Voltage Regulators. CYT8117 Datasheet

CYT8117 Regulators. Datasheet pdf. Equivalent


CYT CYT8117
1A positive Voltage Regulator
Description
The CYT8117-ADJ and CYT8117-1.2,-1.5, -1.8,
-2.5, -3.3 and -5 are low dropout three-terminal
regulators with 1A output current capability.
These devices have been optimized for low
voltage where transient response and minimum
input voltage are critical. The 2.85V version is
designed specifically to be used in Active
Terminators for SCSI bus.
On-chip thermal limiting provides protection
against any combination of overload and ambient
temperatures that would create excessive
junction temperatures.
Unlike PNP type regulators where up to 10% of
the output current is wasted as quiescent current,
the quiescent current of the CYT8117 flows into
the load, increasing efficiency.
The CYT8117 series regulators are available in
the industry-standard SOT-223, power packages.
Pin Configuration
CYT8117
Features
z Low dropout voltage
z Load regulation: 0.05% typical
z Optimized for Low Voltage
z On-chip thermal limiting-Standard SOT223
packages
z Three-terminal adjustable or fixed low
dropout1.2V,1.5V,1.8V, 2.5V, 3.3V ,5V , ADJ
. regulators
z ROHS Compliant and 100% Lead(Pb)-Free
Application
z Active SCSI terminators
z High efficiency linear regulators
z Post regulators for switching supplies
z Battery chargers
z 12V to 5V linear regulators
z Motherboard clock supply
Figure 1. Pin Assignments of CYT8117
Ordering Information
Device
CYT8117TXXLF
Marking
CYT8117TXXLF
CYT8117TALF
CYT8117TALF
Package
SOT-223
(Lead-free)
Vout
Fixed output voltages; XX denotes voltage
options (1.2V,1.5V,1.8V, 2.5V,3.3V and 5.0V)
Adjustable output voltage.
2008-12-03
SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY CO.,LTD
1
www.szcyt.com


CYT8117 Datasheet
Recommendation CYT8117 Datasheet
Part CYT8117
Description 1A Positive Voltage Regulators
Feature CYT8117; www.DataSheet4U.com 1A Positive Voltage Regulators (Preliminary) Description The CYT8117 series of .
Manufacture CYT
Datasheet
Download CYT8117 Datasheet




CYT CYT8117
Absolute Maximum Rating
Parameter
Vin
(VIN– VOUT) * IOUT
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
CYT8117
Min.
0
-65
Max.
18
See Figure 2
125
150
300
Unit
V
VIN-VOUT (V)
Figure 2. Absolute Maximum Safe Operating Area
Block Diagram
Figure 3. Block Diagram of CYT8117
2008-12-09
SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY CO.,LTD
2
www.szcyt.com



CYT CYT8117
CYT8117
Electrical Characteristic
Typicals and limits appearing in normal type apply for TJ=25 .Limits appearing in Boldface type apply
over the entire junction temperature for operation,0 to 125 .
Parameter
Conditions
Min Typ Max Units
(Note 2) (Note2) (Note 2)
Reference Voltage 1.5V (VIN- VOUT) 3.2V
1.225
1.250
1.275
V
10mA IOUT1A
(-2%)
(+2%)
10mA IOUT1A
CYT8117-1.2 ,2.7VVIN4.4V
1.152
1.200
1.248
V
Output Voltage
CYT8117-1.5, 2.8V VIN4.5V
CYT8117-1.8, 3.3V VIN5.0V
CYT8117-2.5, 4VVIN7.0V
1.470
1.764
2.450
1.500
1.800
2.500
1.530
1.836
2.550
V
V
V
CYT8117-3.3, 4.8V VIN6.5V
3.234
3.300
3.366
V
CYT8117-5.0, 6.5V VIN8.0V
4.900
5.000
5.100
V
Line Regulation (VOUT+ 1.5V) VIN12V,
0.035
0.2
%
(Note 3)
IOUT = 10mA
Load
(VIN-VOUT) = 2V,
0.2 0.5 %
Regulation(Note 3) 10mA IOUT1A
Dropout Voltage
VREF = 1%, Iout= 1A
1.100
1.250
V
Current Limit
(VIN-VOUT) = 2V
1.1 1.5
A
Adjust Pin Current
50 120 uA
Adjust Pin Current 1.5V (Vin-Vout ) 3.2V
0.2 5 uA
Change
10mA IOUT1A
Minimum Load 10mA IOUT1A
10
mA
Current(Note 4) 1.5V (VIN-VOUT) 3.2V
Quiescent Current VIN= VOUT+ 1.25V
5 13 mA
Ripple Rejection f=120Hz, Tantalum,
60 72
dB
(VIN-VOUT) = 3V, IOUT= 1A,
Thermal Regulation TA= 25°C, 30ms pulse
0.01 0.1 %/W
Temperature
0.5 %
Stability
Long-Term Stability TA= 125°C, 1000hrs.
0.3 %
RMS Output Noise TA= 25°C, 10Hzf 10kHz
0.003
%
(% of VOUT)
Thermal Resistance, SOT-223
15 °C/W
Junction to Case
Thermal Shutdown Junction Temperature
155 °C
Thermal Shutdown
25 °C
Hysteresis
Note 1: Typical Values represent the most likely parametric norm.
Note 2: All limits are guaranteed by testing or statistical analysis.
2008-12-09
SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY CO.,LTD
3
www.szcyt.com







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