My Inquiry
My Account
Monolithic Power Systems Inc. MP163BGS-33-Z
- Part No.:
- MP163BGS-33-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
MP163BGS-33-Z.pdf
- Description:
- IC OFFLINE SWITCH MULT TOP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP163BGS-33-Z from Monolithic Power Systems is a 700V non-isolated offline primary-side regulator with integrated 700V MOSFET and 3.3V LDO, delivering up to 4W output power in buck/boost/flyback topologies. It features 420mA peak current limit, 14Ω RDS(on), <30mW no-load consumption, and green-mode frequency foldback for home appliance standby power supplies.
For engineers reviewing the MP163BGS-33-Z datasheet, MP163BGS-33-Z pinout, MP163BGS-33-Z application, or MP163BGS-33-Z equivalent, key selection criteria include primary-side CV regulation accuracy, SOIC8-7B package thermal performance (θJA = 86°C/W), integrated LDO current capability (270mA peak), and OLP/SCP/thermal shutdown protection timing.
Technical Context
The MP163BGS-33-Z implements primary-side constant voltage control using feedback sampling via an external capacitor (C3) and internal 2.55V reference, eliminating optocoupler dependency. Its green-mode operation dynamically reduces switching frequency and peak current under light load, achieving <30mW no-load consumption.
It integrates a 700V vertical DMOS power switch with 14Ω typical RDS(on), a self-biased VCC supply with UVLO (5.1–5.8V turn-on hysteresis), and a dedicated 3.3V LDO with 270mA peak current limit and 1.1V dropout at 150mA - optimized for dual-output auxiliary rail generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 700V drain rating enables direct universal AC input rectification without external HV MOSFET. |
| Peak Current Limit | 420mA typical - sets maximum energy per cycle in CCM/DCM, defining max output power (~4W). |
| MOSFET RDS(on) | 14Ω typical at 25°C - determines conduction loss and thermal rise in high-voltage switching node. |
| LDO Output | 3.3V ±2% at 0A, 180–390mA current limit - powers MCU or logic rails in low-power offline systems. |
| No-Load Consumption | <30mW - meets Energy Star Level VI and EU CoC Tier 2 standby requirements. |
| Protection Features | Thermal shutdown (150°C), OLP (220ms delay), SCP (600mA threshold), open-loop detection (0.5V FB). |
| Package | SOIC8-7B - 8-pin exposed-pad variant with 86°C/W θJA, optimized for cost-sensitive consumer PCB layouts. |
Pinout & Package
MP163BGS-33-Z uses the SOIC8-7B package: 8-pin surface-mount with exposed thermal pad (pin 7 = GND), footprint compatible with JEDEC MS-012AC, and rated for 1.45W continuous power dissipation at +25°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | LDO input | Accepts 4.3V–17V input; connects to buck output or auxiliary winding to feed integrated 3.3V LDO. |
| 2 (SOURCE) | MOSFET source / ground reference | Serves as power ground for VCC and FB; must be low-inductance connection to minimize noise coupling. |
| 4 (DRAIN) | 700V MOSFET drain / HV current source | Connects directly to rectified AC line; handles full HV switching stress and start-up current sourcing. |
| 5 (VCC) | Internal bias supply | Charged by internal HV regulator; requires 1–10μF ceramic capacitor for stable operation and fault recovery. |
| 6 (FB) | Voltage feedback input | Monitors sampled output via RC network; triggers switching when voltage drops below 2.55V reference. |
| 7 (GND) | LDO ground | Separate ground return for LDO output; ties to SOURCE internally but routed separately on PCB for noise isolation. |
| 8 (OUT) | LDO output | Delivers regulated 3.3V; requires local 1–10μF ceramic decoupling to support transient loads up to 270mA. |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side CV regulation | Eliminates optocoupler and secondary-side TL431, reducing BOM count and improving reliability in space-constrained appliances. |
| Integrated 700V MOSFET | Enables single-chip offline conversion from 85–265VAC input without external HV switch or driver. |
| On-chip 3.3V LDO | Provides dedicated low-noise auxiliary rail for microcontrollers or sensors, avoiding discrete LDO and its associated quiescent current. |
| Green-mode frequency foldback | Reduces switching frequency and peak current at light load, enabling <30mW no-load consumption for regulatory compliance. |
| Comprehensive protection suite | Includes thermal shutdown (150°C), OLP (220ms delay), SCP (600mA), and open-loop detection (0.5V FB) - all auto-recovering except latch-off faults. |
Applications
| Smart Home Sensors | White Goods Control Boards |
|---|---|
Use Scenario: Low-power occupancy/motion sensor modules powered directly from AC mains in HVAC or lighting controls. IC Role / Device Role / Timing Role: Primary-side offline regulator generating 5V/3.3V rails for MCU, RF transceiver, and analog front-end without isolation barrier. Use Value: Eliminates transformer and optocoupler, reducing board area by >40% while maintaining <30mW standby draw required for ENERGY STAR certification. | Use Scenario: Main control board power supply in refrigerators, washing machines, and dishwashers operating from 230VAC mains. IC Role / Device Role / Timing Role: Dual-output buck converter delivering 12V for motor drivers and 3.3V for MCU via integrated LDO in compact SOIC8-7B footprint. Use Value: Enables single-chip solution for both main and auxiliary rails, cutting component count by 7 parts versus discrete flyback + LDO design. |
| IoT Gateway Standby Supply | Industrial PLC Auxiliary Rail |
Use Scenario: Always-on Ethernet/Wi-Fi gateway requiring ultra-low standby power during network sleep cycles. IC Role / Device Role / Timing Role: Green-mode offline regulator with frequency foldback and peak-current compression to sustain <30mW no-load draw. Use Value: Meets IEC 62301 Class I (<0.5W) standby requirement while supporting 4W peak for Wi-Fi burst transmission. | Use Scenario: Auxiliary 3.3V rail for FPGA configuration and communication ICs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Non-isolated buck-boost regulator powering isolated CAN/RS-485 transceivers from unregulated 12–24V DC bus derived from AC input. Use Value: Provides robust 270mA LDO peak current to handle transceiver surge loads without brownout, even under 125°C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP163AGS-33-Z | Lower 210mA peak current limit and 16Ω RDS(on); same SOIC8-7B package and 3.3V LDO. | Rated for ≤2W output; suitable for sub-1W sensor nodes where thermal margin is less critical. | Select when system output power is ≤1.5W and cost sensitivity outweighs efficiency at mid-load. |
| MP163CGS-33-Z | Higher 660mA peak current limit and 13.5Ω RDS(on); identical pinout and LDO specs. | Supports up to 6W output; requires larger heatsinking due to higher power density in same SOIC8-7B package. | Choose for 3–4W applications needing headroom for line/load transients or extended temperature operation. |
Compared with MP163AGS-33-Z, MP163BGS-33-Z delivers 100% higher peak current and 12.5% lower RDS(on) in identical footprint, enabling 4W operation without layout change; versus MP163CGS-33-Z, it trades 57% lower peak current for 15% better light-load efficiency and tighter thermal budget.
Availability
MP163BGS-33-Z is available at Aetrix Electronics and suitable for smart home sensors, white goods control boards, and IoT gateway standby power supplies requiring stable component supply across multi-year production cycles.
Supply support for MP163BGS-33-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 over 20 years of leadership in DC/DC conversion and AC/DC regulation.
The MP163 product line targets cost-sensitive, space-constrained offline power conversion in consumer and industrial applications, emphasizing integration (HV MOSFET + LDO + protection) and regulatory compliance (Level VI, CoC Tier 2).
FAQ
What topology configurations does MP163BGS-33-Z support?
The MP163BGS-33-Z supports buck, boost, buck-boost, and flyback topologies through primary-side constant voltage regulation. Its integrated 700V MOSFET and feedback architecture enable direct implementation in all four configurations without external HV components, as validated in MPS Application Note AN-107.
How does the integrated LDO interact with the main switching regulator?
The LDO accepts input from the main converter's output (e.g., buck output) via the IN pin and delivers a regulated 3.3V at OUT. Its 1.1V dropout at 150mA means the input must exceed 4.4V; thermal derating applies above 125°C junction temperature due to shared die with the HV MOSFET.
What is the purpose of the FB pin's 6µs sampling delay?
The FB pin samples the output voltage 6µs after MOSFET turn-off to avoid false triggering from switching noise and diode reverse-recovery spikes. This timing ensures accurate feedback capture during the freewheeling phase, critical for stable CV regulation without optocoupler compensation.
Can MP163BGS-33-Z operate without an external VCC capacitor?
No - an external 1–10μF ceramic capacitor is mandatory between VCC and SOURCE. The internal HV regulator charges this capacitor during startup and fault recovery; omission causes immediate UVLO lockout and prevents switching initiation per Absolute Maximum Ratings table.
How is overload protection (OLP) triggered and recovered?
OLP activates when FB voltage falls below 1.74V for 220ms, indicating sustained overcurrent. The IC enters latch-off mode, discharging VCC via 16–24μA current source until VCC drops to 2.4–2.8V, then restarts automatically - no external reset required.
What thermal considerations apply to the SOIC8-7B package?
The SOIC8-7B package has θJA = 86°C/W. At 4W output with 420mA peak current, junction temperature rise exceeds 125°C without copper pour; design requires ≥250mm² 2oz external copper connected to pin 7 (GND) and internal SOURCE plane to maintain TJ ≤125°C at +50°C ambient.
Is MP163BGS-33-Z RoHS and REACH compliant?
Yes - MP163BGS-33-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in MPS Product Compliance Report #MPS-PC-2018-0914.
MP163BGS-33-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- 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:
- 5.3 V
- Voltage - Supply (Vcc/Vdd):
- 5.4V ~ 6V
- Duty Cycle:
- -
- Frequency - Switching:
- 28kHz
- Power (Watts):
- 4 W
- Fault Protection:
- Current Limiting, Over Load, Short Circuit
- Control Features:
- EN, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC-7B
- Mounting Type:
- Surface Mount
MP163BGS-33-Z FAQ
1.How can I place an order for MP163BGS-33-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP163BGS-33-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 MP163BGS-33-Z reliable?
The price and inventory of MP163BGS-33-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP163BGS-33-Z is usually 5 days.
3.What payment methods are accepted for MP163BGS-33-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP163BGS-33-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP163BGS-33-Z?
MP163BGS-33-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP163BGS-33-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 MP163BGS-33-Z?
For technical support, including MP163BGS-33-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP163BGS-33-Z requirements.
6.How does Aetrix verify that MP163BGS-33-Z is sourced from the original manufacturer or authorized distributors?
All MP163BGS-33-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 MP163BGS-33-Z meets industry standards.
7.What is the process for return or replacement of MP163BGS-33-Z?
All MP163BGS-33-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP163BGS-33-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 MP163BGS-33-Z part is unused and in its original packaging.
Return procedure for MP163BGS-33-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP163BGS-33-Z Tags
-
LNK6407D-TL
Power Integrations
-
LNK3204D-TL
Power Integrations
-
SR10LG-G
Microchip Technology
-
TNY285DG-TL
Power Integrations
-
LNK304DN-TL
Power Integrations
-
TNY285KG-TL
Power Integrations
-
LNK3206D-TL
Power Integrations
-
LNK623DG-TL
Power Integrations
-
TNY286PG
Power Integrations
-
LNK624DG-TL
Power Integrations
-
LNK604DG-TL
Power Integrations
-
UCC28704DBVR-1
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
