P2680L-SH2-R Datasheet, PDF (1/5 Pages) Unisonic Technologies – Output Adjustable

UNISONIC TECHNOLOGIES CO., LTD
P2680
Preliminary
WIDE INPUT 2A
SYNCHRONOUS RECTIFIED
STEP-DOWN CONVERTER
CMOS IC
 DESCRIPTION
The UTC P2680 is a monolithic synchronous step-down, fixed
340kHz frequency, current-mode, PWM controller with an internal
power MOSFET. It achieves 2A continuous output current over a
wide input supply range from 4V to 26V with excellent load and line
regulation. Equipped with an external compensation pin, this device
offers user flexibility in determining loop dynamic.
Current mode control provides fast transient response and
cycle-by-cycle current limit. A PWM control circuit can provide the
duty ratio from 0 up to 90% linearly. An Under-Voltage-Lock-Output
(UVLO) circuit monitors the VIN supply voltage to prevent wrong
logic controls. Additional under voltage protections monitor the
voltage on FB pin for short-circuit protections.
In application, the UTC P2680 is suitable for portable devices
when it works as an ideal power supply in SOP-8L package.
 FEATURES
* 2A Output Current
*340KHz frequency of operation
* 4V~26V Input Voltage Range
* 20μA Shutdown Supply Current
* Output Adjustable
* Frequency FoldBack at Short Circuit
* VIN Under-voltage Lockout
* Thermal Shutdown
* OCP
* Programmable Soft-Start
* Up to 90% Efficiency
 ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
P2680L-SH2-R
P2680G-SH2-R
Package
HSOP-8
P2680L-SH2-R
(1)Packing Type
(2)Package Type
(3)Lead Free
(1) R: Tape Reel
(2) SH2: HSOP-8
(3) L: Lead Free, G: Halogen Free
HSOP-8
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 5
QW-R502-A32.b