Descripción del producto

The HV***1 is a current mode control LED driver IC designed to
control single switch PWM converters (buck, boost or buck-boost),
in a constant frequency or constant off-time mode. The controller
uses a peak current control scheme, (with programmable slope
compensation), and includes an internal transconductance amplifier
to control the output current in closed loop, enabling high output
current accuracy (in the case of buck and buck-boost converters,
the high side output current can be sensed by using the HV***0).
In the constant frequency mode, multiple HV***1s can by
synchronized to each other, or to an external clock, using the SYNC
pin. Programmable MOSFET current limit enables current limiting
during under voltage and output overload conditions. The IC
also includes a 0.*5A source and 0.5A sink gate driver for high power
applications. An internal 9 to **0V linear regulator powers the IC,
eliminating the need for a separate power supply for the IC. HV***1
provides a TTL compatible, PWM dimming that can accept an
external control signal with a duty ratio of ****0% and a frequency
of up to a few kilohertz.

The HV***1 based LED driver is ideal for RGB backlight applications
with DC s. The HV***1 based LED Lamp drivers can achieve
efficiency in excess of *0% for buck and boost applications.