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TK11821

Features: Very Low Noise Very Small SizeFew External Components Wide Supply Voltage Range (0.9 to 10 V) Sinewave OscillatorSelectable Output VoltagesApplicationVariable Capacitance and PIN Photodiode BiasPortable InstrumentationRadio Control Systems Mobile Radios Cellular Telephones Cordless Telep...

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SeekIC No. : 004519726 Detail

TK11821: Features: Very Low Noise Very Small SizeFew External Components Wide Supply Voltage Range (0.9 to 10 V) Sinewave OscillatorSelectable Output VoltagesApplicationVariable Capacitance and PIN Photodiod...

TK11821 Data Sheet

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Part Number:
TK11821
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: 2025/1/11

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Product Details

Description



Features:

 Very Low Noise
Very Small Size
Few External Components
Wide Supply Voltage Range (0.9 to 10 V)
Sinewave Oscillator
Selectable Output Voltages


Application

 Variable Capacitance and PIN Photodiode Bias
Portable Instrumentation
Radio Control Systems
Mobile Radios
Cellular Telephones
Cordless Telephones
Fiberoptic Receivers
Local Area Network (LAN) Receivers
Battery Operated Equipment


Pinout

Connection Diagram


Specifications

Input Voltage ............................................................ 10 V
Output Voltage ......................................................... 26 V
Output Current ..................................................... 0.5 mA
Operating Voltage Range............................... 0.9 to 10 V
Power Dissipation (Note 1) ................................ 350 mW
Junction Temperature .......................................... 150 °C
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ................. -20 to +70 °C
Lead Soldering Temp. (10 sec.) ........................... 260 °C


Description

The TK11821 is a low power, low input voltage DC-DC converter. The device has been optimized for variable capacitance diode and PIN photodiode bias applications. It generates 10 Vdc and 24 Vdc output voltages from an input voltage as low as 0.9 V.

Since the built-in high frequency oscillator generates sinewaves, the TK11821 produces very low RF interference noise. The internal oscillator is capable of operation at frequencies as high as 6-8 MHz, therefore, interference filtering is simple and effective. This unique feature makes the TK11821 ideally suitable for RF and fiber optic receiver applications.

The device TK11821 is capable of operation in the 0.9 to 10 V power supply voltage range.

The TK11821 output voltage is 24 V when T1 is not connected. When T1 is connected to VO, the output voltage is set to 10 V.

The TK11821 is available in an 8-pin plastic surface mount (MFP-8) package. External inductive components are also available.




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