LINEAR INTEGRATED CIRCUIT
ACTIVE IN SHUTDOWN
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.
*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.
*2-,3-,or 4-cell to 5V or 3.3V step-up
*Bar code scanners
*Diagnostic medical instrumentation.
*Personal data communicators/computers.
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UNISONIC TECHNOLOGIES CO., LTD. 1