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STMicroelectronics STM6601AQ2BDM6F
- Part No.:
- STM6601AQ2BDM6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- 12-WFDFN
- Datasheet:
-
STM6601AQ2BDM6F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:12,122
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Product details
Overview
STM6601AQ2BDM6F from STMicroelectronics is a smart push-button on/off controller with Smart Reset™ and power-on lockout functionality, designed for secure system power sequencing in battery-powered portable electronics. It operates from 1.6 V to 5.5 V, delivers 0.6 µA standby current, features a precise 1.5 V ±1% voltage reference, supports adjustable Smart Reset™ delay via external CSRD capacitor, and enforces fixed tON_BLANK startup confirmation - used in smartphones, audio players, and PDAs for reliable cold-start and undervoltage-protected enable control.
For engineers reviewing the STM6601AQ2BDM6F datasheet, STM6601AQ2BDM6F pinout, STM6601AQ2BDM6F application, or STM6601AQ2BDM6F equivalent, key selection criteria include tON_BLANK timing compliance, PSHOLD-driven startup validation, open-drain vs. push-pull EN output configuration, and Smart Reset™ delay programmability via CSRD - all critical for fail-safe power management in resource-constrained embedded systems.
Technical Context
The STM6601 implements a deterministic power-up sequence where PB press initiates monitoring, but full enable assertion (EN) requires PSHOLD confirmation within a fixed tON_BLANK window - unlike the STM6600's PB-hold-dependent startup. Its internal logic integrates debounced PB/SR inputs, dual-threshold VCC monitoring (VTH+ = 3.4 V typ., VHYST = 200 mV), and edge-triggered interrupt generation on either PB press or VCC drop below VTH−.
Smart Reset™ behavior is configured by external CSRD capacitor charging at ISRD current to VSRD threshold, defining tSRD delay before long-push recognition; RST assertion or EN deassertion depends on factory option. The 1.5 V reference (1% accuracy, 30 ppm/°C drift) powers external circuitry only after tREC expiration and disables in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/battery stacks without external regulation. |
| Standby Current | 0.6 µA - enables multi-year shelf life in always-on portable devices with infrequent user interaction. |
| Voltage Reference Accuracy | 1.5 V ±1% - provides stable bias for ADC references or comparator thresholds without calibration. |
| tON_BLANK Duration | Fixed time period - enforces processor-level power-on confirmation to prevent false starts from faulty switches or unresponsive MCUs. |
| ESD Protection | ±15 kV air / ±8 kV contact - eliminates need for external TVS diodes on PB/SR inputs in handheld consumer designs. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial-grade portable equipment deployed in variable ambient conditions. |
| Reset Pulse Width (tREC) | Typ. 200 ms - ensures reliable MCU reset initialization before enabling downstream power rails. |
Pinout & Package
STM6601AQ2BDM6F is housed in a TDFN12 (2 mm × 3 mm, 0.4 mm pitch) package with wettable flanks, optimized for space-constrained portable PCBs and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Power supply input | Monitored for VTH+ (3.4 V typ.) during startup; requires 0.1 µF local decoupling. |
| 2 SR | Smart Reset™ button input | Active-low input with ±8 kV HBM ESD; must be held low with PB for tSRD to trigger RST or EN deassertion. |
| 3 VREF | Precise 1.5 V reference output | Stable 1% reference active post-tREC; requires mandatory 1 µF bypass capacitor even if unused. |
| 4 PSHOLD | Power-on confirmation input | Must be driven high within tON_BLANK to validate successful MCU boot; internal pull-down during startup. |
| 5 CSRD | Smart Reset™ delay timing input | Capacitor-to-ground sets tSRD; charged by ISRD current to VSRD threshold for long-push qualification. |
| 6 PB | Push-button input | Active-low, internally pulled up; falling edge triggers debounce, INT, or startup sequence depending on state. |
| 7 VCCLO | High-threshold comparator output | Open-drain, active-low signal indicating VCC < VTH+; floats in standby mode. |
| 8 PBOUT | Debounced PB status output | Open-drain, active-low; reflects PB state post-debounce; ignored during undervoltage or tON_BLANK on STM6601. |
| 9 EN | Enable output | Push-pull, active-high; asserts system power only after valid PB press + PSHOLD confirmation within tON_BLANK. |
| 10 RST | Reset output | Open-drain, active-low; pulses low for tREC during startup or after long PB+SR press (option-dependent). |
| 11 INT | Interrupt output | Open-drain, active-low; signals PB press or VCC drop below VTH−; PBOUT state distinguishes cause. |
| 12 GND | Ground reference | Return path for all internal circuits and reference outputs; must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed tON_BLANK startup lockout | Prevents system enable unless host processor actively confirms readiness - eliminating false power-on from switch bounce or MCU hang. |
| Configurable Smart Reset™ delay | External CSRD capacitor sets tSRD independently of firmware, enabling hardware-based reset timing without MCU involvement. |
| Dual-role interrupt output (INT) | Single pin reports both user-initiated PB events and critical VCC undervoltage - reducing GPIO count and simplifying fault diagnostics. |
| 1.5 V ±1% reference with load regulation | Delivers stable reference under 15 µA load with <0.1% line/load regulation - suitable for precision analog subsystems without additional LDO. |
| PSHOLD-driven power-down | Asserting PSHOLD low during normal operation forces immediate EN deassertion - enabling software-controlled graceful shutdown via GPIO. |
Applications
| Smartphone Power Sequencing | Portable Audio Player Startup |
|---|---|
Use Scenario: Cold start from deep sleep or battery insertion, requiring verified MCU readiness before enabling PMIC rails. IC Role / Device Role / Timing Role: On/off controller enforcing tON_BLANK timeout and PSHOLD handshake to confirm bootloader execution before power delivery. Use Value: Prevents boot failure due to premature rail enable; eliminates need for external watchdog or sequencer IC. |
Use Scenario: Single-button power toggle with distinct short-press (play/pause) and long-press (power off) actions. IC Role / Device Role / Timing Role: Smart push-button interface generating INT for short press and RST/EN deassertion for long press with tSRD delay. Use Value: Offloads timing-critical button logic from MCU, reducing firmware complexity and flash usage. |
| Industrial Handheld Terminal | Medical PDA Power Management |
Use Scenario: Field-deployed terminal requiring tamper-resistant power-on with undervoltage lockout during battery swap. IC Role / Device Role / Timing Role: Supervisor monitoring VCC during hot-swap; asserting VCCLO and INT on brownout while maintaining EN until safe shutdown. Use Value: Guarantees data integrity during power transitions; meets IEC 60601-1 voltage transient immunity requirements. |
Use Scenario: Battery-powered diagnostic device needing >10-year shelf life and guaranteed first-power reliability after storage. IC Role / Device Role / Timing Role: Ultra-low-quiescent controller (0.6 µA standby) managing cold-start sequence with precise 1.5 V reference for sensor biasing. Use Value: Extends battery shelf life; eliminates reference drift-induced calibration drift in analog front-end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart push-button on/off controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM6600AQ2BDM6F | Uses PB-hold-dependent startup instead of fixed tON_BLANK; no PSHOLD confirmation required for EN assertion. | Suitable for simpler systems without processor coordination; lacks fail-safe lockout against unresponsive MCU. | Select when startup timing is fully controlled by mechanical button hold duration, not host processor handshake. |
| TPS3808G33DBVR | Dedicated supervisor IC with fixed reset threshold (3.3 V), no PB/SR inputs, no tON_BLANK or Smart Reset™ delay. | Provides basic reset only; cannot replace push-button interface or power sequencing logic. | Choose only for pure voltage-monitoring reset needs - not as functional replacement for STM6601's integrated power control. |
Compared with STM6600AQ2BDM6F, the STM6601AQ2BDM6F adds hardware-enforced PSHOLD validation for robust MCU coordination; versus TPS3808G33DBVR, it integrates full push-button logic, Smart Reset™, and reference output - making it a complete power-management SoC rather than a standalone supervisor.
Availability
STM6601AQ2BDM6F is available at Aetrix Electronics and suitable for smartphone power sequencing, portable audio player startup, industrial handheld terminals, and medical PDA power management requiring stable component supply across extended production lifecycles.
Supply support for STM6601AQ2BDM6F 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 specializing in microcontrollers, power management, and analog ICs for automotive, industrial, and consumer markets.
The STM6600/6601 family is part of ST's Smart Power Management portfolio, engineered specifically for ultra-low-power, push-button-initiated system power control in portable and battery-operated devices.
FAQ
What is the function of the PSHOLD pin on STM6601AQ2BDM6F?
The PSHOLD pin serves as a hardware handshake to confirm successful MCU boot during startup. It must be driven high by the host processor within the fixed tON_BLANK window; failure to do so causes EN deassertion and prevents system power-on. During normal operation, pulling PSHOLD low forces immediate EN deassertion for controlled shutdown.
How does the CSRD pin configure Smart Reset™ timing?
The CSRD pin accepts an external capacitor to ground that sets the Smart Reset™ delay time (tSRD). The internal ISRD current charges this capacitor until it reaches the VSRD threshold; the resulting RC time constant defines how long PB and SR must be held simultaneously to trigger RST assertion or EN deassertion - enabling hardware-programmable reset timing without firmware changes.
Can the STM6601AQ2BDM6F operate without connecting the VREF pin?
No - a 1 µF capacitor is mandatory on the VREF pin regardless of whether the 1.5 V reference is used. This capacitor stabilizes the internal reference circuitry and prevents oscillation or erratic behavior. Leaving VREF unconnected violates the device's electrical specifications and may cause startup failure or unstable EN/RST output.
What distinguishes STM6601AQ2BDM6F from STM6600AQ2BDM6F in startup behavior?
The STM6601 uses a fixed tON_BLANK timeout requiring PSHOLD confirmation to assert EN, ensuring host processor readiness. The STM6600 relies solely on sustained PB press duration - EN asserts once PB is held past tDEBOUNCE and VCC exceeds VTH+, with no processor handshake. This makes the STM6601 more robust for systems where MCU responsiveness must be verified.
STM6601AQ2BDM6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Smart Reset™
- Package/Case:
- 12-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Smart ON/OFF Controller
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 240ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (2x3)
STM6601AQ2BDM6F FAQ
1.How can I place an order for STM6601AQ2BDM6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM6601AQ2BDM6F 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 STM6601AQ2BDM6F reliable?
The price and inventory of STM6601AQ2BDM6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM6601AQ2BDM6F is usually 5 days.
3.What payment methods are accepted for STM6601AQ2BDM6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM6601AQ2BDM6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM6601AQ2BDM6F?
STM6601AQ2BDM6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM6601AQ2BDM6F 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 STM6601AQ2BDM6F?
For technical support, including STM6601AQ2BDM6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM6601AQ2BDM6F requirements.
6.How does Aetrix verify that STM6601AQ2BDM6F is sourced from the original manufacturer or authorized distributors?
All STM6601AQ2BDM6F 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 STM6601AQ2BDM6F meets industry standards.
7.What is the process for return or replacement of STM6601AQ2BDM6F?
All STM6601AQ2BDM6F units undergo pre-shipment inspection (PSI). If there is an issue with STM6601AQ2BDM6F, 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 STM6601AQ2BDM6F part is unused and in its original packaging.
Return procedure for STM6601AQ2BDM6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM6601AQ2BDM6F Tags
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MIC826SYMT-TR
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