Features: ` Low Noise: 20VRMS (10Hz to 100kHz)
` Low Quiescent Current: 25A
` Wide Input Voltage Range: 1.8V to 20V
` Output Current: 150A
` Very Low Shutdown Current: < 1A
` Low Dropout Voltage: 300mV
` No Protection Diodes Needed
` Fixed Output Voltages: 2.5V, 3V, 3.3V, 5V
` Adjustable Output from 1.22V to 20V
` Stable with 2.2F Output Capacitor
` Stable with Aluminum, Tantalum or Ceramic Capacitors
` Reverse Battery Protection
` No Reverse Current
` Overcurrent and Overtemperature Protected
` 8-Lead MSOP Package
Application· Cellular Phones
· Battery-Powered Systems
· Frequency Synthesizers
· Noise-Sensitive Instrumentation Systems
Pinout
SpecificationsIN Pin Voltage ...................................................... ±20V
OUT Pin Voltage ................................................... ±20V
Input to Output Differential Voltage .................... ±20V
SENSE Pin Voltage ............................................... ±20V
ADJ Pin Voltage ...................................................... ±7V
BYP Pin Voltage.................................................... ±0.6V
SHDN Pin Voltage ................................................. ±20V
Output Short-Circut Duration.......................... Indefinite
Operating Junction Temperature Range
(Note 2) ............................................ 40°C to 125°C
Storage Temperature Range ............ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
DescriptionThe LT®1762 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 150A of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 25A quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators.
A key feature of the LT1762 regulators is low output noise. With the addition of an external 0.01mF bypass capacitor, output noise drops to 20mVRMS over a 10Hz to 100kHz bandwidth. The LT1762 regulators are stable with output capacitors as low as 2.2F. Small ceramic capacitors can be used without the series resistance required by other regulators.
Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The parts come in fixed output voltagesof 2.5V, 3V, 3.3V and 5V, and as an adjustable devicewith a 1.22V reference voltage. The LT1762 regulators are available in the 8-lead MSOP package.
LT1762 Data Sheet
