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부품번호 | SPX2950 기능 |
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기능 | 150mA Low Dropout Voltage Regulator | ||
제조업체 | Sipex | ||
로고 | |||
전체 13 페이지수
® SPX2950/SPX2951
150mA Low Dropout Voltage Regulator
FEATURES
■ 5.0V and 3.3V at 150mA Output
■ Accurate: 0.5% for SPX2950A/SPX2951A
■ Very Low Quiescent Current
■ Low Dropout Voltage: 300mV at 150mA
■ Extremely Tight Load and Line Regulation
■ Very Low Temperature Coefficient
■ Current & Thermal Limiting
■ Need Only 1µF for Stability
■ Offered in TO-92 (SPX2950) and SOIC
(SPX2951)
■ Direct Replacement for LP2950/LP2951
SPX2951 versions only
■ Error Flag Warns of Output Dropout
■ Logic-Controlled Electronic Shutdown
■ Output Programmable From 1.24 to 29V
8-Pin Surface Mount (S)
OUTPUT
SENSE
SHUTDOWN
GROUND
1
2
3
4
8 INPUT
7 FEEDBACK
6 5V or 3.3V Output
5 ERROR
VOUT
TO-92 (N)
1 23
GROUND
VIN
SPX2951 Top View
SPX2950 Bottom View
Now Available in Lead Free Packaging
APPLICATIONS
■ Battery Powered Systems
■ Cordless Telephones
■ Radio Control Systems
■ Portable/Palm Top/Notebook Computers
■ Portable Consumer Equipment
■ Portable Instrumentation
■ Avionics
■ SMPS Post-Regulator
■ Voltage Reference
■ Automotive Electronics
DESCRIPTION
The SPX2950 and SPX2951 are low power voltage regulators. These devices are an excellent choice for
use in battery-powered applications such as cordless telephones, radio control systems, and portable
computers. The SPX2950 and SPX2951 feature low quiescent current and low dropout voltage (typ. 20mV
at 100µA and 300mV at 150mA). This includes a tight initial tolerance of (0.5% for SPX2950A/SPX2951A),
extremely good load and line regulation (0.05% typ.), and very low output temperature coefficient (20ppm/
°C typ.), making the SPX2950/SPX2951 useful as a low-power voltage reference.
The error flag output feature is used as a power-on reset for warning of a low output voltage, due to a falling
voltage. The logic compatible shutdown feature enables the regulator to be switched ON and OFF. The
SPX2950 is offered in a 3-pin TO-92 package compatible with other 5.0V, 3.3V regulators. The SPX2951
is availiable in an 8-lead SOIC package.
UNREGULATED DC
+
7
FEEDBACK
8
INPUT
1
OUTPUT
FROM
CMOS OR
TTL
3
SHUTDOWN
+
_
ERROR
AMPLIFIER
180kΩ
60 mV
+
+
60kΩ
_ ERROR DETECTION
+ 1.23V
COMPARATOR
REFERENCE
2
SENSE
6
5V TAP
5
______
ERROR
4
GROUND
5V
330kΩ
+
1µF
.
.
TO CMOS OR
TTL
Block Diagram of SPX2951, 8 Lead 5V Version
DATE: 12/01/04
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
1
©Copyright 2004 Sipex Corporation
TYPICAL PREFORMANCE CHARACTERISTICS
6
5
4
R L =50kΩ
3
R L =50kΩ
2
1
0
0 123 45
INPUT VOLTAGE (VOLTS)
Dropout Characteristics
6
250
225
200
RL = 50kΩ
175
150
125
100 RL =
75
50
25
0
0
1 2 3 4 5 67 8
INPUT VOLTAGE (VOLTS)
9 10
Input Current
10
1
0.1
0.01
0.1 1 10
LOAD CURRENT (mA)
Quiescent Current
100
320
280
240
200 IL= 1mA
160
IL= 0
120
80
40
0
0 1 2 34 56 7 8
INPUT VOLTAGE (VOLTS)
Ground Current
160
150
140
130 RL=50 Ω
120 VOUT = 5V
110
100
90
80
70
60
50
40
30
20
10
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (VOLTS)
Input Current
6
5
V IN = 6V
IL = 100mA
4
3
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (ºC)
Ground Current
8
7
6
IL=100mA
5
4
3
2
1
0
0 12345678
INPUT VOLTAGE
Ground Current
190
170
V IN=6V
IL =100uA
150
130
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (ºC)
Quiescent Current
DATE: 12/01/04
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
4
©Copyright 2004 Sipex Corporation
4페이지 TYPICAL PREFORMANCE CHARACTERISTICS
1.8
1.6
1.4
1.2
1.0
0.8
0.6
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (ºC)
Shutdown Threshold Voltage
5
4
2
0
-2
~~
1
1.25W
0
-1
0 10 20 30
TIME (µs)
Thermal Response
40
3.5
3.0
2.5
CL = 220µF
2.0
CL = 3.3µF
1.5 CBYP = 0.1µF
IL = 100mA
CL = 1µF
1.0
0.5
0.0
50
10 2 10 3
10 4
FREQUENCY (Hz), C BYP=0.1uF
Output Noise
10 5
30
25
20
15
10 T J= 150 ºC
5
IL = 100µA
IL = 1mA
0
~~
10
5 T J= 125 ºC
0
-5
IL = 100µA
-10
5 10 15 20 25
INPUT VOLTAGE (V)
30
Line Regulation
80
IL = 50mA
70
60
IL = 100mA
50
40
C L = 1µF
30 VIN = 6V
VOUT = 5V
20
10
10 1
10 2 10 3 10 4
FREQUENCY (Hz)
Ripple Rejection
10 5
10 6
DATE: 12/01/04
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
7
©Copyright 2004 Sipex Corporation
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
SPX2950 | 150mA Low Dropout Voltage Regulator | Sipex |
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |