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Monolithic Power Systems Inc. MP28162GC-P
- Part No.:
- MP28162GC-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 15-UFBGA, WLCSP
- Datasheet:
-
MP28162GC-P.pdf
- Description:
- IC REG BUCK BOOST ADJ 15WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:994
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Product details
Overview
MP28162GC-P from Monolithic Power Systems is a single-inductor, synchronous 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-P datasheet, MP28162GC-P pinout, MP28162GC-P application, or MP28162GC-P equivalent, key selection considerations include its 1.5A switching current limit, selectable light-load operation mode, internal soft-start and compensation, load disconnect during shutdown, and thermal/short-circuit protection with hiccup recovery.
Technical Context
The MP28162GC-P implements a current-mode, single-inductor buck-boost topology with dual control loops: VC_BUCK governs buck-leg switching (SWA/SWB), while level-shifted VC_BOOST controls boost-leg switching (SWC/SWD). Its operation dynamically transitions between buck, buck-boost, and boost regions based on VIN–VOUT relationship and sensed inductor current.
It integrates N- and P-channel MOSFETs with RDS(ON) of 35mΩ and 45mΩ respectively, supports external frequency synchronization via MODE/SYNC, and uses an internal 500mV feedback reference with ±2.5mV variation over –40°C to +125°C. UVLO thresholds are 1.7V (rising) and 0.69V (falling) on VIN, and 1.56V (falling) on VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.2V to 5.5V - supports single-cell Li-ion (2.7–4.2V) and multi-cell alkaline (up to 5.5V) without external LDO pre-regulation. |
| Output Voltage Range | 1.5V to 5.5V - programmable via external resistor divider; enables stable rail generation across varying battery states. |
| Switching Current Limit | 1.5A typical - sets maximum peak inductor current, defining safe continuous output capability under worst-case VIN/VOUT conditions. |
| Switching Frequency | 2MHz fixed (±15%) - enables compact 1µH inductor use and reduces output ripple without compromising efficiency at light loads. |
| Quiescent Current | 25μA at VOUT = 3.3V - extends battery runtime in always-on or low-duty-cycle sensor nodes and optical transceivers. |
| Feedback Reference | 500mV ±2.5mV - high-accuracy reference minimizes output voltage error across temperature and line/load variations. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects die integrity during sustained overload or poor PCB thermal design; auto-recovery at 140°C. |
Pinout & Package
MP28162GC-P is housed in a WLCSP-15 package (1.3mm × 2.1mm, 0.4mm pitch), optimized for ultra-compact portable electronics. The bottom-side ball layout matches JEDEC MO-220 standards with solder bumps aligned to standard PCB pad patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 EN | Enable control input | Pull high ≥1.2V to activate regulator; internal 1.5MΩ pull-down ensures default disable; supports controlled power sequencing. |
| A2/A3 VIN | Main power input | Supplies power stage; accepts 1.2–5.5V; must be decoupled near package with low-ESR ceramic capacitor. |
| B1 MODE/SYNC | Mode selection & sync input | 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 topology; requires tight layout to minimize EMI. |
| C1 VCC | Internal bias supply | Powered by higher of VIN or VOUT; decoupled with 4.7μF ceramic; enables operation down to VIN = 1.2V if VOUT > VCC_UVLO_F. |
| C2/C3 PGND | Power ground return | High-current return path for MOSFETs and inductor; must be solid copper plane with minimal trace inductance. |
| D1 AGND | Analog ground reference | Signal ground for FB, EN, MODE/SYNC; isolated from PGND at single-point connection to avoid noise coupling into feedback loop. |
| D2/D3 SW2 | Switch node 2 | Connects to other end of power inductor; complements SW1 in 4-switch buck-boost configuration; shares same layout constraints. |
| E1 FB | Output voltage feedback | Senses divided VOUT via external resistor network; high-impedance input; must be routed away from SW1/SW2 to prevent switching noise injection. |
| E2/E3 VOUT | Regulated output | Delivers regulated output; requires local 22μF ceramic output capacitor; low-ESR placement critical for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.5A MOSFETs | N- and P-channel switches with 35mΩ/45mΩ RDS(ON) eliminate external FETs and gate drivers, reducing BOM count and footprint by >30% vs discrete solutions. |
| Selectably optimized light-load efficiency | Pulse-skip mode cuts IQ to 25μA at light loads; fixed PWM mode maintains low-noise 2MHz operation when EMI sensitivity demands consistent switching. |
| Load disconnect during shutdown | Internal switch isolates VOUT from VIN when EN = low, preventing back-powering of upstream circuitry and enabling true system-level power gating. |
| Comprehensive fault protection | Short-circuit hiccup mode (8ms off-time), over-temperature shutdown (160°C), and over-voltage lockout (6.3V) ensure robust field reliability without external supervision circuits. |
| Single-inductor architecture | Eliminates need for separate buck and boost inductors; simplifies magnetics selection, reduces board area, and avoids cross-regulation issues in dual-rail systems. |
Applications
| Optical Transceiver Modules | Portable Medical Sensors |
|---|---|
Use Scenario: Compact SFP+/QSFP+ modules requiring stable 3.3V or 5V rails from depleting single-cell Li-ion batteries (2.8–4.2V). IC Role / Device Role / Timing Role: Single-inductor buck-boost regulator maintaining constant output despite wide VIN swing; replaces inefficient linear regulators or dual-stage converters. Use Value: Enables >90% efficiency across full battery discharge curve while fitting within 10mm² PCB area budget-critical for pluggable optics form factors. | Use Scenario: Handheld blood glucose meters and pulse oximeters powered by coin-cell or AAA alkaline batteries (0.9–1.5V/cell). IC Role / Device Role / Timing Role: Wide-input buck-boost generating precise 1.8V or 3.3V for MCU, ADC, and OLED display from 1.2–5.5V source. Use Value: 25μA quiescent current extends shelf life beyond 2 years; load disconnect prevents battery drain during device sleep or storage. |
| Industrial IoT Edge Nodes | Wearable Health Monitors |
Use Scenario: Battery-powered LoRaWAN or NB-IoT sensor nodes deployed in remote locations with infrequent maintenance cycles. IC Role / Device Role / Timing Role: Primary power management IC supplying 3.3V to RF SoC, sensors, and flash memory; operates across cold (-40°C) to hot (+85°C) ambient ranges. Use Value: 160°C thermal shutdown with 20°C hysteresis prevents latch-up in sealed enclosures; 1.2V start-up allows operation even after deep battery discharge. | Use Scenario: ECG/PPG patches and smart rings requiring ultra-thin profile and multi-day runtime from micro-sized Li-poly cells. IC Role / Device Role / Timing Role: Compact voltage regulator delivering regulated 1.2V core and 3.3V I/O rails from 3.0–4.2V battery; supports dynamic voltage scaling. Use Value: WLCSP-15 package (1.3×2.1mm) fits beneath flex PCB layers; internal soft-start prevents inrush current that could disrupt sensitive analog front-ends. |
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 | 2A switch current, 1.8V min VIN, 2.5MHz fSW, but larger DSBGA-12 (1.6×1.6mm); no integrated VCC bootstrap diode. | Higher current capability suits 500mA+ loads; less suitable for sub-2mm² layouts where MP28162GC-P's 1.3×2.1mm saves >25% area. | Choose TPS63802DLAR when output current exceeds 1.2A or when 2.5MHz switching improves EMI filtering requirements. |
| Analog Devices LT8337EDDB#TRMPBF | 40V max VIN, 1.5A switch, 3MHz fSW, but requires external MOSFETs and compensation; 10-pin 3×3mm DFN. | Designed for industrial/high-VIN apps (e.g., 12V input); lacks integrated switches and soft-start, increasing design complexity and component count. | Choose LT8337EDDB#TRMPBF only for inputs >6V or when programmable spread-spectrum EMI reduction is required. |
Compared with TPS63802DLAR and LT8337EDDB#TRMPBF, MP28162GC-P delivers optimal area efficiency and lowest quiescent current in <2mm² footprints for 1.5A-class battery-powered devices-making it preferred for optical modules and wearables where size and standby power dominate trade-offs.
Availability
MP28162GC-P is available at Aetrix Electronics and suitable for optical transceivers, portable medical sensors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant sourcing.
Supply support for MP28162GC-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 power management ICs, with over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP28162 belongs to MPS's ultra-compact buck-boost converter product line, engineered specifically for space- and power-constrained battery-operated applications-including optical modules, wearables, and portable instrumentation-where integration, efficiency, and thermal resilience are critical.
FAQ
What is the minimum input voltage required to start up the MP28162GC-P?
The MP28162GC-P requires a minimum 1.8V input voltage to initiate startup when VCC is unpowered. However, if VCC is pre-biased (e.g., from VOUT), it can begin regulation with VIN as low as 1.2V-though load capability is reduced due to increased P-MOSFET RDS(ON) at low VIN.
How does the MODE/SYNC pin affect efficiency and EMI performance?
When MODE/SYNC is pulled low, the device enters pulse-skip mode under light loads, reducing switching frequency and quiescent current to 25μA-maximizing battery life but increasing output voltage ripple. When pulled high, fixed 2MHz PWM operation ensures consistent EMI spectrum and lower ripple, at the cost of higher light-load power loss.
Can the MP28162GC-P drive a 1.2V output from a 3.3V input?
Yes-the MP28162GC-P supports output voltages as low as 1.5V. For 1.2V outputs, an external resistive divider cannot achieve the target because the internal 500mV feedback reference sets the lower bound of the regulated ratio. To generate 1.2V, a post-regulator (e.g., LDO) or alternative converter with lower VREF is required.
What is the recommended inductor for a 3.3V-out, 1A application?
MPS recommends the MPL-AT2010-1R0 (1μH) inductor for 3.3V output at up to 1A. This part is optimized for the MP28162GC-P's 2MHz switching frequency, provides ≤15% DC resistance increase at rated current, and maintains saturation current >2.5A-ensuring stable operation across temperature and load transients.
Does the MP28162GC-P support output capacitor discharge during shutdown?
No-the MP28162GC-P does not actively discharge the output capacitor. It provides load disconnect (open-circuit VOUT from VIN) during shutdown, but residual charge on COUT dissipates only through external load or bleed resistors. For fast discharge, add a MOSFET-based active discharge circuit controlled by EN.
How is thermal performance affected by PCB layout in the WLCSP-15 package?
Thermal resistance θJA for the WLCSP-15 is 56°C/W on a 2-layer 1oz PCB (51mm×51mm). Performance degrades significantly without proper thermal vias: ≥6 thermal vias (0.3mm diameter, 0.5mm pitch) under the exposed die pad are mandatory to achieve rated 1.5A continuous output at TA = 85°C.
Is the MP28162GC-P qualified for automotive applications?
No-the MP28162GC-P is specified for industrial temperature range (–40°C to +125°C) but is not AEC-Q200 qualified. It lacks automotive-specific stress testing, failure-in-time (FIT) reporting, and PPAP documentation. For automotive use, consider MPS's automotive-grade alternatives such as the MPQ28162 series.
MP28162GC-P 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:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLCSP (1.3x2.1)
MP28162GC-P FAQ
1.How can I place an order for MP28162GC-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28162GC-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 MP28162GC-P reliable?
The price and inventory of MP28162GC-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28162GC-P is usually 5 days.
3.What payment methods are accepted for MP28162GC-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28162GC-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28162GC-P?
MP28162GC-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28162GC-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 MP28162GC-P?
For technical support, including MP28162GC-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28162GC-P requirements.
6.How does Aetrix verify that MP28162GC-P is sourced from the original manufacturer or authorized distributors?
All MP28162GC-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 MP28162GC-P meets industry standards.
7.What is the process for return or replacement of MP28162GC-P?
All MP28162GC-P units undergo pre-shipment inspection (PSI). If there is an issue with MP28162GC-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 MP28162GC-P part is unused and in its original packaging.
Return procedure for MP28162GC-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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