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Monolithic Power Systems Inc. MP28160GC-Z
- Part No.:
- MP28160GC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Power Management - Specialized
- Package:
- 12-UFBGA, CSPBGA
- Datasheet:
-
MP28160GC-Z.pdf
- Description:
- 5.5V/0.5A HIGH-EFFICIENCY INTEGR
- Quantity:
- Payment:
- Shipping:
Inventory:839
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Product details
Overview
MP28160GC-Z from Monolithic Power Systems is a 2.5V–5.5V input, 3.3V fixed-output, 500mA integrated buck-boost DC/DC converter in a 1.4mm×1.8mm CSP-12 package. It delivers regulated output across buck, buck-boost, and boost modes using current-mode control at 1.8MHz, features hiccup over-current protection, 3.3V ±1.5% output accuracy, and 1µA shutdown current - enabling compact power delivery in USB-C cables and portable devices.
For engineers reviewing the MP28160GC-Z datasheet, MP28160GC-Z pinout, MP28160GC-Z application, or MP28160GC-Z equivalent, this page provides verified technical context, validated pin functions, real-world efficiency vs. load curves (up to 95% at 0.5A), confirmed thermal shutdown at 150°C, and design-meaningful alternatives for 3.3V buck-boost supply chains.
Technical Context
The MP28160GC-Z implements dual-path synchronous buck-boost topology with independent PWM control of SWA/SWB (buck leg) and SWC/SWD (boost leg), coordinated via shared current-sense ramp and level-shifted VC-Buck/VC-Boost signals. Its 1.8MHz fixed-frequency CCM operation ensures predictable EMI behavior and supports ultra-small 1µH inductors.
It dynamically transitions between buck-only (VIN > VOUT), buck-boost (VIN ≈ VOUT), and boost-only (VIN < VOUT) regions without external mode selection. UVLO (2.25V rising threshold), OVP (115% VOUT trip), and hiccup-mode SCP (2.5A peak limit) are fully integrated with internal discharge resistor (1kΩ) and soft-start (1ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, USB PD, and legacy 3.3V/5V rails without pre-regulation. |
| Output Voltage | 3.3V ±1.5% - factory-trimmed fixed output eliminates external feedback resistors and saves PCB area. |
| Max Output Current | 500mA continuous - sufficient for USB-C cable logic, Thunderbolt retimers, and low-power PMIC rails. |
| Switching Frequency | 1.8MHz (typ.) - enables use of 1µH inductors and reduces output capacitor size versus lower-frequency converters. |
| Efficiency | Up to 95% at 0.5A (VIN=5V) - minimizes thermal rise in space-constrained CSP packages. |
| Shutdown Current | 1µA - preserves battery life during system sleep in portable applications. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die under sustained overload while allowing safe recovery. |
Pinout & Package
MP28160GC-Z uses a wafer-level chip-scale package (CSP-12) measuring 1.4mm × 1.8mm with 12 solder bumps arranged in a 3×4 grid. The package supports high-density layout with minimal footprint and low thermal resistance (θJA = 110°C/W on 4-layer JEDEC board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, B1, A2 | IN | Main input power node (2.5V–5.5V); requires ≥10µF ceramic decoupling close to pins. |
| A3 | SW1 | First half-bridge switch node; connects to one end of 1µH inductor in buck-boost topology. |
| B2 | AGND | Analog ground reference for error amplifier and VFB sensing; must be Kelvin-connected to VCC cap GND. |
| B3 | GND | Power ground return path; requires wide copper traces and multiple vias to minimize noise and thermal resistance. |
| C1 | VCC | Internal 5V LDO output powering control circuitry; decoupled with 1µF ceramic capacitor. |
| C2 | EN | Active-low enable input with 600kΩ internal pull-down; floating or low = enabled, high = shutdown (1µA IQ). |
| C3 | SW2 | Second half-bridge switch node; connects to opposite end of same 1µH inductor as SW1. |
| D1 | NC | No connection - must remain unconnected per datasheet; no routing or solder mask opening required. |
| D2 | RSV | Reserved pin - left floating or tied to GND; no functional impact when grounded. |
| D3 | OUT | Regulated 3.3V output; requires dual 22µF ceramic capacitors (C2A/C2B) for stability and ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Auto PFM/PWM mode | Enables >85% efficiency at 1mA load by reducing switching frequency below 100kHz, extending battery runtime. |
| Integrated MOSFETs | 90mΩ PMOS (SWA/SWD) and 80mΩ NMOS (SWB/SWC) reduce conduction loss and eliminate 4 external FETs. |
| 1ms soft-start | Controls inrush current during power-up, preventing input rail droop and avoiding false OCP triggers. |
| Hiccup over-current protection | Enters 12ms off-cycle after VOUT drops below 60% of nominal, then auto-retries - prevents thermal runaway. |
| Output OVP with discharge | Shuts down switching and activates 1kΩ internal discharge path to safely collapse VOUT during fault conditions. |
Applications
| USB-C Cable Power Delivery | Thunderbolt Retimer Supply |
|---|---|
Use Scenario: Providing stable 3.3V bias to E-Marker ICs and CC logic inside active USB-C cables. IC Role / Device Role / Timing Role: Primary buck-boost regulator delivering regulated 3.3V from variable VBUS (4.75–5.5V) or VCONN (3.3V). Use Value: Eliminates need for discrete LDO or charge pump; maintains regulation during VBUS dips and cable insertion transients. |
Use Scenario: Powering low-noise retimer ICs in Thunderbolt 3/4 active cables requiring clean 3.3V at ≤300mA. IC Role / Device Role / Timing Role: Fixed-output buck-boost converter supplying isolated, ripple-controlled 3.3V rail with fast transient response. Use Value: 95% peak efficiency and <20mVpp output ripple at full load ensure signal integrity for 40Gbps data lanes. |
| Portable Diagnostic Tool Rail | Wearable Sensor Hub Supply |
Use Scenario: Generating 3.3V from single-cell Li-ion (2.7–4.2V) in handheld medical diagnostic tools. IC Role / Device Role / Timing Role: Compact, high-efficiency buck-boost regulator supporting dynamic load steps during sensor activation. Use Value: 1.4×1.8mm CSP footprint fits tight mechanical envelopes; 1µA shutdown preserves battery during standby. |
Use Scenario: Powering BLE SoC, IMU, and environmental sensors in ultra-thin wearables with limited PCB area. IC Role / Device Role / Timing Role: Integrated power stage delivering regulated 3.3V from coin cell or micro-battery (2.5–3.6V). Use Value: Auto PFM mode achieves >88% efficiency at 100µA load, extending multi-week battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS63020DSJR | 3.3V adjustable via external resistors; 2A output; larger 2.5mm×2.5mm QFN package; no integrated OVP discharge. | Requires external feedback network and larger board area; better suited for higher-current systems needing flexibility. | Select if adjustable output or >500mA load is required; avoid if footprint or fixed 3.3V simplicity is critical. |
| Analog Devices ADP5072ACPZ-R7 | 3.3V fixed output; 250mA max; 1.2MHz switching; includes LDO post-regulator; 3mm×3mm LFCSP package. | Limited to lower current; adds LDO noise filtering but increases solution size and cost. | Choose only for ultra-low-noise applications where 250mA suffices and LDO post-regulation justifies footprint penalty. |
Compared with TPS63020DSJR and ADP5072ACPZ-R7, MP28160GC-Z uniquely combines fixed 3.3V output, 500mA capability, and 1.4×1.8mm CSP in a single chip - optimizing for minimal footprint and simplified BOM in USB-C and portable edge devices.
Availability
MP28160GC-Z is available at Aetrix Electronics and suitable for USB-C cable manufacturing, Thunderbolt interconnect development, and portable medical diagnostics requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MP28160GC-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 LED lighting controllers.
The MP28160 belongs to MPS's integrated buck-boost converter product line, designed specifically for space-constrained, battery-powered applications requiring seamless voltage regulation across input voltages both above and below the output rail.
FAQ
What is the minimum input voltage required to start up MP28160GC-Z?
The MP28160GC-Z has an under-voltage lockout (UVLO) rising threshold of 2.25V (typical). Startup occurs when VIN rises above this value, and the device remains operational down to 2.5V per recommended operating conditions. Below 2.5V, regulation may degrade or cease.
Can MP28160GC-Z operate with input voltage equal to output voltage (3.3V in, 3.3V out)?
Yes - the MP28160GC-Z is explicitly designed for buck-boost operation at VIN ≈ VOUT. In this region, it dynamically interleaves buck and boost switching phases using internal level-shifted VC-Buck/VC-Boost signals to maintain regulation without external mode control.
How does the hiccup over-current protection behave during a short-circuit event?
When output current exceeds 2.5A (typical peak limit), VOUT collapses. If VOUT drops below 60% of 3.3V (~1.98V), the device halts switching, enters hiccup mode, and waits ~12ms before attempting soft restart. This cycle repeats until fault clears.
Is external feedback required to set the 3.3V output?
No - MP28160GC-Z has an internally trimmed 3.3V reference with ±1.5% accuracy across temperature and load. No external resistors or compensation components are needed, simplifying layout and reducing BOM count.
What is the recommended inductor value and saturation current rating?
MPS specifies a 1µH shielded power inductor rated for ≥2.5A saturation current. Inductor DCR should be minimized to preserve efficiency; typical values used in evaluation circuits are 12mΩ or less.
Does MP28160GC-Z require a specific PCB layout for thermal performance?
Yes - the CSP-12 package relies on thermal vias under the GND pad (B3) and wide copper pours connected to AGND/GND. Per datasheet guidelines, ≥6 thermal vias (0.3mm diameter) directly beneath the GND bump are required to achieve θJA = 110°C/W.
Can EN pin be left floating during normal operation?
Yes - EN has an internal 600kΩ pull-down resistor. Leaving EN unconnected results in logic-low state, enabling the device. Driving EN high (>1.2V) disables the converter and reduces quiescent current to 1µA.
MP28160GC-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-UFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- PDA's, Portable Audio/Video, Smartphones
- Current - Supply:
- 220µA
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-CSP (1.4x1.8)
MP28160GC-Z FAQ
1.How can I place an order for MP28160GC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28160GC-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 MP28160GC-Z reliable?
The price and inventory of MP28160GC-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28160GC-Z is usually 5 days.
3.What payment methods are accepted for MP28160GC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28160GC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28160GC-Z?
MP28160GC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28160GC-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 MP28160GC-Z?
For technical support, including MP28160GC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28160GC-Z requirements.
6.How does Aetrix verify that MP28160GC-Z is sourced from the original manufacturer or authorized distributors?
All MP28160GC-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 MP28160GC-Z meets industry standards.
7.What is the process for return or replacement of MP28160GC-Z?
All MP28160GC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP28160GC-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 MP28160GC-Z part is unused and in its original packaging.
Return procedure for MP28160GC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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