SEMICO NDUC TORS

DESCRIPTION

The ZXLD1601 is a PFM inductive boost converter

designed to provide output voltages of up to 28V from

a 2.5V to 5.5V input supply.

The ZXLD1601 includes the output switch and peak

current sense resistor, and can provide up to 10mA

output current at maximum output voltage. Higher

current is available at lower output voltages.

Quiescent current is typically 60 A and a shutdown

function is provided to reduce this current to less than

100nA in the ‘off’ state.

ADVANCED FEATURES

output setting resistors.

with internal filter

FEATURES

Output voltage is set to a nominal value between 26V

and 28V, by an internal resistor network, but can be

adjusted to lower values by external resistors, an

external PWM control signal applied to the ‘Enable’

pin, or a combination of the two. Depending upon the

control frequency, the PWM signal will provide either

continuous (low ripple) or gated control. The PWM

filter components are contained within the chip.

Minimum output voltage is determined by the input

supply.

The device is assembled in a low profile SC70-6 pin

package.

APPLICATIONS

ZXLD1601

ISSUE 3 - AUGUST 2004

ADJUSTABLE DC - DC BOOST CONVERTER WITH INTERNAL SWITCH

IN SC70

1

PINOUT

TOP VIEW

TYPICAL APPLICATION CIRCUIT