MICROPOWER DC/DC CONVERTERS
UTC LT1304/LT1304-3.3V/LT1304-5.0V LINEAR INTEGRATED CIRCUIT
MICROPOWER DC/DC CONVERTERS WITH LOW-BATTERY DETECTOR ACTIV...
Description
UTC LT1304/LT1304-3.3V/LT1304-5.0V LINEAR INTEGRATED CIRCUIT
MICROPOWER DC/DC CONVERTERS WITH LOW-BATTERY DETECTOR ACTIVE IN SHUTDOWN
DESCRIPTION
The UTC LT1304 is a micropower step-up DC/DC converter ideal for use in small, low voltage, battery-operated systems. The devices operate from a wide input supply range of 1.5V to 8V. The UTC LT1304-3.3 and LT1304-5.0 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V.Quiescent current,120 μ A in active mode, decreases to just 10 μ A in shutdown with the low-battery detector still active. Peak switch current, internally set at 1A,can be reduced by adding a single resistor from the ILIM pin to ground. The high speed operation of the UTC LT1304 allows the use of small, surface-mountable inductors and capacitors.
SOP-8
DIP-8
FEATURES
*5V at 200mA from two cells. *10μA quiescent current in shutdown. *Operates with VIN as low as1.5V *Low battery detector active in shutdown *Low switch VCESAT:370mV at 1A typical. *120μA quiescent current in active mode. *Switching frequency up to 300kHz *Programmable peak current with one resistor. .
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APPLICATIONS
*2-,3-,or 4-cell to 5V or 3.3V step-up *Portable instruments *Bar code scanners *Palmtop computers *Diagnostic medical instrumentation. *Personal data communicators/computers.
PIN CONFIGURATION
LBI LBO V IN SW
1 2 3 4
8 7 6 5
FB(SENSE)* SHDN IL I M GND
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R103-018,A
UTC ...
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