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データシート TS2951 PDF ( 特性, スペック, ピン接続図 )

部品番号 TS2951
部品説明 (TS2950 / TS2951) 150mA Ultra Low Dropout Positive Voltage Regulator
メーカ Taiwan Semiconductor Company
ロゴ Taiwan Semiconductor Company ロゴ 
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TS2951 Datasheet, TS2951 PDF,ピン配置, 機能
TS2950/TS2951 series
150mA Ultra Low Dropout Positive Voltage Regulator
Pin assignment
TO-92
1. Output
2. Ground
3. Input
Pin assignment
SOP-8
1. Output
2. Sense
3. Shutdown
4. Ground
5. Error
6. Voltage tap
7. Feedback
8. Input
Input Voltage Range up to 30V
Output Current up to 150mA
Low Drop Out Voltage 0.4V
General Description
The TS2950/A & TS951/A are low power voltage regulators. These devices are excellent choice for use in
battery-powered applications such as cordless telephone, radio control systems, and portable computers.
The TS2950/A & TS2951/A is features very low quiescent current (75uA Typ.) and very low drop output voltage (Typ.
40uV at light load and 380 mV at 100 mA). This includes a tight initial tolerance of 0.5% typ.(A version), extremely good
load and line regulation 0.05% typ. and very low output temperature coefficient, making the TS2950/A & TS2951/A useful
as a low-power voltage reference.
TS2951/A have other key additional feature of unregulated input voltage transient of -20V below ground (reverse battery).
The error flag output feature is used as power-on reset for warn of a low output voltage, due to following batteries on
input. The logic-compatible shutdown input which enable the regulator to be switched on/off. The regulator output voltage
may be pin-strapped for a 5.0, 3.3 & 3V of programmed from 1.24V to 29V with external pair of resistors. Using of as
design, processing and testing techniques make TS2950/A & TS951/A superior over similar products.
The TS2950/A is offered in 3-pin TO-92 package, The TS2951/A is available in 8-pin plastic SOP-8 package.
Features
— Output voltage available in 5V, 3.3V & 3V
— Extremely low quiescent current
— Low dropout voltage
— Extremely tight load and line regulation
— Very low temperature coefficient
— Need only 1uF for stability
— Unregulated DC input can withstand -20V reverse
battery and +60V positive transients
— Use as Regulator or Reference
— Stable with low-ESR output capacitors
— Current and thermal limiting
— Direct replacement for LP2950 & LP2951 sockets
TS2951 VERSIONS ONLY
— Error Flag warns of output dropout
— Logic-Controlled electronic shutdown
— Additional voltage tap
— Output voltage sense
— Output programmable from 1.24 to 29V
Application
— Battery powered systems
— Portable instrumentation
— Avionics
— Automotive Electronics
— SMPS Post-Regulator
— Voltage Reference
— Portable/Palm top / Notebook computers
— Portable consumer equipment
— Radio control system
Ordering Information
Part No.
Operating Temp. Package
TS2950CT-xx
-40 ~ +85oC
TO-92
TS2951CS-xx
TS2950ACT-xx
-20 ~ +85oC
SOP-8
TO-92
TS2951ACS-xx
SOP-8
Note: Where xx denotes voltage option, available are
5.0V, 3.3V and 3V. Contact factory for additional
voltage options.
TS2950-51 series
1-6
2003/12 rev. B

1 Page



TS2951 pdf, ピン配列
TS2951/A Electrical Characteristics (continues)
(Vin= 15V, Ta= 25 oC unless otherwise specified.)
Parameter
Feedback Pin Bias Current
Test Conditions (note 2)
Min Typ Max Unit
-- 20 40 nA
Reference Voltage Temperature
Coefficient
Feedback Pin Bias Current
Temperature Coefficient
(Note 7)
ppm/
-- 20 -- oC
nA/oC
-- 0.1 --
Error Comparator
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage
VOH= 30V
Vin= 4.5V, IOL = 400uA
(Note 8)
-- 0.01 1
uA
-- 150 250 mV
40 60
-- mV
Power Threshold Voltage
(Note 8)
-- 75 95 mV
Hysteresis
(Note 8)
-- 15 -- mV
Shutdown Input
Output Logic Voltage
Low (Regulator ON)
High(Regulator OFF)
-- 1.3 0.7
2.0 1.3
--
V
Shut down Pin Current
Vs = 2.4V
Vs = 30V
-- 30 50 uA
450 600
Regulator Output Current in
(Note 9)
-- 3 10 uA
Shutdown
Note 1: Output voltage temperature coefficients defined as the worst case voltage change divided by the total
temperature range.
Note 2: Unless otherwise specified all limits guaranteed for Tj= 25oC, Vin= 6V, IL= 100uA and CL= 100uF. Additional
conditions for the 8-pin versions are feedback tied to 5V, 3.3V & 3V tap output Sense (Vout = 5V, 3.3V & 3V) and
Vshutdown 0.8V.
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in
output voltage due to heating effects are covered under the specification for thermal regulation.
Note 4: Line regulation for the TS2951 is tested at 85oC for IL= 1mA.For IL= 100uA and Tj= 125oC, line regulation is
guaranteed by design to 0.2%.
Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its
nominal value measured at 1V differential at very low value of programmed output voltage, the minimum input
supply voltage of 2V (2.3V over temperature) must be taken in to account.
Note 6: Vref Vout (Vin-1V), 2.3Vin30V, 100uAIL 100mA, Tj Tj(max).
Note 7: reference voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
Note 8: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the
nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,
multiply by the error amplifier gain= Vout / Vref = (R1+R2) / R2. For example, at a programmed output voltage of
5V, the Error output is guaranteed to go low when the output drops by 95 mV X 5V / 1.250 = 384mV. Thresholds
remain constant as a percent of Vout as Vout is varied with the dropout warning occurring at typically 5% below
nominal, 7.5% guaranteed.
TS2950-51 series
3-6
2003/12 rev. B


3Pages


TS2951 電子部品, 半導体
A
B
C
TO-92 Mechanical Drawing
TO-92 DIMENSION
DIM
MILLIMETERS
MIN MAX
INCHES
MIN MAX
A 4.30
4.70
0.169
0.185
B 4.30
4.70
0.169
0.185
C 14.30(typ)
0.563(typ)
D 0.43
0.49
0.017
0.019
E 2.19
2.81
0.086
0.111
F 3.30
3.70
0.130
0.146
E
F
G 2.42
H 0.37
2.66
0.095
0.105
0.43
0.015
0.017
H
D
G
SOP-8 Mechanical Drawing
A
16 9
BP
18
G
D
CM
K
R
SOP-8 DIMENSION
DIM
MILLIMETERS
MIN MAX
INCHES
MIN MAX
A 4.80
5.00
0.189
0.196
B 3.80
4.00
0.150
0.157
C 1.35
1.75
0.054
0.068
D 0.35
0.49
0.014
0.019
F 0.40
1.25
0.016
0.049
G 1.27 (typ)
0.05 (typ)
K 0.10
M 0o
0.25
7o
0.004
0o
0.009
7o
P 5.80
6.20
0.229
0.244
F
R 0.25
0.50
0.010
0.019
TS2950-51 series
6-6
2003/12 rev. B

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