MAX5025
NOT RECOMMENDED FOR NEW DESIGNS500kHz, 36V Output, SOT23, PWM Step-Up DC-DC Converters
- Part Models
- 2
- 1ku List Price
- Starting From $5.25
Part Details
- Input Voltage Range:
- 3V to 11V (MAX5026/MAX5028)
- 4.5V to 11V (MAX5025/MAX5027)
- Wide Output Voltage Range: VCC to 36V
- Output Power: 120mW (max)
- User-Adjustable Output Voltage with MAX5025/MAX5026 Using External Feedback Resistors
- Fixed 30V Output Voltage: MAX5027/MAX5028
- Internal 1.3Ω (typ), 40V Switch
- Constant PWM Frequency Provides Easy Filtering in Low-Noise Applications
- 500kHz (typ) Switching Frequency
- 1µA (max) Shutdown Current
- Small, 6-Pin SOT23 Package
The MAX5025–MAX5028 constant-frequency, pulse-width modulating (PWM), low-noise boost converters are intended for low-voltage systems that often need a locally generated high voltage. These devices are capable of generating low-noise, high output voltages required for varactor diode biasing in TV tuners, set-top boxes, and PCI cable modems. The MAX5025–MAX5028 operate from as low as 3V and switch at 500kHz.
The constant-frequency, current-mode PWM architecture provides for low output noise that is easy to filter. A 40V lateral DMOS device is used as the internal power switch, making the devices ideal for boost converters up to 36V. The MAX5025/MAX5026 adjustable versions require the use of external feedback resistors to set the output voltage. The MAX5027/MAX5028 offer a fixed 30V output. These devices are available in a small, 6-pin SOT23 package.
Applications
- Avalanche Photodiode Biasing
- LCD Power Supply
- Low-Noise Varactor Diode Biasing
- PCI Cable Modem
- Set-Top Box Tuner Power Supply
- TV Tuner Power Supply
- Voice-Over-Cable
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX5025EUT+ | Small-Outline Transistor Package | ||
| MAX5025EUT+T | Small-Outline Transistor Package |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
SPICE Model 1
Evaluation Kits
Evaluation Kit for the MAX5025, MAX5026, MAX5027, MAX5028
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