible with 1.2 V high threshold.
5, 12, 8, 14	Power Terminals	PSWOUT (1 A motor output), OUT1 (step-up output), SW2 (step-down switch node), SW1 (step-up switch node).

Key Features

Feature	Design Value
Integrated motor power switch	1 A rated output with 0.3 Ω R_DS(on) eliminates need for external FET and gate driver in ODD spindle/motor circuits.
True shutdown for step-up channel	Zero output leakage (< 20 µA) when disabled - critical for laser diode safety and standby power compliance in optical drives.
Synchronous rectification	Reduces conduction loss in both DC-DC channels, enabling >90% efficiency and eliminating external Schottky diodes.
High-frequency 1.2 MHz PWM	Enables use of miniature 3.3 µH and 4.7 µH inductors and 10–22 µF ceramic capacitors, reducing board area by >40% vs. 500 kHz designs.
Independent analog and power domains	VIN_A and GND_A isolation prevents switching noise from degrading feedback accuracy and reference stability.

Applications

Blu-ray Disc Drive Power System

Laser Diode Bias Supply

Use Scenario: Primary power management unit in consumer Blu-ray players and recorders, supplying regulated rails to servo, spindle, and laser subsystems from a single 5 V input.

IC Role / Device Role / Timing Role: Dual-output PMIC providing 3.3 V for digital logic and 9 V for blue laser diode bias, plus 1 A motor drive for spindle control.

Use Value: Integrates three critical power functions into one QFN16 package, reducing BOM count by ≥7 discrete components and improving thermal coupling between channels.

Use Scenario: Adjustable high-voltage bias source for 405 nm blue laser diodes in BD-ROM/BD-RE optical pickup units.

IC Role / Device Role / Timing Role: Step-up converter with 6.5–14 V programmable output and true shutdown, directly controlling laser activation timing and overvoltage protection.

Use Value: ±3% output tolerance and 15.3 V OVP threshold ensure stable laser operation while preventing catastrophic diode failure during transients.

Optical Storage Servo Control

Embedded ODD Reference Design

Use Scenario: Powering focus/tracking actuator drivers and position-sensing ADCs in high-density optical storage mechanisms.

IC Role / Device Role / Timing Role: Low-noise 3.3 V step-down rail with <15 mV load regulation and separate analog ground (GND_A) for precision analog signal chain integrity.

Use Value: Dedicated VIN_A and GND_A pins reduce switching ripple on feedback paths, enabling <±0.5% output variation across 0–700 mA load range.

Use Scenario: Core power solution in ST's reference design for portable Blu-ray modules targeting set-top boxes and external USB drives.

IC Role / Device Role / Timing Role: Single-chip replacement for multi-IC discrete power trees, supporting rapid prototyping with minimal external components (4 caps, 2 inductors, 2 resistors).

Use Value: Pre-validated layout footprint and thermal design (R_thJC = 2.5 °C/W) cut time-to-market by eliminating thermal simulation iterations for Class 1 ODD applications.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output optical drive power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS65136RGTT	Single 3.3 V/700 mA buck + 12 V/300 mA boost; no integrated motor switch; 2.5 MHz switching; 0.8 mm pitch QFN20.	Lacks 1 A motor driver - requires external FET and gate driver for spindle control; higher frequency enables smaller passives but increases EMI filtering complexity.	Select when motor drive is handled separately and board space allows larger QFN20; avoid if true-shutdown laser bias or integrated motor control is required.
RT8070ZSP	3.3 V/1 A buck + 12 V/400 mA boost; no motor switch; 1.5 MHz; QFN16 (3 × 3 mm); no true shutdown (leakage ~50 µA).	Higher step-down current but no motor integration; lacks true cutoff - unsuitable for laser diode safety-critical standby states.	Consider only for non-Blu-ray ODD variants where laser bias can tolerate residual leakage and motor is driven externally.

Compared with TPS65136RGTT and RT8070ZSP, STODD03QTR uniquely combines step-down, step-up, and motor switch in one QFN16 with true shutdown - making it the only single-package solution qualified for full Blu-ray drive power architecture without compromising laser safety or servo precision.

Availability

STODD03QTR is available at Aetrix Electronics and suitable for Blu-ray disc drive manufacturing, optical pickup unit (OPU) design, and embedded ODD reference platforms requiring stable component supply, long-lifecycle support, and automotive-grade traceability.

Supply support for STODD03QTR 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STODD03QTR belongs to ST's Optical Storage Power Management product line, engineered specifically to consolidate power delivery for Blu-ray and HD-DVD optical drives - minimizing component count while meeting stringent laser bias accuracy, motor drive reliability, and thermal constraints.

FAQ

What is the maximum allowable input voltage for STODD03QTR?

The absolute maximum input voltage for VIN_P, VIN_A, and VIN_PSW is 7 V. Operation above 6 V violates the recommended operating range and risks permanent damage due to overstress of internal MOSFETs and gate drivers. The device is designed for nominal 5 V input systems common in optical disc drives.

Can STODD03QTR drive a 12 V laser diode directly?

Yes - the step-up channel supports 6.5–14 V output with external resistor divider feedback (R1/R2). For 12 V operation, use R1 = 33 kΩ and R2 = 3.3 kΩ per the datasheet formula, achieving ±3% regulation and 500 mA continuous current with thermal derating above 85 °C ambient.

Does STODD03QTR require external compensation components?

No - the current-mode PWM control architecture is internally compensated. External components are limited to input/output capacitors, power inductors, and feedback resistors; no compensation network (e.g., Type II/III compensator) is needed, simplifying layout and reducing design validation effort.

How is thermal performance managed in STODD03QTR?

Thermal management relies on the exposed thermal pad (EPAD) soldered to a PCB ground plane with ≥4 thermal vias. With proper layout, R_thJC = 2.5 °C/W enables 1.2 A total power dissipation before triggering 130 °C thermal shutdown - verified per JEDEC JESD51-7 standards in typical ODD PCB stacks.

STODD03QTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-VQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Optical

Current - Supply:: 1.6mA

Voltage - Supply:: 4V ~ 6V

Operating Temperature:: -25°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (4x4)

STODD03QTR FAQ

1.How can I place an order for STODD03QTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STODD03QTR 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 STODD03QTR reliable?

The price and inventory of STODD03QTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STODD03QTR is usually 5 days.

3.What payment methods are accepted for STODD03QTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STODD03QTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STODD03QTR?

STODD03QTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STODD03QTR 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 STODD03QTR?

For technical support, including STODD03QTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STODD03QTR requirements.

6.How does Aetrix verify that STODD03QTR is sourced from the original manufacturer or authorized distributors?

All STODD03QTR 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 STODD03QTR meets industry standards.

7.What is the process for return or replacement of STODD03QTR?

All STODD03QTR units undergo pre-shipment inspection (PSI). If there is an issue with STODD03QTR, 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 STODD03QTR part is unused and in its original packaging.

Return procedure for STODD03QTR:

1.Submit a request within 90 days.

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

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