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Diodes Incorporated PT7M6133NLTA3EX
- Part No.:
- PT7M6133NLTA3EX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M6133NLTA3EX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,701
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Product details
Overview
PT7M6133NLTA3EX from Pericom Semiconductor is a precision ultra-low-power voltage detector with 3.3V threshold (±1.5% at 25°C), N-channel open-drain active-low reset output, and 17µs propagation delay. It operates from 1.2V to 5.5V supply, consumes only 0.9µA at 3V, and features 5% internal hysteresis (VTH+ = 1.05 × VTH−). Used for battery voltage monitoring and power-on reset in portable medical sensors.
For engineers reviewing the PT7M6133NLTA3EX datasheet, PT7M6133NLTA3EX pinout, PT7M6133NLTA3EX application, or PT7M6133NLTA3EX equivalent, key selection criteria include threshold accuracy over temperature (±2.5% typ), open-drain drive capability (1mA sink), SOT23-3 package footprint, and compatibility with 1.2V minimum supply rails.
Technical Context
The PT7M6133NLTA3EX integrates a precision bandgap reference, comparator, and trimmed resistor network to set a fixed 3.3V detection threshold. Its internal hysteresis circuit ensures stable reset assertion/deassertion by defining VTH− = 3.3V and VTH+ = 3.465V.
It uses an N-channel open-drain output stage requiring an external pull-up resistor, supports operation down to 1.2V supply, and delivers guaranteed reset timing with 17µs typical propagation delay and <40µs max under all conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Threshold | 3.3V ±1.5% at 25°C; ensures reliable reset initiation when system VCC drops below nominal 3.3V rail |
| Supply Voltage Range | 1.2V to 5.5V; enables use in low-voltage battery-powered systems and legacy 5V designs |
| Quiescent Current | 0.9µA at 3V; extends battery life in always-on monitoring applications such as wearable health monitors |
| Propagation Delay | 17µs typical; provides fast response to brown-out events without excessive timing uncertainty |
| Hysteresis | 5% (VTH+ = 1.05 × VTH−); prevents output oscillation during slow or noisy supply ramp-up/down |
| Output Type | N-channel open-drain, active-low; allows wired-OR reset bus configuration and flexible pull-up voltage selection |
| Operating Temp | −40°C to +85°C; qualified for industrial and automotive cabin-temperature environments |
Pinout & Package
SOT23-3 package (JEDEC MO-178AA compliant), 2.9mm × 1.3mm footprint, 1.45mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power Supply Input | Accepts 1.2V–5.5V supply; powers internal reference and comparator; must be decoupled with ≥0.1µF capacitor |
| 2 (GND) | Ground Reference | Analog and digital ground return; requires low-impedance connection to system ground plane |
| 3 (RST) | Open-Drain Reset Output | Active-low signal asserted when VCC < 3.3V; requires external pull-up resistor (1kΩ–510kΩ) to defined logic-high voltage |
Key Features
| Feature | Design Value |
|---|---|
| Precision threshold trimming | ±1.5% initial accuracy eliminates need for external calibration or adjustment components |
| Ultra-low ICC | 0.9µA at 3V enables multi-year operation on coin-cell batteries in IoT endpoint devices |
| Guaranteed hysteresis | Fixed 5% hysteresis (VTH+ = 1.05 × VTH−) prevents chatter during marginal supply conditions |
| Fast propagation delay | 17µs typical ensures timely system reset before critical logic state corruption occurs |
| Wide supply range | 1.2V minimum operation supports direct integration with LiFePO₄ (2.5–3.65V) and alkaline (0.9–1.5V ×2) battery stacks |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with coin-cell power and BLE transmission. IC Role / Device Role / Timing Role: Voltage detector providing power-on reset and brown-out protection for the MCU and analog front-end. Use Value: 0.9µA quiescent current extends 3V CR2032 battery life beyond 2 years; 3.3V threshold aligns with MCU VDDIO specification. |
Use Scenario: DIN-rail mounted remote I/O module powered from 24VDC supply with local 3.3V LDO. IC Role / Device Role / Timing Role: Supervisory IC asserting reset to FPGA during 3.3V rail undervoltage events. Use Value: 17µs propagation delay ensures deterministic reset timing; −40°C to +85°C rating matches industrial ambient requirements. |
| Smart Energy Meters | Automotive Body Control Modules |
Use Scenario: ANSI C12.22-compliant electricity meter with dual-supply (battery + line) architecture. IC Role / Device Role / Timing Role: Monitors backup lithium-thionyl-chloride battery voltage (nominal 3.6V) to trigger low-battery alert and safe shutdown. Use Value: 3.3V detection threshold with ±2.5% accuracy over temperature ensures reliable end-of-life flagging across −25°C to +70°C operating range. |
Use Scenario: Door module with LIN transceiver and microcontroller powered from vehicle battery via 3.3V LDO. IC Role / Device Role / Timing Role: Resets microcontroller when ignition-derived 3.3V rail dips below 3.3V during cranking transients. Use Value: Open-drain output interfaces directly with microcontroller's dedicated reset pin; 5% hysteresis prevents false resets during 100ms–500ms supply sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBZR | 3.3V threshold, ±2% accuracy, 0.5µA ICC, SOT23-3, push-pull active-low output | Requires no pull-up resistor; lower ICC but lacks hysteresis programmability | Select when board space permits no external resistor and higher accuracy is required |
| APX803S-33SA-7 | 3.3V threshold, ±1.5% accuracy, 1.1µA ICC, SOT23-3, open-drain active-low output, 5.5% hysteresis | Identical hysteresis ratio and output topology; slightly higher ICC | Select when second-source qualification for long-term supply continuity is prioritized |
Compared with TLV803EB33DBZR, PT7M6133NLTA3EX offers identical threshold accuracy but requires an external pull-up-adding design flexibility in mixed-voltage systems. Against APX803S-33SA-7, it delivers lower quiescent current (0.9µA vs. 1.1µA), directly extending battery runtime in energy-constrained deployments.
Availability
PT7M6133NLTA3EX is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for PT7M6133NLTA3EX 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
Pericom Semiconductor (now part of Diodes Incorporated) specializes in high-performance interface, timing, and power management ICs for communications, computing, and industrial markets.
The PT7M61xx series was designed specifically for ultra-low-power voltage supervision in battery-backed and energy-sensitive embedded systems, emphasizing accuracy, minimal ICC, and robust hysteresis behavior.
FAQ
What is the exact detection threshold voltage for PT7M6133NLTA3EX?
The PT7M6133NLTA3EX has a nominal detection threshold (VTH−) of 3.3V, with initial accuracy of ±1.5% at 25°C and ±2.5% over the full −40°C to +85°C operating range. The hysteresis ensures VTH+ = 3.465V, preventing output oscillation during supply transitions.
Can PT7M6133NLTA3EX operate from a 1.5V supply?
Yes - the device operates from 1.2V to 5.5V, so it functions reliably at 1.5V. However, the 3.3V threshold remains fixed; at 1.5V supply, the output will assert continuously since VCC never reaches VTH−. It is intended for monitoring supplies ≥3.3V or used with resistive dividers for higher input voltages.
What pull-up resistor value is recommended for the RST pin?
A pull-up resistor between 1kΩ and 510kΩ is specified. For fastest rise time and noise immunity in noisy environments, 1kΩ–10kΩ is preferred; for ultra-low standby current in battery systems, 100kΩ–510kΩ is typical. Ensure the chosen value maintains valid logic-high voltage at the driven node under all load conditions.
Does PT7M6133NLTA3EX include ESD protection on its pins?
Yes - the device includes built-in ESD protection rated to ±2kV HBM (Human Body Model) on all pins, per standard JEDEC JESD22-A114 requirements. This enables robust handling during PCB assembly and operation in electrostatic-prone industrial environments without requiring external TVS diodes.
PT7M6133NLTA3EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 200µs Maximum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
PT7M6133NLTA3EX FAQ
1.How can I place an order for PT7M6133NLTA3EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M6133NLTA3EX 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 PT7M6133NLTA3EX reliable?
The price and inventory of PT7M6133NLTA3EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M6133NLTA3EX is usually 5 days.
3.What payment methods are accepted for PT7M6133NLTA3EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M6133NLTA3EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M6133NLTA3EX?
PT7M6133NLTA3EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M6133NLTA3EX 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 PT7M6133NLTA3EX?
For technical support, including PT7M6133NLTA3EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M6133NLTA3EX requirements.
6.How does Aetrix verify that PT7M6133NLTA3EX is sourced from the original manufacturer or authorized distributors?
All PT7M6133NLTA3EX 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 PT7M6133NLTA3EX meets industry standards.
7.What is the process for return or replacement of PT7M6133NLTA3EX?
All PT7M6133NLTA3EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M6133NLTA3EX, 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 PT7M6133NLTA3EX part is unused and in its original packaging.
Return procedure for PT7M6133NLTA3EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PT7M6133NLTA3EX Tags
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