Description
The SE8119C series of high performance low
dropout
voltage
regulators
are
designed
for
applications that require efficient conversion and
fast transient response.
Features
Low Dropout Performance.
Guaranteed 800mA Output Current.
Wide Input Supply Voltage Range.
Over-temperature and Over-current
Protection.
Rugged 3KV ESD withstand capability.
Available in SOT-89-3L and SOT-223-3L
Top view
Pin Configuration
Packages.
Application
PC-Camera
1
2
3
Active SCSI Terminators.
High Efficiency Linear Regulators.
5V to 3.3V Linear Regulators
Motherboard Clock Supplies.
SOT-89
Typical Application
Adjustable Voltage Regulator
VIN>=3V
Ordering Information
SE8119C _ _ _
PIN (1=>3): 1. G: OUT/GND/IN
COUT
22uF
P3
SE8119C-ADJ
P1
P2
VOUT=1.5V
R1
124Ω
R2
24.9Ω
VREF
CIN
10uF
IADJ
2. N: GND/IN/OUT
3. T: GND/OUT/IN
Package Type: 1. K: SOT-89-3L
2. S: SOT-223-3L
V
OUT
=V
REF
(1+
R
2
R
1
)+I
ADJ
R
2
Output Voltage: A: V
OUT
= 3.3V
ADJ: Adjustable Output
Fixed Voltage Regulator
VIN>=4.8V
P3
SE8119C-3.3V
P1
IO
P2
VOUT=3.3V
CIN
10uF
COUT
22uF
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1
Absolute Maximum Rating
Symbol
V
IN
T
J
T
STG
T
LEAD
Input Supply Voltage
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 Sec)
Parameter
Maximum
9
0 to 125
-40 to 150
260
Units
V
°C
°C
°C
Electrical Characteristic
V
IN,MAX
≤
8V, V
IN,MIN
– V
OUT
= 1.5V, I
OUT
= 10mA, C
IN
= 10µF, C
OUT
= 22µF, T
J
= 0 – 125°C, unless otherwise specified.
Symbol
V
O
V
REF
V
SR
V
LR
I
Q
I
ADJ
∆I
ADJ
V
D
I
O
VI
CL
T
C
OTP
V
N
R
A
Parameter
Output Voltage
(1)
Reference Voltage
(1)
(Adj. Voltage Version)
Line Regulation
(1)
Load Regulation
(1)
Quiescent Current
Adjust Pin Current
Adjust Pin Current
Change
Dropout Voltage
(2)
Minimum Load Current
Current Limit
Temperature Coefficient
Thermal Protection
RMS Output Noise
Ripple Rejection Ratio
Test Condition
SE8119-3.3
(V
IN
- V
OUT
) = 1.5V
I
OUT
= 10mA
V
OUT
+ 1.5V < V
IN
< 8V
I
OUT
= 10mA
(V
IN
- V
OUT
) = 1.5V
10mA
≤
I
OUT
≤
800mA
Min
3.234
(-2%)
--
--
--
--
Typ
3.3
Max
3.366
Units
V
V
%
%
mA
μA
μA
V
mA
A
%/°C
°C
%V
O
dB
1.250 (+2%)
0.3
0.4
3
65
14
1.3
4
1.0
0.07
175
0.003
35
--
--
--
--
--
--
--
--
--
--
--
--
V
OUT
+ 1.5V < V
IN
< 8V
10mA
≤
I
OUT
≤
1A
I
OUT
= 800mA
--
--
--
--
--
--
T
A
= 25°C, 10Hz
≤
f
≤
10kHz
f = 120Hz,
C
OUT
= 22μF (Tantalum),
(V
IN
- V
OUT
) = 3V, I
OUT
= 50mA
--
--
Notes:
1.
2.
Low duty cycle pulse testing with which T
J
remains unchanged.
∆V
OUT
= 1%.
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 2
Application Hints
Like any linear voltage regulator, SE8119C
requires external capacitors to ensure stability.
The
external
capacitors
must
be
carefully
selected to ensure performance.
Thermal Considerations
It is important that the thermal limit of the package
is not exceeded.
thermal protection.
The SE8119C has built-in
When the thermal limit is
exceeded, the IC will enter protection, and V
OUT
will be pulled to ground. The power dissipation
for a given application can be calculated as
following:
The power dissipation (P
D
) is
P
D
= I
OUT
* [V
IN
– V
OUT
]
It
The thermal limit of the package is then limited to
P
D(MAX)
= [T
J
– T
A
]/Θ
JA
where T
J
is the junction
temperature, TA is the ambient temperature, and
Θ
JA
is around 150°C/W for SE8119C. SE8119C
is designed to enter thermal protection at 175°C.
For example, if T
A
is 25°C then the maximum P
D
is limited to about 1.0W. In other words, if I
OUT
=
500mA, then [V
IN
– V
OUT
] can not exceed 2V.
Input Capacitor
An input capacitor of at least 10μF is required.
Ceramic or Tantalum can be used.
can be increased without upper limit.
The value
Output Capacitor
An output capacitor is required for stability.
must be placed no more than 1 cm away from the
V
OUT
pin, and connected directly between V
OUT
and GND pins. The minimum value is 22μF but
may be increased without limit.
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3
Output Voltage VS. Junction Temperature
3.40
Dropout Voltage VS. Output Current
1.30
Dropout Voltage (V)
1.25
1.20
1.15
1.10
1.05
1.00
-25
0
25
50
75
100
125
150
3.35
Output Voltage
3.30
3.25
3.20
3.15
3.10
Junction Temperature (C)
0
200
400
Output Current (mA)
600
800
Line Transients
V
IN
= 4.5V – 5.5 V
Load Transients
I
LOAD
= 10mA – 0.5A
C
IN
= 0.1μF, C
OUT
=1μF
C
OUT
= 22μF, C
IN
= 10μF
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 4
Outline Drawing for SOT-89-3L
DIM
SOT-89
A
C
D
K
L
M
J
N
DIMENSIONS
INCHES
MM
MIN
MAX
MIN
MAX
0.173 0.181
0.159 0.167
0.067 0.075
0.051 0.059
0.094 0.102
0.035 0.047
0.118REF
0.059REF
0.016 0.020
0.055 0.063
0.014 0.016
10°TYP
0.028REF
4.400 4.600
4.050 4.250
1.700 1.900
1.300 1.500
2.400 2.600
0.890 1.200
3.00REF
1.50REF
0.400 0.520
1.400 1.600
0.350 0.410
10°TYP
0.70REF
H
G
I
A
B
C
D
E
F
G
H
I
J
K
L
M
B
Customer Support
Seaward Electronics Incorporated – China
Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road
Haidian District, Beijing 100085, China
Tel: 86-10-8289-5700/01/05
Fax: 86-10-8289-5706
Seaward Electronics Corporation – Taiwan
2F, #181, Sec. 3, Minquan East Rd,
Taipei, Taiwan R.O.C
Tel: 886-2-2712-0307
Fax: 886-2-2712-0191
Seaward Electronics Incorporated – North America
1512 Centre Pointe Dr.
Milpitas, CA95035, USA
Tel: 1-408-821-6600
Last Updated - 12/4/2008
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 5
F
E
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
