SEAWARD
ELECTRONICS
INC.
1A Positive Voltage
Regulators (Preliminary)
Features
Low Dropout Performance.
Guaranteed 1A Output Current.
SE8117
Description
The SE8117 series of high performance low dropout
voltage regulators are designed for applications that
require efficient conversion and fast transient
response.
Wide Input Supply Voltage Range.
Over-temperature and Over-current
Protection.
Fixed or Adjustable Output Voltage.
Rugged 3KV ESD withstand capability.
Available in SOT-223 Packages.
Pin Configuration
Tab is Vout
1
2
3
Application
Adj/Gnd Out
Front View
In
Active SCSI Terminators.
High Efficiency Linear Regulators.
5V to 3.3V Linear Regulators
Motherboard Clock Supplies.
SOT-223
Ordering Information
Device
SE8117TA
SE8117TXX
Package
SOT-223
SOT-223
Output voltage is adjustable.
XX denotes voltage options. Available voltages are 1.5V, 1.8V, 2.5V,
3.0V, and 3.3V.
V
OUT
Volts
Absolute Maximum Rating
Symbol
V
IN
θ
JC
θ
JA
T
J
T
STG
T
LEAD
Parameter
Input Supply Voltage
Thermal Resistance Junction to Case
SOT-223
Thermal Resistance Junction to Ambient
SOT-223
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 Sec)
Maximum
9
15
156
0 to 125
-40 to 150
260
Units
V
°C/W
°C/W
°C
°C
°C
© Seaward Electronics, Inc., 2004. •
www.seawardinc.com.cn
• Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
Preliminary and all contents are subject to change without prior notice.
1
SEAWARD
ELECTRONICS
INC.
1A Positive Voltage
Regulators (Preliminary)
SE8117
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
Parameter
Test Condition
10mA
≤
I
OUT
≤
1A, T
A
= 25°C,
SE8117T15
Min
Typ
Max
Units
1.5
(-2%)
1.8
2.5
3.0
3.3
1.225
(-2%)
1.250
0.3
0.4
9
48
1.275
(+2%)
V
%
%
mA
µA
µA
V
mA
A
%/°C
°C
%V
O
dB
(+2%)
V
V
O
Output Voltage
(1)
SE8117T18
SE8117T25
SE8117T30
SE8117T33
V
REF
V
SR
V
LR
I
Q
I
ADJ
∆I
ADJ
V
D
I
O
I
CL
T
C
OTP
V
N
R
A
Notes:
1.
2.
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
10mA
≤
I
OUT
≤
1A
I
OUT
= 10mA
(V
IN
- V
OUT
) = 2V
10mA
≤
I
OUT
≤
1A
10mA
≤
I
OUT
≤
1A
∆V
REF
= 1%, I
OUT
= 1A
0.2
1.1
4
1.8
0.07
175
T
A
= 25°C, 10Hz
≤
f
≤
10kHz
f = 120Hz,
C
OUT
= 22µF (Tantalum),
(V
IN
- V
OUT
) = 3V, I
OUT
= 1A
0.003
72
Low duty cycle pulse testing with which T
J
remains unchanged.
∆V
OUT
,
∆V
REF
= 1%.
© Seaward Electronics, Inc., 2004. •
www.seawardinc.com.cn
• Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
Preliminary and all contents are subject to change without prior notice.
2
SEAWARD
ELECTRONICS
INC.
1A Positive Voltage
Regulators (Preliminary)
SE8117
Typical Applications
Adjustable Voltage Regulator
V
IN
>= 3.0V
3
SE8117T15
2
V
OUT
= 1.5V
V
REF
C
IN
10uF
1
R1
124 Ohm
C
OUT
22uF
I
ADJ
R2
24.9 Ohm
Fixed Voltage Regulator
V
IN
>= 4.8V
3
SE8117T33
2
V
OUT
= 3.3V
C
IN
10uF
1
I
Q
C
OUT
22uF
© Seaward Electronics, Inc., 2004. •
www.seawardinc.com.cn
• Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
Preliminary and all contents are subject to change without prior notice.
3
SEAWARD
ELECTRONICS
INC.
1A Positive Voltage
Regulators (Preliminary)
SE8117
Typical Performance Characteristics
Reference Voltage vs Junction Temperature
1250
Reference Voltage (mV)
1245
1240
1235
1230
1225
1220
-25
0
25
50
75
100
125
150
Junction Temperature (C)
Line Transients
V
IN
= 4.5V – 5.5 V
C
IN
= 0.1µF, C
OUT
= 1µF
Output Voltage vs Junction Temperature
3.70
3.65
3.60
Output Voltage
3.55
3.50
3.45
3.40
3.35
3.30
3.25
3.20
-25
0
25
50
75
100
125
150
Junction Temperature (C)
Load Transients
I
LOAD
= 10mA – 1A
C
OUT
= 22µF, C
IN
= 10µF
Dropout Voltage vs Output Current
1.14
1.12
Dropout Voltage (V)
1.1
1.08
1.06
1.04
1.02
1
0
200
400
600
800
1000
Output Current (mA)
© Seaward Electronics, Inc., 2004. •
www.seawardinc.com.cn
• Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
Preliminary and all contents are subject to change without prior notice.
4
SEAWARD
ELECTRONICS
INC.
1A Positive Voltage
Regulators (Preliminary)
SE8117
Outline Drawing for SOT-223
© Seaward Electronics, Inc., 2004. •
www.seawardinc.com.cn
• Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
Preliminary and all contents are subject to change without prior notice.
5
