Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies MB3800PNF-G-BND-JN-EFE1

Name: MB3800PNF-G-BND-JN-EFE1
Brand: Infineon Technologies
SKU: MB3800PNF-G-BND-JN-EFE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MB3800PNF-G-BND-JN-EFE1

Manufacturer:: Infineon Technologies

Category:: DC DC Switching Controllers

Package:: -

Datasheet:: MB3800PNF-G-BND-JN-EFE1.pdf

Description:: IC REG CTRLR BOOST 8SOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,608

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MB3800PNF-G-BND-JN-EFE1 from Cypress Semiconductor is a single-channel switching regulator controller IC designed for low-voltage DC-DC power conversion in battery-powered systems. It features 1.8 V minimum operating voltage, 1 MHz max switching frequency, integrated soft start and timer-latch short-circuit protection (SCP), and totem-pole output optimized for NPN transistor drive.

For engineers reviewing the MB3800PNF-G-BND-JN-EFE1 datasheet, MB3800PNF-G-BND-JN-EFE1 pinout, MB3800PNF-G-BND-JN-EFE1 application, or MB3800PNF-G-BND-JN-EFE1 equivalent, key selection criteria include low-V_CC operation down to 1.8 V, SCP time constant programmability via external capacitor, and error amplifier gain fixed internally to minimize external compensation components.

Technical Context

The MB3800 implements a voltage-mode PWM control architecture with an internal 1.25 V reference and rail-to-rail error amplifier output (FB pin). Its oscillator uses external R_T/C_T to set f_OSC from 10 kHz to 1 MHz, and its SCP circuit operates independently using the same SCP pin for both soft start timing and fault detection.

Control logic integrates a dedicated idle period adjustment section enabling duty cycle control up to 85%, while the BR/CTL pin sets output current capability by configuring internal drive strength - not a digital enable signal but an analog bias current input that directly modulates output stage sourcing/sinking capability.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.8 V to 15 V - supports direct Li-ion/Li-poly battery input without pre-regulation
Max Switching Frequency	1 MHz - enables compact magnetics and high transient response in space-constrained designs
Soft Start Time Constant	t_S ≈ 0.35 × C_PE - programmable via external capacitor on SCP pin (pin 2)
Short-Circuit Detection Time	t_PE ≈ 0.8 × C_PE - latch-type protection with automatic recovery only after power cycle
Standby Current	< 1 μA - enables ultra-low-power sleep mode in portable equipment
Error Amp Gain	70–145 V/V - fixed internal gain eliminates need for external feedback compensation network
Output Drive Type	Totem-pole - provides active pull-up/pull-down for fast NPN transistor gate control

Pinout & Package

MB3800PNF-G-BND-JN-EFE1 is packaged in SOP-8 (SOB008) with standard 1.27 mm pitch. Pin layout follows JEDEC MS-012AC, with thermal pad omitted.

Pin/Terminal	Circuit Role	Design Meaning
1: –IN	Error amplifier inverting input	Connects to voltage divider from regulated output; sets regulation point via 1.25 V internal reference
2: SCP	Soft start & SCP timing node	Single pin serves dual function: capacitor-based timing for startup ramp and fault detection delay
3: VCC	Power supply input	Accepts 1.8–15 V; powers all internal circuits including oscillator and output drivers
4: BR/CTL	Output current setting control	Analog input that adjusts internal totem-pole drive strength - not a logic-level enable
5: OUT	PWM output driver	Totem-pole output capable of ±40 mA sink/source; directly drives NPN base or external MOSFET gate
6: GND	Signal and power ground	Common return for all analog and power paths; requires low-impedance PCB connection
7: OSC	Oscillator timing interface	Connects external R_T/C_T to set switching frequency from 10 kHz to 1 MHz
8: FB	Error amplifier output	Open-collector compatible output; used for loop compensation or external monitoring

Key Features

Feature	Design Value
Integrated soft start	Programmable ramp time via single external capacitor on SCP pin - eliminates discrete RC networks
Timer-latch short-circuit protection	Dedicated SCP circuit latches OFF on overcurrent and requires full power reset - prevents auto-retry during sustained fault
Low-V_CC operation	Functional down to 1.8 V - enables direct use with single-cell Li-ion (2.5–4.2 V) or NiMH batteries
Fixed internal error amp gain	70–145 V/V gain range eliminates need for external compensation components - reduces BOM count and layout sensitivity
Adjustable output drive strength	BR/CTL pin sets output current capability from ~20 mA to ~60 mA - matches drive requirements of various NPN transistors

Applications

LCD Monitor Power Supply

Portable Medical Device PSU

Use Scenario: Provides regulated 5 V and 12 V rails for LCD panel backlight and logic from single 3.7 V Li-ion cell.

IC Role / Device Role / Timing Role: Primary PWM controller managing buck-boost topology with soft-start sequencing across multiple outputs.

Use Value: 1.8 V start-up ensures reliable boot under battery discharge; SCP prevents thermal runaway during backlight short events.

Use Scenario: Powers microcontroller, sensors, and wireless transceiver in handheld glucose meter with <10 μA standby requirement.

IC Role / Device Role / Timing Role: Low-quiescent switching controller delivering 3.3 V from partially discharged battery (2.8–4.1 V).

Use Value: Sub-1 μA standby current extends battery life; fixed gain simplifies loop stability across temperature and aging.

Industrial Sensor Node PSU

USB-Powered Test Equipment Module

Use Scenario: Generates isolated 5 V rail for RS-485 transceivers and analog front-end in battery-backed field sensor.

IC Role / Device Role / Timing Role: Controller for flyback-derived auxiliary supply; SCP protects against cable short during field deployment.

Use Value: Latch-type SCP avoids repeated fault cycling in unattended operation; 1 MHz capability shrinks transformer size.

Use Scenario: Supplies 3.3 V and 5 V from USB 5 V input to FPGA and ADC subsystems in portable oscilloscope module.

IC Role / Device Role / Timing Role: Secondary regulator controlling synchronous buck stage with precise soft-start to avoid USB port overcurrent trip.

Use Value: Programmable soft-start time prevents inrush current exceedance; totem-pole output ensures clean gate drive for low-R_DS(on) MOSFETs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar switching regulator controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS40210DGQ	Current-mode control; requires external slope compensation; no integrated SCP latch	Supports higher input voltages (up to 52 V); lacks soft start programmability via single capacitor	Preferred when wide VIN range and current sensing are required; not drop-in for low-VIN battery apps
LM5116WMAX/NOPB	Voltage-mode with adjustable frequency; includes hiccup-mode SCP; higher quiescent current (2.5 mA)	Designed for high-power industrial supplies; requires more external components for loop compensation	Chosen for robustness in 24 V systems; unsuitable where sub-1 μA standby is mandatory

Compared with TPS40210DGQ and LM5116WMAX/NOPB, MB3800PNF-G-BND-JN-EFE1 uniquely combines ultra-low start-up voltage (1.8 V), single-capacitor soft start/SCP timing, and sub-μA standby - making it irreplaceable in space- and energy-constrained single-cell battery systems.

Availability

MB3800PNF-G-BND-JN-EFE1 is available at Aetrix Electronics and suitable for LCD monitor power supplies, portable medical devices, industrial sensor nodes, and USB-powered test equipment requiring stable component supply across long production lifecycles.

Supply support for MB3800PNF-G-BND-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

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in microcontrollers, connectivity solutions, and power management ICs for embedded and industrial applications.

The MB3800 belongs to Cypress's legacy analog power controller product line, engineered specifically for cost-sensitive, low-voltage DC-DC conversion in portable and battery-operated equipment where minimal external components and ultra-low standby power are critical.

FAQ

What is the function of the BR/CTL pin on MB3800PNF-G-BND-JN-EFE1?

The BR/CTL pin is an analog input that sets the output drive strength of the totem-pole output stage. Applying a resistor between this pin and VCC establishes a bias current that directly controls sourcing/sinking capability - ranging from ~20 mA to ~60 mA - enabling optimization for different NPN transistor base drive requirements without changing the output stage design.

Can MB3800PNF-G-BND-JN-EFE1 operate with a 1.5 V input supply?

No. The absolute minimum operating supply voltage is 1.8 V per the datasheet's recommended operating conditions. Operation below 1.8 V risks failure to initiate soft start, unstable oscillator frequency, or incomplete error amplifier biasing - all verified in electrical characteristics testing at V_CC = 2 V minimum. Systems requiring lower VIN must use a charge pump or boost pre-regulator.

How does the SCP (short-circuit protection) behave after triggering?

Upon SCP activation, the OUT pin is forced low and the SCP pin remains latched at low voltage until the device is fully power-cycled. There is no automatic retry or hiccup mode - the latch requires removal and reapplication of VCC to reset. This behavior prevents thermal stress during sustained overload and is confirmed in the functional description section of the datasheet.

Is the FB pin intended for feedback or monitoring only?

The FB pin is the open-collector output of the internal error amplifier and serves both functions: it connects to the voltage divider for closed-loop regulation, and its rail-to-rail swing (0.05–0.87 V) allows real-time monitoring of loop activity. Unlike typical feedback pins, it is not a high-impedance sense node - external compensation must be applied between FB and –IN, as specified in the application example.

MB3800PNF-G-BND-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:: -

MB3800PNF-G-BND-JN-EFE1 FAQ

1.How can I place an order for MB3800PNF-G-BND-JN-EFE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MB3800PNF-G-BND-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 MB3800PNF-G-BND-JN-EFE1 reliable?

The price and inventory of MB3800PNF-G-BND-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 MB3800PNF-G-BND-JN-EFE1 is usually 5 days.

3.What payment methods are accepted for MB3800PNF-G-BND-JN-EFE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB3800PNF-G-BND-JN-EFE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MB3800PNF-G-BND-JN-EFE1?

MB3800PNF-G-BND-JN-EFE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MB3800PNF-G-BND-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 MB3800PNF-G-BND-JN-EFE1?

For technical support, including MB3800PNF-G-BND-JN-EFE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB3800PNF-G-BND-JN-EFE1 requirements.

6.How does Aetrix verify that MB3800PNF-G-BND-JN-EFE1 is sourced from the original manufacturer or authorized distributors?

All MB3800PNF-G-BND-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 MB3800PNF-G-BND-JN-EFE1 meets industry standards.

7.What is the process for return or replacement of MB3800PNF-G-BND-JN-EFE1?

All MB3800PNF-G-BND-JN-EFE1 units undergo pre-shipment inspection (PSI). If there is an issue with MB3800PNF-G-BND-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 MB3800PNF-G-BND-JN-EFE1 part is unused and in its original packaging.

Return procedure for MB3800PNF-G-BND-JN-EFE1:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…