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Monolithic Power Systems Inc. MP2152GTF-12-Z
- Part No.:
- MP2152GTF-12-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-563, SOT-666
- Datasheet:
-
MP2152GTF-12-Z.pdf
- Description:
- IC REG BUCK 1.2V 2A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
MP2152GTF-12-Z from Monolithic Power Systems is a fixed-output 1.2V, 2A synchronous step-down DC/DC converter in SOT563 package, featuring 25μA quiescent current, 1.1MHz switching frequency, and integrated 75mΩ/45mΩ power MOSFETs. It delivers stable regulation from 2.5V–5.5V input for low-power portable systems requiring ultra-low standby consumption and fast transient response.
For engineers reviewing the MP2152GTF-12-Z datasheet, MP2152GTF-12-Z pinout, MP2152GTF-12-Z application, or MP2152GTF-12-Z equivalent, key selection criteria include its fixed 1.2V output with ±1% FB accuracy, output discharge capability during shutdown, 100% duty-cycle support, and thermal/short-circuit protection with hiccup recovery - all critical for battery-powered I/O rail and DSP core supply designs.
Technical Context
The MP2152GTF-12-Z employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz switching across 2.5V–5.5V input and 1.2V output, enabling fast load transient response without external compensation. Its internal high-side P-MOSFET (75mΩ) and low-side N-MOSFET (45mΩ) operate in synchronous rectification mode, eliminating external diode losses.
It integrates EN-controlled power sequencing, soft-start (0.5ms), output discharge via internal FET, and dual-stage over-voltage protection: dynamic VOUT regulation at 115% VFB followed by absolute VIN OVP at 6.1V. Thermal shutdown activates at 160°C with 30°C hysteresis, and short-circuit protection uses cycle-by-cycle current limiting with hiccup-mode recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% (1182–1218mV over –40°C to +125°C), enabling precise core rail supply for low-voltage processors. |
| Max Output Current | 2A continuous, supported by 75mΩ/45mΩ internal MOSFETs and 100% duty-cycle capability for low-dropout operation. |
| Quiescent Current | 30–35μA (typical, fixed-VOUT mode), minimizing battery drain in always-on subsystems. |
| Switching Frequency | 1.1MHz nominal, enabling compact 1–2.2μH inductor and 22μF ceramic output capacitor design. |
| Input Voltage Range | 2.5V to 5.5V, compatible with single-cell Li-ion, Li-polymer, and 3.3V/5V system rails. |
| Protection Features | Cycle-by-cycle current limit (2.8A P-FET peak), thermal shutdown (160°C), hiccup-mode SCP, and VOUT OVP (115% VFB). |
| Package | SOT563 (1.6mm × 1.6mm × 0.55mm), surface-mount, RoHS-compliant, with θJA = 80°C/W on 2-layer PCB. |
Pinout & Package
SOT563 6-pin ultra-small package with exposed thermal pad (not electrically connected); footprint optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for input capacitor, inductor, and output capacitor; must be low-impedance plane connection. |
| 2 SW | Switching node | Drain of internal high-side P-MOSFET; connects directly to inductor; requires tight layout to minimize EMI and ringing. |
| 3 VIN | Input supply | 2.5V–5.5V unregulated input; requires local 4.7–10μF ceramic decoupling capacitor placed near pin. |
| 4 EN | Enable control | Logic-level input (1.2V threshold); floating or pulled low disables device and activates output discharge path. |
| 5 PG | Power good indicator | Open-drain output active when VFB is within ±10%/+15% of 1.2V; requires external 100–500kΩ pull-up to VIN or VOUT. |
| 6 OUT | Regulated output | 1.2V power rail; connects to load and output capacitor; senses output voltage for regulation and OVP monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ sleep mode | 30–35μA quiescent current enables >1-year battery life in always-on IoT sensors and wearables. |
| Integrated output discharge | Internal FET discharges output capacitor on disable, preventing back-powering and ensuring safe power sequencing. |
| Constant-on-time (COT) control | Eliminates loop compensation components and delivers <10μs load transient response for DSP and RF IC supply rails. |
| VOUT over-voltage protection | Dual-stage OVP: dynamic regulation at 115% VFB (1.38V) followed by hard VIN cutoff at 6.1V, protecting downstream 1.2V logic. |
| Thermal and short-circuit robustness | Hiccup-mode recovery limits average power during fault, while 160°C thermal shutdown prevents permanent die damage. |
Applications
| Wireless Networking Cards | Portable Medical Instruments |
|---|---|
|
Use Scenario: Powering 2.4GHz/5GHz Wi-Fi SoC baseband and RF sections in compact M.2 or mini-PCIe cards. IC Role / Device Role / Timing Role: Primary 1.2V core supply for ARM Cortex-M/A series processors and WLAN MAC/PHY ICs. Use Value: 25μA IQ extends battery runtime between wireless polling cycles; 1.1MHz switching avoids interference with 2.4GHz ISM band. |
Use Scenario: Supplying ultra-low-noise 1.2V rail to ADC front-ends and microcontroller cores in handheld ECG or pulse oximeters. IC Role / Device Role / Timing Role: Regulated power source for precision analog signal chain and low-power MCU execution. Use Value: Tight ±1% output accuracy ensures consistent ADC reference scaling; output discharge prevents measurement corruption during power cycling. |
| Battery-Powered Industrial Sensors | Low-Voltage I/O System Power |
|
Use Scenario: Providing stable 1.2V supply to LoRaWAN or NB-IoT transceivers and sensor fusion MCUs in remote environmental nodes. IC Role / Device Role / Timing Role: Main DC/DC regulator converting single Li-SOCl₂ or AA alkaline cell output to processor core voltage. Use Value: 2.5V minimum input supports operation down to near-dead battery; 100% duty cycle maintains regulation as input drops below 1.2V. |
Use Scenario: Generating 1.2V auxiliary rail for FPGA I/O banks, DDR memory termination, or USB PHY circuitry in embedded gateways. IC Role / Device Role / Timing Role: Secondary regulated supply derived from main 3.3V or 5V system rail. Use Value: Integrated PG signal enables FPGA configuration lock-step with power rail stabilization; SOT563 footprint saves board area in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | 1.2V fixed, 2A, 2.25MHz switching, 17μA IQ, WSON-6 package (2mm × 2mm) | Higher frequency allows smaller inductors but increases EMI sensitivity; no integrated output discharge. | Select when board space permits larger package and higher-frequency filtering is acceptable; avoid where output discharge is mandatory. |
| RT7295BGJ6F | 1.2V fixed, 2A, 1.5MHz, 35μA IQ, TSOT23-6 package (2.9mm × 1.6mm) | Larger footprint than SOT563; lacks PG pin and VOUT OVP; thermal shutdown at 150°C (lower margin). | Choose for cost-sensitive designs where PG signaling and enhanced OVP are non-critical; verify thermal derating at full load. |
Compared with TPS62260DRVR and RT7295BGJ6F, MP2152GTF-12-Z uniquely combines SOT563's ultra-compact size, guaranteed output discharge, PG signaling, and dual-stage OVP - making it optimal for space-constrained, safety-critical, and battery-backed applications where rail integrity and sequencing are essential.
Availability
MP2152GTF-12-Z is available at Aetrix Electronics and suitable for wireless networking cards, portable medical instruments, battery-powered industrial sensors, and low-voltage I/O system power requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MP2152GTF-12-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP2152 belongs to MPS's ultra-low-IQ synchronous buck converter product line, engineered specifically for battery-powered and energy-sensitive applications demanding minimal standby loss, fast transient response, and robust fault protection in miniature packages.
FAQ
What is the purpose of the PG pin on MP2152GTF-12-Z?
The PG (Power Good) pin is an open-drain output that signals valid regulation of the 1.2V output. When VFB remains within –10% to +15% of 1.2V (i.e., 1.08V–1.38V), PG is pulled high via an external 100–500kΩ resistor to VIN or VOUT; outside this window, the internal MOSFET pulls PG low. This enables system-level power sequencing and fault detection without additional supervision ICs.
Does MP2152GTF-12-Z require external feedback resistors?
No. MP2152GTF-12-Z is a fixed-output variant with internal resistor divider set to 1.2V; the FB pin is not connected externally. Only adjustable versions (e.g., MP2152GTF) use external R1/R2. Using external resistors on MP2152GTF-12-Z would disrupt regulation and is not supported.
How does the output discharge function operate during shutdown?
When EN is pulled low or left floating, the MP2152GTF-12-Z activates an internal discharge FET between OUT and GND, presenting ~200Ω resistance to rapidly bleed charge from the output capacitor. This prevents back-powering of upstream circuits and ensures clean, controlled power-down - critical for multi-rail systems and hot-swap applications.
Can MP2152GTF-12-Z operate with input voltage below 1.2V?
No - the minimum input voltage is 2.5V per datasheet specifications. However, it supports 100% duty cycle, allowing it to sustain 1.2V output as VIN drops toward 1.2V *within* its 2.5V–5.5V operating range. Below 2.5V, under-voltage lockout (UVLO) disables the device at ~2.3V rising threshold.
What thermal performance can be expected in SOT563 package at 2A load?
On a standard 2-layer PCB (EV2152-TF-00A demo board), θJA is 80°C/W. At 2A output with 3.6V input and 1.2V output (efficiency ~88%), power dissipation is ~0.29W, resulting in ~23°C junction-to-ambient rise above ambient. Derating begins above 85°C ambient; full 2A is guaranteed up to +85°C ambient with proper copper pour.
Is the MP2152GTF-12-Z pin-compatible with other MP2152 variants?
Yes - all MP2152 variants (adjustable and fixed-output) share identical SOT563 pinout and footprint. The only functional difference is internal FB network configuration: fixed versions omit external FB connection and enable PG; adjustable versions route FB externally and disable PG. No layout change is needed when swapping variants.
What failure modes does the hiccup-mode short-circuit protection implement?
Upon detecting over-current (≥2.8A high-side peak), MP2152GTF-12-Z disables switching, discharges the soft-start capacitor, waits ~1ms, then attempts re-start. If short persists, it repeats this cycle - limiting average power to <100mW and preventing thermal runaway. Recovery is automatic once fault clears, with no latch or manual reset required.
MP2152GTF-12-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
MP2152GTF-12-Z FAQ
1.How can I place an order for MP2152GTF-12-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2152GTF-12-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 MP2152GTF-12-Z reliable?
The price and inventory of MP2152GTF-12-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2152GTF-12-Z is usually 5 days.
3.What payment methods are accepted for MP2152GTF-12-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2152GTF-12-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2152GTF-12-Z?
MP2152GTF-12-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2152GTF-12-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 MP2152GTF-12-Z?
For technical support, including MP2152GTF-12-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2152GTF-12-Z requirements.
6.How does Aetrix verify that MP2152GTF-12-Z is sourced from the original manufacturer or authorized distributors?
All MP2152GTF-12-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 MP2152GTF-12-Z meets industry standards.
7.What is the process for return or replacement of MP2152GTF-12-Z?
All MP2152GTF-12-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2152GTF-12-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 MP2152GTF-12-Z part is unused and in its original packaging.
Return procedure for MP2152GTF-12-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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