SS8044
3.3V 600mA Low Dropout Regulator
FEATURES
Dropout voltage typically 0.65V @ I
O
= 600mA.
Output current in excess of 600mA.
Output voltage accuracy +%.
Quiescent current, typically 0.3mA.
Internal short circuit current limit.
Internal over temperature protection.
GENERAL DESCRIPTION
The SS8044 positive 3.3V voltage regulator features the ability
to source 600mA of output current with a dropout voltage of
typically 0.65V. A low quiescent current is provided. The typical
quiescent current is 0.3mA.
Familiar regulator features such as over temperature and over
current protection circuits are provided to prevent it from being
damaged by abnormal operating conditions.
Pb-free; RoHS-compliant
TYPICAL APPLICATIONS
SS8044
12/31/2006 Rev. 1.01
www.SiliconStandard.com
1
SS8044
MAXIMUM RATINGS
(
T
A
=25℃ unless otherwise specified)
Input Voltage………………………………..…….…….7V
Power Dissipation Internally Limited
(Note2)
Maximum Junction Temperature…………………150°C
Storage Temperature Range..……-65°C
T
J
+150°C
Reflow Temperature (soldering, 10sec)............260°C
Thermal Resistance Junction to Ambient, (θ
JA
)
SOT-223………………………….…………..…147°C/W
Thermal Resistance Junction to Case, (θ
Jc
)
SOT-223……………………………….…………27°C/W
OPERATING CONDITIONS
Input Voltage………….…….…..……..….……4V ~ 6.5V
Temperature Range…………………..-40°C
T
A
85°C
ELECTRICAL CHARACTERISTICS
V
IN
=5V, I
O
= 600mA, C
IN
=10µF, C
OUT
=10µF. All specifications apply for T
A
= T
J
= 25°C.[Note 3]
PARAMETER
Output Voltage
Line Regulation
CONDITION
MIN
3.234
---
---
---
---
---
---
---
---
---
---
TYP
3.3
15
20
10
0.3
47
0.65
0.25
600
0.65
0.8
145
MAX
UNIT
10mA < I
O
<600mA
4V < V
IN
< 6V, I
O
= 10mA
10mA < I
O
< 600mA
Load Regulation
10mA < I
O
< 250mA
Quiescent Current VIN = 5V
Ripple Rejection fi = 120 Hz, 1
VP-P
, Io = 100mA
IO = 600mA
Dropout Voltage
IO = 250mA
Output Current
Short Circuit
Current Limit
Over Temperature
NOTE:
3.366 V
---
mV
---
mV
---
---
mA
---
dB
---
V
---
---
mA
---
A
A
---
°C
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 guaranteed specifications and test conditions see the Electrical Characteristics.
2. The maximum power dissipation is a function of the maximum junction temperature, T
Jmax
; total
thermal resistance, J
A
, and ambient temperature T
A
. The maximum allowable power dissipation at
any ambient temperature is T
jmax
-T
A
/ J
A
. If this dissipation is exceeded, the die temperature will
rise above 150°C and IC go into thermal shutdown. The J
A
of SOT-223 package is 147°C/W (See
Recommended Minimum Footprint).
3. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient
as possible.
4.
The type of output capacitor should be tantalum or aluminum.
12/31/2006 Rev. 1.01
www.SiliconStandard.com
2
SS8044
DEFINITIONS
Dropout Voltage
The input/output Voltage differential at which the regulator output no longer maintains regulation against further
reductions in input voltage. Measured when the output drops 100mV below its nominal value, dropout voltage is
affected by junction temperature, load current 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 average chip temperature is not significantly affected.
Load Regulation
The change in output voltage for a change in load current at constant chip temperature. The measurement is
made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not
significantly affected.
Maximum Power Dissipation
The maximum total device dissipation for 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.
RATINGS AND CHARACTERISTIC CURVES
A
(V
IN
= +5V , C
IN
= 10µF, C
OUT
= 10µF, T
A
= 25°C , unless otherwise specified.)
12/31/2006 Rev. 1.01
www.SiliconStandard.com
3
SS8044
RATINGS AND CHARACTERISTIC CURVES
A
(VIN = +5V , CIN = 10µF, COUT = 10µF, TA = 25°C , unless otherwise specified.)
12/31/2006 Rev. 1.01
www.SiliconStandard.com
4
SS8044
MINIMUM FOOTPRINT
ORODER INFORMATION
SSXXXX(G) XX X X
Packing Type
Pin Option
Package Type
Green Product
Part Number
PACKAGE TYPE
T6: SOT223
PIN OPTION
1
2
1 : V
OUT
GND
VI
N
2 : V
OUT
3 : GND
V
OUT
4 : GND
V
IN
5 : V
IN
GND
6 : V
IN
V
OUT
3
V
IN
GND
V
IN
V
OUT
V
OUT
GND
PACKING
U & D : Tape & Reel
T : Tube
B : Bag
Disclaimer
Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard
Corporation makes no guarantee or warranty, expressed or implied, as to the reliability, accuracy, timeliness or
completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other
intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes
as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability,
functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described
herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard
Corporation or any third parties.
12/31/2006 Rev. 1.01
www.SiliconStandard.com
5
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