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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MP2495DS-LF-P

Name: MP2495DS-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP2495DS-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP2495DS-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: MP2495DS-LF-P.pdf

Description:: IC REG BUCK ADJ 2A 16SOIC

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Product details

Overview

MP2495DS-LF-P from Monolithic Power Systems is a monolithic 100V load dump-protected buck regulator with integrated overvoltage protection switch and programmable 2A output current limit. It delivers up to 2.0A continuous output current across 6.5V–16V input, supports 0.8V–15V adjustable output voltage, features fixed 700kHz switching frequency, and integrates 0.25Ω high-side MOSFET for automotive cigarette lighter adapters and USB power supplies.

For engineers reviewing the MP2495DS-LF-P datasheet, MP2495DS-LF-P pinout, MP2495DS-LF-P application, or MP2495DS-LF-P equivalent, this device offers verified 100V transient survival (80V/100ms), DCR- or resistor-based current sensing, cycle-by-cycle overcurrent protection, thermal shutdown, and SOIC16 package compatibility for rugged industrial and automotive DC-DC designs.

Technical Context

The MP2495DS-LF-P implements a current-mode synchronous buck architecture with integrated 100V-rated input surge protection switch and independent current-limit regulation loop. Its feedback reference is 0.805V ±2%, and it uses ISP/ISN differential sensing with 100mV threshold to enable precise output current control without external shunt power loss.

It combines dual-loop control: the main FB loop regulates output voltage via 0.8V bandgap reference and error amplifier, while the current-limit loop pulls down SS pin when V_ISP–V_ISN ≥100mV, enabling constant-current operation. The 700kHz oscillator includes fold-back frequency reduction below 250mV FB to improve short-circuit response.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	6.5V to 16V continuous; survives 80V/100ms transients - enables direct connection to automotive battery rails during load dump events.
Output Current	Programmable up to 2.0A continuous - set via external sense resistor or inductor DCR, with 2.2A–3.0A current limit range.
Output Voltage Range	0.8V to 15V adjustable - configured by FB resistor divider; supports USB 5V, industrial 3.3V/12V, and custom rail generation.
Switching Frequency	Fixed 700kHz ±20% - balances EMI performance and inductor size; supports compact 12μH designs with <30% ripple.
Internal MOSFET R_DS(ON)	0.25Ω typical - reduces conduction loss at 2A, enabling >95% efficiency at 500mA (V_OUT=5V).
Current Sense Threshold	100mV ±10mV - provides accurate, low-loss current limiting without shunt resistor power dissipation.
Thermal Shutdown	150°C junction temperature - protects die under overload or poor heatsinking; auto-recovery after cooldown.

Pinout & Package

The MP2495DS-LF-P is housed in a 16-pin SOIC package with exposed pad not electrically connected. Pin layout follows JEDEC MS-012 AC standard, with dual IN and OUT pins for high-current routing and dedicated ISP/ISN differential inputs for precision current sensing.

Pin/Terminal	Circuit Role	Design Meaning
1 FB	Feedback Input	Connects to resistor divider tap; sets output voltage via 0.805V reference; triggers fold-back mode below 250mV during fault.
2 SS	Soft-Start & Compensation	External capacitor sets soft-start ramp and dominates current-limit loop bandwidth (<1kHz); pulled low during current regulation.
3 ISP / 4 ISN	Differential Current Sense	Sense voltage across external resistor or inductor DCR; 100mV threshold initiates constant-current regulation.
5 CTR	Clamp Control Reference	Tied to Zener diode matching nominal output voltage; defines OVP clamp level to prevent VDD overvoltage during surge.
7–8 IN	High-Voltage Input	Dual-pinned for low-inductance connection to 100V-tolerant input rail; accepts load dump transients up to 80V/100ms.
9–10 OUT	VDD Supply Output	Provides regulated internal supply; connects to VDD pin; sourced from internal OVP switch output.
12 BST	Bootstrap Supply	Forms floating gate drive for high-side MOSFET via SW–BST capacitor; on-chip regulator precharges BST node.
13 SW	Switch Node	Drives external inductor; high dv/dt node requiring tight layout; connects to BST capacitor and external Schottky diode cathode.
14 VDD	Internal Supply Input	Power input for control circuitry; also drain of internal OVP switch; bypassed with ceramic capacitor near pin.
15 GND	Analog/Digital Ground	Reference for FB, ISP/ISN, and EN; must be isolated from high-switching-current paths to avoid noise coupling.
16 EN	Enable Control	Active-high logic input; 1.8V min high threshold; draws <10μA in shutdown; controls full converter start/stop.

Key Features

Feature	Design Value
Integrated 100V Load Dump Protection	Survives 80V/100ms automotive transients without external Transorb; eliminates need for discrete TVS and reduces BOM count.
Programmable Output Current Limit	Set via ISP/ISN with 100mV threshold - avoids power loss in shunt resistors and enables precise current-limited USB charging.
Stable with Ceramic Output Capacitors	Designed for low-ESR X5R/X7R ceramics - eliminates electrolytic capacitors, improves reliability and temperature stability.
Fixed 700kHz Switching Frequency	Enables use of small 12μH inductors and reduces filter component size while maintaining EMI compliance in compact layouts.
Cycle-by-Cycle Overcurrent Protection	Prevents MOSFET failure during short circuits by limiting peak inductor current each switching cycle.

Applications

Automotive Cigarette Lighter Adapters

USB Power Delivery Modules

Use Scenario: 12V vehicle battery powering 5V/2A USB-A ports during engine cranking and load dump events.

IC Role / Device Role / Timing Role: Primary buck regulator with integrated 100V OVP switch and programmable current limit for robust USB port protection.

Use Value: Eliminates external TVS diodes and discrete current-limit ICs; maintains stable 5V output even during 80V/100ms transients.

Use Scenario: Compact wall adapter or portable power bank delivering regulated 5V/2A to smartphones and peripherals.

IC Role / Device Role / Timing Role: High-efficiency step-down controller with soft-start and current-foldback for safe hot-plug and short-circuit handling.

Use Value: Achieves >95% efficiency at 500mA (5V output), supports ceramic output caps for long life, and enables fast transient recovery.

Industrial 24V-to-5V Conversion

Linear Charger Power Supply

Use Scenario: DIN-rail mounted equipment converting 24V industrial bus to isolated 5V logic supply with surge immunity.

IC Role / Device Role / Timing Role: Input-protected buck regulator providing clean, current-limited 5V rail for microcontrollers and sensors.

Use Value: Withstands 70V/100ms transients per spec; 0.25Ω R_DS(ON) minimizes heat rise at full 2A load in confined enclosures.

Use Scenario: Power stage for linear battery chargers requiring tightly regulated, current-limited input to avoid charger IC damage.

IC Role / Device Role / Timing Role: Constant-voltage/constant-current source where ISP/ISN pins enforce precise 2A charge current limit.

Use Value: Replaces discrete op-amp + MOSFET current limiter; eliminates shunt resistor losses and simplifies PCB layout.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck regulator with integrated overvoltage protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ2495DQ-LF-Z	Automotive-grade AEC-Q100 qualified version in 16-pin QFN; same electrical specs but enhanced thermal performance (θ_JA = 40°C/W vs. 80°C/W).	Required for automotive production; supports –40°C to +125°C junction temp with tighter parametric tolerances.	Select for automotive OEM programs needing qualification; not drop-in due to QFN footprint and thermal pad requirements.
LM5164QPWPRQ1	42V max input, no integrated OVP switch; requires external TVS; 1.5A max output; uses external high-side FET.	Lacks 100V surge handling; suitable only for non-load-dump industrial 24V systems with added protection.	Choose only if lower cost and smaller package outweigh loss of integrated protection and reduced current capability.

Compared with MP2495DS-LF-P, the MPQ2495DQ-LF-Z adds AEC-Q100 qualification and better thermal resistance for automotive deployment, while the LM5164QPWPRQ1 sacrifices integrated surge protection and current rating for flexibility in non-automotive 42V systems.

Availability

MP2495DS-LF-P is available at Aetrix Electronics and suitable for automotive cigarette lighter adapters, USB power delivery modules, and industrial 24V-to-5V conversion requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2495DS-LF-P 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 distribution through authorized partners.

The MP2495 belongs to MPS's automotive-grade DC-DC converter product line, engineered specifically for harsh-environment applications requiring integrated surge protection, precise current limiting, and high reliability in space-constrained layouts.

FAQ

What is the maximum transient voltage the MP2495DS-LF-P can withstand?

The MP2495DS-LF-P is rated to survive 80V transients for 100ms duration per its Recommended Operating Conditions. Its absolute maximum input rating is 100V, and the integrated OVP switch clamps VDD to protect internal circuitry during load dump events common in 12V automotive systems.

How is output current programmed without using a power-dissipating shunt resistor?

Output current is programmed by sensing voltage across either an external precision sense resistor or the inductor's DC resistance (DCR). The ISP/ISN pins detect differential voltage; when it reaches 100mV, the current-limit loop activates and regulates output current - eliminating shunt resistor power loss while maintaining accuracy.

Can the MP2495DS-LF-P operate with ceramic output capacitors only?

Yes. The MP2495DS-LF-P is explicitly designed for stability with low-ESR ceramic capacitors (X5R/X7R), as confirmed in the datasheet's "Stable with Low ESR Output Ceramic Capacitors" feature. No electrolytic or tantalum capacitors are required for loop stability or ripple suppression.

What is the role of the CTR pin, and how should it be configured?

The CTR pin sets the clamp voltage for the integrated OVP switch. It must be tied to a Zener diode whose breakdown voltage matches the desired output voltage (e.g., 5.1V Zener for 5V output). This ensures the OVP switch limits VDD to a safe level during input surges without unnecessary power dissipation.

Does the MP2495DS-LF-P support adjustable switching frequency?

No. The MP2495DS-LF-P operates at a fixed 700kHz switching frequency with ±20% tolerance. Frequency cannot be adjusted externally; it is internally generated and optimized for minimal external component count and consistent EMI behavior across operating conditions.

Is thermal shutdown latched or auto-recovering?

Thermal shutdown is auto-recovering. When junction temperature exceeds 150°C, the device halts switching and enters thermal shutdown. Once the die cools below the hysteresis threshold (~140°C), normal operation resumes without requiring an EN pin toggle or power cycle.

What layout practices are critical for reliable ISP/ISN current sensing?

ISP and ISN are high-precision differential inputs requiring matched, short, and shielded traces routed away from noisy nodes (SW, IN, GND power return). Place the sense resistor or DCR network directly adjacent to the IC, minimize parasitic inductance, and avoid sharing ground paths with high-current loops to preserve 100mV threshold accuracy.

MP2495DS-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 18V

Voltage - Input (Max):: 16V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 15V

Current - Output:: 2A

Frequency - Switching:: 700kHz

Synchronous Rectifier:: No

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

MP2495DS-LF-P FAQ

1.How can I place an order for MP2495DS-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP2495DS-LF-P 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 MP2495DS-LF-P reliable?

The price and inventory of MP2495DS-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2495DS-LF-P is usually 5 days.

3.What payment methods are accepted for MP2495DS-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2495DS-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP2495DS-LF-P?

MP2495DS-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP2495DS-LF-P 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 MP2495DS-LF-P?

For technical support, including MP2495DS-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2495DS-LF-P requirements.

6.How does Aetrix verify that MP2495DS-LF-P is sourced from the original manufacturer or authorized distributors?

All MP2495DS-LF-P 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 MP2495DS-LF-P meets industry standards.

7.What is the process for return or replacement of MP2495DS-LF-P?

All MP2495DS-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2495DS-LF-P, 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 MP2495DS-LF-P part is unused and in its original packaging.

Return procedure for MP2495DS-LF-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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