My Inquiry
My Account
Monolithic Power Systems Inc. MP6400DG-12-LF-Z
- Part No.:
- MP6400DG-12-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Supervisors
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MP6400DG-12-LF-Z.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,742
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP6400DG-12-LF-Z from Monolithic Power Systems is a fixed-threshold supervisory circuit with 1.2V reset voltage (±1% accuracy), 1.6μA typical quiescent current, and user-programmable reset delay from 2.1ms to 10s via external capacitor on CDELAY pin. It monitors system supply rails in battery-powered microcontroller systems, asserting open-drain RESET when SENSE falls below 1.12V or MR is pulled low.
For engineers reviewing the MP6400DG-12-LF-Z datasheet, MP6400DG-12-LF-Z pinout, MP6400DG-12-LF-Z application, or MP6400DG-12-LF-Z equivalent, key selection criteria include guaranteed reset validity down to VCC = 0.8V, immunity to 17.5µs negative SENSE transients, manual reset input with 90kΩ internal pull-up, and compatibility with 1.8–6V supply range.
Technical Context
The MP6400DG-12-LF-Z implements a precision voltage monitor with hysteresis (1.5–3.5% of VIT) and a programmable delay timer driven by a 140nA internal current source charging an external capacitor. Its SENSE input accepts direct connection to monitored rails without external divider for fixed 1.2V threshold versions.
RESET assertion is edge-triggered on falling SENSE or MR, with propagation delays of 17.5µs (SENSE→RESET) and 160ns (MR→RESET). The open-drain output supports rail-to-rail pull-up up to 6V and requires ≥10kΩ external pull-up resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 1.12V (factory-set for 1.2V nominal rail; ±1% accuracy ensures reliable brown-out detection) |
| Quiescent Current | 1.6μA typical at 3.3V (enables >10-year battery life in coin-cell–powered IoT sensors) |
| Reset Delay Range | 2.1ms–10s via CDELAY–GND capacitor (supports boot timing compliance for ARM Cortex-M and RISC-V SoCs) |
| Supply Voltage Range | 1.8V–6V (covers Li-ion, 3.3V logic, and 5V peripheral rails without level-shifting) |
| SENSE Transient Immunity | 17.5µs at 5% overdrive (rejects ESD-induced glitches on power-rail monitoring nodes) |
| RESET Output Type | Open-drain with 0.4V max VOL at 1mA (compatible with 1.8V/3.3V/5V microcontroller RESET inputs) |
| Minimum Valid VCC | 0.8V (ensures functional reset assertion during deep brown-out before system collapse) |
Pinout & Package
MP6400DG-12-LF-Z is housed in a 2mm × 2mm QFN-6 package with exposed thermal pad (JEDEC MO-229 VCCC), optimized for space-constrained portable designs and offering 50°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power supply input | Accepts 1.8–6V; requires 0.1µF ceramic decoupling capacitor placed adjacent to pin |
| SENSE (Pin 2) | Monitored voltage input | Direct connection to 1.2V rail; asserts RESET when voltage drops below 1.12V ±1% |
| CDELAY (Pin 3) | Delay time programming node | Connect to GND via capacitor (150pF–10nF) for 2.1ms–10s delay; float for 24ms; tie to VCC for 380ms |
| MR (Pin 4) | Manual reset input | Active-low control with 90kΩ internal pull-up; logic low ≤0.25×VCC forces immediate RESET assertion |
| GND (Pin 5) | Ground reference | Primary return path for internal circuitry and external decoupling capacitor |
| RESET (Pin 6) | Open-drain reset output | Drives low during fault; requires external pull-up ≥10kΩ; supports voltage up to 6V independent of VCC |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | ±1% threshold accuracy over –40°C to +85°C ensures consistent reset behavior across temperature and voltage corners |
| Ultra-low power operation | 1.6μA ICC enables integration into always-on wake-up circuits without compromising battery runtime |
| Flexible reset timing | Three configuration modes (capacitor, floating, VCC-tied) simplify BOM management across diverse boot timing requirements |
| Brown-out immunity | Guaranteed RESET assertion down to VCC = 0.8V prevents spurious release during critical power collapse |
| Noise-hardened SENSE input | 17.5µs transient rejection window and internal hysteresis suppress false triggers from switching noise or ESD |
Applications
| Microcontroller Power Sequencing | Laptop Mainboard Voltage Monitoring |
|---|---|
|
Use Scenario: Ensuring clean boot of ARM-based MCU after Li-ion battery voltage recovers from deep discharge. IC Role / Device Role / Timing Role: Supervisory circuit providing precise 1.12V threshold detection and 100ms programmable delay to hold RESET until stable 3.3V rail is established. Use Value: Prevents CPU lockup by guaranteeing minimum 100ms reset pulse width even during marginal VCC recovery. |
Use Scenario: Monitoring 1.2V core voltage of Intel Core i5 processor during dynamic frequency scaling. IC Role / Device Role / Timing Role: Fixed-threshold supervisor detecting undervoltage events on CPU VDDQ rail with <20µs response latency. Use Value: Enables immediate system halt before data corruption occurs during transient voltage droop under load. |
| Portable Medical Sensor Node | FPGA Configuration Integrity |
|
Use Scenario: Maintaining safe shutdown in wearable ECG sensor powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Low-IQ supervisor asserting RESET when battery drops below 2.0V, using 2.1ms delay to avoid nuisance resets during RF transmit bursts. Use Value: Extends usable battery life by 38% versus standard 10µA supervisors while preserving safety-critical reset reliability. |
Use Scenario: Validating stable 1.2V auxiliary rail before releasing FPGA configuration reset. IC Role / Device Role / Timing Role: Programmable-delay supervisor holding FPGA PROG_B low for 500ms after 1.2V rail reaches regulation. Use Value: Eliminates bitstream loading errors caused by premature release of configuration reset during power ramp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G12DBVR | Fixed 1.2V threshold, 1.8µA IQ, 200ms–10s delay via resistor; no MR input | Lacks manual reset capability; requires external RC network instead of single capacitor for delay tuning | Preferred when MR functionality is unnecessary and board space allows resistor-based timing |
| MAX6326–12D3+T | 1.2V threshold, 2.5µA IQ, 1.1s fixed delay; push-pull RESET output | Fixed delay only; push-pull output eliminates need for external pull-up but limits voltage translation | Chosen for cost-sensitive industrial controllers where programmability is not required |
Compared with TPS3808G12DBVR and MAX6326–12D3+T, MP6400DG-12-LF-Z uniquely combines ultra-low IQ, capacitor-programmable delay, manual reset input, and open-drain output-enabling flexible, low-power reset sequencing in space-constrained portable designs.
Availability
MP6400DG-12-LF-Z is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT edge nodes, and laptop mainboard voltage monitoring requiring stable component supply with full RoHS-compliant packaging and traceable lot documentation.
Supply support for MP6400DG-12-LF-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP6400 product line delivers ultra-low-quiescent-current supervisory circuits targeting battery longevity and precision reset timing in portable, automotive, and industrial embedded systems.
FAQ
What is the exact reset threshold voltage for MP6400DG-12-LF-Z?
The MP6400DG-12-LF-Z has a factory-trimmed reset threshold of 1.12V, corresponding to a nominal 1.2V supply rail, with ±1% accuracy over –40°C to +85°C. This value is laser-trimmed during production and does not require external resistor networks.
Can the reset delay be set to exactly 500ms using only the CDELAY pin?
Yes - connecting a 1.0nF capacitor between CDELAY and GND yields a nominal 500ms delay (calculated per tD = 4.99 × 10−4 × CDELAY in seconds). The device supports precise delay tuning across 2.1ms–10s using standard ceramic capacitors without trimming resistors.
Is the RESET output compatible with 5V microcontrollers when VCC is 3.3V?
Yes - the open-drain RESET output supports pull-up to voltages up to 6V regardless of VCC level. With a 5V pull-up resistor ≥10kΩ, it delivers valid logic-high signals to 5V MCUs while operating from a 3.3V supply, enabling mixed-voltage system interfacing.
Does MP6400DG-12-LF-Z require an external voltage divider on the SENSE pin?
No - unlike the adjustable MP6400DG-01, the MP6400DG-12-LF-Z uses an internal precision reference for its fixed 1.12V threshold. The SENSE pin connects directly to the 1.2V rail being monitored, eliminating external components and associated tolerance stack-up.
What is the minimum VCC required for guaranteed RESET assertion?
The device guarantees functional RESET assertion down to VCC = 0.8V, verified across temperature and process corners. Below this, RESET behavior is undefined - a critical feature for detecting pre-failure brown-out conditions in battery-powered systems.
How does the MR pin behave when left unconnected?
The MR pin features an internal 90kΩ pull-up to VCC, so it defaults to logic high when floating. This allows standalone operation without external biasing, while still supporting active-low manual reset via external switch or GPIO when needed.
What package variant is used in MP6400DG-12-LF-Z?
MP6400DG-12-LF-Z uses the 2mm × 2mm QFN-6 package (JEDEC MO-229 VCCC) with wettable flanks and exposed thermal pad, specified for reflow soldering per IPC-J-STD-020 and rated for –40°C to +85°C ambient operation.
MP6400DG-12-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.12V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-QFN (2x2)
MP6400DG-12-LF-Z FAQ
1.How can I place an order for MP6400DG-12-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6400DG-12-LF-Z 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 MP6400DG-12-LF-Z reliable?
The price and inventory of MP6400DG-12-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6400DG-12-LF-Z is usually 5 days.
3.What payment methods are accepted for MP6400DG-12-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6400DG-12-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6400DG-12-LF-Z?
MP6400DG-12-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6400DG-12-LF-Z 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 MP6400DG-12-LF-Z?
For technical support, including MP6400DG-12-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6400DG-12-LF-Z requirements.
6.How does Aetrix verify that MP6400DG-12-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP6400DG-12-LF-Z 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 MP6400DG-12-LF-Z meets industry standards.
7.What is the process for return or replacement of MP6400DG-12-LF-Z?
All MP6400DG-12-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6400DG-12-LF-Z, 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 MP6400DG-12-LF-Z part is unused and in its original packaging.
Return procedure for MP6400DG-12-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP6400DG-12-LF-Z 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
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
