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Monolithic Power Systems Inc. MP28163GQ-Z
- Part No.:
- MP28163GQ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MP28163GQ-Z.pdf
- Description:
- IC REG BUCK BOOST ADJ/1.5V 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,446
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Product details
Overview
MP28163GQ-Z from Monolithic Power Systems is a high-efficiency, single-inductor buck-boost DC/DC converter with integrated 2.9A N-channel and 1.8A P-channel MOSFETs, operating from 2V to 5.5V input to deliver adjustable 1.5V–5V output. It supports seamless buck, buck-boost, and boost modes, delivers up to 1.3A at 3.3V output from 2.7V–5.5V input, and features 1.1MHz fixed-frequency PWM control for compact filter design - ideal for space-constrained battery-powered portable instruments and POS terminals.
For engineers reviewing the MP28163GQ-Z datasheet, MP28163GQ-Z pinout, MP28163GQ-Z application, or MP28163GQ-Z equivalent, key selection criteria include its dual-mode operation across VIN/VOUT crossover, pulse-skipping mode for <70μA quiescent current, internal soft-start and hiccup-mode SCP, thermal shutdown at 160°C, and QFN10 (3×3mm) package with exposed thermal pad.
Technical Context
The MP28163 employs peak current-mode control with dual error amplifiers (VC-Buck and VC-Boost) and slope compensation to enable stable regulation across buck (VIN > VOUT), buck-boost (VIN ≈ VOUT), and boost (VIN < VOUT) regions. Its MODE/SYNC pin selects between automatic pulse-skipping mode (PSM) at light load and forced fixed-frequency PWM under all loads - critical for noise-sensitive applications like GSM/GPRS RF sections.
Internal protection includes OTP (160°C trip, 20°C hysteresis), hiccup-mode short-circuit protection triggered when VOUT drops below 60% of nominal, and dual current limits: primary 2.9A (steady-state PWM) and secondary ~1.8A (startup inrush). The device uses internal loop compensation and integrates both power switches and gate drivers in a single die.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2V to 5.5V - supports full operation from single Li-ion (2.7–4.2V) or two alkaline cells (2–3.2V). |
| Output Voltage Range | 1.5V to 5V - set via external resistor divider on FB pin; enables direct 3.3V or 5V rail generation. |
| Switching Frequency | 1.1MHz (±200kHz) - enables use of small 3.3µH inductors and ceramic capacitors for minimal solution footprint. |
| Max Output Current | 1.3A at 3.3V out (VIN = 2.7–5.5V) - determined by thermal limits and 2.9A NMOS/1.8A PMOS switch ratings. |
| Quiescent Current | 70μA typical in PSM - extends battery runtime in always-on portable devices with intermittent load. |
| Feedback Reference | 496mV ±10mV - sets output accuracy; enables tight regulation even with resistor tolerance and layout parasitics. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
Pinout & Package
MP28163GQ-Z is housed in a thermally enhanced QFN10 package (3mm × 3mm, 0.5mm pitch) with an exposed thermal pad (EP) that must be soldered to PGND for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Regulated output node | Delivers final buck-boost output; connects to output capacitor and load; requires low-ESR ceramic cap placement adjacent to pin. |
| SW2 / SW1 | Switch node terminals | Connect opposite ends of single inductor; SW1 and SW2 alternate conduction to implement 4-switch buck-boost topology. |
| PGND | Power ground return | High-current return path for inductor and switches; must be low-impedance copper pour tied directly to EP. |
| VIN | Main power stage input | Supplies energy to power switches; requires local 10µF+ ceramic input capacitor placed within 3mm of pin. |
| EN | Enable control input | Active-high logic control; internal pull-down ensures safe shutdown if left unconnected; minimum 10µA drive required. |
| MODE/SYNC | Mode selection & sync input | Pull low for auto PSM/PWM switching; pull high for forced PWM; accepts external clock (1–2MHz) for EMI reduction. |
| VCC | Control-stage supply | Bypassed internally; requires external 1µF ceramic cap close to pin to stabilize bias under transient load. |
| AGND | Analog reference ground | Signal ground for FB, error amp, and comparators; must be connected externally to PGND at single point near IC. |
| FB | Feedback voltage sense | Monitors output via resistor divider; trace must avoid SW nodes and high-dI/dt paths to prevent regulation instability. |
| EP | Exposed thermal pad | Internally connected to PGND; mandatory solder connection to PCB thermal plane for θJA = 50°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-MOSFET power stage | 2.9A NMOS + 1.8A PMOS with RDS(ON) of 85mΩ/100mΩ - eliminates external FETs and reduces BOM count and layout complexity. |
| Single-inductor 4-switch topology | Enables continuous regulation across VIN/VOUT crossover without diode losses or mode transitions - improves efficiency over SEPIC or flyback. |
| Internal soft-start | Prevents output overshoot during EN assertion and SCP recovery - eliminates need for external timing components. |
| Hiccup-mode short-circuit protection | Shuts down SWA/SWC and activates SWB/SWD during fault; re-attempts soft-start after cooldown - prevents thermal runaway during sustained shorts. |
| Under-voltage lockout (UVLO) | 1.8V rising threshold with 200mV hysteresis - ensures reliable startup only when VCC is sufficient for stable gate drive and control logic. |
Applications
| Portable Medical Sensors | GSM/GPRS Modem Power |
|---|---|
|
Use Scenario: Wearable glucose monitor powered by single Li-ion cell with system rail requiring stable 3.3V across full battery discharge (4.2V → 2.7V). IC Role / Device Role / Timing Role: Primary buck-boost regulator maintaining constant 3.3V output while seamlessly transitioning between buck (4.2V→3.3V), buck-boost (3.3V→3.3V), and boost (2.7V→3.3V) modes. Use Value: Eliminates need for separate LDO or charge pump; 95% peak efficiency preserves battery life; 70μA IQ extends standby time beyond 72 hours. |
Use Scenario: Cellular modem module in handheld POS terminal where RF section demands ultra-low-noise 3.3V supply immune to variable-frequency interference. IC Role / Device Role / Timing Role: Fixed-frequency PWM regulator (MODE = HIGH) delivering clean 3.3V rail with 1.1MHz switching - avoids spectral overlap with GSM 900/1800MHz bands. Use Value: Enables direct integration without additional filtering; internal compensation ensures fast transient response to burst TX current demands. |
| Tablet PC Auxiliary Rail | Industrial Handheld Scanner |
|
Use Scenario: Secondary 5V rail for USB OTG or camera interface in tablet using dual-cell alkaline (2.4–3.2V) main battery. IC Role / Device Role / Timing Role: Boost-mode regulator generating regulated 5V from sub-5V input; leverages 2.9A switch capability to sustain 1A peak loads during camera flash. Use Value: Single-chip solution replaces discrete boost + LDO; QFN10 footprint fits tight board area; hiccup SCP prevents damage during accidental USB short. |
Use Scenario: Ruggedized barcode scanner powered by replaceable AA batteries with wide input range (2.0–3.2V) and requirement for 3.3V logic rail. IC Role / Device Role / Timing Role: Input-flexible buck-boost regulator supporting full battery voltage swing while maintaining 3.3V output with load disconnect during shutdown. Use Value: Load disconnect prevents battery drain when unit is off; UVLO prevents brownout resets; -40°C to +125°C rating ensures reliability in warehouse environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Higher 3.5A switch rating but 2.5MHz switching; no MODE pin for PSM/PWM selection; requires external compensation. | Preferred for higher-current, smaller-inductor designs; less suitable for noise-sensitive RF systems due to lack of forced-PWM mode. | Select if >1.3A output current or <1MHz EMI filtering is required; verify loop stability with external compensation network. |
| LTC3536EDD#TRPBF | Lower 1.2A switch current; 2MHz fixed frequency; integrated power good flag; no hiccup SCP (latch-off only). | Better for compact, high-frequency designs needing PG signal; unsuitable for sustained short-circuit conditions requiring automatic recovery. | Choose when power-good monitoring is essential and fault recovery can be handled externally; avoid for unattended battery-powered systems. |
Compared with TPS63020DSJR and LTC3536EDD#TRPBF, MP28163GQ-Z uniquely balances 1.3A output capability, programmable PSM/PWM operation, hiccup-mode SCP, and internal compensation - making it optimal for cost-sensitive, noise-aware, and thermally constrained portable applications.
Availability
MP28163GQ-Z is available at Aetrix Electronics and suitable for portable medical sensors, GSM/GPRS modems, tablet PC auxiliary rails, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP28163GQ-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 mixed-signal ICs for power management, motion control, and automotive applications.
The MP28163 belongs to MPS's high-efficiency buck-boost converter product line, designed specifically for battery-powered portable electronics requiring seamless voltage regulation across wide input ranges and minimal solution size.
FAQ
What is the maximum achievable output current at 5V output?
At 5V output, the MP28163GQ-Z delivers up to 800mA continuously under typical conditions (VIN = 3.3V, TA = 25°C, 2-layer PCB), limited by thermal dissipation and the 1.8A PMOS switch rating. Derating is required above 60°C ambient; full 1.3A is only specified at 3.3V output due to lower conduction loss and improved thermal margin.
Can the MODE pin be left floating?
No - the MODE/SYNC pin must be actively pulled high (>1.2V) or low (<0.4V) with a resistor. Floating causes undefined operation, unstable mode transitions, and potential EMI spikes. A 100kΩ pull-up to VCC or 100kΩ pull-down to PGND is recommended per the datasheet.
Does MP28163GQ-Z support synchronization to an external clock?
Yes - applying a 1–2MHz square-wave clock signal to the MODE/SYNC pin overrides internal oscillator and synchronizes switching frequency. This feature enables EMI reduction in multi-rail systems and eliminates beat frequencies between converters.
How does the hiccup-mode short-circuit protection behave during recovery?
Upon short detection (VOUT < 60% nominal), MP28163 enters hiccup mode: SWA/SWC turn off, SWB/SWD turn on for ~10ms, then soft-start initiates. If VOUT remains low after soft-start, another hiccup cycle repeats. Recovery succeeds only when load normalizes before VOUT drops below threshold again.
Is the FB voltage reference trimmed at production?
Yes - the 496mV feedback reference is factory-trimmed to ±2% over temperature (-40°C to +125°C), ensuring accurate output regulation without external calibration. Resistor divider tolerance and PCB layout parasitics remain the dominant sources of total output error.
What is the minimum recommended input capacitance?
A minimum 10µF X5R/X7R ceramic capacitor is required at VIN, placed within 3mm of the VIN and PGND pins. For high-peak-current applications (e.g., 1.3A load), adding a second 4.7µF capacitor in parallel improves high-frequency decoupling and reduces input ripple voltage.
Does MP28163GQ-Z provide load disconnect during shutdown?
Yes - when EN is pulled low, internal switches disconnect VOUT from VIN and SW nodes, reducing output leakage to <1µA. This prevents battery drain in standby mode and avoids unintended powering of downstream circuitry.
MP28163GQ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V (3.3V)
- Voltage - Output (Max):
- 5V
- Current - Output:
- 1.3A, 2.9A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MP28163GQ-Z FAQ
1.How can I place an order for MP28163GQ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28163GQ-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 MP28163GQ-Z reliable?
The price and inventory of MP28163GQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28163GQ-Z is usually 5 days.
3.What payment methods are accepted for MP28163GQ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28163GQ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28163GQ-Z?
MP28163GQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28163GQ-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 MP28163GQ-Z?
For technical support, including MP28163GQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28163GQ-Z requirements.
6.How does Aetrix verify that MP28163GQ-Z is sourced from the original manufacturer or authorized distributors?
All MP28163GQ-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 MP28163GQ-Z meets industry standards.
7.What is the process for return or replacement of MP28163GQ-Z?
All MP28163GQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP28163GQ-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 MP28163GQ-Z part is unused and in its original packaging.
Return procedure for MP28163GQ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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