
UNISONIC TECHNOLOGIES CO, LTD
UC621XX
CMOS IC
www.unisonic.com.tw
Copyright 2005 Unisonic Technologies Co., Ltd
1of 14
QW-R502-028,B
BOOS T ING V OLT AGE
REGULAT ORS
DES CRIPT ION
The UTC
UC621XX
is a positive output voltage regulator that can
supply up to 1A of output current using an external transistor. Low
power and high accuracy are achieved through CMOS process and
metal fuses trimming technologies.
The series consists of a high precision voltage reference, an error
correction circuit and a short-circuit protected output driver.
In stand-by mode, supply current can be dramatically cut. Since
the input-output voltage differential is small, loss control efficiency is
good.
The UTC
UC621XX
is particularly suited for use with battery
operated portable products, and products where supply current
regulation is required.
FEAT URES
* Ultra Small Input-Output Voltage Differential
: 100mA of output current is available with a differential of 0.1V.
(Performance depends on the external transistor characteristics.)
* Maximum Output Current : 1A
* Output Voltage Range : 2V ~ 6V in 0.1V increments
* Highly Accurate : Set-up voltage ±2%
* Low Power Consumption : Typ.50μA (V
OUT
= 5.0V)
: Typ.0.2μA (Stand-by)
* Output Voltage Temperature Characteristics: Typ. ±100ppm/
* Input Stability : Typ.0.1%/V
SOT-25
4
5
3
2
1
*Pb-free plating product number: UC621XXL
ORDERING INFORMAT ION
Order Number
Normal
Lead Free Plating
UC621xxL-AF5-R
Package
Packing
UC621xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
SOT-25
Tape Reel
UC621xxL-AF5-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(4)Output Voltage Code
(1) R: Tape Reel
(2) AF5: SOT-25
(3) L: Lead Free Plating, Blank: Pb/Sn
(4) xx: refer to Marking Information