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Monolithic Power Systems Inc. MP1496SGJ-Z
- Part No.:
- MP1496SGJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MP1496SGJ-Z.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
MP1496SGJ-Z from Monolithic Power Systems is a high-efficiency, synchronous step-down DC/DC converter with integrated 150mΩ high-side and 70mΩ low-side MOSFETs, delivering up to 2A continuous output current across a 4.5V–16V input range, fixed 500kHz switching frequency, and adjustable output voltage starting at 0.8V - deployed in notebook I/O power, flat-panel TV supplies, and distributed power rails.
For engineers reviewing the MP1496SGJ-Z datasheet, MP1496SGJ-Z pinout, MP1496SGJ-Z application, or MP1496SGJ-Z equivalent, key selection considerations include internal MOSFET RDS(on), soft-start programmability via SS pin, external clock synchronization capability (300kHz–2MHz), hiccup-mode over-current protection, and thermal shutdown at 150°C.
Technical Context
The MP1496SGJ-Z employs peak-current-mode control with a fixed 500kHz oscillator and fold-back frequency reduction (250kHz) when FB falls below 400mV - enabling stable operation during short-circuit faults. Its proprietary switching-loss-reduction technique improves efficiency across light-to-heavy loads.
It integrates a 5V internal VCC regulator powered from VIN, bootstrap circuitry for high-side gate drive, and an error amplifier with internal compensation optimized for minimal external components. EN/SYNC serves dual function: digital enable control and external clock synchronization input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 16V - supports wide industrial and consumer input rails including 5V, 12V, and 15V systems. |
| Output Current | 2A continuous - sufficient for powering core logic, DDR memory I/O, or display backlight drivers. |
| Switching Frequency | Fixed 500kHz (±18%) - balances size (small inductor/capacitor) and efficiency; synchronizable to 300kHz–2MHz external clock. |
| Feedback Reference | 0.807V ±1.5% - enables precise output regulation from 0.8V up to near-VIN; sets accuracy of resistor-divider-based output programming. |
| HS/LS RDS(on) | 150mΩ / 70mΩ - reduces conduction loss and thermal stress, supporting >90% efficiency at mid-load in typical 12V→3.3V designs. |
| Soft-Start Current | 11μA - charges external SS capacitor linearly to control inrush current and prevent output overshoot during startup. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die under sustained overload or poor PCB thermal design; auto-recovery at ~130°C. |
Pinout & Package
MP1496SGJ-Z is housed in an 8-pin TSOT23 package - ultra-compact surface-mount footprint (2.9mm × 1.6mm × 0.85mm) optimized for space-constrained portable and display applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft-Start Control | Connects to external capacitor; 11μA internal current source ramps FB reference to limit inrush and ensure monotonic startup. |
| 2 IN | Main Input Supply | Accepts 4.5V–16V rail; requires local ceramic decoupling (≥22μF) placed close to pin to suppress high-frequency switching noise. |
| 3 SW | Power Switch Node | Drives external inductor; high di/dt node requiring short/wide trace routing and careful separation from analog signals (e.g., FB). |
| 4 GND | Power Ground Reference | System return for power stage and IC bias; must connect to large copper pour with multiple vias to minimize impedance and EMI. |
| 5 BST | Bootstrap Supply | Forms floating gate drive for high-side MOSFET via external capacitor between BST and SW; 10Ω series resistor recommended to damp ringing. |
| 6 EN/SYNC | Enable & Clock Input | Digital enable (1.4V typ. rising threshold); also accepts external 300kHz–2MHz clock signal for frequency synchronization. |
| 7 VCC | Bias Regulator Output | Internal 5V supply for control circuitry; requires 0.1–0.22μF ceramic cap placed adjacent to pin and GND for stability. |
| 8 FB | Feedback Input | Senses output voltage via resistor divider; internal 0.807V reference enables accurate output regulation and fold-back during fault conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 150mΩ HS + 70mΩ LS MOSFETs eliminate external diode loss, enabling >92% efficiency at 1A in 12V→3.3V conversion. |
| Programmable soft-start | External SS capacitor sets startup time (tSS ≈ 0.08 × CSS[nF] ms), preventing input rail sag and output overshoot. |
| Hiccup-mode OCP | Cycle-by-cycle current limit triggers automatic restart after fault clearance - limits average short-circuit power dissipation to <1W. |
| External clock sync | EN/SYNC pin accepts 300kHz–2MHz external clock, enabling noise-sensitive systems to avoid AM radio bands or align with system clocks. |
| Fold-back frequency control | Oscillator drops to 250kHz when FB < 400mV - reduces peak inductor current and thermal stress during output short-circuit events. |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Powering USB-C PD port logic and level-shifters in ultrabooks. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck converter supplying SoC I/O rails and interface controllers. Use Value: High efficiency at light load (enabled by synchronous operation) extends battery runtime; compact TSOT23-8 eases layout in thin-profile PCB stacks. |
Use Scenario: Generating 3.3V bias for HDMI transmitter ICs in set-top boxes. IC Role / Device Role / Timing Role: Secondary regulated supply derived from 12V main rail, requiring low noise and fast transient response. Use Value: Current-mode control delivers <50µs load-step response; FB pin's 10nA input current minimizes divider resistor power loss and voltage error. |
| Application 3 | Application 4 |
Use Scenario: Backlight LED driver bias supply in LCD monitor mainboard. IC Role / Device Role / Timing Role: Pre-regulator feeding constant-current LED driver ICs; must survive repeated hot-plug transients. Use Value: 16V absolute max input rating and robust UVLO (3.9V rising threshold) prevent malfunction during 12V rail brownouts or connector bounce. |
Use Scenario: Point-of-load conversion for FPGA configuration I/O banks in industrial edge gateways. IC Role / Device Role / Timing Role: Isolated, low-noise 1.8V supply sourced from 12V intermediate bus. Use Value: Adjustable output (0.8V min) supports diverse core/logic voltages; thermal shutdown + hiccup mode ensures field reliability under partial airflow blockage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 3A rated, 2MHz fixed frequency, wider 3.3V–36V input range; no external sync capability. | Better suited for higher-current or higher-input-voltage industrial sensors; lacks MP1496SGJ-Z's hiccup-mode OCP and fold-back frequency. | Select when >2A output or >16V input is required; avoid if clock synchronization or short-circuit thermal management is critical. |
| TPS562201DDFR | 2A, 500kHz, integrated compensation; lower 4.5V–17V input, but only 0.6V feedback reference and no SS pin. | Optimized for cost-sensitive consumer apps; lacks programmable soft-start and external clock sync - limiting EMI control flexibility. | Prefer for simple, low-BOM-count designs where startup sequencing isn't critical and EMI filtering is handled externally. |
Compared with MP2451DT-LF-Z and TPS562201DDFR, MP1496SGJ-Z uniquely combines hiccup-mode OCP, fold-back frequency, and full 300kHz–2MHz sync range - making it optimal for compact, thermally constrained, and noise-sensitive applications like displays and portable computing.
Availability
MP1496SGJ-Z is available at Aetrix Electronics and suitable for notebook I/O power, flat-panel TV subsystems, and distributed power systems requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MP1496SGJ-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 MP1496S product line targets space-constrained, efficiency-critical DC/DC conversion in consumer and computing applications - emphasizing integration, thermal resilience, and ease of layout with minimal external components.
FAQ
What is the maximum allowable input voltage for MP1496SGJ-Z?
The absolute maximum input voltage is 17V, but the recommended operating range is 4.5V to 16V. Exceeding 16V risks triggering overvoltage stress on internal circuitry, especially the bootstrap regulator and VCC clamp. Sustained operation above 16V voids reliability guarantees and may cause premature failure.
Can MP1496SGJ-Z operate in discontinuous conduction mode (DCM)?
Yes - the device automatically enters DCM when the inductor valley current reaches the negative current limit (–1A typical), typically under light-load conditions. This behavior is enabled by LS-FET negative current sensing and improves light-load efficiency without requiring external mode-control pins.
How does the EN/SYNC pin function in enable versus synchronization modes?
When driven high (>1.4V), EN/SYNC enables regulation; when pulled low (<1.25V), it disables the converter. To synchronize, apply a clean external clock (300kHz–2MHz) with <1.7µs pulse width directly to this pin - the internal oscillator locks to its rising edge, eliminating beat frequencies in multi-rail systems.
What is the purpose of the BST pin and why is a series resistor recommended?
BST supplies the floating gate drive voltage for the high-side MOSFET via a capacitor tied between BST and SW. A 10Ω resistor between SW and the BST capacitor reduces high-frequency ringing caused by parasitic inductance, preventing false triggering of the bootstrap UVLO and improving gate-drive stability.
Does MP1496SGJ-Z require external compensation components?
No - the error amplifier features an internally optimized compensation network. Only the external feedback resistor divider, input/output capacitors, inductor, and soft-start capacitor are required. This eliminates tuning complexity and reduces BOM count while maintaining stability across standard ceramic capacitor ESR ranges.
How does the hiccup-mode over-current protection behave during a sustained short circuit?
Upon current-limit detection, the device reduces switching frequency and eventually enters hiccup mode: it shuts down for ~20ms, then attempts restart. This cycle repeats, limiting average power dissipation to <0.5W and preventing thermal runaway - verified in typical 12V→0V short-circuit tests on EV1496S evaluation boards.
Is MP1496SGJ-Z RoHS-compliant and lead-free?
Yes - MP1496SGJ-Z is fully RoHS-compliant and lead-free, with green status confirmed per MPS Quality Assurance documentation. The TSOT23-8 package uses matte-tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30°C/60% RH.
MP1496SGJ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 15.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MP1496SGJ-Z FAQ
1.How can I place an order for MP1496SGJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1496SGJ-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 MP1496SGJ-Z reliable?
The price and inventory of MP1496SGJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1496SGJ-Z is usually 5 days.
3.What payment methods are accepted for MP1496SGJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1496SGJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1496SGJ-Z?
MP1496SGJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1496SGJ-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 MP1496SGJ-Z?
For technical support, including MP1496SGJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1496SGJ-Z requirements.
6.How does Aetrix verify that MP1496SGJ-Z is sourced from the original manufacturer or authorized distributors?
All MP1496SGJ-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 MP1496SGJ-Z meets industry standards.
7.What is the process for return or replacement of MP1496SGJ-Z?
All MP1496SGJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1496SGJ-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 MP1496SGJ-Z part is unused and in its original packaging.
Return procedure for MP1496SGJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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