［AP2152］

MS1348-E-00

1

2012/05

DESCRIPTION

The AP2152 is a 3 channel white LED driver IC. It is composed of a current mode DC/DC boost

converter with an internal power MOSFET and 3 channel constant current sources, which can drive up

to 10 LEDs per channel for a maximum of 30 LEDs.

is set at 75.8mA. The LED current can be run up to a maximum of 120mA with the appropriate

external set resistor on the ISET pin.

The AP2152 operates over a wide input voltage range from 4.25V to 35V, and the switching

frequency goes up to a maximum of 2.5MHz with the appropriate external set resistor on the RT pin.

The switching frequency can also be synchronized with an external signal.

The AP2152 provides the LED dimming function via an external PWM signal, with a frequency range

from 100Hz to 20KHz.

The AP2152 provides LED open protection, LED short protection, OVP pin short protection, channel

short protection, over voltage protection, over current protection, thermal protection and UVLO.

FEATURES

White LED driving number: Maximum 30 pieces (10 pieces in series x 3 in parallel)

LED maximum current: 120mA

Maximum switching frequency: 2.5MHz

PWM dimming frequency by applying external signal: Maximum 20kHz

Input voltage range: 4.25V∼

∼

∼

∼35V

Built-in 45V power MOSFET

Error flag through serial interface

Synchronize with External frequency

Master – Slave configuration

LED open protection

LED short protection

OVP pin short protection

Output channel short protection

Overvoltage protection (OVP)

Over current protection

Thermal protection

UVLO

20 pin HTSSOP with heat-sink package

APPLICATIONS

Display backlight

Lighting equipment

AP2152

3CH High Power WLED Driver