1.5V Voltage Reference
Description
SE5170 is a precision voltage reference that is
designed to work at very low current and low
voltage conditions. The SE5170 can work from a
supply voltage as low as 1.6v, and consumes as low
as 8uA current. Temperature stability is averaging
50ppm/
o
C. It is ideal for MP3/MPEG4 applications
where a constant voltage reference is required,
which
is
independent
of
the
environment
temperature. In addition, SE5170 is designed to be
stable under conditions where Cin and Cout are not
present. However, it is recommended to include Cin
and Cout in the system design as this will increase
the PSRR rating, as shown in the PSRR graph.
SE5170
Features
Minimum Vin at 1.6V.
Low Ground current as low as 8uA. (Typ.)
Guaranteed 5mA output current over the full
operating temperature range.
Extremely low temperature drift at 50ppm/
o
C.
Stable operation without Cin and Cout.
Rugged 5KV ESD withstand capability.
Standard SOT-23-3L package.
Applications
1.5V Reference for Action 2051, 2085, 2097 MP3
solutions.
1.5V Temperature Independent Voltage reference.
Other independent voltage reference applications.
Pin Configuration
Typical Application
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 1
COUT = 1uF
CIN = 1uF
1.5V Voltage Reference
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
) ..………..……………….+6V
Power Dissipation (P
D
) ………….. Internally Limited
(3)
SE5170
Operating Ratings
(2)
Supply Input Voltage (V
IN
) ……..…… +1.6V to +5.5V
Junction Temperature (T
J
) …….…….. 0°C to +125°C
Package Thermal Resistance ……………… 250°C/W
Junction Temperature (T
J
) ………................….. 150°C
Lead Temperature (soldering, 5 sec.) ……....…. 260°C
Storage Temperature (T
S
) ………….. -10°C to +150°C
Electrical Characteristics
V
IN
= 5V; I
OUT
= 1mA; T
J
= 25°C, unless otherwise specified.
Symbol
V
IN
Parameter
Input Voltage
Range
Output Voltage
Accuracy
Output Voltage
Temperature Coefficient
Line Regulation
Load Regulation
(5)
Conditions
Min
1.6
Typ
Max
6
Units
V
V
OUT
SE5170-1.5V
1.470
1.5
1.530
V
ΔV
OUT
/ΔT
ΔV
OUT
/ V
OUT
ΔV
OUT
/ V
OUT
T
PROTECTION
PSRR
I
GROUND
Note 4
V
IN
= 1.6V to 5.5V
V
IN
=2V,I
OUT
=0mA to 5mA
Thermal Protection Temperature
Protection Hysterisys
f =100Hz,Vin=2.2V,Vp-p=1V
I
OUT
=1mA
--
--
--
--
--
--
--
-50
0.3
1.0
150
20
70
8
--
--
--
--
--
--
--
ppm/
℃
%/V
%
℃
Thermal Protection
Ripple Rejection
Ground Current
dB
μA
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 2
1.5V Voltage Reference
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
SE5170
Note 3:
The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: P
D(MAX)
= (T
J(MAX)
- T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the
regulator will go into thermal shutdown.
Note 4:
Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range.
Note 5:
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for
load regulation in the load range from 0A to 5mA. Changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 3
1.5V Voltage Reference
SE5170
1.55
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
1.46
1.45
1.5
Line Regulation
(Iout=1mA)
Output Voltage (V)
Output Voltage vs. Temperature
1.55
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
1.46
1.45
0
20
40
60
80
Temperature (C)
100
120
Vout (V)
2.5
3.5
4.5
Vin (V)
5.5
Load Regulation
(Vin=1.8V)
1.55
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
1.46
1.45
0
1
2
3
4
Vin (V)
5
6
PSRR
(Vin=2.2V,Vp-p=1V,Cin=Cout)
80
70
60
PSRR (dB)
50
40
30
20
10
0
0.1
1
10
Frequency (kHz)
100
1uF
0.1uF
No Cap
Vout (V)
IQ vs. Vin
15
13
11
IQ (uA)
9
7
5
3
1
0
2
4
6
8
Vin (V)
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 4
1.5V Voltage Reference
OUTLINE DRAWING SOT-23-3L (SC-59)
C
J
B
H
SE5170
DIM
A
B
C
D
E
F
G
H
J
K
L
N
DIMENSIONS
INCHES
MM
MIN MAX MIN MAX
0.110
0.047
0.083
0.035
0.070
0.018
0.015
0.0005
0.034
0.003
-
0.120
0.055
0.104
0.040
0.080
0.024
0.020
0.004
0.040
0.007
0.027
2.80
1.20
2.10
0.89
1.78
0.45
0.37
0.013
0.887
0.085
-
3.04
1.40
2.64
1.03
2.05
0.60
0.51
0.10
1.02
0.18
0.69
D
A
E
F
G
K
L
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
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 5
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