MAX641BCSA+ Maxim Integrated Integrated Circuit (Small Outline Packages) In Stock
Maxim Integrated MAX641BCSA+ is a PWM voltage-mode switching regulator IC with 2V to 16.5V input range and 450mA maximum output current in an 8-pin SOIC package. Provides regulated 5V output for battery-powered and portable system designs. Available from stock with worldwide shipping.
- Manufacturer
- Maxim Integrated
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MAX641BCSA+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX641BCSA+?
- Wide 2V to 16.5V input voltage range enabling operation from single-cell lithium-ion up to 12V lead-acid battery sources in portable and industrial applications
- PWM voltage-mode control delivering up to 450mA output current at regulated 5.5V maximum output with low quiescent current for battery life optimization
- Compact 8-pin SOIC (R-PDSO-G8) package with single-function design minimizing external component count for space-constrained DC-DC converter implementations
What is MAX641BCSA+ used for?
The MAX641BCSA+ is designed for step-up (boost) DC-DC conversion in battery-operated portable devices requiring regulated 5V output from 2V to 16.5V input sources such as single-cell Li-Ion, alkaline, or lead-acid batteries. Its 450mA output current capability makes it suitable for powering microcontrollers, sensor nodes, and wireless communication modules in IoT devices and handheld instruments. Engineers use MAX641BCSA+ in low-power embedded systems and data logger boards where efficient PWM regulation from a 2V minimum input is essential.
What are the specifications of MAX641BCSA+?
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 16.5V |
| Input Voltage-Min | 2V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.45A |
| Output Voltage-Max | 5.5V |
| Output Voltage-Min | 4.5V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.4mA |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 45kHz |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX641BCSA+ datasheet?
MAX641BCSA+ Datasheet DownloadOfficial datasheet from Maxim Integrated
What are equivalent replacements for MAX641BCSA+?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and maximum output current of MAX641BCSA+ for battery-powered designs?
The MAX641BCSA+ operates from 2V to 16.5V input and delivers up to 450mA output current at up to 5.5V regulated output, making it suitable for boosting single-cell lithium-ion (2.7V to 4.2V) or two-cell alkaline batteries to a stable 5V rail for microcontroller and sensor circuits.
How does MAX641BCSA+ PWM control mode benefit noise-sensitive analog circuits compared to hysteretic regulators?
MAX641BCSA+ uses fixed-frequency PWM voltage-mode control, producing a predictable switching noise spectrum concentrated at the oscillator frequency rather than the variable-frequency switching noise of hysteretic regulators, which simplifies EMI filtering and reduces interference in circuits with analog signal chains operating at 5V output.
What external components are needed to implement a boost converter with MAX641BCSA+?
A typical MAX641BCSA+ boost converter requires an external inductor (typically 47µH to 100µH), a Schottky rectifier diode, an output filter capacitor (typically 100µF to 220µF), and a feedback resistor divider for output voltage setting, keeping total BOM additions to fewer than 6 components for a complete 450mA boost regulator.
When is MAX641BCSA+ a more appropriate choice than a linear regulator for 5V output from a 3.3V input?
MAX641BCSA+ is necessary whenever output voltage must exceed input voltage, such as boosting a 3.3V microcontroller supply rail to 5V for legacy peripheral operation, since linear regulators can only step down voltage. The MAX641BCSA+ maintains 5V output with as little as 2V input, achieving efficiency above 80% at full 450mA load.
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