DESCRIPTION
The TK11840L-G is a step-up DC-DC converter that drives an external NPN power transistor using a constant frequency PWM architecture. The IC works with a wide operating supply range (1.8V to 10V) and has an adjustable output. The IC timing oscillator operating frequency is programmable and
can be set up to 1MHz. It also incorporates a soft-start circuit and a short-circuit detection function of a timer-latch type.
FEATURES
ÂOperation from 1.8V to 10.0V supply
ÂAdjustable output voltage
ÂHigh speed adjustable OSC: up to 1MHz
ÂIncorporates a soft start circuit
ÂIncorporates a short circuit detection of a timer-latch
ÂTotem-pole type output in which drive current is adjustable using an switching resistor: pin 4
Â1µA or less shutdown current
ÂSmall package: SOT23L-8
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