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EZ1584IT-3.3T

型号：

EZ1584IT-3.3T

品牌：

SEMTECH[ SEMTECH CORPORATION ]

页数：

5 页

PDF大小：

161 K

下载PDF手册
EZ1584C & EZ1584I  
7.0 Amp Low Dropout  
Positive Voltage Regulators  
POWER MANAGEMENT  
Description  
Features  
The EZ1584 is a high performance positive voltage  
regulator designed for use in applications requiring low  
dropout performance at 7A. Additionally, the EZ1584  
series provides excellent regulation over variations in line,  
load and temperature.  
‹ Low dropout performance: 1.3V max. for EZ1584C  
and 1.4V max. for EZ1584I  
‹ 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 typically 0.015%  
‹ Load regulation typically 0.05%  
‹ Industrial temperature range (EZ1584I)  
‹ TO-220 package  
Outstanding features include low dropout performance  
at rated current, fast transient response, internal  
current limiting and thermal shutdown protection of the  
output device.  
The EZ1584 is an excellent choice for powering  
microprocessor systems. Using an LDO eliminates  
MOSFETs and inductors, saving both space and cost. An  
LDO also provides better transient response and no  
ripple.  
Applications  
‹ Memory supply  
‹ Graphics core supply  
A variety of options are available for maximum flexibility:  
the EZ1584C is intended for commercial applications and  
has both fixed and adjustable voltage options; the  
EZ1584I is intended for industrial applications and has  
a 3.3V fixed and an adjustable option. All devices are  
available in the popular TO-220 package.  
‹ Other 2.5V to 3.6V microprocessor supplies  
‹ Low voltage logic supplies  
‹ Battery-powered circuitry  
‹ Post regulator for switching supply  
‹ Telecom supplies  
‹ Industrial supplies  
Typical Application Circuit  
Fixed Voltage Regulator  
U1  
EZ1584-3.3  
3
2
TAB  
VIN > 4.75V  
VOUT = 3.3V  
IN  
OUT  
+
+
C1  
10uF Tant.  
C2  
GND  
1
10uF Tant. Min.  
Adjustable Voltage Regulator  
U1  
EZ1584  
OUT  
3
2
TAB  
VIN > 4.75V  
VOUT = 3.3V  
IN  
+
+
C1  
R1  
C2  
10uF Tant.  
ADJ  
1
124 Ohm, 1%  
10uF Tant. Min  
R2  
205 Ohm, 1%  
R2  
R1  
VOUT = VREF • 1+  
+ I  
• R2  
Notes:  
ADJ  
(1) C1 needed if device is far from filter capacitors  
(2) C2 minimum value required for stability  
June 23, 2010  
1
www.semtech.com  
EZ1584C & EZ1584I  
POWER MANAGEMENT  
Absolute Maximum Ratings  
Parameter  
Symbol  
Maximum  
Units  
Input Supply Voltage  
VIN  
PD  
θJC  
θJA  
7
V
Power Dissipation  
Internally Limited  
W
Thermal Resistance Junction to Case  
Thermal Resistance Junction to Ambient  
2
°C/W  
°C/W  
50  
Operating Ambient Temperature Range  
EZ1584C  
EZ1584I  
TA  
TJ  
0 to 70  
°C  
°C  
-40 to 85  
Operating Junction Temperature Range  
EZ1584C  
EZ1584I  
0 to 125  
-40 to 125  
Storage Temperature Range  
TSTG  
TLEAD  
ESD  
-65 to 150  
°C  
°C  
kV  
Lead Temperature (Soldering) 10 Sec.  
ESD Rating (Human Body Model)  
300  
2
Electrical Characteristics  
Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 7.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.0A.  
Values in bold apply over full operating ambient temperature range.  
Parameter  
Symbol  
VIN  
IO  
Min  
Typ  
Max  
1.01lVOl  
1.02lVOl  
1.262  
1.275  
0.2  
Units  
Output Voltage (1)  
VO  
5V  
0mA  
0.99lVOl  
0.98lVOl  
1.238  
VO  
V
EZ1584C-X.X, EZ1584I-3.3  
Reference Voltage (1)  
EZ1584C, EZ1584I  
Line Regulation (1)  
Load Regulation (1)  
VREF  
5V  
5V  
10mA  
10mA  
1.250  
V
1.225  
REG(LINE)  
REG(LOAD)  
0.015  
0.05  
%
%
0.4  
Dropout Voltage(1)(2)  
EZ1584C, EZ1584C-X.X  
VD  
ICL  
7A  
1.20  
1.20  
9.0  
1.30  
1.40  
V
A
EZ1584I, EZ1584I-3.3  
Current Limit  
7.1  
2001 Semtech Corp.  
2
www.semtech.com  
EZ1584C & EZ1584I  
POWER MANAGEMENT  
Electrical Characteristics (Cont.)  
Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 7.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.0A.  
Values in bold apply over full operating ambient temperature range.  
Parameter  
Symbol  
VIN  
IO  
Min  
Typ  
Max  
13  
Units  
Quiescent Current  
IQ  
5V  
10  
mA  
Fixed Voltage Versions  
Temperature Coefficient  
Adjust Pin Current  
TC  
IADJ  
∆IADJ  
TS  
0.005  
55  
%/°C  
µA  
90  
5
Adjust Pin Current Change  
Temperature Stability  
0.2  
0.5  
5
µA  
5V  
5V  
0.5A  
7A  
%
Minimum Load Current  
Adj Voltage Versions  
RMS Output Noise(3)  
IO  
10  
mA  
VN  
RA  
0.003  
72  
%VO  
dB  
Ripple Rejection Ratio(4)  
5V  
60  
NOTES:  
(1) Low duty cycle pulse testing with Kelvin connections required.  
(2) ∆VOUT, ∆VREF = 1%  
(3) Bandwidth of 10 Hz to 10 kHz.  
(4) 120 Hz input ripple (CADJ for ADJ = 25µF).  
2001 Semtech Corp.  
3
www.semtech.com  
EZ1584C & EZ1584I  
POWER MANAGEMENT  
Pin Configuration  
Ordering Information  
Device(1)(2)  
Package  
EZ1584CT-X.X  
EZ1584IT-X.X  
TO-220(3)(4)  
Notes:  
(1) Where X.X denotes voltage options. Available voltages  
are: 1.5V, 2.5V and 3.3V for EZ1584C and 3.3V only for  
EZ1584I. Leave blank for adjustable version (1.3V to  
5.7V). Contact factory for additional voltage options.  
(2) Where C and I denote Commercial (0°C to 70°C)  
and Industrial (-40°C to 85°C) ambient temperature  
ranges.  
(3) Only available in tube packaging. A tube contains 50  
devices.  
(4) Halogen Free, and RoHS/WEEE compliant.  
Pin Descriptions  
Pin  
Pin Name Pin Function  
1
ADJUST  
This pin is the negative side of the reference voltage for adjustable devices. Transient response  
can be improved by adding a small bypass capacitor from the adjust pin to ground.  
GROUND  
This pin is the bottom end of the internal resistor feedback chain for fixed output voltage parts, and  
should be connected to ground.  
2
3
OUTPUT  
INPUT  
This is the power output of the device and is electrically connected to the TAB.  
This is the input supply pin for both the control circuitry and the pass device.  
Block Diagram  
2001 Semtech Corp.  
4
www.semtech.com  
EZ1584C & EZ1584I  
POWER MANAGEMENT  
Outline Drawing - TO-220  
D IM E N S IO N S  
Ø P  
A
IN C H E S  
M ILL IM E T E R S  
a a a  
B
D IM  
M IN N O M M A X M IN N O M M A X  
-
-
-
-
-
-
A
A 1  
A 2  
b
.14 0  
.02 0  
.08 0  
.01 5  
.04 5  
.01 4  
.56 0  
.33 0  
.48 0  
.38 0  
.27 0  
-
.1 9 0  
.0 5 5  
.1 1 5  
.0 4 0  
.0 7 0  
.0 2 4  
.6 5 0 1 4 .2 2  
.3 5 5 8 .38  
.5 0 7 1 2 .1 9  
3 .56  
0 .51  
2 .03  
0 .38  
1 .14  
0 .36  
4.8 2  
1.4 0  
2.9 2  
1.0 2  
1.7 8  
0.6 1  
1 6.5 1  
9.0 2  
1 2.8 8  
1 0.6 6  
8.9 0  
0.7 6  
B
S E A T IN G  
P L A N E  
A
E
.0 27  
0.6 9  
1.4 5  
-
b 2  
.0 57  
E 2  
A
c
-
-
E /2  
A 1  
-
D
D 1  
D 2  
E
-
-
-
Q
-
-
-
-
H 1  
-
-
-
.4 2 0  
.3 5 0  
.0 3 0  
9 .65  
6 .86  
-
D 2  
E 1  
E 2  
e
D
.10 0 B S C  
.20 0 B S C  
-
2 .5 4 B S C  
D 1  
L 1  
e 1  
H 1  
L
5 .0 8 B S C  
-
-
-
.23 0  
.50 0  
-
.2 7 0  
5 .84  
6.8 6  
1 4.7 3  
6.3 5  
-
.5 8 0 1 2 .7 0  
-
-
L 1  
N
.2 5 0  
C
3
-
3
-
Ø P  
Q
.13 9  
.10 0  
.1 5 6  
.1 2 0  
3 .53  
2 .54  
3.9 6  
3.0 5  
L
-
-
a a a  
.0 14  
.0 15  
.0 10  
0.3 6  
0.3 8  
0.2 5  
b b b  
c cc  
c
3 x b 2  
E 1  
ccc  
A 2  
3 x b  
B
A
b b b  
B
A
e
2 x  
e 1  
N O T E S :  
1 . C O N T R O L L IN G D IM E N S IO N S A R E IN IN C H E S .  
2 . D IM E N S IO N S "D " A N D "E " D O N O T IN C L U D E M O L D F L A S H , P R O T R U S IO N S  
O R G A T E B U R R S .  
Contact Information  
Semtech Corporation  
Power Management Products Division  
652 Mitchell Rd., Newbury Park, CA 91320  
Phone: (805)498-2111 FAX (805)498-3804  
2001 Semtech Corp.  
5
www.semtech.com  
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