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Monolithic Power Systems Inc. MPQ5073GG-Z
- Part No.:
- MPQ5073GG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
MPQ5073GG-Z.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
MPQ5073GG-Z from Monolithic Power Systems is an AEC-Q100 qualified 2A load switch with programmable current limiting, designed for high-efficiency power path control in portable and automotive systems. It features a 50mΩ RDS(ON) DMOS FET, 0.5V–5.5V input range, <5µA shutdown current, and integrated soft-start, output discharge, and fast short-circuit protection (200ns response).
For engineers reviewing the MPQ5073GG-Z datasheet, MPQ5073GG-Z pinout, MPQ5073GG-Z application, or MPQ5073GG-Z equivalent, this device supports precise inrush current management, thermal-safe current limiting via ILIM resistor, push-pull PG monitoring, and space-constrained designs requiring QFN-12 (2mm×2mm) packaging.
Technical Context
The MPQ5073GG-Z uses a sense-FET topology to deliver accurate, resistor-programmable current limiting (e.g., 1.4A with 24kΩ ILIM), with internal auto-zero comparator for stable current sensing. Its charge pump enables full enhancement of the low-RDS(ON) power FET across 3V–5.5V VCC.
It integrates dual-stage overcurrent protection: primary regulation at user-set threshold (~20µs response) and secondary fast-off at ~7A (200ns response). Thermal shutdown activates at 150°C with 30°C hysteresis, and PG asserts after VOUT–VIN gap falls below 280mV with 50µs delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Load Current | 2A continuous - supports USB-C PD, SSD, and display power rails without external FET. |
| RDS(ON) | 50mΩ typical at 5V VCC - minimizes conduction loss and self-heating in compact layouts. |
| Input Voltage Range | 0.5V to 5.5V - enables use with single-cell Li-ion, LDO outputs, and low-voltage logic supplies. |
| Shutdown Current | <5µA - preserves battery life in always-on subsystems like automotive infotainment standby. |
| Short-Circuit Response | 200ns - limits voltage droop during hot-plug events in live backplane applications. |
| PG Delay & Threshold | 50µs delay, 140–450mV VOUT–VIN gap - provides reliable power-good signaling for sequenced SoC boot. |
| Thermal Shutdown | 150°C activation, 30°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
MPQ5073GG-Z is housed in a thermally enhanced QFN-12 (2mm × 2mm) package with exposed thermal pad. Pin 1 is marked by index area; pins 6, 11, and exposed pad are VIN; pin 9 is VOUT; pins 7, 8, and 10 are NC but recommended to connect to VOUT for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic interface with 1.3–1.7V threshold; enables/disables power path with 200mV hysteresis. |
| GND (Pin 2) | Power and signal reference | Common return for control circuitry, current sense, and thermal sensing; must be low-impedance. |
| VCC (Pin 3) | Bias supply for internal logic | 3V–5.5V dedicated supply - decoupling capacitor required near pin to stabilize charge pump operation. |
| ILIM (Pin 4) | Current limit programming node | Connects to ground via resistor (e.g., 15kΩ for 2A); sets precise foldback threshold using 33k sense ratio. |
| SS (Pin 5) | Soft-start timing control | Internal 11µA current source charges external capacitor; sets output slew rate (5× SS ramp rate). |
| VIN (Pins 6, 11, Exposed Pad) | Main power input | High-current input path; exposed pad improves thermal dissipation and reduces θJA to 80°C/W. |
| VOUT (Pin 9) | Switched output to load | Delivers regulated current-limited power; connects to output capacitors and load; ties to NC pins for thermal relief. |
| PG (Pin 12) | Push-pull power-good indicator | Drives high to VCC or low to GND - signals valid output voltage with 50µs delay and 60mV hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable current limit | Set via external ILIM resistor (e.g., 13kΩ → 1.7A, 24kΩ → 1.4A), enabling precise margining against peak load transients. |
| Adjustable soft-start slew rate | Determined by SS capacitor (e.g., 100nF → ~5.4ms rise time), preventing inrush-induced rail collapse in high-capacitance loads. |
| Output discharge function | Internal 200Ω pull-down activates on disable - ensures rapid VOUT decay to prevent floating bus states or latch-up in downstream ICs. |
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C junction temperature - validated for automotive cabin and infotainment power domains. |
| Fast short-circuit protection | 200ns detection and turn-off at ~7A - protects upstream sources during connector hot-swap or PCB trace shorts. |
Applications
| USB-C Power Delivery Hub | Automotive Infotainment Display |
|---|---|
|
Use Scenario: Isolates VBUS power to multiple downstream ports while enforcing per-port current limits and sequencing. IC Role / Device Role / Timing Role: Load switch with programmable OCP and PG signaling - manages power enable timing and fault isolation between host controller and Type-C receptacles. Use Value: Eliminates need for discrete MOSFET + sense resistor + comparator; reduces BOM count and layout area by >40% versus discrete solution. |
Use Scenario: Powers LCD backlight and touch controller from 3.3V or 5V domain with controlled startup and fault containment. IC Role / Device Role / Timing Role: Automotive-grade power path manager - coordinates soft-start with display initialization sequence and reports readiness via PG to MCU. Use Value: Meets AEC-Q100 temp and reliability requirements while delivering 50mΩ RDS(ON) to minimize thermal derating in sealed enclosures. |
| Industrial Tablet Main Power Rail | Smart SSD Module Enable |
|
Use Scenario: Enables main SoC core voltage rail after PMIC sequencing, with inrush limiting during cold boot and hot-swap recovery. IC Role / Device Role / Timing Role: High-efficiency load switch with thermal shutdown - acts as final power gate before DC/DC converter input, responding to EN from system controller. Use Value: <5µA shutdown current extends battery runtime in sleep mode; 200ns short-circuit response prevents brownout during field-replaceable module insertion. |
Use Scenario: Controls power to NVMe SSD module in edge gateway, with current limiting to protect PCIe slot and detect failed drives. IC Role / Device Role / Timing Role: Programmable current monitor and switch - sets 2A limit matching SSD spec, reports PG to host upon stable VDD, and disables on overcurrent. Use Value: Replaces discrete current-limiting circuit; enables firmware-controlled drive enable/disable with real-time fault visibility via PG and thermal status. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22919DCKR | Fixed 2A current limit, no ILIM programming; 44mΩ RDS(ON); no output discharge; PG open-drain only. | Lacks programmability and discharge function - suitable for simpler, cost-sensitive consumer tablets where fixed limit suffices. | Select when design requires lowest RDS(ON) and minimal external components, but can accept fixed current limit and no VOUT discharge. |
| RT9742AGJ5 | 2.5A max, 35mΩ RDS(ON), AEC-Q100 Grade 2 (–40°C to +105°C), no soft-start adjustment - SS pin fixed. | Lower max temp rating and non-adjustable soft-start - fits less demanding automotive zones (e.g., body control) but not under-hood. | Choose for higher current headroom and lower conduction loss where ambient temperature stays ≤105°C and fixed slew rate is acceptable. |
Compared with TPS22919DCKR and RT9742AGJ5, MPQ5073GG-Z uniquely combines AEC-Q100 Grade 1 qualification, resistor-programmable current limit, adjustable soft-start, and integrated output discharge - making it optimal for thermally constrained, safety-critical, and multi-rail portable automotive systems.
Availability
MPQ5073GG-Z is available at Aetrix Electronics and suitable for notebook power management, automotive display modules, industrial tablet main rails, and smart SSD enable circuits requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MPQ5073GG-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 MPQ5073 belongs to MPS's automotive-qualified load switch product line, engineered specifically for robust, space-efficient power path control in portable and vehicular electronics where reliability, thermal efficiency, and programmability are critical.
FAQ
What is the minimum input voltage supported by MPQ5073GG-Z?
The MPQ5073GG-Z operates down to 0.5V input voltage, enabling compatibility with deeply discharged single-cell Li-ion batteries and low-dropout regulator outputs. This allows use in ultra-low-power wake-up circuits and energy-harvesting subsystems where rail voltage may dip below 1V during transient conditions.
How do I calculate the ILIM resistor value for a 2A current limit?
Use the formula ILIMIT = (1 ÷ RILIM) × 33000, where RILIM is in ohms and ILIMIT in amperes. For 2A, RILIM = 33000 ÷ 2 = 16.5kΩ - a standard 16.5kΩ or 16.2kΩ resistor yields ~2.03A. Confirm with thermal margin using worst-case RDS(ON) and load duty cycle.
Does MPQ5073GG-Z require a separate VCC supply?
Yes - VCC (Pin 3) must be supplied with a clean 3V–5.5V bias independent of VIN. It powers the internal charge pump, control logic, and PG driver. Bypassing VCC with a 1µF ceramic capacitor placed within 2mm of the pin is mandatory for stable operation and fast turn-on.
Can the PG pin drive an LED directly?
No - PG is a push-pull output rated for 3.2V high and 0.3V low at 1mA sink/source, but lacks current drive capability for LEDs. It is intended for logic-level signaling to microcontrollers or PMICs. An external buffer or current-limiting resistor + transistor stage is required for LED indication.
Is the exposed thermal pad electrically connected?
Yes - the exposed pad (Pins 6, 11, and thermal pad) is internally connected to VIN. It must be soldered to a large copper pour tied to the main VIN plane to achieve specified θJA = 80°C/W and sustain 2A continuous current without thermal shutdown.
What happens during short-circuit recovery?
Upon short-circuit detection (~7A), MPQ5073GG-Z disables the FET for 80µs, then re-enables at reduced current limit. If the fault persists, it repeats this cycle until thermal shutdown triggers at 150°C. Recovery is automatic once the short is removed - no reset or EN toggle required.
Does MPQ5073GG-Z support reverse current blocking?
No - the device contains a single N-channel MOSFET with source tied to VIN and drain to VOUT, so it does not block reverse current flow from VOUT to VIN. External reverse-blocking diodes or back-to-back FET configurations are required if bidirectional isolation is needed.
MPQ5073GG-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Package/Case:
- 12-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- -
- Voltage - Load:
- 0.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- 0.5V ~ 5.5V
- Current - Output (Max):
- 2A
- Rds On (Typ):
- 50mOhm
- Input Type:
- CMOS
- Features:
- Slew Rate Controlled
- Fault Protection:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (2x2)
MPQ5073GG-Z FAQ
1.How can I place an order for MPQ5073GG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ5073GG-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 MPQ5073GG-Z reliable?
The price and inventory of MPQ5073GG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ5073GG-Z is usually 5 days.
3.What payment methods are accepted for MPQ5073GG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ5073GG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ5073GG-Z?
MPQ5073GG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ5073GG-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 MPQ5073GG-Z?
For technical support, including MPQ5073GG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ5073GG-Z requirements.
6.How does Aetrix verify that MPQ5073GG-Z is sourced from the original manufacturer or authorized distributors?
All MPQ5073GG-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 MPQ5073GG-Z meets industry standards.
7.What is the process for return or replacement of MPQ5073GG-Z?
All MPQ5073GG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ5073GG-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 MPQ5073GG-Z part is unused and in its original packaging.
Return procedure for MPQ5073GG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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