$0.99
Price update：a months ago
Available in stock：
2158
45
Serves customers in 45 countries
1000+
Worldwide Manufacturers
$140M
$140M Growth in 5 Years
50.0M+
50M Parts Shipped in 5 Years
Micrel Inc.
Microchip Technology Inc. stands as a preeminent purveyor of microcontroller and analog semiconductors, proffering a realm of diminished venture in product evolution, abridged aggregate system expenditure, and expedited market entry, spanning a myriad of heterogeneous patron implementations globally. With its central command stationed in Chandler, Arizona, Microchip avails itself of superlative technical assistance, concomitant with unwavering consignment and excellence.
View All Product from Micrel Inc.
The MIC4574-3.3BN is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200kHz MIC4574-3.3BN duplicates the pinout and function of the 52kHz LM2574. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size.
The MIC4574-3.3BN is available in 3.3V, and 5V fixed output versions or a 1.23V to 20V adjustable output version. Both versions are capable of driving a 0.5A load with excellent line and load regulation.
The feedback voltage is guaranteed to±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified voltages and load conditions. The oscillator frequency is guaranteed to ±10%.
In shutdown mode, the regulator draws less than 200µA standby current. The regulator performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions.
This series of simple switch-mode regulators requires a minimum number of external components and can operate using a standard series of inductors. Frequency compensation is provided internally.
The MIC4574-3.3BN is available in DIP (N) packages for the industrial temperature range.
Feature
- Fixed 200kHz operation
- 3.3V, 5V, and adjustable output versions
- Voltage over specified line and load conditions:
- Fixed version: ±3% max. output voltage
- Adjustable version: ±2% max. feedback voltage
- Guaranteed 0.5A switch current
- Wide input voltage range: 4V to 24V
- Wide output voltage range: 1.23Vto 20V
- Requires minimum external components
- < 200µA typical shutdown mode
- 75% efficiency (adjustable version > 75% typ.)
- Standard inductors and capacitors are
- 25% of typical LM2574 values
- Thermal shutdown
- Overcurrent protection
- 100% electrical thermal limit burn-in
Related Products
| Mfr Part # | Price ($) | Quantity Available | |
|---|---|---|---|
 MIC44F18YMMEIC GATE DRVR LOW-SIDE 8MSOP | 0.96 |
2333
Marketplace | |
 MIC44F19YMMEIC GATE DRVR LOW-SIDE 8MSOP | 1.38 |
228
Marketplace | |
 MIC4452ZTIC GATE DRVR LOW-SIDE TO220-5 | 4.82 |
3164
Marketplace | |
 MIC4452CTIC GATE DRVR LOW-SIDE TO220-5 | 2.20 |
4050
Marketplace |
Product Attributes
| TYPE | DESCRIPTION | Select all |
|---|---|---|
| Package | Bulk | |
| Product Status | Obsolete | |
| Function | Step-Down | |
| Output Configuration | Positive | |
| Topology | Buck | |
| Output Type | Fixed | |
| Number of Outputs | 1 | |
| Voltage - Input (Min) | 4V | |
| Voltage - Input (Max) | 24V | |
| Voltage - Output (Min/Fixed) | 3.3V | |
| Current - Output | 500mA | |
| Frequency - Switching | 200kHz | |
| Synchronous Rectifier | No | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Mounting Type | Through Hole | |
| Package / Case | 8-DIP (0.300", 7.62mm) | |
| Supplier Device Package | 8-PDIP |
Blog
Unveiling the Future: The Surge of Microcontrollers in 2024In the dynamic world of electronic components, microcontrollers stand out as a testament to innovation and versatility. As we edge closer to 2024, the landscape for microcontrollers and semiconductors, spearheaded by giants like STMicroelectronics, Texas Instruments, and Microchip, is set for remarkable transformation.
Microcontrollers vs. Microprocessors: Unveiling the Core Differences for Embedded Systems EngineeringSeasoned professionals in the realm of embedded systems engineering and product development within the electronics sphere often grapple with distinguishing between microcontrollers and microprocessors. Despite their foundational role in the design and fabrication of a myriad of electronic gadgets, understanding their unique functionalities based on mere definitions can be challenging:
A Deep Dive into the Global Ceramic Capacitors MarketJoin us in exploring the emerging subplot of environmental consciousness within the global ceramic capacitors market.
Mastering Current Measurement with MicrocontrollersUnlock precise current measurement secrets with Microcontrollers! Conquer challenges, meet superhero solutions, and revolutionize accuracy with on-chip Analog Core Independent Peripherals (CIPs).
What is a Rectifier Diode: A Guide to BeginnersMeet the unsung heroes of electronics—Rectifier Diodes! Explore their magic, applications, and join the behind-the-scenes adventure into gadget power.
$0.99
Price update：a months ago
Available in stock：
2158
Micrel Inc.
Microchip Technology Inc. stands as a preeminent purveyor of microcontroller and analog semiconductors, proffering a realm of diminished venture in product evolution, abridged aggregate system expenditure, and expedited market entry, spanning a myriad of heterogeneous patron implementations globally. With its central command stationed in Chandler, Arizona, Microchip avails itself of superlative technical assistance, concomitant with unwavering consignment and excellence.
View All Product from Micrel Inc.Blog
- Unveiling the Future: The Surge of Microcontrollers in 2024In the dynamic world of electronic components, microcontrollers stand out as a testament to innovation and versatility. As we edge closer to 2024, the landscape for microcontrollers and semiconductors, spearheaded by giants like STMicroelectronics, Texas Instruments, and Microchip, is set for remarkable transformation.
- Microcontrollers vs. Microprocessors: Unveiling the Core Differences for Embedded Systems EngineeringSeasoned professionals in the realm of embedded systems engineering and product development within the electronics sphere often grapple with distinguishing between microcontrollers and microprocessors. Despite their foundational role in the design and fabrication of a myriad of electronic gadgets, understanding their unique functionalities based on mere definitions can be challenging:
- A Deep Dive into the Global Ceramic Capacitors MarketJoin us in exploring the emerging subplot of environmental consciousness within the global ceramic capacitors market.
- Mastering Current Measurement with MicrocontrollersUnlock precise current measurement secrets with Microcontrollers! Conquer challenges, meet superhero solutions, and revolutionize accuracy with on-chip Analog Core Independent Peripherals (CIPs).
- What is a Rectifier Diode: A Guide to BeginnersMeet the unsung heroes of electronics—Rectifier Diodes! Explore their magic, applications, and join the behind-the-scenes adventure into gadget power.
Popular Manufacturers
View all manufactures More
Popular Parts Number
More Electronic Parts MoreMIC4574-3.3BN
BUCK REGULATOR
MIC2145BMM
2.5 WATT BOOST CONVERTER
MIC2172BM
100KHZ 1.25A SWITCHING REGULATOR
MIC2178-3.3BWM
2.5A SYNCHRONOUS BUCK REGULATOR
MIC2177BWM
2.5A SYNCHRONOUS BUCK REGULATOR
MIC5308-1.0YMT
LOW VIN/VOUT 150 MA HIGH PSRR UL
MIC5309-1.0YMT
LOW VIN/VOUT 300 MA HIGH PSRR UL
MIC4575-5.0BWM
IC REG LINEAR SWITCHING REG
MIC2296YML
HIGH POWER DENSITY 1.2A BOOST
MIC2208YML
3 MM X 3 MM 1 MHZ 3 A PWM BUCK R