My Inquiry
My Account
Monolithic Power Systems Inc. MP1469GJ-Z
- Part No.:
- MP1469GJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP1469GJ-Z.pdf
- Description:
- IC REG BUCK ADJ 1.5A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP1469GJ-Z from Monolithic Power Systems is a synchronous step-down DC-DC converter IC with integrated 255mΩ/160mΩ MOSFETs, delivering 1.5A continuous output current across a 4.7V–16V input range, fixed 500kHz switching frequency, and adjustable 0.8V–(VIN−3V) output voltage - deployed in compact TSOT23-6 packages for space-constrained power rails in digital consumer electronics.
For engineers reviewing the MP1469GJ-Z datasheet, MP1469GJ-Z pinout, MP1469GJ-Z application, or MP1469GJ-Z equivalent, this page delivers verified technical context, validated pin functions, confirmed AAM light-load efficiency behavior, thermal shutdown thresholds, and real-world design constraints including bootstrap capacitor requirements and EN pin Zener clamping at 6.5V.
Technical Context
The MP1469GJ-Z operates in fixed-frequency peak-current-mode control with internal 0.8V reference and proprietary switching-loss-reduction technique. Its current-mode architecture enables fast transient response and simplified loop compensation using only external R-C networks on FB and COMP pins.
It integrates high-side and low-side MOSFETs with RDS(ON) of 255mΩ and 160mΩ respectively, supports AAM (Advanced Asynchronous Modulation) for PFM operation below ~340mA load, and features cycle-by-cycle over-current protection with hiccup recovery during output short-circuit events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.7V to 16V - supports wide industrial and consumer supply rails including 5V, 12V, and 15V systems without external pre-regulation. |
| Output Current | 1.5A continuous - sufficient for powering core logic, FPGAs, SoCs, and display drivers in embedded applications. |
| Switching Frequency | Fixed 500kHz (±18%) - enables use of small 6.5µH inductors and reduces EMI filtering complexity vs. lower-frequency converters. |
| Feedback Reference | 0.8V ±3% - sets output voltage via external resistor divider; allows precise regulation down to 0.8V for modern low-voltage ICs. |
| Thermal Shutdown | 150°C activation / 130°C hysteresis - protects die under sustained overload or poor PCB thermal design; self-recovery avoids manual reset. |
| AAM Light-Load Mode | Activates when VCOMP < 0.5V - skips pulses to maintain >85% efficiency at loads <100mA, critical for battery-backed standby circuits. |
| EN Pin Threshold | Rising: 1.5V typ., Falling: 1.32V typ. - provides clean enable/disable margin against noise; internal 1MΩ pull-down ensures default-off state. |
Pinout & Package
MP1469GJ-Z is housed in a thermally enhanced 6-pin TSOT23 package (2.9mm × 1.6mm × 0.85mm), optimized for high-power-density PCB layouts with exposed pad for improved thermal dissipation (θJA = 220°C/W, θJC = 110°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input Supply Rail | Accepts 4.7–16V; requires local 22µF ceramic decoupling; must connect via wide trace to minimize voltage drop and EMI. |
| 2 GND | Power Ground Reference | System ground return for all internal circuits and output regulation; requires low-inductance connection to PCB ground plane. |
| 3 SW | Switch Node | Drives external inductor; carries high di/dt; must be routed short/wide and isolated from sensitive analog traces (e.g., FB). |
| 4 BST | Bootstrap Supply | Connects to SW via 1µF capacitor to generate floating gate drive for high-side MOSFET; optional external diode improves efficiency at >65% duty cycle. |
| 5 EN | Enable Control | Digital ON/OFF control; internally clamped to 6.5V Zener; 1MΩ pull-down ensures safe shutdown if left floating. |
| 6 FB | Feedback Input | Senses output voltage via resistor divider; internal error amplifier compares to 0.8V reference; bandwidth set by external compensation network. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power MOSFETs | 255mΩ HS + 160mΩ LS - eliminates external switch losses and simplifies layout while maintaining >92% peak efficiency at 12V→3.3V/1.5A. |
| AAM Power-Save Mode | 0.5V internal threshold triggers PFM skipping - sustains >87% efficiency at 10mA load, extending battery life in always-on subsystems. |
| Internal Soft-Start | 1ms ramp time - prevents inrush current and output overshoot during startup, eliminating need for external soft-start circuitry. |
| Over-Current Protection | 3.0A cycle-by-cycle limit + hiccup mode - limits fault current to <100mA average during output short, reducing thermal stress and enabling auto-recovery. |
| Under-Voltage Lockout | 4.2V rising / 3.86V falling threshold - prevents erratic operation during brown-out conditions and ensures clean start-up above minimum input requirement. |
Applications
| GameStation Power Rails | Digital Set-Top Box Core Logic |
|---|---|
|
Use Scenario: Regulating 3.3V/1.5A for GPU memory interface and HDMI controller in portable gaming hardware. IC Role / Device Role / Timing Role: Primary synchronous buck regulator managing dynamic load transients during frame rendering and video decode bursts. Use Value: AAM mode maintains >89% efficiency during idle screen states, directly extending battery runtime by 18% versus non-PFM alternatives. |
Use Scenario: Generating stable 2.5V/1.5A for MPEG decoder SoC and USB PHY in cable/satellite STBs. IC Role / Device Role / Timing Role: Main system PMIC buck stage with tight line/load regulation (<±1.5%) across 4.7–16V AC/DC adapter inputs. Use Value: Fixed 500kHz frequency enables predictable EMI filter design and meets FCC Class B conducted emission limits without shielding. |
| Flat-Panel Monitor Logic Supply | Industrial HMI Display Backlight Driver Bias |
|
Use Scenario: Delivering 1.8V/1.5A to ARM-based display controller and LVDS transmitter in 24-inch LCD monitors. IC Role / Device Role / Timing Role: Secondary regulated rail supporting high-speed digital interfaces requiring sub-20mV ripple and fast load-step response. Use Value: Current-mode control achieves <50µs recovery from 10–90% load steps, preventing visible frame tearing during UI navigation. |
Use Scenario: Providing 5.0V/1.5A bias for LED driver ICs in ruggedized human-machine interface panels operating in 0–70°C ambient. IC Role / Device Role / Timing Role: Robust front-end converter with thermal shutdown and hiccup protection for unattended 24/7 operation. Use Value: 150°C thermal shutdown + 20°C hysteresis prevents latch-up during extended high-temperature operation, ensuring field reliability. |
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 |
|---|---|---|---|
| MP1476GQ-P | Higher 2A output, 650kHz fSW, improved light-load efficiency (AAM+), same TSOT23-6 footprint. | Supports higher current loads and tighter regulation in next-gen designs; not pin-compatible due to different BST configuration. | Select MP1476GQ-P for new designs requiring >1.5A or lower quiescent current; MP1469GJ-Z remains viable for legacy board refreshes. |
| RT7297CGE | 1.5A, 4.5–18V input, 600kHz, external MOSFETs required, QFN-10 package. | Requires external high/low-side switches and compensation components; offers greater flexibility but larger solution size. | Choose RT7297CGE only when custom MOSFET selection or thermal separation is needed; MP1469GJ-Z delivers faster time-to-market with integrated FETs. |
Compared with MP1476GQ-P and RT7297CGE, MP1469GJ-Z offers the smallest PCB footprint and lowest BOM count for ≤1.5A applications, though its 500kHz switching and lack of updated AAM+ algorithm make it less suitable for ultra-low-power or high-density designs.
Availability
MP1469GJ-Z is available at Aetrix Electronics and suitable for GameStations, digital set-top boxes, flat-panel television logic supplies, and industrial HMI displays requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MP1469GJ-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 MP1469 belongs to MPS's mainstream synchronous buck converter product line, engineered for cost-sensitive, space-constrained consumer and industrial applications where integration, thermal robustness, and ease of layout are prioritized over ultra-low IQ or digital configurability.
FAQ
What is the maximum recommended output current for MP1469GJ-Z under continuous operation?
The MP1469GJ-Z is rated for 1.5A continuous output current at TA = +25°C with proper PCB thermal design (4-layer board, 2-in² copper pour). Derating is required above 85°C ambient; at 125°C junction temperature, maximum sustainable load drops to ~1.0A due to thermal shutdown activation at 150°C.
Can MP1469GJ-Z operate with an input voltage below 4.7V?
No - the device incorporates an under-voltage lockout (UVLO) with a rising threshold of 4.2V (typical) and hysteresis of 340mV. Operation below 4.7V violates the recommended operating condition and may result in unstable regulation, intermittent shutdown, or failure to start. Minimum functional VIN is 3.85V, but reliable operation requires ≥4.7V.
Is an external bootstrap diode required for MP1469GJ-Z?
An external bootstrap diode is optional and recommended only when duty cycle exceeds 65% (e.g., VIN ≥ 7.7V for VOUT = 5V). It improves high-side gate drive efficiency by reducing BST capacitor discharge, especially in high-VIN/low-VOUT configurations. For most 12V→3.3V or 5V applications, the internal charging path suffices with a 1µF ceramic BST capacitor.
How does the AAM mode affect output voltage accuracy at light loads?
In AAM mode, the MP1469GJ-Z maintains output voltage accuracy within ±2% of nominal (e.g., ±66mV at 3.3V) due to continued feedback regulation via the 0.8V reference and error amplifier. Unlike burst-mode converters, AAM preserves regulation integrity by modulating pulse frequency rather than disabling regulation entirely.
What is the purpose of the 6.5V Zener clamp on the EN pin?
The internal 6.5V Zener diode on the EN pin protects against overvoltage damage when driven directly from supplies exceeding 6V. It limits EN pin current to <100μA when pulled up to 12V via ≥55kΩ resistor, enabling safe direct connection to VIN without external series resistance in most designs.
Why is MP1469GJ-Z marked "Not Recommended for New Designs"?
MPS issued this designation because MP1476GQ-P supersedes MP1469GJ-Z with higher current capability (2A), improved light-load efficiency (AAM+), and enhanced thermal performance - while retaining compatibility in many system-level functions. MP1469GJ-Z remains fully supported for existing designs and legacy production, with no announced obsolescence date.
MP1469GJ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.7V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 490kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MP1469GJ-Z FAQ
1.How can I place an order for MP1469GJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1469GJ-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 MP1469GJ-Z reliable?
The price and inventory of MP1469GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1469GJ-Z is usually 5 days.
3.What payment methods are accepted for MP1469GJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1469GJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1469GJ-Z?
MP1469GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1469GJ-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 MP1469GJ-Z?
For technical support, including MP1469GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1469GJ-Z requirements.
6.How does Aetrix verify that MP1469GJ-Z is sourced from the original manufacturer or authorized distributors?
All MP1469GJ-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 MP1469GJ-Z meets industry standards.
7.What is the process for return or replacement of MP1469GJ-Z?
All MP1469GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1469GJ-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 MP1469GJ-Z part is unused and in its original packaging.
Return procedure for MP1469GJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP1469GJ-Z Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
