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Monolithic Power Systems Inc. MP28162GC-Z
- Part No.:
- MP28162GC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 15-UFBGA, WLCSP
- Datasheet:
-
MP28162GC-Z.pdf
- Description:
- IC REG BUCK BOOST ADJ 15WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,170
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Product details
Overview
MP28162GC-Z from Monolithic Power Systems is a synchronous single-inductor buck-boost DC/DC converter with integrated 1.5A MOSFETs, operating from 1.2V to 5.5V input and delivering 1.5V to 5.5V output. It features 2MHz fixed-frequency PWM or pulse-skip mode, 25μA quiescent current, and WLCSP-15 (1.3mm × 2.1mm) packaging-designed for space-constrained battery-powered optical modules and portable instrumentation.
For engineers reviewing the MP28162GC-Z datasheet, MP28162GC-Z pinout, MP28162GC-Z application, or MP28162GC-Z equivalent, key selection criteria include its 1.5A switching current limit, selectable light-load operation mode, integrated soft-start and compensation, load disconnect during shutdown, and thermal/short-circuit protection with hiccup recovery.
Technical Context
The MP28162GC-Z implements a current-mode controlled, single-inductor buck-boost topology with dual-phase gate drivers for SWA/SWB (buck legs) and SWC/SWD (boost legs), enabling seamless transition across buck (VIN > VOUT), buck-boost (VIN ≈ VOUT), and boost (VIN < VOUT) regions. Its functional block includes independent buck and boost comparators, level-shifted VC_BOOST generation, and slope-compensated current sensing.
Operation is governed by a 2MHz oscillator with external synchronization capability via MODE/SYNC, while internal soft-start clamps VREF ramping and limits inrush via 2ms timing. Protection logic integrates hiccup-mode short-circuit response (triggered at VOUT < 60% nominal), over-temperature shutdown at 160°C with 20°C hysteresis, and dual UVLO thresholds (1.7V rising, 0.69V falling on VIN).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 1.2V–5.5V: Supports single-cell Li-ion (2.7–4.2V) and multi-cell alkaline (up to 5.5V); enables operation down to 1.2V when VCC is externally biased. |
| VOUT Range | 1.5V–5.5V: Programmable via external resistor divider; reference voltage tightly regulated at 500mV ±5mV from –40°C to +125°C. |
| Switching Current Limit | 1.5A typical: Limits peak inductor current to prevent MOSFET overstress; derates with temperature (1.6A at 25°C, ~1.3A at 125°C). |
| fSW | 2MHz ±15%: Fixed frequency reduces EMI filtering burden; supports external sync from 1MHz to 3MHz for noise-sensitive systems. |
| IQ | 25μA typical at VOUT=3.3V: Minimizes standby power loss in always-on battery applications such as optical transceivers. |
| RDS(ON) | N-MOSFET: 35mΩ; P-MOSFET: 45mΩ: Low conduction loss enables >90% efficiency at 0.5A across 2.4–4.2V input range. |
| Package | WLCSP-15 (1.3mm × 2.1mm): Ultra-compact chip-scale package with 0.4mm pitch; requires microvia PCB design and reflow-compatible assembly. |
Pinout & Package
MP28162GC-Z uses a 15-ball WLCSP (Wafer-Level Chip-Scale Package) measuring 1.3mm × 2.1mm with 0.4mm ball pitch. The package exposes no exposed pad; thermal dissipation relies on solder joint conduction to PCB copper. Ball layout follows standard A1–E3 grid with AGND and PGND distributed across corners for low-impedance return paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 EN | Enable control input | Pull high ≥1.2V to activate; internal 1.5MΩ pull-down ensures default disable; compatible with 1.8V/3.3V logic. |
| A2/A3 VIN | Main power input | Supplies power stage; accepts 1.2–5.5V; must be decoupled near package with ≥22μF ceramic capacitor. |
| B1 MODE/SYNC | Mode selection & clock sync | Low = auto pulse-skip/PWM; high = forced fixed-frequency PWM; also accepts external 1–3MHz sync clock. |
| B2/B3 SW1 | Switch node 1 | Connects to one end of power inductor; carries bidirectional current in buck-boost operation; high dv/dt node. |
| C1 VCC | Internal bias supply | Powered internally by higher of VIN or VOUT; requires 4.7μF ceramic decoupling close to pin; not user-supplied. |
| C2/C3 PGND | Power ground | High-current return path for MOSFETs and inductor; must be solid copper plane with minimal trace inductance. |
| D1 AGND | Analog ground | Reference for FB, EN, MODE/SYNC; isolated from PGND except at single-point star connection near IC. |
| D2/D3 SW2 | Switch node 2 | Connects to other end of same inductor as SW1; forms single-inductor buck-boost topology with SW1. |
| E1 FB | Feedback input | Senses divided VOUT via resistor divider; sensitive to noise-must be routed away from SW1/SW2 and shielded. |
| E2/E3 VOUT | Regulated output | Delivers 1.5–5.5V; requires ≥66μF total ceramic output capacitance (e.g., 3×22μF) placed adjacent to VOUT/PGND pins. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor buck-boost topology | Eliminates need for separate buck and boost converters; reduces BOM count and board area by >40% vs. dual-converter solutions. |
| Selectably optimized light-load efficiency | Pulse-skip mode cuts IQ to 25μA; fixed PWM mode maintains low-noise 2MHz ripple for RF/analog subsystems. |
| Integrated protection suite | Hiccup-mode SCP triggers after VOUT drops to 60% nominal; OTP shuts down at 160°C with 20°C hysteresis; OVP clamps at 6.3V. |
| Load disconnect during shutdown | Internal switch isolates VOUT from VIN when EN = low, preventing backfeed and enabling true system-level power gating. |
| Internal soft-start and compensation | 2ms built-in SS prevents inrush; eliminates need for external SS capacitor or loop compensation components. |
Applications
| Optical Transceiver Modules | Handheld Test Equipment |
|---|---|
Use Scenario: Compact SFP+/QSFP modules requiring stable 3.3V rail from varying battery or host supply (2.4–4.2V). IC Role / Device Role / Timing Role: Primary buck-boost regulator supplying laser driver and TIA analog circuitry; maintains regulation during rapid VIN sag under burst transmission. Use Value: 2MHz fSW minimizes conducted EMI into sensitive analog front-end; 25μA IQ extends battery life between calibration cycles. | Use Scenario: Portable multimeter or oscilloscope with rechargeable Li-ion battery and mixed-signal ADC/DAC subsystems. IC Role / Device Role / Timing Role: System power rail generator delivering 1.8V/3.3V from 2.7–4.2V battery; dynamically adjusts mode based on measurement duty cycle. Use Value: Pulse-skip mode extends runtime during idle periods; fixed PWM mode ensures clean supply during high-speed sampling without ripple-induced quantization error. |
| Wearable Health Sensors | IoT Edge Node Controllers |
Use Scenario: Ultra-thin fitness tracker with optical heart-rate sensor powered by coin-cell or thin-film battery (1.2–3.0V). IC Role / Device Role / Timing Role: Single-rail power manager converting variable battery voltage to constant 2.8V for MCU and photodiode amplifier. Use Value: 1.2V start-up capability enables full functionality even at end-of-life battery voltage; WLCSP-15 footprint fits sub-10mm² PCB area budget. | Use Scenario: Battery-backed industrial sensor node transmitting LoRaWAN packets intermittently from 2xAA alkaline cells (1.8–3.2V). IC Role / Device Role / Timing Role: Main system regulator powering ARM Cortex-M MCU, RF transceiver, and EEPROM; enters deep-sleep mode between transmissions. Use Value: Load disconnect prevents battery drain during MCU sleep; hiccup-mode SCP protects against accidental short during field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS63802DLAR | 2.5MHz fSW, 2A switch current, 1.8V min VIN, QFN-12 package (2mm × 2mm) | Higher current capacity suits 1A+ loads; larger package eases thermal management but increases board area. | Choose for higher output current or less aggressive size constraints; verify compatibility with existing inductor footprint. |
| Analog Devices LT8330EDDB#TRMPBF | 2MHz fSW, 1.2A switch current, 2.8V min VIN, 10-DFN (3mm × 2mm) | Higher minimum VIN excludes single-cell Li-ion start-up; DFN package offers better thermal performance than WLCSP. | Prefer where input never drops below 2.8V and thermal margin is critical; avoid for ultra-low-VIN battery applications. |
Compared with TPS63802DLAR and LT8330EDDB#TRMPBF, MP28162GC-Z delivers the smallest footprint (1.3mm × 2.1mm) and lowest 1.2V start-up voltage, making it optimal for miniaturized, single-cell battery systems-though its 1.5A limit and WLCSP assembly complexity require careful layout and process validation.
Availability
MP28162GC-Z is available at Aetrix Electronics and suitable for optical transceivers, handheld test equipment, wearable health sensors, and IoT edge node controllers requiring stable component supply with guaranteed long-term availability.
Supply support for MP28162GC-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 power management ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP28162 belongs to MPS's high-efficiency, ultra-small-footprint buck-boost converter product line, engineered specifically for battery-powered portable and optical systems demanding minimal solution size and extended runtime.
FAQ
What is the minimum input voltage required to start up the MP28162GC-Z?
The MP28162GC-Z starts up when VIN exceeds 1.7V (typical UVLO rising threshold). However, if VCC is pre-biased above 1.56V (e.g., from VOUT), it can operate down to 1.2V VIN-though load capability degrades due to increased RDS(ON) of the internal P-MOSFET.
How does the MODE/SYNC pin affect efficiency and noise performance?
When MODE/SYNC is low, the device enters pulse-skip mode under light load, reducing switching frequency and quiescent current to 25μA-ideal for battery life. When high, it forces fixed 2MHz PWM operation, minimizing output voltage ripple (<10mVpp) at the cost of higher light-load power loss.
Can the MP28162GC-Z drive a 1A load continuously?
Yes, at ambient temperatures ≤60°C and with adequate PCB copper area (≥2.23W θJA = 56°C/W), the MP28162GC-Z sustains 1A output with VOUT = 3.3V and VIN = 3.3V. At higher temperatures or lower input voltages, derating applies per the maximum output current vs. VIN curve (Figure 15, datasheet p.7).
Is an external compensation network required for stability?
No. The MP28162GC-Z integrates full Type-II compensation, eliminating external capacitors or resistors. Stability is ensured across the full VOUT range (1.5–5.5V) and load conditions (0–1.5A) when using recommended output capacitance (≥66μF ceramic) and inductor (e.g., MPL-AT2010-1R0).
What happens during a short-circuit event on the VOUT rail?
When VOUT drops below 60% of its regulated value, the MP28162GC-Z disables switching and enters hiccup mode: it pauses for ~8ms, then attempts restart. This cycle repeats until fault clears. Internal soft-start clamping prevents output overshoot during recovery.
Does the MP28162GC-Z support external synchronization of its switching frequency?
Yes. Applying a 1MHz–3MHz square-wave clock signal to the MODE/SYNC pin synchronizes the internal 2MHz oscillator. This allows alignment with system clocks or other converters to avoid beat frequencies and simplify EMI filtering in multi-rail designs.
How is thermal performance affected by the WLCSP-15 package?
The WLCSP-15 has θJA = 56°C/W on a 2-layer JEDEC board. In practice, thermal performance depends heavily on PCB layout: use ≥4 thermal vias under the package connected to inner-layer ground planes, and maximize copper area around PGND/AGND balls to achieve ≤40°C/W in optimized designs.
MP28162GC-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 15-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.2V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- -
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLCSP (1.3x2.1)
MP28162GC-Z FAQ
1.How can I place an order for MP28162GC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28162GC-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 MP28162GC-Z reliable?
The price and inventory of MP28162GC-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28162GC-Z is usually 5 days.
3.What payment methods are accepted for MP28162GC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28162GC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28162GC-Z?
MP28162GC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28162GC-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 MP28162GC-Z?
For technical support, including MP28162GC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28162GC-Z requirements.
6.How does Aetrix verify that MP28162GC-Z is sourced from the original manufacturer or authorized distributors?
All MP28162GC-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 MP28162GC-Z meets industry standards.
7.What is the process for return or replacement of MP28162GC-Z?
All MP28162GC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP28162GC-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 MP28162GC-Z part is unused and in its original packaging.
Return procedure for MP28162GC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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