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MAX5028

Features: `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 1.3 (t...

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MAX5028: Features: `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...

MAX5028 Data Sheet

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Part Number:
MAX5028
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

`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 1.3 (typ), 40V Switch
`Constant PWM Frequency Provides Easy Filtering in Low-Noise Applications
`500kHz (typ) Switching Frequency
`1A (max) Shutdown Current
`Small, 6-Pin SOT23 Package


Application

·TV Tuner Power Supply
·Low-Noise Varactor Diode Biasing
·Set-Top Box Tuner Power Supply
·PCI Cable Modem
·Voice-Over-Cable
·LCD Power Supply
·Avalanche Photodiode Biasing




Pinout

Connection Diagram


Specifications

VCC to GND............................................................-0.3V to +12V
PGND to GND .......................................................-0.1V to +0.1V
FB to GND (MAX5025/MAX5026)..................-0.3V to (VCC + 0.3V)
FB to GND (MAX5027/MAX5028).............................-0.3V to +40V
SHDN to GND...............................................-0.3V to (VCC + 0.3V)
LX to GND ..............................................................-0.3V to +45V
Peak LX Current ...............................................................600mA
Operating Temperature Range .............................-40 to +85
Continuous Power Dissipation (TA = +70)
6-Pin SOT23 (derate 7.1mW/ above +70)...............695.7mW
Junction Temperature........................................................+150
Storage Temperature Range ...............................-65 to +165
Lead Temperature (soldering 10s) ....................................+300


Description

The MAX5025MAX5028 constant-frequency, pulsewidth 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 MAX5025MAX5028 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 versionsrequire 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.




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