DESCRIPTION APPLICATIONS FEATURES SCHEMATIC DIAGRAM

RS78L05
3-Terminal Positive Voltage Regulators
DESCRIPTION
These regulators employ internal current-limiting and
thermal-shutdown, making them essentially indestructible.
They can deliver up to 100mA output current.
APPLICATIONS



FEATURES




Maximum Output Current of 100mA (TC=25℃)
Internal Short-Circuit Current Limiting
Internal Thermal Overload Protection
TO-92 & SOT-89 Package
SCSI-2 active termination
High efficiency linear regulators
5V to 3.3V voltage converter
SCHEMATIC DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan
RS78L05
APPLICATION CIRCUITS
Constant Current Regulator
V IN
Circuit for Increasing Output Voltage
1
V OUT
3
V
IN
1
V
3
RS78L05
OUT
RS78L05
2
R1
0.33uF
2
IB
R
1
0.33uF
I R1
0.1uF
10uF
R
0.1uF
VOUT=VOUT(IC)+VZ
I1=VOUT(IC)/R1
VOUT=VOUT(IC)(1+R2/R1)+R2*IB
High Output Current with Short-circuit Protection
Adjustable Output Regulator
V IN
V IN
1
R sc
Q1
V OUT
3
RS78L05
R1
Q2
1
0.1uF 10uF
IB
+
V OUT
3
RS78L05
2
0.33uF
10uF
2
2
R1
0.33uF
R2
0.1uF
10uF
R1VBE1/IB(max)
RSC=VBE2/ISC, ISC: Short-Circuit Current
VOUT=VOUT(IC)(1+R2/R1)
ORDER INFORMATION
DEVICE
RS78L05 X Y
V1.1
DEVICE CODE
X is Reference voltage precision designator:
A: 5V ±3%
Y is package designator :
A: TO-92
M: SOT-89
2
May 2015
RS78L05
PIN ASSIGNMENTS
TO-92
SOT-89
PIN DESCRIPTION
Package
TO- 92
SOT-89
Pin No.
1
2
3
Pin Name
VOUT
GND
VIN
Description
Regulator Output Pin
Ground Pin
Regulator Input Pin
ABSOLUTE MAXIMUM RATINGS
(TA=25C, Unless Otherwise Specified)
Characteristic
Symbol
Input Voltage
VIN
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Thermal Resistance
V1.1
PD
Topr
Tstg
Tj
Rth(j-a)
Rating
30
TO-92
700
SOT-89
500
-40 to 125
-40 to 150
150
208
3
Unit
V
mW
mW
o
C
o
C
o
C
o
C/W
May 2015
RS78L05
ELECTRICAL CHARACTERISTICS
VIN=10V, IOUT=40mA, CIN=0.33uF, COUT=0.1uF, 0CTj125C (unless otherwise specified)
Parameter
Symbol
RS78L05
Conditions
Typ
Max
4.85
5
5.15
4.85
5
5.15
Tj=25C, 7VVIN20V
-
15
150
Tj=25C, 8VVIN20V
-
15
100
Tj=25C, 1mAIOUT100mA
-
5
60
Tj=25C, 1mAIOUT40mA
-
8
30
IOUT=5mA, Tj=25C
-
3.9
6
-
-
1.5
-
-
0.1
-
40
-
uVrms
47
62
-
dB
-
1.7
2.5
V
Tj=25C
Output Voltage
VO
1mAIOUT70mA
7VVIN20V, 1mAIOUT40mA
Line Regulation
Regline
Load Regulation
Regload
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
IB
o
IB
VN
8VVIN20V, Tj=25 C
o
1mAIOUT40mA, Tj=25 C
10Hzf100KHz, Tj=25C
o
Ripple Rejection
RR
8VVIN18V, f=120Hz, Tj=25 C
Dropout Voltage
VD
Tj=25C, IOUT=100mA
Peak Output Current
IPK
Output Resistance
RO
Average Temperature
Coefficient of Output
Voltage
V1.1
TCVO
Units
Min
150
V
mV
mV
mA
mA
mA
f=1KHz
-
17
-
m
IOUT=5mA
-
-
-0.6
mV/C
4
May 2015
RS78L05
CHARACTERISTICS CURVE
Current Cut-off Grid Voltage
Ripple Rejection
70
VO
60
Output Voltage (V)
Ripple Rejection (dB)...
50
40
30
20
Vin=(4.5+Vout(ic))VDC+3.5Vrms
Iout=40mA
Tj=25oC
10
Tj=25℃
0
10
100
1000
10000
100000
0.0
1000000
0.05
0.1
Output Current (A)
Frequency (Hz)
0.2
Output Voltage as a Function of Junction
Temperature
Worst Case Power Dissipation
(TO-92 Package)
400
2
300
1
Output Voltage (V)
Output Current (mA)
0.15
200
0
-1
100
Io=5mA
-2
0
0
5
10
15
20
25
30
0
35
50
100
150
200
o
Vinput-Voutput Voltage (V)
Junction Temperature ( C)
Load Transient Response
Voltage Range
100
2.0
50
1.5
0
VO
Voutput (V)
2.5
Load Current (mA)
Output Voltage Deviation (V)...
3.0
1.0
0.5
0.0
Vin=Vout(ic)+5V
Tj=25o C
-0.5
-1.0
0
5
10
15
20
25
30
35
40
45
50
0
Time (uS)
V1.1
5
10
15
20
25
30
35
Vinput-Voutput (V)
5
May 2015
RS78L05
PACKAGE INFORMATION
3-PIN, TO-92
Symbol
V1.1
Millimeter
A
B
C
D
E
F
Min.
4.33
4.33
12.70
0.36
3.36
Max.
4.83
4.83
0.56
*1.27
3.76
G
H
I
0.36
-
0.56
*2.54
*1.27
α 1
-
*5°
α 2
-
*2°
α 3
-
*2°
6
May 2015
RS78L05
3-PIN, SOT-89
Symbol
Millimeter
A
B
Min.
4.40
4.05
Max.
4.60
4.25
C
D
1.50
2.40
1.70
2.60
E
F
0.36
*1.50
0.51
-
G
*3.00
-
H
I
1.40
0.35
1.60
0.41
Notes:
1. All dimensions are in millimeter.
2. *:Typical
V1.1
7
May 2015
RS78L05
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian Dist., New Taipei City 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.1
8
May 2015