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Monolithic Power Systems Inc. MP2496GR-Z
- Part No.:
- MP2496GR-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 26-PowerVFQFN
- Datasheet:
-
MP2496GR-Z.pdf
- Description:
- 2.5A, 36V, FREQUENCY SELECTABLE
- Quantity:
- Payment:
- Shipping:
Inventory:3,036
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Product details
Overview
MP2496GR-Z from Monolithic Power Systems is a 36V, 2.5A synchronous step-down converter with integrated USB charging port identification (BC1.2 DCP, Divider, and 1.2V/1.2V modes), 5V fixed output, programmable line-drop compensation, and hiccup-mode over-current protection. It delivers regulated 5V/2.5A to USB loads in automotive cigarette-lighter adapters and linear-charger power supplies.
For engineers reviewing the MP2496GR-Z datasheet, MP2496GR-Z pinout, MP2496GR-Z application, or MP2496GR-Z equivalent, key selection criteria include its 7–36V input range, selectable 150/250/350kHz switching frequency, ±8kV HBM ESD rating on DP/DM/USB pins, and QFN-26 (4mm×4mm) thermal performance with θJA = 44°C/W.
Technical Context
The MP2496GR-Z integrates two functional blocks: a peak-current-mode synchronous buck regulator with internal 40mΩ/32mΩ HS/LS MOSFETs and a dedicated USB current-limit switch with 24mΩ RDS(ON), BC1.2 auto-detection logic, and dynamic OVP threshold adjustment based on load current.
Its control architecture includes an internal 5V VCC LDO, bootstrap gate driver with UVLO (2.2V rising), soft-start (1.65ms), and independent hiccup timers for buck (3ms ON / 8.5s OFF) and USB (3ms ON / 8.5s OFF) over-current events - all operating across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 36V - supports wide automotive battery transients and industrial 24V rails without external pre-regulation. |
| Output Voltage | Fixed 5V ±1% - tightly regulated for USB compliance; includes programmable line-drop compensation up to 500mV at 2.4A. |
| Continuous Output Current | 2.5A - delivered to USB port via integrated 24mΩ switch; buck section supports same current with <150mV dropout at full load. |
| Switching Frequency | Selectable 150/250/350kHz - enables optimization of size (inductor/capacitor) vs. efficiency vs. EMI in compact layouts. |
| USB Charging Modes | BC1.2 DCP, Divider (2.7V/2.7V), and 1.2V/1.2V - eliminates need for external ID resistors or microcontroller-based detection. |
| ESD Rating | ±8kV HBM on USB, DP, DM - ensures robustness against electrostatic discharge during cable insertion in consumer/automotive environments. |
| Thermal Shutdown | 165°C with 20°C hysteresis - protects silicon die during sustained overload or poor PCB thermal design; resumes operation at ~145°C. |
Pinout & Package
MP2496GR-Z is housed in a thermally enhanced QFN-26 package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (pin 16/17 recommended to connect to OUT for improved heat dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | USB | USB power output terminal - connects directly to USB connector VBUS; rated for 2.5A continuous with foldback current limiting. |
| 3, 15, 25 | OUT | Buck output node - supplies 5V to USB switch input; also serves as feedback reference point for regulation and line-drop compensation. |
| 4, 14 | IN | Main power input - accepts 7–36V; internal high-side FET drain; requires low-ESR input capacitor placed adjacent to these pins. |
| 5, 6, 12, 13 | PGND | Power ground return - low-impedance path for buck inductor current and USB switch; must be connected to large copper plane with multiple vias. |
| 7 | FREQ | Frequency select - float = 150kHz, GND = 250kHz, VCC = 350kHz; sets switching frequency without external resistor. |
| 8 | EN | Enable control - active-high logic; 1.43V typical threshold with 140mV hysteresis; internal 1MΩ pull-down allows floating shutdown. |
| 9, 10, 26 | SW | Switch node - connects to buck inductor; carries high di/dt; requires short, wide trace and tight layout to minimize EMI and voltage spikes. |
| 11 | BST | Bootstrap supply - connects to 0.1µF ceramic capacitor between SW and BST to drive high-side MOSFET gate above IN rail. |
| 18 | AGND | Analog ground - reference for error amplifier and sensing circuits; must be tied to PGND at single point near IC to avoid noise coupling. |
| 19 | VCC | Internal 5V LDO output - powers control circuitry; requires 0.22µF ceramic decoupling capacitor placed within 2mm of pin. |
| 20 | VDROP | Line-drop compensation select - GND = 130mV, float = 400mV, VCC = 280mV compensation amplitude at 2.4A load. |
| 23 | DP | USB D+ data line - used for BC1.2 handshaking; internal 125Ω short resistance enables DCP detection without external components. |
| 24 | DM | USB D– data line - paired with DP for charger identification; supports divider mode (2.7V) and 1.2V/1.2V mode detection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB DCP Detection | Supports BC1.2, Divider, and 1.2V/1.2V modes with no external resistors - reduces BOM count and eliminates firmware dependency. |
| Programmable Line-Drop Compensation | Three-level selection (GND/float/VCC) adjusts compensation from 130–500mV - maintains 5V ±5% at load end across long cables or high-impedance traces. |
| Synchronous Buck with Low RDS(ON) | 40mΩ HS / 32mΩ LS internal MOSFETs - achieves >90% efficiency at 12V→5V/2A, minimizing thermal stress in space-constrained designs. |
| Dual Independent Hiccup Protection | Separate 3ms ON / 8.5s OFF timers for buck and USB over-current - prevents thermal runaway while allowing automatic recovery after fault removal. |
| Robust USB Interface ESD | ±8kV HBM on USB, DP, DM pins - meets IEC 61000-4-2 Level 4 requirements without external TVS diodes in most applications. |
Applications
| Automotive Cigarette Lighter Adapter | USB-C Compatible Wall Adapter (Legacy USB-A Port) |
|---|---|
|
Use Scenario: 12V vehicle battery powers dual-port adapter delivering 5V/2.5A to smartphones via USB-A. IC Role / Device Role / Timing Role: MP2496GR-Z acts as primary DC-DC regulator and USB port controller, handling input transients, line-drop compensation, and BC1.2 negotiation. Use Value: Eliminates need for separate USB ID IC and discrete buck controller; maintains stable 5V at connector despite 150mΩ cable resistance. |
Use Scenario: Compact wall adapter converts 100–240V AC to 5V DC for legacy USB-A devices using flyback + MP2496GR-Z secondary stage. IC Role / Device Role / Timing Role: Provides post-regulation, precise 5V output, and intelligent USB port identification downstream of isolated AC-DC stage. Use Value: Enables BC1.2-compliant fast charging without microcontroller; line-drop compensation ensures USB spec compliance even with low-cost PCB traces. |
| Industrial Linear Charger Power Supply | Smart Home Hub USB Power Management |
|
Use Scenario: Industrial dock station supplies 5V/2.5A to linear battery charger IC (e.g., MCP73831) for Li-ion packs in portable test equipment. IC Role / Device Role / Timing Role: Delivers tightly regulated 5V with hiccup OCP and thermal shutdown - critical for safe charging under variable ambient conditions. Use Value: Integrated OVP (6V trip) and discharge resistor prevent overvoltage damage to sensitive charger ICs during transient faults. |
Use Scenario: Smart speaker/hub provides powered USB-A port for firmware updates, peripherals, or accessory charging in always-on IoT environment. IC Role / Device Role / Timing Role: Functions as intelligent USB power manager with auto-detection, ESD-hardened DP/DM, and low-quiescent 1μA shutdown current. Use Value: ±8kV HBM rating ensures reliability during frequent cable plugging; 1μA shutdown current preserves system standby power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power delivery and step-down conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP24894GQZ | Higher 4A USB current limit; supports QC 2.0/3.0 negotiation via I²C; no BC1.2-only mode; larger QFN-32 package. | Requires MCU firmware for protocol handshaking; not drop-in for BC1.2-only use cases. | Choose when USB PD or proprietary fast-charge protocols are required; avoid if BC1.2 simplicity is prioritized. |
| TPS62745DSSR | Lower 1A USB output; 2.5–5.5V input only; no USB detection logic; ultra-low 360nA quiescent current. | Designed for battery-powered wearables, not automotive/industrial 7–36V inputs. | Choose only for ultra-low-power, single-cell battery systems; incompatible with 12V/24V input requirements. |
Compared with MP2496GR-Z, MP24894GQZ adds protocol flexibility at cost of complexity and footprint, while TPS62745DSSR trades input range and USB intelligence for nanoamp quiescent current - neither matches MP2496GR-Z's balance of wide-input, BC1.2 autonomy, and thermal robustness in QFN-26.
Availability
MP2496GR-Z is available at Aetrix Electronics and suitable for automotive cigarette lighter adapters, USB wall adapters, industrial linear charger power supplies, and smart home hub USB management requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MP2496GR-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 core expertise in DC-DC conversion, motor drivers, and USB power delivery solutions.
The MP2496 belongs to MPS's USB-integrated power management product line, designed specifically to consolidate buck regulation and BC1.2-compliant charging port functionality into a single QFN package for cost-sensitive, space-constrained power adapter applications.
FAQ
What is the maximum allowable input voltage for MP2496GR-Z?
The absolute maximum input voltage (VIN) is 40V, but the recommended operating range is 7V to 36V. Operation above 36V risks exceeding the 43V transient rating on the SW pin (VIN + 0.3V for <10ns), and may trigger UVLO hysteresis or degrade long-term reliability. Sustained operation at 36V is supported per datasheet specifications.
How does line-drop compensation work and how is it configured?
Line-drop compensation uses the internal current-sense signal from the USB switch to inject a proportional voltage offset into the buck feedback loop, counteracting voltage drop across PCB traces or cables. It is configured via the VDROP pin: grounded = 130mV compensation, floating = 400mV, tied to VCC = 280mV - all measured at 2.4A load per datasheet Table 1.
Can MP2496GR-Z support USB Battery Charging Specification 1.2 without external components?
Yes. MP2496GR-Z natively supports BC1.2 DCP, Divider (2.7V/2.7V), and 1.2V/1.2V modes using internal comparators and pull-up/down networks on DP/DM. No external resistors, microcontrollers, or ID detection ICs are required - confirmed by functional block diagram and "Auto-Detection" section on page 13 of Rev. 1.0 datasheet.
What is the thermal performance of MP2496GR-Z in a standard 4-layer PCB layout?
On a JEDEC-standard 4-layer PCB (JESD51-7), MP2496GR-Z has θJA = 44°C/W and θJC = 9°C/W. With 2.5A load at 12V input, typical power dissipation is ~0.8W, resulting in ~35°C rise above ambient - well below the 125°C max operating junction temperature. Thermal pad connection to OUT improves dissipation further.
Does MP2496GR-Z provide output discharge functionality, and when is it active?
Yes - both buck and USB sections include active discharge paths. The buck output discharges via an internal resistor when EN is low or VIN drops below UVLO (4.7V); USB output discharges similarly. Discharge activates only during shutdown and ceases once VCC falls below 1V, preventing unnecessary power loss during normal operation.
What are the exact pin configurations for frequency selection on MP2496GR-Z?
FREQ pin (pin 7) selects switching frequency as follows: left floating = 150kHz (typical 150kHz, min 110kHz/max 185kHz over temp), pulled to GND = 250kHz (min 190kHz/max 330kHz), pulled to VCC = 350kHz (min 300kHz/max 420kHz). These values are specified in Electrical Characteristics Table on page 4 of the datasheet.
Is MP2496GR-Z RoHS-compliant and lead-free?
Yes. MP2496GR-Z is fully RoHS-compliant, lead-free, and halogen-free per MPS corporate policy and EU Directive 2011/65/EU. This is explicitly stated in the "All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive" footnote on page 2 of the datasheet.
MP2496GR-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP2496
- Package/Case:
- 26-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 2.5A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Remote On/Off
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 26-QFN (4x4)
- Control Features:
- Enable, Active High
- Approval Agency:
- -
- Standard Number:
- -
MP2496GR-Z FAQ
1.How can I place an order for MP2496GR-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2496GR-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 MP2496GR-Z reliable?
The price and inventory of MP2496GR-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2496GR-Z is usually 5 days.
3.What payment methods are accepted for MP2496GR-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2496GR-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2496GR-Z?
MP2496GR-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2496GR-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 MP2496GR-Z?
For technical support, including MP2496GR-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2496GR-Z requirements.
6.How does Aetrix verify that MP2496GR-Z is sourced from the original manufacturer or authorized distributors?
All MP2496GR-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 MP2496GR-Z meets industry standards.
7.What is the process for return or replacement of MP2496GR-Z?
All MP2496GR-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2496GR-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 MP2496GR-Z part is unused and in its original packaging.
Return procedure for MP2496GR-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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