My Inquiry
My Account
STMicroelectronics STM6601GU2BDM6F
- Part No.:
- STM6601GU2BDM6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- 12-WFDFN
- Datasheet:
-
STM6601GU2BDM6F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM6601GU2BDM6F 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 uses a fixed tON_BLANK power-up blanking period (distinguishing it from STM6600). It is deployed in smartphones and audio players to manage MOSFET-based power rails.
For engineers reviewing the STM6601GU2BDM6F datasheet, STM6601GU2BDM6F pinout, STM6601GU2BDM6F application, or STM6601GU2BDM6F equivalent, key selection criteria include tON_BLANK timing compliance, PSHOLD confirmation logic, EN/EN output polarity, VCCLO undervoltage detection behavior, and compatibility with 2×3 mm TDFN12 layout constraints.
Technical Context
The STM6601 implements a deterministic power-up sequence where PB press initiates startup, but system enable (EN/EN) remains asserted only if PSHOLD is driven high within the fixed tON_BLANK window-preventing false turn-on due to faulty switches or unresponsive processors. Its internal logic combines debounced PB/SR edge detection, factory-trimmed VTH+ (3.4 V typ.) and VTH− thresholds, and glitch-immune SRD timing control.
Smart Reset™ assertion requires simultaneous PB and SR button hold for ≥tDEBOUNCE + tSRD, with tSRD set by CSRD capacitor charging via ISRD current; RST output is active-low open-drain and held low for tREC (typ. 200 ms) during reset events. The device integrates a dedicated 1.5 V ±1% reference (VREF) with mandatory 1 µF decoupling, disabled in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 1.6 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline systems without external LDO. |
| Standby Current | 0.6 µA - enables multi-year battery life in always-on portable devices with infrequent user interaction. |
| Voltage Reference Accuracy | 1.5 V ±1% - provides stable bias for external ADCs or comparator circuits without calibration. |
| tON_BLANK | Fixed duration (not adjustable) - enforces processor-ready confirmation window during power-up, preventing premature enable assertion. |
| ESD Protection | ±15 kV air / ±8 kV contact - protects PB and SR inputs against human-body-model discharge in handheld interfaces. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial-grade portable equipment deployment. |
| Debounce Period | Configurable via supply voltage (see Figure 29) - rejects mechanical switch bounce without external RC networks. |
Pinout & Package
STM6601GU2BDM6F is housed in a 12-pin TDFN (Thin Dual Flat No-lead) package measuring 2 mm × 3 mm with 0.5 mm pitch, optimized for space-constrained portable PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Power supply input | Must be decoupled with 0.1 µF ceramic capacitor placed adjacent to pin; monitored for VTH+ threshold during startup. |
| 2 SR | Smart Reset™ button input | Active-low input with optional 100 kΩ internal pull-up; requires momentary GND connection; ±8 kV HBM ESD rated. |
| 3 VREF | Precise 1.5 V reference output | Delivers ±1% accurate voltage after tREC expires; requires mandatory 1 µF capacitor even if unused. |
| 4 PSHOLD | Power supply hold confirmation | Input monitored during startup; must be driven high within tON_BLANK to sustain EN/EN assertion; internal pull-down active only at power-up. |
| 5 CSRD | Smart Reset™ delay timing | Capacitor-to-ground sets tSRD; charged by internal ISRD current; open if no delay required. |
| 6 PB | Push-button input | Active-low input with internal 100 kΩ pull-up; detects falling edge; initiates power-up or interrupt based on press duration. |
| 7 VCCLO | High-threshold comparator output | Active-low open-drain signal indicating VCC < VTH+; requires external 10 kΩ pull-up; floats in standby. |
| 8 PBOUT | Debounced PB status | Active-low open-drain output reflecting validated PB press; ignores PB during undervoltage; first-press-only response during tON_BLANK on STM6601. |
| 9 EN / EN | System power enable | Push-pull output (default EN); asserts high to drive external MOSFET/DC-DC converter; deasserts on PSHOLD low, undervoltage, or long push. |
| 10 RST | Reset signal output | Active-low open-drain; held low for tREC (200 ms typ.) during startup or Smart Reset™ event; requires 10 kΩ pull-up. |
| 11 INT | Interrupt output | Active-low open-drain; signals PB short press or VCC undervoltage; duration ≥tINT_Min; requires 10 kΩ pull-up. |
| 12 GND | Ground reference | Primary return path for all internal circuitry and reference outputs; must be low-impedance plane connection. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed tON_BLANK power-up lockout | Ensures microprocessor readiness before enabling system power-eliminates boot failures from unresponsive hosts. |
| Smart Reset™ with external CSRD timing | Enables field-adjustable reset delay (tSRD) via capacitor value-supports diverse system recovery timing requirements. |
| Dual-purpose PB input with first-press priority | On STM6601, PBOUT responds only to initial press during tON_BLANK-prevents spurious restarts from accidental repeated presses. |
| Integrated 1.5 V ±1% voltage reference | Reduces BOM count by eliminating external reference ICs for ADC biasing or comparator thresholds. |
| VCCLO undervoltage indicator | Provides dedicated, glitch-immune signal for system-level brown-out detection-enables graceful shutdown without MCU intervention. |
Applications
| Smartphone Power Sequencing | Portable Audio Player Control |
|---|---|
Use Scenario: User powers on smartphone after extended idle; battery voltage may be marginal and processor initialization time varies. IC Role / Device Role / Timing Role: STM6601 monitors VCC, validates PB press, and gates EN only after PSHOLD confirmation within tON_BLANK-ensuring CPU is ready before power delivery. Use Value: Prevents boot hangs and corrupted firmware loads caused by premature power enable to unready SoC. | Use Scenario: Compact MP3 player uses momentary buttons for ON/OFF and reset; must survive repeated ESD exposure from user handling. IC Role / Device Role / Timing Role: STM6601 accepts PB/SR inputs with ±15 kV air discharge rating and debounces presses internally-replacing RC filters and discrete protection diodes. Use Value: Reduces PCB area by >2.5 mm² and eliminates 6 passive components per button interface. |
| Industrial Handheld Terminal | Bluetooth Headset Power Management |
Use Scenario: Rugged terminal operates across –40 °C to +85 °C; battery voltage drifts significantly at temperature extremes. IC Role / Device Role / Timing Role: STM6601 uses factory-trimmed, temperature-compensated VTH+ (3.4 V typ.) and hysteresis (200 mV typ.)-maintaining consistent turn-on threshold across full range. Use Value: Guarantees reliable power-up at cold start without software calibration or lookup tables. | Use Scenario: Ultra-low-power headset enters deep sleep; must wake instantly on button press while consuming <1 µA average current. IC Role / Device Role / Timing Role: STM6601 draws only 0.6 µA in standby and asserts EN within microseconds of valid PB press-enabling sub-100 ms wake latency. Use Value: Extends battery life to 180+ days in standby while preserving responsive user interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar push-button power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM6600GU2BDM6F | Uses PB-hold duration (not fixed tON_BLANK) to determine power-up validity; PSHOLD confirmation not required for initial enable. | Better suited for systems with unpredictable or slow processor boot times where tON_BLANK timeout would cause failure. | Select STM6600 if host MCU cannot guarantee PSHOLD assertion within fixed window; STM6601 preferred when deterministic lockout is required. |
| TPS3808G12DBVR | Dedicated supervisor IC with reset only; lacks PB/SR inputs, EN control, Smart Reset™, or tON_BLANK logic-requires external button interface circuitry. | Applicable only for basic reset generation; cannot replace STM6601's integrated power sequencing and user interaction functions. | Choose TPS3808G12DBVR only for simple voltage-monitoring reset; STM6601 is required for full push-button power management. |
Compared with STM6600GU2BDM6F, STM6601GU2BDM6F trades flexible startup timing for guaranteed power-on lockout-making it superior for safety-critical or certified portable devices. Versus TPS3808G12DBVR, it integrates complete user-interface logic, eliminating 3–5 external components and enabling true single-chip power control.
Availability
STM6601GU2BDM6F is available at Aetrix Electronics and suitable for smartphone power sequencing, portable audio player control, industrial handheld terminals, and Bluetooth headset power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STM6601GU2BDM6F 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, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.
The STM6600/STM6601 product line targets ultra-low-power portable electronics requiring robust, integrated push-button power management with fail-safe startup validation and Smart Reset™ capability.
FAQ
What is the function of the PSHOLD pin on STM6601GU2BDM6F?
The PSHOLD pin serves as a hardware confirmation signal during power-up: the host processor must drive it high within the fixed tON_BLANK window to sustain the EN/EN output assertion. If unasserted, EN/EN deactivates-preventing system operation under marginal or unverified power conditions. During normal operation, pulling PSHOLD low forces immediate power-down.
How does STM6601GU2BDM6F differ from STM6600GU2BDM6F in startup behavior?
STM6601 uses a fixed tON_BLANK timer to enforce PSHOLD confirmation, while STM6600 relies on PB press duration alone. On STM6601, releasing PB before PSHOLD assertion causes EN/EN to drop regardless of press length; STM6600 allows release after tDEBOUNCE but before tON_BLANK expiration. This makes STM6601 more robust against faulty switches or hung processors.
Can the VREF output be left unconnected if not used in the design?
No-VREF requires a mandatory 1 µF ceramic capacitor to ground, even if the 1.5 V reference is unused. Omitting this capacitor causes instability in internal regulation and may result in erratic reset behavior or failure to exit standby mode. The capacitor ensures proper reference settling and noise immunity per ST's layout guidelines.
What is the purpose of the CSRD pin and how is its timing determined?
The CSRD pin sets the Smart Reset™ delay time (tSRD) by connecting an external capacitor to ground. An internal current source (ISRD) charges the capacitor until it reaches VSRD threshold; tSRD = (VSRD × CSRD) / ISRD. Typical values yield ~100–500 ms delays. Leaving CSRD open disables Smart Reset™, causing long-push detection to occur immediately after tINT_Min expires.
STM6601GU2BDM6F 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:
- 3.5V
- 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)
STM6601GU2BDM6F FAQ
1.How can I place an order for STM6601GU2BDM6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM6601GU2BDM6F 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 STM6601GU2BDM6F reliable?
The price and inventory of STM6601GU2BDM6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM6601GU2BDM6F is usually 5 days.
3.What payment methods are accepted for STM6601GU2BDM6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM6601GU2BDM6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM6601GU2BDM6F?
STM6601GU2BDM6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM6601GU2BDM6F 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 STM6601GU2BDM6F?
For technical support, including STM6601GU2BDM6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM6601GU2BDM6F requirements.
6.How does Aetrix verify that STM6601GU2BDM6F is sourced from the original manufacturer or authorized distributors?
All STM6601GU2BDM6F 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 STM6601GU2BDM6F meets industry standards.
7.What is the process for return or replacement of STM6601GU2BDM6F?
All STM6601GU2BDM6F units undergo pre-shipment inspection (PSI). If there is an issue with STM6601GU2BDM6F, 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 STM6601GU2BDM6F part is unused and in its original packaging.
Return procedure for STM6601GU2BDM6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM6601GU2BDM6F Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
