The PT4110 is a high efficiency step-up DC/DC converter designed for driving multiple strings of up to

eight series-connected white LED from a single cell Lithium Ion battery. It regulates the output

current, ideal for driving light emitting diodes (LED) whose light intensity is proportional to the

current passing through them. The external ballast resistor sets the LED current ranging from 5mA

to 20mA, which can be easily adjusted using either a DC voltage or a pulse width modulated (PWM)

signal alternatively. Its low 300mV feedback voltage reduces power loss and improves efficiency.
The PT4110 has multiple features to protect itself from fault conditions including built-in open load

protection, cycle-by-cycle current limit, over temperature shutdown, input under voltage control and

integrated soft-start.

The PT4110 is available in SOT-89-5 and SOP-8 packages.

特點:
z 2.7V to 5.5V Input Voltage Range
z 35V Maximum Step-Up Voltage
z <1μA Shutdown Mode
z 1.2MHz Fixed Frequency Operation
z Cycle-By-Cycle Current Limit
z Open Load Protection z Under Voltage Lockout
z Integrated Soft-Start
z Thermal Shutdown
z Frequency Jittering for better EMI performance
z SOT89-5 or SOP8 package
z RoHS compliant
應用：
z White LED Power Suppliers
z Flat Screen LCD Bias Suppliers
z Portable Media Players z GPSs

z General middle-sized LCD backligh

公司:深圳市哲瀚電子科技有限公司

聯系人:陳小姐

手機:13714441972

電話:0755-82549527/83259945/13714441972

傳真:0755-83259945

地址:廣東省深圳市福田區中航路都會軒1213