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EZ1117CST-25.TR [SEMTECH]

Fixed Positive LDO Regulator, 2.5V, 1.2V Dropout, PDSO4, TO-261AA, SOT-223, 4 PIN;
EZ1117CST-25.TR
型号： EZ1117CST-25.TR
厂家： SEMTECH CORPORATION    SEMTECH CORPORATION
描述：

Fixed Positive LDO Regulator, 2.5V, 1.2V Dropout, PDSO4, TO-261AA, SOT-223, 4 PIN

光电二极管 输出元件 调节器
文件： 总6页 (文件大小：472K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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EZ1117/EZ1117A  
0.8 & 1.0 AMP Positive  
Voltage Regulators  
POWER MANAGEMENT  
Deessccrriippttiioonn  
Featturreess  
The EZ1117 series of high performance positive voltage  
regulators are designed for use in applications requiring  
low dropout performance at full rated current.  
ꢀ Low dropout performance,  
1.2V max. for EZ1117  
1.3V max. for EZ1117A  
ꢀ Full current rating over line and temperature  
ꢀ Fast transient Response  
ꢀ ±2% total output regulation over line, load and  
temperature  
ꢀ Adjust pin current max 90μA over temperature  
ꢀ Fixed/adjustable output voltage  
ꢀ Line regulation 0.2% max.  
ꢀ Load regulation 0.4% max.  
ꢀ SOT-223 and TO-263 packages  
Additionally, the EZ1117 series provides excellent  
regulation over variations in line, load and temperature.  
Outstanding features include low dropout performance  
at rated current, fast transient response, internal current  
limiting and thermal shutdown protection of the output  
device. The EZ1117 series of three terminal regulators  
offer fixed and adjustable voltage options available in  
the space saving SOT-223 and TO-263 packages.  
Appplliiccaattiioonnss  
Typiccaall AApppplliiccaattiioonn CCiirrccuuiittss  
ꢀ Active SCSI termination  
ꢀ Low voltage microcontrollers  
ꢀ Switching power supply post-regulator  
Adjustable Voltage Regulator(1)(2)  
3.45V  
VOUT  
2/TAB  
VOUT  
= 4.75V  
≥
3
R1  
133  
1%  
EZ1117  
1
V
REF  
+
C2  
Orderriinngg IInnffoorrmmaattiioonn  
+
R2  
232  
1%  
C1  
10μF  
I
ADJ  
Device(1,2)  
Package  
VOUT Volts  
10μF  
TANT  
EZ1117CST-X.X  
EZ1117ACST-X.X  
SOT-223  
See Note (1)  
VOUT = VREF 1 + R2 + IADJR2  
(
)
R1  
EZ1117CM-X.X  
EZ1117ACM-X.X  
(1) C1 Needed if device is far from filter capacitors  
(2) C2 Required for Stability  
TO-263  
See Note (1)  
Notes:  
Fixed Voltage Regulator(1)(2)  
(1) Where X.X denotes voltage options. Available voltages are:  
2.5V, 2.85V and 3.3V. Leave blank for adjustable version (1.3 to  
5.7V). Contact factory for additional voltage options.  
(2) Add suffix ‘TR’ for tape and reel.  
3.3V  
VOU  
2/TAB  
≥
= η4.75V  
VOUT  
3
EZ1117-3.3  
1
+
+
C2  
10μF  
TANT  
C1  
10μF  
I
Q
(1) C1 Needed if device is far from filter capacitors  
(2) C2 Required for Stability  
Active SCSI Bus Terminator  
OUT  
IN  
EZ1117  
GND  
+
10μF  
+
22μF  
18 to 27  
Lines  
May 23, 2006  
1
www.semtech.com  
EZ1117/EZ1117A  
Abssoolluuttee MMaaxxiimmuumm RRaattiinnggss  
Parameter  
Symbol  
VIN  
Max  
Units  
V
Input Supply Voltage  
7
Power Dissipation  
PD  
Internally Limited  
W
Thermal Resistance Junction to Case SOT-223  
15  
3
θJC  
°C/W  
°C/W  
TO-263  
Thermal Resistance Junction to Ambient SOT-223  
TO-263  
156  
60  
θJA  
Operating Junction Temperature Range  
Storage Temperature Range  
TJ  
0 to 125  
-65 to 150  
260  
°C  
°C  
°C  
TSTG  
TLEAD  
Lead Temperature (Soldering) 10 Sec  
(6))  
Eleeccttrriiccaall CChhaarraacctteerriissttiiccss  
Adj. Option: VIN = 2.65V to 7.0V and Adj IO = 10mA to IRATED  
Fixed Options: IO = 0mA to IRATED  
Fixed 2.5V: VIN = 3.9V to 7.0V  
Fixed 2.85V: VIN = 4.25V to 7.0V  
Fixed 3.3V: VIN = 4.75V to 7.0V  
Test Conditions  
IO  
Test Limits  
Parameter  
Symbol  
VIN  
TJ(5)  
25°C  
Min  
Typ  
VO  
Max  
1.01|VOl  
1.02|VOl  
1.262  
1.270  
0.2  
Units  
Output Voltage(1)  
5V  
0mA  
10mA  
10mA  
0.99|VOl  
0.98|VOl  
1.238  
VD  
V
(Fixed Voltage Versions)  
Reference Voltage(1)  
(Adj Voltage Version)  
Line Regulation(1)  
Load Regulation(1)  
O.T.  
25°C  
O.T.  
O.T.  
O.T.  
VO  
5V  
5V  
1.250  
1.250  
0.035  
0.2  
VREF  
V
1.225  
REG(LINE)  
REG(LOAD)  
%
%
0.4  
100mA  
500mA  
800mA  
1,000mA  
1.00  
1.05  
1.10  
1.10  
1.10  
Dropout Voltage(2)  
1.15  
VD  
O.T.  
O.T.  
V
A
1.20  
EZ1117A  
1.30  
Current Limit  
EZ1117  
ICL  
0.8  
1.0  
EZ1117A  
© 2006 Semtech Corp.  
www.semtech.com  
2
EZ1117/EZ1117A  
Eleeccttrriiccaall CChhaarraacctteerriissttiiccss ((CCoonntt..))  
Test Conditions  
IO  
Test Limits  
Parameter  
Symbol  
VIN  
TJ(5)  
Min  
Typ  
Max  
Units  
Quiescent Current  
Fixed Voltage Version  
IQ  
5V  
O.T.  
10  
13  
mA  
Temperature Coefficient  
Adjust Pin Current  
TC  
IADJ  
∆IADJ  
TS  
O.T.  
O.T.  
O.T.  
O.T.  
0.005  
55  
%/°C  
μA  
90  
5
Adjust Pin Current Change  
Temperature Stability  
0.2  
μA  
0.5  
%
Minimum Load Current  
Adj Voltage Version  
IO  
5V  
5V  
O.T.  
5
10  
mA  
RMS Output Noise(3)  
VN  
RA  
25°C  
O.T.  
0.003  
72  
%VO  
dB  
Ripple Rejection Ratio(4)  
60  
NOTES:  
(1) Low duty cycle pulse testing with Kelvin connections required.  
(2) ∆VOUT, ∆ VREF = 1%.  
(3) Bandwidth of 10Hz to 10kHz.  
(4) 120Hz input ripple (CADJ for ADJ = 25μF).  
(5) O.T. = over specified operating junction temperature range.  
(6) IRATED = 1A for EZ1117A and 800mA for EZ1117.  
Pinn CCoonnfifigguurraattiioonnss  
Bloocckk DDiiaaggrraamm  
Input  
S.O.A  
EZ1117  
EZ1117A  
PIN FUNCTION  
Current  
Limit  
Limiting  
Amplifier  
1
2
3
ADJ/GND  
OUTPUT  
INPUT  
Output  
Sense  
Thermal Overload  
TAB IS OUTPUT  
SOT-223  
TO-263  
Voltage  
Regulation  
Amplifier  
VREF  
ADJ/COM  
© 2006 Semtech Corp.  
www.semtech.com  
3
EZ1117/EZ1117A  
Outlinnee DDrraawwiinngg -- SSOOTT--222233  
Laanndd PPaatttteerrnn -- SSOOTT-22233  
© 2006 Semtech Corp.  
www.semtech.com  
4
EZ1117/EZ1117A  
Outlinnee DDrraawwiinngg -- TTOO--226633  
Laanndd PPaatttteerrnn -- TTOO-26633  
© 2006 Semtech Corp.  
www.semtech.com  
5
EZ1117/EZ1117A  
Contact Information  
Semtech Corporation  
Power Management Products Division  
200 Flynn Road, Camarillo, CA 93012  
Phone: (805) 498-2111 Fax: (805) 498-3804  
www.semtech.com  
© 2006 Semtech Corp.  
www.semtech.com  
6

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