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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

Monolithic Power Systems Inc. MP163BGSE-33-P

Name: MP163BGSE-33-P
Brand: Monolithic Power Systems Inc.
SKU: MP163BGSE-33-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP163BGSE-33-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: AC DC Converters, Offline Switches

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

Datasheet:: MP163BGSE-33-P.pdf

Description:: 700V, NON-ISOLATED, OFFLINE REGU

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MP163BGSE-33-P from Monolithic Power Systems is a 700V non-isolated offline primary-side regulator with integrated 700V MOSFET and 3.3V LDO, supporting buck/boost/buck-boost/flyback topologies. It delivers up to 4W output power, achieves <30mW no-load consumption, and features green-mode operation with frequency foldback and peak-current compression for high light-load efficiency in home appliance standby power supplies.

For engineers reviewing the MP163BGSE-33-P datasheet, MP163BGSE-33-P pinout, MP163BGSE-33-P application, or MP163BGSE-33-P equivalent, key selection criteria include its SOIC16 package, 420mA peak current limit, 14Ω R_DS(on), dual-output CV regulation without optocoupler, and integrated thermal/OLP/SCP protection for cost-sensitive offline AC-DC conversion.

Technical Context

The MP163BGSE-33-P implements primary-side constant voltage (CV) control using feedback sampling via an external capacitor (C3) and internal 2.55V reference, eliminating optocoupler dependency. Its green-mode architecture dynamically reduces switching frequency and peak current under light load to maintain efficiency.

It integrates a 700V vertical DMOS power switch with 14Ω typical R_DS(on), an internal LDO delivering 3.3V at up to 270mA peak, and comprehensive protection including VCC UVLO (5.1–5.8V turn-on), OLP (1.74V FB threshold, 220ms delay), SCP (600mA threshold), and thermal shutdown (150°C trip, 120°C recovery).

Key Specifications

Parameter	Value and Actual Design Meaning
Topology Support	Buck, boost, buck-boost, flyback - enables flexible non-isolated AC-DC converter design without transformer isolation
Integrated HV MOSFET	700V breakdown, 14Ω R_DS(on) - eliminates external HV switch, reduces BOM count and layout complexity
LDO Output	3.3V ±2%, 270mA peak - powers auxiliary circuits (e.g., microcontroller, sensors) directly from main output rail
Peak Current Limit	420mA typical - sets maximum energy per cycle; determines max output power in CCM/DCM modes
No-Load Power	<30mW - meets stringent EU CoC Tier 2 and DOE Level VI standby requirements
Protection Features	Thermal shutdown (150°C), VCC UVLO, OLP (220ms delay), SCP (600mA), open-loop detection (0.5V FB threshold) - ensures robust field reliability
Operating Temp	–40°C to +125°C junction - supports industrial-grade operation in enclosed white goods environments

Pinout & Package

MP163BGSE-33-P is housed in a SOIC16 package with exposed pad for thermal enhancement. Pin assignments are validated per MPS MP163 Rev. 1.02 datasheet (p.12).

Pin/Terminal	Circuit Role	Design Meaning
15 (IN)	LDO input	Accepts 4.3V–17V input; connects to main converter output rail to feed integrated 3.3V LDO
11 (SOURCE)	MOSFET source / ground reference	Common return for VCC, FB, and LDO GND; defines low-side reference for feedback and gate drive
8 (DRAIN)	HV MOSFET drain / HV current source	Connects to rectified AC line (up to 700V); supplies startup current and carries switching current
9 (VCC)	Internal bias supply	Charged by internal HV regulator; powers control circuitry; UVLO thresholds define startup/shutdown windows
10 (FB)	Primary-side feedback input	Monitors sampled output voltage via external RC network; 2.55V internal reference enables optocoupler-free regulation
1, 4, 14 (GND)	LDO ground	Dedicated low-noise ground path for LDO output; isolated from SOURCE to minimize noise coupling
3 (OUT)	LDO output	Delivers regulated 3.3V; requires local ceramic decoupling; dropout ≤1.1V at 150mA
16 (EN)	LDO enable	Active-high logic input (1.48V typ. threshold); allows system-level power sequencing and standby control
2, 5, 6, 7, 12, 13	No connection	Internally unconnected; must remain floating per datasheet - no external tie or pull-up/down

Key Features

Feature	Design Value
Primary-side CV regulation	Eliminates optocoupler and secondary-side TL431, reducing component count by ≥4 and improving long-term stability
Green-mode frequency foldback	Switching frequency drops below 28kHz at light load, enabling <30mW no-load consumption without compromising transient response
Integrated 3.3V LDO	Provides dedicated low-noise auxiliary rail for MCU/sensor bias; avoids need for discrete LDO or resistor-divider + Zener
Self-supplied VCC management	Internal HV current source charges VCC capacitor; eliminates external startup resistor and associated power loss
Leading-edge blanking (LEB)	180ns blanking window prevents false overcurrent triggering during MOSFET turn-on di/dt spikes

Applications

Smart Home Appliance Control

Industrial Sensor Node Power

Use Scenario: Powering microcontroller, display, and communication ICs in washing machine control boards operating from 85–265VAC mains.

IC Role / Device Role / Timing Role: Primary-side offline regulator providing isolated-free 12V main rail and 3.3V LDO output for digital subsystems.

Use Value: Reduces BOM cost by eliminating optocoupler and secondary-side regulator while meeting IEC 60335-1 creepage requirements via layout separation.

Use Scenario: Supplying 3.3V to LoRaWAN sensor nodes in factory automation systems requiring ultra-low standby power.

IC Role / Device Role / Timing Role: Standby power controller delivering <30mW no-load consumption and fast wake-up from deep-sleep states.

Use Value: Extends battery backup runtime during mains failure and enables compliance with EN 50564 low-power mode testing.

White Goods Auxiliary Supply

Consumer Electronics Standby Rail

Use Scenario: Generating 5V/3.3V rails for touch panel, Wi-Fi module, and real-time clock in refrigerator electronics.

IC Role / Device Role / Timing Role: Dual-output CV regulator with integrated LDO supplying both main logic and low-noise analog subsystems.

Use Value: Achieves 78% efficiency at 10% load via peak-current compression, minimizing heat buildup inside sealed compartments.

Use Scenario: Providing always-on 3.3V rail for remote control receiver and IR decoder in TV power supplies.

IC Role / Device Role / Timing Role: Green-mode offline regulator operating in DCM at standby, synchronized to zero-crossing for EMI reduction.

Use Value: Meets ENERGY STAR® v8.0 0.5W no-load requirement with margin, avoiding costly active clamp or burst-mode controllers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar offline primary-side regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP163CGSE-33	Higher 660mA peak current limit, 13.5Ω R_DS(on), same SOIC16 package	Supports >4W output power and higher output current in buck-boost configurations	Select when main rail requires >400mA continuous load or higher surge capability
MP163BGSE-5	Identical package and peak current, but 5V LDO output instead of 3.3V	Direct replacement where 5V auxiliary rail is required for legacy peripherals	Choose only if system-level 5V logic interface exists and 3.3V LDO is not needed

Compared with MP163BGSE-33-P, MP163CGSE-33 offers higher power headroom at identical footprint, while MP163BGSE-5 trades LDO voltage for compatibility with 5V-tolerant interfaces-neither provides pin-compatible 3.3V/420mA functionality without circuit redesign.

Availability

MP163BGSE-33-P is available at Aetrix Electronics and suitable for home appliance control, industrial sensor node power, and consumer electronics standby rail applications requiring stable component supply across multi-year production cycles.

Supply support for MP163BGSE-33-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.

The MP163 product line targets cost-sensitive, non-isolated offline AC-DC conversion in white goods and consumer standby power, emphasizing integration, efficiency, and regulatory compliance without optical feedback.

FAQ

What is the minimum off-time limit for MP163BGSE-33-P?

The minimum off-time limit is 12μs typical, with 9–15μs guaranteed range across temperature. This parameter directly constrains maximum output power in discontinuous conduction mode and governs soft-start behavior during initial power-up sequences.

Does MP163BGSE-33-P require an external startup resistor?

No. The device incorporates an internal high-voltage current source that self-supplies VCC from the DRAIN pin during startup, eliminating the need for an external high-voltage startup resistor and associated power loss.

How is output voltage regulated without an optocoupler?

Regulation uses primary-side sampling: an external capacitor (C3) charges to the output voltage during freewheeling, and the FB pin monitors this sampled voltage against an internal 2.55V reference to adjust switching duty cycle.

What thermal derating applies to the integrated LDO?

The LDO's 270mA peak current is thermally limited; continuous output is capped at ~150mA depending on PCB copper area and ambient temperature. Adding an external series resistor on the IN pin reduces LDO power dissipation and improves thermal margin.

Can MP163BGSE-33-P operate in flyback topology with primary-side regulation?

Yes. The datasheet explicitly supports flyback configuration with primary-side CV control. The FB pin senses reflected output voltage via an auxiliary winding, and the internal error amplifier adjusts switching to maintain regulation without secondary feedback components.

What is the VCC UVLO hysteresis and why does it matter?

VCC UVLO hysteresis is 130–250mV, defined by VCCON (5.1–5.8V) and VCCOFF (5.4–6.0V). This prevents oscillation during brown-out conditions and ensures clean startup/shutdown transitions, critical for reliable operation in unstable mains environments.

Is the EN pin compatible with standard 3.3V GPIO signals?

Yes. The EN pin has a 1.48V typical rising threshold and 1.26V typical falling threshold, providing sufficient margin for direct interfacing with 3.3V logic outputs without level-shifting, enabling simple microcontroller-controlled power sequencing.

MP163BGSE-33-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MP

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Isolation:: Non-Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 700V

Topology:: Boost, Buck, Buck-Boost, Flyback

Voltage - Start Up:: -

Voltage - Supply (Vcc/Vdd):: 5.3V ~ 6.5V

Duty Cycle:: -

Frequency - Switching:: -

Power (Watts):: -

Fault Protection:: Current Limiting, Open Loop, Over Load, Over Temperature, Short Circuit, UVLO

Control Features:: EN, Frequency Control, Soft Start

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

Grade:: -

Qualification:: -

Supplier Device Package:: 16-SOIC

Mounting Type:: Surface Mount

MP163BGSE-33-P FAQ

1.How can I place an order for MP163BGSE-33-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP163BGSE-33-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 MP163BGSE-33-P reliable?

The price and inventory of MP163BGSE-33-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP163BGSE-33-P is usually 5 days.

3.What payment methods are accepted for MP163BGSE-33-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP163BGSE-33-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP163BGSE-33-P?

MP163BGSE-33-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP163BGSE-33-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 MP163BGSE-33-P?

For technical support, including MP163BGSE-33-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP163BGSE-33-P requirements.

6.How does Aetrix verify that MP163BGSE-33-P is sourced from the original manufacturer or authorized distributors?

All MP163BGSE-33-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 MP163BGSE-33-P meets industry standards.

7.What is the process for return or replacement of MP163BGSE-33-P?

All MP163BGSE-33-P units undergo pre-shipment inspection (PSI). If there is an issue with MP163BGSE-33-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 MP163BGSE-33-P part is unused and in its original packaging.

Return procedure for MP163BGSE-33-P:

1.Submit a request within 90 days.

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

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