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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Infineon Technologies MB39C316PW-G-ERE1

Name: MB39C316PW-G-ERE1
Brand: Infineon Technologies
SKU: MB39C316PW-G-ERE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MB39C316PW-G-ERE1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear + Switching

Package:: 49-WFBGA, WLCSP

Datasheet:: MB39C316PW-G-ERE1.pdf

Description:: IC REG 7OUT BUCK/BST/LNR 49WLCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MB39C316PW-G-ERE1 from Fujitsu (now part of Cypress Semiconductor) is a highly integrated power management IC for mobile terminals, featuring three DC/DC converters-including two synchronous step-down and one buck-boost-and four LDOs. It operates from a single 1-cell Li-ion battery (2.7–5.5 V), delivers up to 800 mA on DC/DC1, supports I²C-based system control, and integrates RTC clock output and comprehensive protection (OCP, SCP, UVLO, OTP).

For engineers reviewing the MB39C316PW-G-ERE1 datasheet, MB39C316PW-G-ERE1 pinout, MB39C316PW-G-ERE1 application, or MB39C316PW-G-ERE1 equivalent, key selection criteria include multi-rail voltage sequencing, dynamic mode switching (PWM/PFM), I²C programmability, LDO output voltage selectability (e.g., LDO3 at 1.2 V/1.3 V), and WL-CSP package suitability for space-constrained mobile WiMAX and handheld designs.

Technical Context

The MB39C316 implements a mixed-mode power architecture: two current-mode synchronous buck converters (DC/DC1: 1.2 V/800 mA; DC/DC2: 1.825 V/600 mA) and one buck-boost converter (DC/DC3: 3.3 V/650 mA) with dual inductor connections. Load-current detection enables automatic PWM-to-PFM transition per channel for efficiency optimization across light-to-heavy loads.

It integrates four user-configurable LDOs-LDO1 (2.875 V/200 mA), LDO2 (1.225 V/260 mA), LDO3 (1.2 V or 1.3 V/84 mA), LDO4 (2.925 V/6.5 mA)-plus an internal reference LDO and RTC power rail. All regulators are controlled via I²C (up to 400 kbps), with dedicated reset outputs (XRST1/XRST2), ONOFF enable, and crystal oscillator interface (32.768 kHz).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7 V to 5.5 V - Supports direct operation from single-cell Li-ion battery without pre-regulation.
DC/DC1 Output	1.2 V / 800 mA - Synchronous buck regulator for core logic or processor I/O supply with low dropout and high PSRR.
DC/DC3 Mode	Buck-boost - Maintains stable 3.3 V output across battery discharge (2.7–4.2 V), critical for RF front-end or memory interfaces.
LDO3 Selectable Voltage	1.2 V or 1.3 V via register - Enables dynamic voltage scaling for application processors or DSPs requiring adaptive core voltage.
I²C Interface Speed	Up to 400 kbps - Allows real-time configuration and status monitoring without dedicated control lines or GPIO overhead.
Package Dimensions	3.14 mm × 3.11 mm × 0.8 mm WL-CSP - Ultra-compact footprint optimized for thin mobile terminal PCB stacking.
Protection Functions	OCP, SCP, UVLO, OTP - Hardware-level fault response ensures system reliability during transient overloads or thermal stress.

Pinout & Package

MB39C316PW-G-ERE1 uses a 49-pin Wafer-Level Chip Scale Package (WL-CSP) measuring 3.14 mm × 3.11 mm × 0.8 mm, designed for high-density mobile PCB layouts with minimal board area and thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
VCC1, VCC2, VCC3, VCC4, VCC_D	Power supply inputs	Dedicated rails for LDO control, LDO output stages, and DC/DC controller blocks-enables independent supply domain isolation and noise containment.
LDOOUT1–LDOOUT4	LDO output pins	Four regulated outputs (2.875 V, 1.225 V, 1.2/1.3 V, 2.925 V) with defined current capability-supports multi-voltage SoC subsystems without external regulators.
SWOUT1–SWOUT32, SWIN31–SWIN32, DDOUT31–DDOUT32	DC/DC switching nodes	Separate high-side/low-side and output terminals for all three converters-permits optimal inductor placement and minimizes parasitic coupling in RF-sensitive designs.
SCL / SDA	I²C interface	Standard bidirectional I²C bus interface for register read/write, enabling runtime voltage adjustment, fault logging, and sequencing control.
OSCIN / OSCOUT / RTC_CLK	RTC timing interface	Direct 32.768 kHz crystal connection and buffered clock output-eliminates need for external RTC oscillator or clock buffer IC.
X_RST1 / X_RST2	Reset outputs	Open-drain reset signals synchronized to power-good status-provides hardware-level system initialization for baseband and application processors.

Key Features

Feature	Design Value
Automatic PWM/PFM mode switching	Per-channel load detection enables seamless transition between high-efficiency PFM (light load) and high-accuracy PWM (heavy load), extending battery life without software intervention.
Register-selectable LDO3 output	LDO3 voltage can be set to either 1.2 V or 1.3 V via I²C write-supports dynamic voltage scaling for performance vs. power trade-offs in application processors.
Dedicated RTC power rail (VIN_RTC)	Independent 2.325–2.475 V input for real-time clock block-ensures continuous timekeeping during main system sleep or brownout conditions.
Integrated reference voltage outputs (VFIL1/VFIL2)	Two 0.47 µF-filtered reference outputs stabilize internal analog circuits-reduces external component count and improves ADC/DAC accuracy in mixed-signal subsystems.
Multi-domain ground separation (DGND/AGND/GND)	Seven isolated ground pins separate digital, analog, DC/DC, and RTC domains-minimizes cross-talk and improves noise immunity in RF-critical mobile platforms.

Applications

Mobile WiMAX Terminal Power System

Smartphone Baseband Subsystem

Use Scenario: Compact WiMAX CPE or handheld terminal powered by single Li-ion cell with stringent size and thermal constraints.

IC Role / Device Role / Timing Role: Primary PMIC managing all voltage rails for WiMAX RF transceiver, baseband ASIC, and display interface.

Use Value: Buck-boost DC/DC3 maintains stable 3.3 V for RF PA across full battery range; integrated RTC_CLK eliminates external crystal oscillator.

Use Scenario: Dual-core application processor platform requiring sequenced, low-noise supplies and dynamic voltage scaling.

IC Role / Device Role / Timing Role: Centralized power controller coordinating LDO and DC/DC outputs under I²C host supervision.

Use Value: LDO3's register-selectable 1.2 V/1.3 V enables real-time core voltage adjustment; automatic PFM mode extends standby battery life.

Portable Medical Handheld Monitor

Industrial Handheld Scanner

Use Scenario: Battery-powered diagnostic device with LCD, touch controller, and wireless BLE module requiring clean, reliable power.

IC Role / Device Role / Timing Role: Single-chip power solution delivering isolated LDO rails for analog sensors, digital logic, and RF sections.

Use Value: Multi-ground architecture (DGND/AGND/GND) suppresses switching noise in sensitive analog front-end; OCP/OTP ensures safe operation during field use.

Use Scenario: Rugged barcode scanner operating in variable ambient temperatures and frequent drop environments.

IC Role / Device Role / Timing Role: Robust PMIC providing sequenced startup, brownout recovery, and fault-safe shutdown.

Use Value: UVLO and OTP protection prevent latch-up or damage during cold-start or overheating; XRST1/XRST2 provide deterministic reset signaling to MCU and imaging sensor.

Equivalent & Alternatives

The following parts are listed as comparable options for similar power management IC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
RT8059ZSP	Single synchronous buck (3 A) + 2 LDOs; no buck-boost, no I²C, no RTC interface	Targeted at simpler embedded systems without multi-rail sequencing or real-time clock needs	Select when only basic step-down regulation is required and cost sensitivity outweighs feature richness.
TPS65023BRSBT	3 buck + 2 LDO + I²C + RTC; different pinout, larger QFN-48 package (5 mm × 5 mm), higher quiescent current	Designed for broader industrial temperature range (−40°C to +85°C) and higher current demands	Choose for extended temp operation or where WL-CSP assembly is not feasible; verify layout compatibility due to package size difference.

Compared with RT8059ZSP and TPS65023BRSBT, MB39C316PW-G-ERE1 uniquely combines buck-boost capability, ultra-compact WL-CSP packaging, and integrated RTC clock generation-making it optimal for space-constrained, battery-powered mobile terminals requiring full-system power orchestration.

Availability

MB39C316PW-G-ERE1 is available at Aetrix Electronics and suitable for mobile WiMAX terminals, smartphone baseband subsystems, and portable medical handheld monitors requiring stable component supply, long-term lifecycle support, and consistent WL-CSP packaging.

Supply support for MB39C316PW-G-ERE1 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-acquired by Cypress Semiconductor in 2014-was a leading Japanese semiconductor supplier specializing in ASSPs for mobile, automotive, and industrial applications before integration into Infineon Technologies.

The MB39C316 belongs to Fujitsu's ASSP Power Management IC family, engineered specifically for single-cell Li-ion powered mobile terminals demanding high integration, low quiescent current, and I²C-based system-level power control.

FAQ

What is the maximum allowable input voltage for VCC_D and VDD1–VDD32?

The absolute maximum rating for VCC_D, VDD1, VDD2, VDD31, and VDD32 is +6.0 V, but recommended operation is strictly limited to 2.7–5.5 V. Exceeding 5.5 V risks permanent damage to internal gate oxides and may trigger immediate UVLO shutdown or irreversible latch-up.

Can LDO3 output voltage be changed dynamically during operation?

Yes-LDO3 output is selectable between 1.2 V and 1.3 V via I²C register write (address 0x0A, bit 0). The change occurs within 200 µs after register update and requires no power cycle, enabling real-time voltage scaling for performance adaptation.

Is an external crystal required for RTC_CLK output functionality?

Yes-RTC_CLK output requires a 32.768 kHz tuning-fork crystal connected between OSCIN and OSCOUT. Without this crystal, the RTC block remains inactive and RTC_CLK stays low; no internal RC oscillator substitutes for this function.

How does the MB39C316 handle overcurrent events on DC/DC converters?

Each DC/DC converter features cycle-by-cycle overcurrent protection (OCP). Upon current limit detection, the affected channel shuts down immediately, asserts its corresponding reset signal (XRST1/XRST2 if configured), and holds in hiccup mode until the fault clears and ONOFF is toggled or I²C reset command issued.

MB39C316PW-G-ERE1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 49-WFBGA, WLCSP

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Topology:: Step-Down (Buck) Synchronous (2), Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (4)

Number of Outputs:: 7

Frequency - Switching:: 1.7MHz

Voltage/Current - Output 1:: 2.88V, 200mA

Voltage/Current - Output 2:: 1.225V, 260mA

Voltage/Current - Output 3:: Adjustable, 84mA

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: No

Voltage - Supply:: 1.75V ~ 5.5V

Operating Temperature:: -30°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 49-WLCSP (3.14x3.11)

MB39C316PW-G-ERE1 FAQ

1.How can I place an order for MB39C316PW-G-ERE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MB39C316PW-G-ERE1 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 MB39C316PW-G-ERE1 reliable?

The price and inventory of MB39C316PW-G-ERE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB39C316PW-G-ERE1 is usually 5 days.

3.What payment methods are accepted for MB39C316PW-G-ERE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB39C316PW-G-ERE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MB39C316PW-G-ERE1?

MB39C316PW-G-ERE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MB39C316PW-G-ERE1 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 MB39C316PW-G-ERE1?

For technical support, including MB39C316PW-G-ERE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB39C316PW-G-ERE1 requirements.

6.How does Aetrix verify that MB39C316PW-G-ERE1 is sourced from the original manufacturer or authorized distributors?

All MB39C316PW-G-ERE1 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 MB39C316PW-G-ERE1 meets industry standards.

7.What is the process for return or replacement of MB39C316PW-G-ERE1?

All MB39C316PW-G-ERE1 units undergo pre-shipment inspection (PSI). If there is an issue with MB39C316PW-G-ERE1, 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 MB39C316PW-G-ERE1 part is unused and in its original packaging.

Return procedure for MB39C316PW-G-ERE1:

1.Submit a request within 90 days.

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

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