S5J2187 [SECOS]
750mA CMOS Positive Voltage Regulator; 750毫安CMOS正电压稳压器
| 型号： | S5J2187 |
| 厂家： | 
SECOS HALBLEITERTECHNOLOGIE GMBH |
| 描述： | 750mA CMOS Positive Voltage Regulator |
| 文件： | 总7页 (文件大小：1432K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
RoHS Compliant Product
Description
The S5J2187 of positive,linear regulators feature low quiescent
current (45µA typ.) with low dropout voltage, making them ideal
for battery applications. Output voltage are set at the factory and
trimmed to 1.5% accuracy.These rugged devices have both
Thermal Shutdown and Current Fold-back to prevent device failure
under the "Worst" of operating conditions. An additional feature is a
"Power Good" detector, which pulls low when the output is out of
with an output capacitance of
regulation.The S5J2187 is stable
4.7µF or greater.
Features
*
*
Low Temperature Coefficient
Over-Temperature Shutdown
Millimeter
Millimeter
Min. Max.
REF.
REF.
Min.
0.45
2.20
0.46
0
Max.
0.60
2.40
0.58
0.15
1.50
5.59
A
B
C
D
P
S
6.35
5.21
9.40
2.40
6.73
5.46
G
H
J
* Power Good Output Function
* Very Low Dropout Voltage
10.20
3.00
* Noise Reduction Bypass Capacitor
* Short Circuit Current Fold-back
* Guaranteed 750mA output
K
L
1.27 REF.
0.90
5.40
0.50
0.80
M
* Current Limiting
* Power-Saving Shutdown Mode
Applications
* PC Peripherals
* Wireless Devices
* Portable Electronics
Functional Block Diagram
* Battery Powered Widgets
* Instrumentation
Typical Application Circuit
S5J2187
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 1 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
Absolute Maximum Ratings
Ratings
Parameter
Symbol
Unit
V
Input Voltage
8
VIN
IOUT
VOUT
Topr
Tj
Output Current
mA
V
PD/(VIN-VO)
Output Voltage
Gnd-0.3~VIN+0.3
o
C
o
C
o
C
-40~+85
Operating Ambient Temperature
Junction Temperature
-40~+125
150
1.2
B
Tj Max.
PD
Max. Junction Temperature
oC)
Power Dissipation ( T=100
W
EDS Classification
Electrical Characteristics TA=25ć unless otherwise noted
(VIN=VOUT (T) + 2V, VEN=VIN, CIN=1uF, COUT=4.7uF)
Parameter
Symbol
Condition
Min
TYP
Max
Unit
V
OUT(T)
VOUT(E)
(Note1)
IO=1mA, VIN=VOUT(T)+2V
-1.5
1.5
%
Output Voltage
(Note2)
IO
ILIM
ISC
V
O
>1.2V
>1.2V
750
-
-
-
-
mA
mA
mA
%
Output Current
Current Limit
Short Circuit Current
Load Regulation
VO
750
V
IN=VOUT(T)+1V, V
O
< 0.4V
-
750
0.2
-
-
V
IN=VOUT(T)+2V, I
O=1mA to 750mA
-1
1
REGLOAD
V
OUT(T)=1.5V
OUT(T)=1.8V
-
1000
650
500
70
-
I
O
O
=750mA
mV
Dropout Voltage
VDROPOUT
V
-
-
V
=VOUT(E)-2%
V
OUT(T)≥2.0V
IN=VOUT(T)+2V, I =0mA
IN=VOUT(T)+2V, I =1mA to 750mA
OUT(T)<2.0V
-
-
IQ
IGND
V
O
-
-
45
45
-
ꢀA
ꢀA
Quiescent Current
Ground Pin Current
V
O
V
-0.15
-0.1
-0.4
Note3
-
0.15
0.1
0.4
7
I
O=1mA
V
IN=VOUT(T)+1 to
%
Line Regulation
REGLINE
2.0V≤VOUT(T)<4.0V
4.0V≤VOUT(T)
0.02
-
V
OUT(T)+2
-
V
к
Input Voltage
Over Temperature Shutdown
VIN
OTS
OTH
150
30
-
к
Over Temperature Hysterisis
-
-
Output Voltage
Temperature Coefficient
ppm/к
-
30
-
TC
IADJ
ILoad
VREF
-
-
1
-
-
ꢀA
ꢀA
V
ADJ Input Bias Current
Minimum Load Current
ADJ Reference Voltage
VIN=2.5V
70
1.221 1.240
1.26
f=1kHz
f=10kHz
f=100kHz
-
75
55
30
30
-
-
-
-
-
Io=100mA
Co=4.7ꢀF
(ceramic)
dB
Power Supply Rejection
PSRR
-
-
f=10Hz~100kHz, Io=10mA, Co=4.7ꢀF
-
ꢀVrms
V
Output Voltage Noise
eN
VEH
VEL
IEH
IEL
V
IN=2.7V to 7V
IN=2.7V to 7V
2.0
0
-
VIN
EN Input Threshold
V
-
0.4
1
V
V
EN=VIN, VIN=2.7V to 7V
EN= 0V, VIN=2.7V to 7V
IN=5V, V =0V, VEN<VEL
-
ꢀA
ꢀA
ꢀA
EN Input Bias Current
V
-
-
1
V
O
-
0.5
2
ISD
Shutdown Supply Current
Note 1: VOUT (E) =Effective Output Voltage (i.e. the output voltage when “VOUT (T) + 2.0V” is provided at the VIN pin while maintaining a
certain IOUT value).
2: VOUT (T) =Specified Output Voltage
3: VIN (MIN) =VOUT+VDROPOUT
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 2 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
Ordering Information(contd.)
Marking
Part Number
Output Voltage
Marking
Part Number
Output Voltage
7HAD2
XXXX
Adjustable
S5J 2187-AD
Detailed Description
The S5J2187 of COMS regulator contains a PMOS pass transistor, voltage reference, error amplifier, over-
current protection, and thermal shutdown.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal
protection circuits. During normal operation, the error amplifier compares the output voltage to a precision
reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds
140к, or the current exceeds 2.2A. During thermal shutdown, the output voltage remains low. Normal
operation is restored when the junction temperature drops below 120к.
The S5J2187 behaves like a current source when the load reaches 2.2A. However, if the load impedance
drops below 0.3ohms, the current drops back to 600mA to prevent excessive power dissipation. Normal
operation is restored when the load resistance exceeds 0.75ohms.
External Capacitors
The S5J2187 is stable with an output capacitance to ground of 4.7ꢀF or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the
highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are
comparatively expensive. One option is to parallel a 0.1ꢀF ceramic capacitor with a 10uF Aluminum Electrolytic.
The benefit is low ESR, high capacitance, and low overall cost.
A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be at least 0.1ꢀF to have a beneficial effect.
All capacitors should be placed in close proximity to the pins. A “Quiet” ground termination is desirable. This
can be achieved with a “Star” connection.
Enable
When EN pin is pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In
this state, the quiescent current is less than 2ꢀA. This pin behaves much like an electronic switch.
100KΩ resistor is necessary between VEN source and EN pin when VEN is high than VIN.
(Note: There is no internal pull-up for EN pin. It can not be floating.)
Adjustable Version
The adjustable version uses external feedback resistors to generate an output voltage anywhere from 1.5V to
5.0V. Vadj is trimmed to 1.24V and Vout is given by the equation:
VOUT=Vadj * (1+R1/R2)
Feedback resistors R1 and R2 should be high enough to keep quiescent current low, but increasing R1+R2 will
reduce stability. In general, R1 and R2 in the 10’s of kΩ will produce adequate stability, given reasonable
layout precautions. To improve stability characteristics, keep parasitic on the ADJ pin to minimum, and lower
R1 and R2 values.
ht tp://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 3 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
Characteristics Curve
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 4 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 5 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
ht tp://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 6 of 7
S5J2187
750mA CMOS
Elektronische Bauelemente
Positive Voltage Regulator
External Resistor Divider Table
Ω
R1(k )
Ω
R1(k )
1
2
5
10
20
1
2
5
10
20
Ω
R2(k
Ω
)=(1.24*R1(k
Ω
))/(VOUT-1.24)
R2(k )=(1.242*R1(k ))/(VOUT-1.242)
Ω
VOUT
VOUT
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
20.67
11.27
7.75
5.90
4.77
4.00
3.44
3.02
2.7
41.33 103.33 206.67 413.33
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
3.65
3.70
3.75
3.80
3.85
3.90
3.95
4.00
4.05
4.10
4.15
4.20
4.25
4.30
4.35
4.40
4.45
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
0.63
0.62
0.60
0.59
0.57
0.56
0.55
0.54
0.53
0.51
0.50
0.49
0.48
0.48
0.47
0.46
0.45
0.44
0.43
0.43
0.42
0.41
0.41
0.40
0.39
0.39
0.38
0.37
0.37
0.36
0.36
0.35
0.35
0.34
0.34
0.33
0.33
1.27
1.23
1.20
1.18
1.15
1.12
1.10
1.07
1.05
1.03
1.01
0.99
0.97
0.95
0.93
0.92
0.90
0.88
0.87
0.85
0.84
0.82
0.81
0.80
0.78
0.77
0.76
0.75
0.74
0.73
0.72
0.71
0.70
0.69
0.68
0.67
0.66
3.16
3.08
3.01
2.94
2.87
2.81
2.74
2.68
2.63
2.57
2.52
2.47
2.42
2.38
2.33
2.29
2.25
2.21
2.17
2.13
2.09
2.06
2.03
1.99
1.96
1.93
1.90
1.87
1.85
1.82
1.79
1.77
1.74
1.72
1.69
1.67
1.65
6.33
6.17
6.02
5.88
5.74
5.61
5.49
5.37
5.25
5.15
5.04
4.94
4.84
4.75
4.66
4.58
4.49
4.41
4.34
4.26
4.19
4.12
4.05
3.99
3.92
3.86
3.80
3.75
3.69
3.64
3.58
3.53
3.48
3.43
3.39
3.34
3.30
12.65
12.34
12.04
11.75
11.48
11.22
10.97
10.74
10.51
10.29
10.08
9.88
9.69
9.50
9.32
9.15
8.99
8.83
8.67
8.52
8.38
8.24
8.10
7.97
7.85
7.73
7.61
7.49
7.38
7.27
7.17
7.07
6.97
6.87
6.78
6.68
6.60
22.55
15.50
11.81
9.54
8.00
6.89
6.05
5.39
4.86
4.43
4.07
3.76
3.49
3.26
3.06
2.88
2.73
2.58
2.46
2.34
2.23
2.14
2.05
1.97
1.89
1.82
1.76
1.70
1.64
1.59
1.54
1.49
1.45
1.41
1.37
1.33
1.30
56.36
38.75
29.52
23.85
20.00
17.22
15.12
13.48
12.16
11.07
10.16
9.39
8.73
8.16
7.65
7.21
6.81
6.46
6.14
5.85
5.59
5.34
5.12
4.92
4.73
4.56
4.40
4.25
4.11
112.73 225.45
77.50 155.00
59.05
47.69
40.00
34.44
30.24
26.96
24.31
22.14
20.33
18.79
17.46
16.32
15.31
14.42
13.63
12.92
12.28
11.70
11.17
10.69
10.25
9.84
118.10
95.38
80.00
68.89
60.49
53.91
48.63
44.29
40.66
37.58
34.93
32.63
30.62
28.84
27.25
25.83
24.55
23.40
23.34
21.38
20.50
19.68
18.93
18.24
17.59
16.99
16.42
15.90
15.40
14.94
14.50
14.09
13.70
13.33
12.98
2.43
2.21
2.03
1.88
1.75
1.63
1.53
1.44
1.36
1.29
1.23
1.17
1.12
1.07
1.02
0.98
0.95
0.91
0.88
0.85
0.82
0.79
0.77
0.75
0.73
0.70
0.69
0.67
0.65
9.47
9.12
8.79
8.49
8.21
3.97
3.85
3.73
3.63
3.52
3.43
3.33
3.25
7.95
7.70
7.47
7.25
7.05
6.85
6.67
6.49
Ω
Note: Small load (greater than 2mA) is necessary as R1 or R2 is larger than 50k
down to 0V on disable mode.
. Otherwise, output voltage probably can not be pulled
ht tp://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 7 of 7
相关型号：
©2020 ICPDF网 联系我们和版权申明