SS8026
1.8V 1A Positive Voltage Regulator
Features
Output current in excess of 1A
Output voltage accuracy +2.5%/-2%
Quiescent current typically 480µA
Internal short-circuit current-limit
Internal over-temperature protection
General Description
The SS8026 positive 1.8V voltage regulator features
the ability to source 1A of output current. The typical
quiescent current is 0.48mA.
Familiar regulator features such as over-temperature
and over-current protection circuits are provided to
prevent it from being damaged by abnormal operating
conditions.
Applications
PC motherboard
ADSL/Cable Modem
Set -Top Box
LAN switch/Hub
Broadband/Router
Ordering Information
SS8026XXXXX
Packing Type
Pin Option
Package Type
PACKAGE TYPE
T2 : SOT-89
T3 : TO 220
T4 : TO 252
T5 : TO-263
T6 : SOT-223
PIN OPTION
1
1 : V
OUT
2 : V
OUT
3 : GND
4 : GND
5 : V
IN
6 : V
IN
2
GND
V
IN
V
OUT
V
IN
GND
V
OUT
3
V
IN
GND
V
IN
V
OUT
V
OUT
GND
PACKING
TR : Tape & Reel
TB : Tubes
Typical Application
[Note 4] : Type of C
OUT
I
O
V
IN
C1
1µ F
Pin Configuration
SS8026
IQ
V
OUT
C
OUT
10µF
Top View
Top View
Top View
1
2
3
1
2
3
1
2
3
TO-220
TO-252 and TO-263
SOT-223 and SOT-89
Rev.2.02 12/06/2003
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SS8026
Absolute Maximum Ratings
(Note 1)
Input Voltage………………...................................................................……………………..…..…7V
Power Dissipation Internally Limited…....................................................................
(Note 2)
Maximum Junction Temperature….......................................................……………............…..150°C
Storage Temperature Rang…........................................................................................-65°C
≤
T
J
≤+150°C
Lead Temperature, Time for Wave Soldering
SOT 223 Package……………….…….......................................................................………..260°C, 4s
Continuous Power Dissipation (T
A
= +25°C)
SOT 89
(1)
……………………......................................................................………………..….…0.5W
SOT 223
(1)
……………...................................................................………...……………….…....0.8W
TO 252
(1) ……………………….................................................................................................................………………………………………………….
1.0W
Note
(1)
: See Recommended Minimum Footprint
Operating Conditions
(Note 1)
Input Voltage……………………........................................................................……………..2.7V~6.5V
Temperature Range…………..........................................................................................…0°C
≤
T
J
≤125°C
Electrical Characteristics
V
IN
=3.3V, I
O
= 1A, C
IN
= 1µF, C
OUT
=10µF, All specifications apply for T
A
= T
J
= 25°C. [Note 3]
PARAMETER
CONDITIONS
MIN
TYP
MAX
Output Voltage
Line Regulation
Load Regulation
Output Impedance
Quiescent Current
Ripple Rejection
Dropout Voltage
10mA < I
O
< 1A
3V < V
IN
< 6.5V, I
O
= 10mA
10mA < I
O
< 1A
200mA DC and 100mA AC, fo = 120Hz
V
IN
= 3.3V
f
i
= 120Hz,V
ripple
=1V
P-P
, Io = 100mA
I
O
= 0A
I
O
= 100mA
I
O
= 500mA
I
O
= 1A
V
IN
= 3V(SOT 223)
Output Current
Continuous Test,
T
A
= 25°C, T
J
150°C,
V
OUT
within
±2%
V
IN
= 3.3V(SOT 223)
V
IN
= 3.3V(SOT 89)
Short Circuit Current
Over Temperature
Minimum footprint
(0.0625 square inch)
Mounted on 0.53
square inch pcb area
Mounted on 0.16
square inch pcb area
1.764
1.800
3
30
80
480
53
880
895
950
1160
660
1
0.5
1.6
150
1.845
30
50
UNITS
V
mV
mV
mΩ
µA
dB
mV
mA
A
A
A
°C
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions
are conditions under which the device functions but the specifications might not be guaranteed. For guaran-
teed specifications and test conditions see the Electrical Characteristics.
Note 2:
The maximum power dissipation is a function of the maximum junction temperature, T
Jmax ,
total thermal re-
sistance,
θ
JA
, and ambient temperature T
A
. The maximum allowable power dissipation at any ambient te m-
perature is T
jmax
-T
A
/
θ
JA
. If this dissipation is exceeded, tthe die temperature will rise above 150°C and the IC will
go into thermal shutdown. For the SS8026 in SOT 89 package,
θ
JA
is 250°C/W. For the SS8026 in SOT 223
package,
θ
JA
is 156°C/W; in TO 252 package,
θ
JA
is 125°C/W. (See recommend minimum footprint). The safe
operation in SOT 89, SOT 223, TO 252 package, can be seen in “Typical Performance Characteristics” (Safe
Operating Area).
Note3:
Low duty pulse techniques are used during test to maintain junction temperatures as close to ambient as
possible.
Note4:
The output capacitor should be a tantalum or aluminum type.
Rev.2.02 12/06/2003
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SS8026
Definitions
Dropout Voltage
The input/output voltage differential at which the regu-
lator output no longer maintains regulation against fur-
ther reductions in input voltage. Measured when the
output drops 100mV below its nominal value. Dropout
voltage is affected by junction temperature, load cur-
rent and minimum input supply requirements.
Line Regulation
The change in output voltage for a change in input volt-
age. The measurement is made under conditions of
low dissipation or by using pulse techniques such that
the average chip temperature is not significantly affected.
Load Regulation
The change in output voltage for a change in load cur-
rent at constant chip temperature. The measurement is
made under conditions of low dissipation or by using
pulse techniques such that the average chip temperature
is not significantly affected.
Maximum Power Dissipation
The maximum total device dissipation under which the
regulator will operate within specifications.
Quiescent Bias Current
Current which is used to operate the regulator chip and
is not delivered to the load.
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Analog electronics
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