L1806G-SH2-R Datasheet, PDF (1/7 Pages) Unisonic Technologies – With internal Soft-Start

UNISONIC TECHNOLOGIES CO., LTD
L1806
3A, ULTRA LOW DROPOUT
(0.23V@3A) LINEAR
REGULATOR
CMOS IC
 DESCRIPTION
The UTC L1806 is a typical LDO with the features of very low
dropout voltage as low as 0.23V at output current 3A.
For normal operation, two supply voltages are necessary. One
called control voltage from other equipment can shutdown the
output voltage and it should pull and hold the voltage of EN pin less
than 0.5V. Another one is the main supply voltage whose purpose is
for main power conversion, to keep the power dissipation low, and
to make the dropout voltage lower.
Internally, in the UTC L1806, there’re many functions which
can be seen in the block figure to prevent the IC from being
damaged. Internal Power-On-Reset (POR) circuit can control the
two supply voltages to prevent fault operations of the circuit; the
thermal shutdown circuit is able to protect the device from over
thermal operation, and a current limit function will keep the device
work safely under current over-loads.
The UTC L1806 can be used as an ideal to provide well supply
voltage in the applications, such as front-side-bus termination on
motherboard, NB applications, front side bus V_TT (1.2V/3A) and
note book PC applications.
 FEATURES
* Low Dropout V_D=0.23V(typ.)@ I_OUT=3A
* Low ESR Output Capacitor
* V_REF=0.8V
* Fast Transient Response
* Output Voltage Adjustable through External Resistors
* POR(Power-On-Reset) controlling V_CNTL and V_IN
* With internal Soft-Start
* Internal Current Limit Protection
* Internal Under Voltage Protection
* Hysteretic Thermal Shutdown
* With Power-OK Output (with a Delay Time)
* Low Shutdown Quiescent Current (<30 uA)
* Shutdown/Enable Control Function
 ORDERING INFORMATION
Ordering Number
L1806G-SH2-R
L1806G-K10-3030-R
Package
HSOP-8
DFN-10(3×3)
Packing
Tape Reel
Tape Reel
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