SEAWARD
ELECTRONICS
5V Positive Voltage
Regulator (Preliminary)
Features
Output voltage of 5.0V (Typ.)
SE78L05
Description
The SE78L05 is three-terminal positive regulator.
The SE78L05 can be used as Zener diode/resistor
combination replacement. It offers an effective
output impedance improvement of two orders of
magnitude, and lower quiescent current. This fixed
voltage regulators can provide local or on-card
regulation for elimination of noise and distribution
problems associated with single point regulation. It
is an excellent solution to the stereo power supply
on PC main board.
Output current up to 150mA (Typ.)
Minimum external components.
Output voltage tolerances of ±4%
ESD rating is 2.7KV (Per MIL-STD-883D).
Application
Sound card on PC main board.
DVD-ROM, CD-ROM.
Networking Equipments.
Application Circuit
Fixed Output Regulator
INPUT
C1
0.33uF
Pin Configuration
SE78L05
GND
OUTPUT
C2
0.1uF
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 1
SEAWARD
ELECTRONICS
5V Positive Voltage
Regulator (Preliminary)
SE78L05
Absolute Maximum Rating
Parameter
Power dissipation
Input Voltage
Operating Junction Temperature
Range
Thermal Resistance
Lead Temperature (Soldering) 10
seconds
Storage Temperature
ESD (HBM) Susceptibility
Symbol
P
V
IN
T
J
θ
JA
T
LEAD
T
STG
V
ESD
Maximum
0.75
18
0 to +125
150 (TO-92)
260
-65 to +150
2.7
Units
W
V
°C
°C/W
°C
°C
KV
Electrical Characteristics
V
IN
= 10V; I
OUT
= 10mA; C
IN
= 0.33µF; C
OUT
= 0.1µF T
J
= 25°C; unless otherwise specified
Symbol
Parameter
Conditions
Min
SE78L05
Typ
5
11
5
4.3
1.1
0.13
62
150
0.66
Max
5.2
45
50
6
--
--
--
--
--
Unit
V
O
∆V
O
∆V
O
I
Q
∆I
Q
∆V
IN
/∆V
OUT
I
PK
∆V
O
/∆T
V
IN
(Min)
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
8V
≤
V
IN
≤
18V
1mA
≤
I
O
≤
40mA
Ripple Rejection
Peak Output Current
Average Output Voltage
Tempco
Minimum Value of Input
Voltage Required to Maintain
Line Regulation
I
O
= 5mA
f =120Hz
8V
≤
V
IN
≤
16V
7V
≤
V
IN
≤
18V
1mA
≤
I
O
≤
100mA
4.8
--
--
--
--
--
--
--
--
V
mV
mA
dB
mA
mV/°C
--
6.1
6.4
V
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 2
SEAWARD
ELECTRONICS
Typical Performance Characteristic
5V Positive Voltage
Regulator (Preliminary)
SE78L05
V
IN
= 10V, I
OUT
= 40mA, C
IN
= 0.33µF, C
OUT
= 0.1µF, T
J
= 25°C, unless specified otherwise.
Quiescent Current vs Input Voltage
Quiescent Current (mA)
Quiescent Current (mA)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
5.00
7.00
9.00
11.00
13.00
15.00
17.00
19.00
Quiescent Current vs Temperature
5.00
4.90
4.80
4.70
4.60
4.50
4.40
4.30
4.20
4.10
4.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
Input Voltage (V)
Temperature (C)
Dropout Voltage vs Temperature
Dropout Voltage (V)
Dropout Voltage (V)
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
0
Dropout Voltage vs Output Current
1mA
40mA
70mA
50
100
150
200
250
Temperature (C)
Dropout Condition:
∆V
OUT
= 2% of V
OUT
Output Current (mA)
Ripple Rejection
Ripple Rejection (dB)
60.00
50.00
40.00
30.00
20.00
10.00
0.00
100.00
1000.00
10000.00
100000.00
Frequency (Hz)
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 3
SEAWARD
ELECTRONICS
5V Positive Voltage
Regulator (Preliminary)
SE78L05
Outline Drawing TO-92
A
B
D
DIM
A
B
E
F
G
H
J
K
N
DIMENSIONS
INCHES
MM
MIN MAX MIN MAX
0.175
0.170
0.500
0.016
0.045
0.095
0.080
0.125
0.205
0.210
0.610
0.021
0.055
0.105
0.105
0.165
4.445
4.318
12.70
0.407
1.143
2.413
2.032
3.175
5.207
5.334
15.50
0.533
1.397
2.667
2.667
4.191
E
G
F
H
K
J
Outline Drawing SOT-89
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
DIM
SOT-89
A
C
D
K
L
M
J
N
H
G
I
A
B
C
D
E
F
G
H
I
J
K
L
M
B
F
E
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 4
SEAWARD
ELECTRONICS
5V Positive Voltage
Regulator (Preliminary)
SE78L05
Outline Drawing SOP8
DIM
1
2
D
N
8
7
6
B1
DIMENSIONS
INCHES
MM
MIN MAX MIN MAX
0.0532 0.0688
0.0040 0.0098
0.0130 0.0200
0.050 BSC
0.0075 0.0098
0.1890 0.1968
0.2284 0.2440
0.1497 0.1574
1.35
1.75
0.10
0.25
0.33
0.51
1.27 BSC
0.19
0.25
4.80
5.00
5.80
6.20
3.80
4.00
B
3
4
5
A1
E
H
A
C
A
A1
B
B1
C
D
H
E
Customer Support
Seaward Electronics Incorporated – China
Rm 1605, Building 1, International Pioneering Park, #1 Shangdi Xinxi Rd
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
49 Showers Dr. J126
Mountain View, CA 94040, USA
Tel: 1-650-941-5725
Last Updated - 11/5/2004
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 5
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