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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Infineon Technologies MB39A123PMT-G-JN-EFE1

Name: MB39A123PMT-G-JN-EFE1
Brand: Infineon Technologies
SKU: MB39A123PMT-G-JN-EFE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MB39A123PMT-G-JN-EFE1

Manufacturer:: Infineon Technologies

Category:: DC DC Switching Controllers

Package:: -

Datasheet:: MB39A123PMT-G-JN-EFE1.pdf

Description:: IC REGULATOR 48LQFP

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Product details

Overview

MB39A123PMT-G-JN-EFE1 from Fujitsu Microelectronics is a 6-channel PWM DC/DC converter IC supporting synchronous rectification (ch.1), Zeta (ch.2–ch.4), Sepic (ch.5–ch.6), and inverting amplifier (ch.4) topologies. It delivers up to 300 mA per channel at VCCO = 7 V, features independent soft-start per channel, and operates across 2.5 V–11 V input with 1.7 V low-voltage startup on ch.5/ch.6 - optimized for multi-rail power in digital still cameras.

For engineers reviewing the MB39A123PMT-G-JN-EFE1 datasheet, MB39A123PMT-G-JN-EFE1 pinout, MB39A123PMT-G-JN-EFE1 application, or MB39A123PMT-G-JN-EFE1 equivalent, key selection criteria include per-channel topology support (synchronous buck/Zeta/Sepic/inverting), 200 kHz–2.0 MHz programmable switching frequency, ±1% reference voltage accuracy, 50 ns dead-time control, and dual-package availability (BCC-48++/LQFP-48P).

Technical Context

The MB39A123 integrates six independent DC/DC controller channels with dedicated error amplifiers (1.0 V ref for ch.1; 1.23 V ref for ch.2–ch.6), PWM comparators, and totem-pole gate drivers. Each channel supports configurable dead-time control (DTC2–DTC6), soft-start via external capacitor (CS1–CS6), and output voltage feedback via FBx pins.

Channel-specific architecture enables mixed-mode operation: ch.1 uses P-ch/N-ch complementary drive for synchronous buck; ch.2–ch.4 implement Zeta with P-ch high-side drive; ch.5–ch.6 use N-ch drive for Sepic; ch.4 includes an integrated inverting amplifier (−INA/OUTA) for negative rail generation. Oscillation frequency is set by RT/CT (200 kHz–2.0 MHz), and short-circuit protection is implemented via −INS comparator with external CSCP.

Key Specifications

Parameter	Value and Actual Design Meaning
Input voltage range	2.5 V to 11 V - supports single-cell Li-ion to multi-cell battery inputs
Low-start voltage (ch.5/ch.6)	1.7 V - enables operation from partially discharged batteries
Reference voltage accuracy	2.0 V ±1% (VREF); 1.0 V ±1% (ch.1 EA); 1.23 V ±1% (ch.2–ch.6 EA) - ensures tight output regulation tolerance
Switching frequency range	200 kHz to 2.0 MHz - allows EMI optimization and small external component selection
Standby current	0 µA (typ) - eliminates quiescent drain during system sleep
Per-channel output current	300 mA at VCCO = 7 V - defines maximum load capability with thermal margin
Dead time	50 ns - prevents shoot-through in synchronous FET pairs

Pinout & Package

MB39A123PMT-G-JN-EFE1 is packaged in LQFP-48P (FPT-48P-M26), a 7 mm × 7 mm, 0.5 mm pitch surface-mount package with exposed thermal pad. Pin assignments are fully defined in Fujitsu DS04-27257-2Ea.

Pin/Terminal	Circuit Role	Design Meaning
FB1–FB6	Error amplifier output	Feedback node for closed-loop voltage regulation per channel
−INE1–−INE6	Error amplifier inverted input	Connects to resistor divider for output voltage sensing
OUT1-1 / OUT1-2	P-ch / N-ch gate drive outputs	Complementary drive signals for synchronous buck (ch.1)
OUT2–OUT6	High-side (ch.2–ch.4) or low-side (ch.5–ch.6) FET gate drive	Configurable topology support via external FET selection
CTL1–CTL6	Channel enable/control input	Individual ON/OFF control with 1.0 V threshold
−INS / CSCP	Short-circuit detection comparator input / timing cap	Enables overcurrent shutdown using external RC network
VREF	2.0 V reference output	Stable bias source for external circuitry or feedback scaling
RT / CT	Oscillator timing resistor / capacitor	Set switching frequency independently of load or input conditions

Key Features

Feature	Design Value
Independent soft-start per channel	Prevents inrush current surges across multiple rails during power-up
Synchronous rectification (ch.1)	Reduces conduction loss vs. diode-based buck, improving efficiency at high load
Zeta topology support (ch.2–ch.4)	Enables non-inverting buck-boost with continuous input/output current
Sepic topology support (ch.5–ch.6)	Provides regulated positive output from input voltages both above and below target
Integrated inverting amplifier (ch.4)	Generates negative rail (e.g., −7.5 V) without external op-amp or charge pump

Applications

Digital Still Camera (DSC)

Digital Video Camera (DVC)

Use Scenario: Powering image sensor, ISP, LCD backlight, and memory interface from single Li-ion cell.

IC Role / Device Role / Timing Role: Multi-rail DC/DC controller managing 1.2 V core, 2.5 V I/O, 3.3 V logic, −7.5 V analog bias, and dual 15 V rails for CCD/CMOS sensors.

Use Value: Independent channel control enables staggered power sequencing and dynamic rail disabling to reduce standby power.

Use Scenario: Supporting high-resolution video capture with simultaneous sensor readout, encoder processing, and HDMI transmission.

IC Role / Device Role / Timing Role: Synchronizing six regulated supplies with precise soft-start timing to avoid supply interaction during mode transitions.

Use Value: 50 ns dead-time control prevents cross-conduction in high-frequency synchronous FETs, maintaining >90% efficiency at 1.5 MHz.

Surveillance Camera

Portable Medical Imaging Device

Use Scenario: Outdoor IP camera requiring wide-input-range power under variable battery/solar conditions.

IC Role / Device Role / Timing Role: Enabling Zeta (ch.2–ch.4) and Sepic (ch.5–ch.6) topologies to maintain stable 3.3 V and 5.0 V rails across 1.7 V–11 V input swing.

Use Value: 1.7 V startup on ch.5/ch.6 ensures boot-up from deeply discharged backup battery during mains failure.

Use Scenario: Battery-powered ultrasound probe needing isolated analog bias, low-noise digital rails, and fast transient response.

IC Role / Device Role / Timing Role: Delivering clean 1.2 V (core), 2.5 V (ADC), −7.5 V (op-amp bias), and dual 15 V (transducer driver) rails with <1% reference accuracy.

Use Value: ±1% VREF and EA references minimize gain drift in signal chain, preserving diagnostic accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-channel DC/DC controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ISL97693IRZ-T7A	4-channel LED driver with integrated MOSFETs; no Zeta/Sepic support; fixed 1.2 MHz fSW	Targeted for display backlight only; lacks independent soft-start and negative rail generation	Select when driving LEDs directly without external FETs and multi-topology flexibility is unnecessary
TPS65136RGER	3-channel (dual positive + inverting) PMIC; integrated LDOs; max 2.25 MHz fSW; no dead-time control	Designed for TFT-LCD bias; limited to three rails; no Zeta/Sepic or channel-by-channel enable	Choose for compact LCD panel power where integrated LDOs and smaller footprint outweigh topology flexibility

Compared with ISL97693IRZ-T7A and TPS65136RGER, MB39A123PMT-G-JN-EFE1 uniquely supports six independent channels with mixed topologies (synchronous buck/Zeta/Sepic/inverting), programmable dead-time, and true per-channel soft-start - making it suitable for complex portable imaging systems requiring custom rail sequencing and wide-input adaptability.

Availability

MB39A123PMT-G-JN-EFE1 is available at Aetrix Electronics and suitable for digital still cameras, surveillance systems, and portable medical imaging devices requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for MB39A123PMT-G-JN-EFE1 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

Fujitsu Microelectronics was a Japanese semiconductor manufacturer specializing in ASSPs for consumer, industrial, and automotive power management before its semiconductor business was acquired by Socionext Inc. in 2015.

MB39A123 belongs to Fujitsu's ASSP Power Supply family, designed specifically for multi-rail, battery-powered portable imaging equipment requiring flexible topology selection, low-voltage startup, and precise voltage regulation across diverse subsystems.

FAQ

What package type does MB39A123PMT-G-JN-EFE1 use?

MB39A123PMT-G-JN-EFE1 uses the LQFP-48P (FPT-48P-M26) package: a 7 mm × 7 mm, 0.5 mm pitch quad flat pack with exposed thermal pad. This matches the "PMT" suffix in the part number and is confirmed in Fujitsu DS04-27257-2Ea section "PIN ASSIGNMENTS (FPT-48P-M26)".

Does MB39A123PMT-G-JN-EFE1 integrate power MOSFETs?

No. MB39A123PMT-G-JN-EFE1 is a controller IC only - it drives external P-ch and/or N-ch MOSFETs via gate-drive outputs (e.g., OUT1-1/OUT1-2 for ch.1). The datasheet explicitly states "External main side FET gate driving" and "External synchronous rectification side FET gate driving", confirming discrete FET requirement.

Can MB39A123PMT-G-JN-EFE1 generate negative voltage without external components?

It provides an integrated inverting amplifier (−INA/OUTA pins, ch.4) but requires external resistors to set gain and polarity. The datasheet shows Vo4 = −7.5 V as a typical application using external feedback resistors - no charge pump or transformer is needed, but passive components are mandatory for output voltage definition.

What is the function of the −INS pin?

The −INS pin is the inverted input of an internal short-circuit protection comparator. When voltage at −INS falls below VREF (2.0 V), the comparator asserts low to trigger shutdown. It works with external CSCP capacitor to set detection delay and hysteresis - enabling adjustable overcurrent response without additional ICs.

MB39A123PMT-G-JN-EFE1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Type:: -

Function:: -

Output Configuration:: -

Topology:: -

Number of Outputs:: -

Output Phases:: -

Voltage - Supply (Vcc/Vdd):: -

Frequency - Switching:: -

Duty Cycle (Max):: -

Synchronous Rectifier:: -

Clock Sync:: -

Serial Interfaces:: -

Control Features:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

MB39A123PMT-G-JN-EFE1 FAQ

1.How can I place an order for MB39A123PMT-G-JN-EFE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MB39A123PMT-G-JN-EFE1 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 MB39A123PMT-G-JN-EFE1 reliable?

The price and inventory of MB39A123PMT-G-JN-EFE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB39A123PMT-G-JN-EFE1 is usually 5 days.

3.What payment methods are accepted for MB39A123PMT-G-JN-EFE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB39A123PMT-G-JN-EFE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MB39A123PMT-G-JN-EFE1?

MB39A123PMT-G-JN-EFE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MB39A123PMT-G-JN-EFE1 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 MB39A123PMT-G-JN-EFE1?

For technical support, including MB39A123PMT-G-JN-EFE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB39A123PMT-G-JN-EFE1 requirements.

6.How does Aetrix verify that MB39A123PMT-G-JN-EFE1 is sourced from the original manufacturer or authorized distributors?

All MB39A123PMT-G-JN-EFE1 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 MB39A123PMT-G-JN-EFE1 meets industry standards.

7.What is the process for return or replacement of MB39A123PMT-G-JN-EFE1?

All MB39A123PMT-G-JN-EFE1 units undergo pre-shipment inspection (PSI). If there is an issue with MB39A123PMT-G-JN-EFE1, 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 MB39A123PMT-G-JN-EFE1 part is unused and in its original packaging.

Return procedure for MB39A123PMT-G-JN-EFE1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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