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MP3398EGS-Z
Monolithic Power Systems Inc.
4-STRING, MAX 400MA/STRING, 80V
5403 Pcs New Original In Stock
LED Driver IC 4 Output DC DC Controller Step-Up (Boost) Analog, PWM Dimming 400mA 16-SOIC
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5.0 / 5.0
- (405 Ratings)
MP3398EGS-Z
Product Overview
11167145
DiGi Electronics Part Number
MP3398EGS-Z-DGManufacturer
Monolithic Power Systems Inc.
MP3398EGS-Z
Description
4-STRING, MAX 400MA/STRING, 80VInventory
5403 Pcs New Original In Stock
LED Driver IC 4 Output DC DC Controller Step-Up (Boost) Analog, PWM Dimming 400mA 16-SOIC
Quantity
Minimum 1
Minimum 1
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Warranty & Returns
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MP3398EGS-Z Technical Specifications
Category
Power Management (PMIC), LED Drivers
Packaging
Tape & Reel (TR)
Series
MP
Product Status
Active
Type
DC DC Controller
Topology
Step-Up (Boost)
Internal Switch(s)
No
Number of Outputs
4
Voltage - Supply (Min)
4.5V
Voltage - Supply (Max)
33V
Voltage - Output
80V
Current - Output / Channel
400mA
Frequency
100kHz
Dimming
Analog, PWM
Applications
Backlight
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Supplier Device Package
16-SOIC
Datasheet & Documents
HTML Datasheet
MP3398EGS-Z-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
1589-MP3398EGS-ZTR
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
늘 기대에 부응하는 제품과 정성스러운 지원에 감사드립니다.
грудня 02, 2025
Service de livraison très efficace. Je n'ai jamais dû attendre au-delà du délai prévu.
грудня 02, 2025
La gestion logistique est parfaite et leur choix d’emballage écologique est exemplaire.
грудня 02, 2025
Great value for money paired with warm, professional customer service.
грудня 02, 2025
They shipped my order promptly, and the tracking updates kept me informed every step of the way.
грудня 02, 2025
DiGi Electronics provides consistent packaging quality, giving confidence in their product protection.
грудня 02, 2025
I highly recommend DiGi Electronics for their diverse selection and honest prices.
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Frequently Asked Questions (FAQ)
What are the critical layout considerations when designing a PCB for the MP3398EGS-Z to avoid instability or efficiency loss in a 4-string LED backlight application?
When designing with the MP3398EGS-Z, prioritize a compact high-current loop for each of the four boost channels by placing input/output capacitors, inductors, and current-sense resistors as close as possible to the IC. Use a solid ground plane beneath the device and avoid splitting it under switching nodes. Ensure that the feedback (FB) traces are routed away from noisy switching paths and kept short to prevent noise coupling, which can cause dimming inaccuracies or output ripple. Thermal vias under the exposed pad are essential to manage junction temperature, especially at high ambient temperatures or when driving LEDs near the 80V output limit. Poor layout can lead to oscillations, reduced efficiency, or premature failure under load transients.
Can the MP3398EGS-Z safely replace the Texas Instruments TPS92691 in a 4-string automotive display backlight design without major circuit modifications?
Direct replacement of the TPS92691 with the MP3398EGS-Z is not recommended without careful evaluation. While both are 4-channel boost LED drivers, the MP3398EGS-Z lacks an internal FET and requires external MOSFETs, whereas the TPS92691 integrates them—this changes the power stage design, gate drive requirements, and thermal management. Additionally, the MP3398EGS-Z supports up to 80V output versus the TPS92691’s 60V limit, which may necessitate different inductor and diode selections. You must also verify dimming compatibility: the MP3398EGS-Z supports both analog and PWM dimming, but timing and control logic may differ. Always re-simulate the power stage and validate EMI performance before committing to the swap.
How does operating the MP3398EGS-Z near its maximum 80V output voltage affect long-term reliability in industrial LED lighting systems?
Operating the MP3398EGS-Z consistently near the 80V output limit increases stress on external components—particularly the boost diode, inductor, and output capacitors—raising the risk of premature aging due to voltage overshoot during transients or load dumps. While the IC itself is rated for 80V, sustained high-voltage operation reduces design margin and may accelerate insulation breakdown in PCB traces or connectors. To mitigate risk, derate the output voltage to ≤75V where possible, use high-reliability, low-ESR capacitors rated for ≥100V, and implement overvoltage protection (OVP) circuitry. Also ensure adequate creepage and clearance distances on the PCB to prevent arcing in humid or dusty environments.
What are the risks of using PWM dimming at low duty cycles with the MP3398EGS-Z in a medical display application requiring flicker-free performance?
At very low PWM dimming duty cycles (e.g., <5%), the MP3398EGS-Z may exhibit inconsistent channel-to-channel current matching or audible noise due to discontinuous conduction mode (DCM) operation and inductor current ripple. This can manifest as visible flicker or brightness non-uniformity across the four LED strings—unacceptable in medical displays. To maintain stable, flicker-free dimming, keep the PWM frequency above 200Hz and avoid extremely low duty cycles; instead, combine moderate PWM dimming with analog dimming for fine control. Ensure the PWM signal has clean edges and sufficient amplitude to prevent false triggering. Validate dimming linearity across the full range under worst-case temperature conditions (-40°C to 125°C) to confirm compliance with medical imaging standards.
Is it safe to parallel multiple MP3398EGS-Z devices to drive more than four LED strings in a high-brightness outdoor signage application?
Paralleling multiple MP3398EGS-Z ICs is technically possible but introduces significant synchronization and current-sharing challenges. Since each device operates independently with its own oscillator (100kHz typical), beat frequencies can cause interference and visible flicker in the display. Without master-slave clock synchronization or interleaving, uneven thermal loading and output current imbalance may occur, leading to premature LED degradation. If you must scale beyond four strings, consider using a dedicated multi-phase controller or select a higher-channel-count driver instead. If paralleling is unavoidable, synchronize the PWM dimming signals precisely and use matched inductors and feedback networks across all channels, while monitoring junction temperatures closely to avoid thermal runaway.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MP3398EGS-Z CAD Models
Monolithic Power Systems Inc. MP3398EGS-Z PCB symbols & footprints
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