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CYT8117 [ETC]

; - 12号的铝制车身绘（ RAL 7032 ）
CYT8117
型号： CYT8117
厂家： ETC    ETC
描述：


- 12号的铝制车身绘（ RAL 7032 ）
文件： 总6页 (文件大小：135K)
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CYT 8117  
1A Positive Voltage Regulator  
General Description  
Features  
The CYT8117 series of high performance low  
dropout voltage regulators are designed gor  
applications that require efficient conversion  
and fast transient response.  
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1.1V dropout at full load current（Typ）  
Low Dropout Performance.  
Guaranteed 1A Output Current.  
Wide Input Supply Voltage Range.  
Over-temperature and Over-current Protection.  
Fixed or Adjustable Output Voltage.  
Rugged 3KV ESD withstand capability.  
Available in SOT-223 Packages.  
Applications  
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Active SCSI Terminators.  
High Efficiency Linear Regulators.  
5V to 3.3V Linear Regulators  
Motherboard Clock Supplies.  
SOT-223 Package  
ShenZhen CYT IC Design CO ,Ltd  
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CYT 8117  
Pin Configuration  
1. ADJ/GND  
2. OUT  
3. VIN  
SOT-223  
Typical Application  
Adjustable Voltage Regulator  
Fixed Voltage Regulator  
ShenZhen CYT IC Design CO ,Ltd  
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CYT 8117  
Ordering Information  
CYT8117T-  
-LF  
X
X
Lead-free  
Output Voltage:15 : Vout=1.5V  
18 : Vout=1.8V  
25 : Vout=2.5V  
30 : Vout=3.0V  
33 : Vout=3.3V  
A : Vout=ADJ  
Electrical Characteristic  
VIN,MAX ≤ 8V, VIN,MIN – VOUT = 1.5V, IOUT = 10mA, CIN = 10µF, COUT = 22µF, TJ = 0 – 125°C, unless otherwise specified.  
Symbol  
Parameter  
Conditions  
(VIN-VOUT)=1.5V , IOUT=  
10mA, TA=25℃  
CYT8117T15  
Min  
Typ Max Units  
1.5  
VOUT  
Output Voltage(1)  
CYT8117T18  
-2％  
1.8  
2.5  
2.8  
3.0  
+2％  
V
CYT8117T25  
CYT8117T30  
CYT8117T33  
Reference Voltage(1)  
(Adi. Volage Version)  
(VIN-VOUT)=1.5V , IOUT=  
10mA,  
V
VREF  
-2％  
1.25  
0.3  
-2％  
VOUT+1.5V <VIN< 8V IOUT=  
10mA,  
VSR  
Line Regulation(1)  
--  
--  
％
(VIN-VOUT)=1.5V ,  
10mA≤IOUT≤1A,  
VLR  
IADJ  
Load Regulation(1)  
--  
--  
--  
0.4  
48  
--  
--  
--  
％
uA  
uA  
Adjust Pin Current  
Adjust Pin Current  
Change  
VOUT+1.5V <VIN< 8V  
10mA≤IOUT≤1A,  
∆IADJ  
0.2  
VD  
IQ  
Dropout Voltage(2)  
∆VREF=1％, IOUT=1A  
--  
--  
1.1  
10  
--  
--  
V
Quiescent Current  
Fixed Output Version  
mA  
IO  
ICL  
Minimum Load Current  
Current Limit  
--  
--  
--  
--  
--  
4
--  
--  
--  
--  
--  
mA  
A
1.8  
TC  
Temperature Voefficient  
Thermal Protection  
RMS Output Noise  
0.07  
175  
0.003  
％/℃  
℃
OTP  
VN  
TA=25℃, 10Hz ≤ f ≤ 10KHz  
F=120Hz, Cout=22uF  
(Tantalum),(VIN-VOUT)=3V,  
IOUT=1A  
％Vo  
RA  
Ripple Rejection Ratio  
--  
35  
--  
dB  
Notes:1. Low duty cycle pulse testing with which TJ remains unchanged.  
2. ∆VOUT, ∆VREF = 1%.  
ShenZhen CYT IC Design CO ,Ltd  
3
CYT 8117  
Absolute Maximum Rating  
Parameter  
Symbol  
Value  
Units  
Input Supply Voltage  
VIN  
9
V
Thermal Resistance,  
ӨJA  
60  
℃/W  
Junction-to-Ambient SOT-223  
Lead Temperature (Soldering,10 sec.)  
Operating Junction Temperature Range  
Storage Temperature Range  
TLEAD  
TJ  
260  
℃
℃
℃
0 to +125  
-40 to +150  
TSTG  
Application Hints  
Like any linear voltage regulator, CYT8117 requires external capacitors to ensure stability. The  
external capacitors must be carefully selected to ensure performance.  
Input Capacitor  
An input capacitor of at least 10µF is required. Ceramic or Tantalum can be used. The value can be  
increase without upper limit.  
Output Capacitor  
An output capacitor is required for stability. It must be placed no more than 1 cm away from the  
VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 22µF but may  
be increase without limit.  
Thermal Considerations  
It is important that the thermal limit of the package is not exceeded. The CYT8117 has built-in  
thermal protection. When the thermal limit is exceeded, the IC will enter protection, and VOUT will be  
pulled to ground. The power dissipation for a given application can be calculated as following: The power  
dissipation (PD) is  
PD = IOUT * [VIN – VOUT]  
The thermal limit of the package is then limited to PD(MAX) = [TJ – TA]/ΘJA where TJ is the  
junction temperature, TA is the ambient temperature, and ΘJA is around 60°C/W for CYT8117.CYT8117  
is designed to enter thermal protection at 175°C. For example, if TA is 25°C then the maximum PD is  
limited to about 2.5W. In other words, if IOUT(MAX) = 1A, then [VIN – VOUT] cannot exceed 2.5V.  
ShenZhen CYT IC Design CO ,Ltd  
4
CYT 8117  
Typical Performance Characteristics  
ShenZhen CYT IC Design CO ,Ltd  
5
CYT 8117  
Outline Drawing for SOT-223  
DIMENSIONS  
INCHES  
MM  
DIMN  
MIN  
MAX  
0.071  
0.033  
--  
MIN  
--  
MAX  
1.80  
0.840  
--  
--  
A
B
C
D
d
E
e
L
0.025  
0.012  
0.248  
0.115  
--  
0.640  
0.31  
6.30  
2.95  
--  
0.264  
0.124  
0.090  
0.041  
0.287  
0.148  
--  
6.71  
3.15  
2.29  
1.04  
7.29  
3.71  
--  
0.033  
0.264  
0.130  
0.012  
0.010  
0.840  
6.71  
3.30  
0.310  
0.250  
L1  
L2  
K
0.014  
0.360  
ShenZhen CYT IC Design CO ,Ltd  
6

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