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

Monolithic Power Systems Inc. MP2495DS-LF-Z

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

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Part No.:: MP2495DS-LF-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

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

Datasheet:: MP2495DS-LF-Z.pdf

Description:: IC REG BUCK ADJ 2A 16SOIC

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Product details

Overview

MP2495DS-LF-Z 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, and features 700kHz fixed-frequency operation, 0.25Ω internal high-side MOSFET, and cycle-by-cycle current limiting - deployed in automotive cigarette lighter adapters and USB power supplies.

For engineers reviewing the MP2495DS-LF-Z datasheet, MP2495DS-LF-Z pinout, MP2495DS-LF-Z application, or MP2495DS-LF-Z equivalent, key selection criteria include its 100V surge survivability, DCR- or resistor-based current sensing architecture, SOIC16 thermal performance (θJA = 80°C/W), and dual-loop regulation (voltage + current) for linear charger power stages.

Technical Context

The MP2495 operates as a current-mode synchronous buck converter with a dedicated load current limiting loop that regulates output current via ISP/ISN differential sensing at 100mV threshold. Its main control loop uses an error amplifier referenced to a 0.805V bandgap, with slope compensation and 700kHz oscillator timing.

Integrated 100V input overvoltage protection is implemented via a dedicated CTR-controlled clamp circuit with 0.3Ω on-resistance, enabling survival of 80V/100ms transients without external Transorbs. The device combines voltage regulation and current limiting in one IC, eliminating need for separate current-sense amplifiers or external OVP devices.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	6.5V to 16V continuous; survives 80V/100ms transient surges - enables direct connection to automotive battery rails without external clamping.
Output Current Limit	Programmable up to 2.6A peak (typical); set via ISP/ISN differential voltage (100mV threshold) using sense resistor or inductor DCR - supports precise constant-current mode for battery charging.
Switching Frequency	Fixed 700kHz ±20%; enables compact magnetics and low-output-ripple designs with standard 10–12μH inductors.
Feedback Reference	0.805V ±2.5% (typical); sets output voltage via external resistor divider - ensures tight regulation across temperature and line variations.
Internal High-Side R_DS(ON)	0.25Ω (typical); reduces conduction loss and thermal stress at 2A load - eliminates need for external high-voltage MOSFETs.
OVP Switch R_ON	0.3Ω (typical); clamps input surges by diverting excess energy through internal switch - replaces discrete 100V Transorb diodes in space-constrained designs.
Efficiency @ 5V/500mA	95% (typical); achieved with ceramic output capacitors and low-R_DS(ON) switch - minimizes thermal footprint in sealed enclosures.

Pinout & Package

The MP2495DS-LF-Z is housed in a thermally enhanced 16-pin SOIC package (JEDEC MS-012 AC), with θ_JA = 80°C/W and θ_JC = 30°C/W on a 4-layer PCB. Pin 1 is marked with a dot; pins 6 and 11 are no-connect (N/C).

Pin/Terminal	Circuit Role	Design Meaning
1 FB	Feedback input	Connects to resistor divider tap; regulates output voltage to 0.805V reference - sensitive node requiring short, noise-free routing.
2 SS	Soft-start & current-limit compensation	External capacitor sets soft-start time and stabilizes current regulation loop bandwidth (<1kHz) - critical for controlled current ramp during fault recovery.
3 ISP / 4 ISN	Differential current sense inputs	Sense voltage drop across external resistor or inductor DCR; 100mV threshold triggers constant-current mode - enables accurate, lossless current programming.
5 CTR	OVP clamp control	Connects to zener diode cathode; sets clamp voltage equal to nominal output - determines maximum VDD during surge events.
7,8 IN	High-voltage input supply	Parallel pins accept up to 100V surge; feed internal OVP switch and power stage - designed for direct connection to unregulated automotive bus.
9,10 OUT	VDD bypass & OVP switch output	Provides regulated internal supply and serves as drain of OVP switch - must be decoupled with ≥4.7μF ceramic capacitor near pin.
12 BST	Bootstrap supply	Forms floating gate drive for high-side switch via SW-BST capacitor - requires 0.1μF ceramic capacitor with low ESR for reliable 5V gate overdrive.
13 SW	Switch node	Drives external inductor; carries full switching current - high-di/dt node requiring short, wide trace and separation from analog signals.
14 VDD	Main power supply input	Input to internal LDO and logic; also drain of OVP switch - shares pin 9/10 OUT; must be decoupled locally.
15 GND	Power and signal ground	Reference for FB, ISP/ISN, and EN; must be isolated from high-current return paths to avoid noise coupling into regulation loops.
16 EN	Enable control	Active-high logic input; 1.8V min high threshold - allows system-level power sequencing and standby mode control.

Key Features

Feature	Design Value
Integrated 100V load dump protection	Replaces discrete Transorbs and TVS diodes; clamps 80V/100ms surges with <0.3Ω on-resistance - reduces BOM count and PCB area in automotive front-end designs.
Programmable 2A output current limit	Set via ISP/ISN differential voltage (100mV threshold) using either precision resistor or inductor DCR - enables flexible constant-current operation without external sense amps.
Stable with ceramic output capacitors	Compensated for low-ESR ceramics (X5R/X7R); eliminates need for electrolytic or tantalum caps - improves reliability and lifetime in high-temp environments.
Fixed 700kHz switching frequency	Enables use of small 10–12μH shielded inductors; reduces size vs. lower-frequency alternatives while maintaining >95% efficiency at 500mA.
Thermal shutdown + cycle-by-cycle current limiting	Protects against sustained overload and short-circuit faults; resets automatically after cooling - ensures robustness in unattended industrial or automotive deployments.

Applications

USB Power Supplies

Automotive Cigarette Lighter Adapters

Use Scenario: 12V vehicle battery powering 5V/2A USB-A ports for mobile device charging.

IC Role / Device Role / Timing Role: Primary DC-DC regulator with integrated surge protection and current limiting - replaces discrete buck controller + Transorb + current-sense circuit.

Use Value: Survives cold-crank (6.5V) and load-dump (80V) events per ISO 7637-2; delivers stable 5V/2A with <±1% regulation and 95% efficiency at mid-load.

Use Scenario: Compact 12V-to-5V adapter plugged into vehicle cigarette lighter socket, exposed to ignition transients and vibration.

IC Role / Device Role / Timing Role: Single-chip power management IC handling input conditioning, regulation, and fault protection - eliminates need for external OVP and current-limit ICs.

Use Value: SOIC16 package fits tight mechanical envelopes; 0.25Ω R_DS(ON) minimizes thermal rise at 2A; EN pin enables ignition-synchronized power-on/off.

Power Supply for Linear Chargers

Industrial 24V-to-12V Point-of-Load Converter

Use Scenario: Pre-regulator feeding linear charger IC (e.g., TP4056) in portable medical or test equipment requiring precise current-limited input.

IC Role / Device Role / Timing Role: Constant-voltage/constant-current source with programmable I_LIM - provides clean, current-limited 5V rail to downstream linear regulator.

Use Value: ISP/ISN sensing enables ±3% current accuracy; SS pin allows controlled current ramp to prevent inrush into linear stage; 0.805V FB reference ensures tight CV regulation.

Use Scenario: DIN-rail mounted industrial controller converting 24V bus to 12V for sensor biasing and communication interfaces under EMI-heavy factory conditions.

IC Role / Device Role / Timing Role: Robust step-down regulator with built-in surge immunity - withstands 70V/100ms transients per IEC 61000-4-5 Level 3.

Use Value: 100V absolute max rating and thermal shutdown ensure uptime in harsh environments; fixed 700kHz frequency simplifies EMI filtering design.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage buck regulator with current limiting applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM5164QPWPRQ1	42V max input, no integrated OVP switch; requires external current-sense amp for programmable current limit.	Targeted at lower-voltage automotive domains (e.g., infotainment); lacks 100V surge tolerance.	Select when input stays below 42V and board space allows external sensing components.
TPS54240DGQR	40V max input, no integrated OVP; uses external high-side FET and current-sense resistor - higher BOM cost and layout complexity.	Designed for cost-sensitive industrial SMPS where surge immunity is handled upstream.	Choose only if existing design uses TI ecosystem and 40V input ceiling is guaranteed.

Compared with LM5164QPWPRQ1 and TPS54240DGQR, the MP2495DS-LF-Z uniquely integrates 100V OVP clamping and ISP/ISN current sensing in one SOIC16 package - reducing component count by ≥4 parts and eliminating layout-sensitive analog sensing paths required by alternatives.

Availability

MP2495DS-LF-Z is available at Aetrix Electronics and suitable for automotive power supplies, USB charging adapters, and industrial point-of-load converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2495DS-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP2495 belongs to MPS's high-voltage DC-DC regulator product line, engineered specifically for automotive and industrial systems needing integrated surge protection, precise current limiting, and minimal external component count.

FAQ

What is the maximum transient voltage the MP2495DS-LF-Z can survive?

The MP2495DS-LF-Z is rated to survive 80V transients for 100ms duration and has an absolute maximum input rating of 100V. Its integrated OVP switch clamps surges using the CTR pin and a zener diode, eliminating need for external Transorbs. This capability meets ISO 7637-2 Pulse 5a requirements for automotive 12V systems.

How is output current limit programmed on the MP2495DS-LF-Z?

Output current limit is set by the differential voltage between ISP and ISN pins, with regulation triggered at 100mV (typical). A sense resistor (R_SENSE = 100mV/I_LIM) or inductor DCR can be used. For example, a 50mΩ resistor programs 2.0A limit. The SS pin capacitor sets loop bandwidth and soft-start behavior during current limiting.

Does the MP2495DS-LF-Z require an external bootstrap diode?

No external bootstrap diode is required. The MP2495DS-LF-Z includes an on-chip regulator that charges the BST capacitor from VDD. A 0.1μF ceramic capacitor between BST and SW is mandatory. An optional external diode from IN or OUT to BST may be added only if the internal regulator cannot maintain sufficient gate drive under heavy load or high ambient temperature.

What is the recommended output voltage range for stable operation?

The MP2495DS-LF-Z supports output voltages from 0.8V to 15V. When VIN ≤ 16.5V, VOUT is limited to (VIN – 1.5V); when VIN > 16.5V, VOUT can be set up to 15V. For best stability and efficiency, outputs between 3.3V and 12V are recommended using standard 1% feedback resistors and X5R/X7R ceramic capacitors.

Can the MP2495DS-LF-Z operate in forced PWM mode?

No, the MP2495DS-LF-Z does not support forced PWM mode. It operates exclusively in current-mode PWM with automatic frequency foldback below 250mV FB voltage during short-circuit conditions. This preserves regulation integrity and prevents subharmonic oscillation without requiring external mode-control pins.

What thermal derating applies above 25°C ambient?

With θ_JA = 80°C/W on a standard 4-layer PCB, the MP2495DS-LF-Z dissipates up to 1.56W at 25°C. For every 1°C rise in ambient temperature, allowable power drops by 19.5mW. At 85°C ambient, max continuous power is ~0.39W - requiring careful thermal design, heatsinking, or load reduction in high-temp enclosures.

Is the EN pin compatible with 3.3V microcontroller GPIO?

Yes. The EN pin has a 1.8V minimum high threshold and draws only ±10μA bias current, making it directly compatible with 3.3V or 5V logic. Pulling EN low disables the IC, reducing quiescent current to 4–10μA. No level-shifting is needed for common MCU interfaces.

MP2495DS-LF-Z 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):: 6.5V

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-Z FAQ

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

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

The price and inventory of MP2495DS-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 MP2495DS-LF-Z is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your MP2495DS-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 MP2495DS-LF-Z?

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

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

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

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

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

Return procedure for MP2495DS-LF-Z:

1.Submit a request within 90 days.

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

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