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LTC1928-5

Features: ` Low Output Noise: 90VRMS (100kHz BW)` Fixed Output Voltage: 5V` Input Voltage Range: 2.7V to 4.4V` No Inductors Required` Uses Small Ceramic Capacitors` Output Current Up to 30mA` 550kHz Switching Frequency` Low Operating Current: 190mA` Low Shutdown Current: 4mA` Internal Thermal Shut...

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SeekIC No. : 004401956 Detail

LTC1928-5: Features: ` Low Output Noise: 90VRMS (100kHz BW)` Fixed Output Voltage: 5V` Input Voltage Range: 2.7V to 4.4V` No Inductors Required` Uses Small Ceramic Capacitors` Output Current Up to 30mA` 550kHz...

LTC1928-5 Data Sheet

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Part Number:
LTC1928-5
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

 ` Low Output Noise: 90VRMS (100kHz BW)
 ` Fixed Output Voltage: 5V
 ` Input Voltage Range: 2.7V to 4.4V
 ` No Inductors Required
 ` Uses Small Ceramic Capacitors
 ` Output Current Up to 30mA
 ` 550kHz Switching Frequency
 ` Low Operating Current: 190mA
 ` Low Shutdown Current: 4mA
 ` Internal Thermal Shutdown and Current Limiting
 ` Low Profile (1mm) ThinSOTTM Package 


Application

 · VCO Power Supplies for Cellular Phones
 · 2-Way Pagers
 · Wireless PCMCIA Cards
 · Portable Medical Instruments
 · Low Power Data Acquisition
 · Remote Transmitters
 · White LED Drivers
 · GaAs Switches


Specifications

VIN to Ground ..................................................0.3V to 5V
VOUT Voltage ..............................................0.3V to 5.25V
CPO to Ground ............................................................. 10V
CN/SHDN to Ground ......................... .0.3V to (VIN + 0.3V)
VOUT Short-Circuit Duration ................................. Indefinite
IOUT ........................................................................... 40mA
Operating Temperature Range (Note 2) ....40°C to 85°C
Maximum Junction Temperature ............................... 125°C
Storage Temperature Range .................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)...................... 300°C


Description

The LTC®1928-5 is a doubler charge pump with an internal low noise, low dropout (LDO) linear regulator. The part is designed to provide a low noise boosted supply voltage for powering noise sensitive devices such as high frequency VCOs in wireless applications.

An internal charge pump converts a 2.7V to 4.4V input to a boosted output, while the internal LDO regulator converts the boosted voltage to a low noise regulated output. The regulator is capable of supplying up to 30mA of output current. Shutdown reduces the supply current to <8A, removes the load from VIN by disabling the regulator and discharges VOUT to ground through a 200s witch.

The LTC1928-5 LDO regulator is stable with only 2mF on the output. Small ceramic capacitors can be used, reducing PC board area.

The LTC1928-5 is short-circuit and overtemperature protected.  The part is available in a 6-pin low profile (1mm)ThinSOT package.

 




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