EZ1585C & EZ1585I
POWER MANAGEMENT
Description
The EZ1585 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 4.6A. Additionally, the
EZ1585 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.
4.6 Amp Positive
Voltage Regulator
Features
u
Low dropout voltage: 1.3V max. for EZ1585C and
u
u
u
1.4V max. for EZ1585I
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 (EZ1585C)
Line regulation typically 0.015%
Load regulation typically 0.05%
Industrial temperature range (EZ1585I)
TO-220 and TO-263 packages
u
u
u
u
A variety of options are available for maximum flexibility:
u
the EZ1585C is intended for commercial applications and
u
has both fixed and adjustable voltage options; the
EZ1585I is intended for industrial applications and is
adjustable only.
All devices are available in the popular TO-220 and
TO-263 packages.
Applications
u
u
u
u
u
u
u
Printer and plotter supplies
Instrumentation
Medical equipment
Microcontroller systems
Telecommunication systems
Motherboards
Switching supply post regulation
Typical Application Circuit
Fixed Voltage Regulator
U1
VIN > 4.75V
3
IN
EZ1585C-3.3
2
TAB
OUT
VOUT = 3.3V
+
C1
10uF Tant.
+
GND
1
C2
10uF Tant. Min.
Adjustable Voltage Regulator
U1
VIN > 4.75V
3
IN
TAB
EZ1585
OUT
2
VOUT = 3.45V
+
C1
10uF Tant.
ADJ
1
R1
133 Ohm, 1%
+
C2
10uF Tant. Min
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
R2
232 Ohm, 1%
R2
V
OUT
=
V
REF
•
1
+
+
I
ADJ
•
R 2
R1
Revision 1, January 2001
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EZ1585C & EZ1585I
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
Input Supply Voltage
Power D i ssi pati on
Thermal Resi stance Juncti on to C ase
TO-220
TO-263
Thermal Resi stance Juncti on to Ambi ent
TO-220
TO-263
Operati ng Ambi ent Temperature Range
EZ1585C
EZ1585I
Operati ng Juncti on Temperature Range
EZ1585C
EZ1585I
Storage Temperature Range
Lead Temperature (Solderi ng) 10 Sec.
ESD Rati ng (Human Body Model)
Sy mbol
V
IN
P
D
q
JC
Maximum
7
Internally Li mi ted
3
3
50
60
0 to 70
-40 to 85
0 to 125
-40 to 125
-65 to 150
300
2
U nits
V
W
°C /W
q
JA
°C /W
T
A
°C
T
J
T
STG
T
LEAD
ESD
°C
°C
°C
kV
Electrical Characteristics
Unless otherwise specified: Adj. V
IN
= 2.75V to 7.0V and Adj. I
O
= 10mA to 4.6A; Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 4.6A.
Values in
bold
apply over full operating ambient temperature range.
Parameter
Output Voltage
EZ1585C -X.X
Reference Voltage
(1)
(1)
Sy mbol
V
O
V
IN
5V
I
O
0mA
Min
0.99lV
O
l
0.98lV
O
l
Ty p
V
O
Max
1.01lV
O
l
1.02lV
O
l
U nits
V
V
REF
5V
10mA
1.238
1.225
1.250
1.262
1.275
V
EZ1585C , EZ1585I
Li ne Regulati on
(1)
Load Regulati on
(1)
D ropout Voltage
(1)(2)
EZ1585C , EZ1585C -X.X
EZ1585I
C urrent Li mi t
I
CL
REG
(LINE)
REG
(LOAD)
V
D
5V
4.6A
10mA
0.015
0.05
1.20
1.20
4.7
7.5
0.2
0.4
1.30
1.40
%
%
V
A
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EZ1585C & EZ1585I
POWER MANAGEMENT
Electrical Characteristics (Cont)
Unless otherwise specified: Adj. V
IN
= 2.75V to 7.0V and Adj. I
O
= 10mA to 4.6A; Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 4.6A.
Values in
bold
apply over full operating ambient temperature range.
Parameter
Qui escent C urrent
Fi xed Voltage Versi on
Temperature C oeffi ci ent
Adjust Pi n C urrent
Adjust Pi n C urrent C hange
Temperature Stabi li ty
Mi ni mum Load C urrent
Adj Voltage Versi ons
RMS Output Noi se
(3)
Ri pple Rejecti on Rati o
(4)
Sy mbol
I
Q
T
C
I
ADJ
DI
ADJ
T
S
I
O
V
N
R
A
V
IN
5V
I
O
Min
Ty p
10
0.005
55
0.2
Max
13
U nits
mA
%/°C
90
5
µA
µA
%
5V
5V
0.5A
0.5
5
0.003
10
mA
%V
O
dB
5V
4.6A
60
72
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2)
DV
OUT
,
DV
REF
= 1%
(3) Bandwidth of 10 Hz to 10 kHz.
(4) 120 Hz input ripple (C
ADJ
for ADJ = 25µF).
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EZ1585C & EZ1585I
POWER MANAGEMENT
Pin Configurations
Ordering Information
D ev ice
(1)(2)
EZ1585C M-X.X.TR
EZ1585IM.TR
EZ1585C T-X.X
EZ1585IT
P ackag e
TO-263
(3)
TO-220
(4)
Notes:
(1) Where X.X denotes voltage options (EZ1585C only).
Available voltages are: 1.5V, 2.5V, 3.3V and 3.45V. Leave
blank for adjustable version (1.3 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 tape and reel packaging. A reel
contains 800 devices.
(4) Only available in tube packaging. A tube contains 50
devices.
Pin Descriptions
Pin
1
Pin N ame
AD JUST
GROUND
2
3
OUTPUT
INPUT
Pin Function
Thi s pi n i s the negati ve si de of the reference voltage for adjustable devi ces. Transi ent response
can be i mproved by addi ng a small bypass capaci tor from the adjust pi n to ground.
Thi s pi n i s the bottom end of the i nternal resi stor feedback chai n for fi xed output voltage parts, and
should be connected to ground.
Thi s i s the power output of the devi ce and i s electri cally connected to the TAB.
Thi s i s the i nput supply pi n for both the control ci rcui try and the pass devi ce.
Block Diagram
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EZ1585C & EZ1585I
POWER MANAGEMENT
Outline Drawing - TO-220
Outline Drawing - T0-263
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