TS39150CZ25 [TSC]
1.5A Ultra Low Dropout Fixed Positive Voltage Regulator; 1.5A超低压降固定正电压稳压器
| 型号： | TS39150CZ25 |
| 厂家： | 
TAIWAN SEMICONDUCTOR COMPANY, LTD |
| 描述： | 1.5A Ultra Low Dropout Fixed Positive Voltage Regulator |
| 文件： | 总5页 (文件大小：116K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS39150
1.5A Ultra Low Dropout Fixed Positive Voltage Regulator
TO-263
Pin assignment:
1. Input
2. Ground
Low Dropout Voltage 0.4V (typ.)
3. Output
General Description
The TS39150 series are using process with a PNP pass element for high current, high accuracy and low dropout voltage
regulators. These regulator s feature 400mV(typ) dropout voltages and very low ground current, these devices also find
applications in lower current and low dropout critical systems, where their tiny dropout voltage and ground current values
are important attributes.
The TS39150 are fully protected against over current faults, reversed input polarity, reversed lead insertion, over
temperature operation, and positive and negative transient voltage spikes.
This series is offered in 3-pin TO-263, TO-220 package.
Features
Block Diagram
Dropout voltage typically 0.4V @Io=1.5A
Output current up to 1.5A
Low ground current
Output voltage trimmed before assembly
Extremely fast transient response
+20V Transient peak voltage
-20V Reverse peak voltage
Internal current limit
Thermal shutdown protection
Applications
Ordering Information
Battery power equipment
Operation Temp.
Part No.
Package
Automotive electronics
(Junction)
High efficiency “Green” computer system
High efficiency linear power supplies
High efficiency post regulator for switching
supply
TS39150CZxx
TS39150CMxx
TO-220
TO-263
-40 ~ +125 oC
Note: Where xx denotes voltage option, available are 12V, 5.0V,
3.3V and 2.5V. Contact factory for additional voltage
options.
Absolute Maximum Rating (Note 1)
Input Supply Voltage (Note 2)
Operation Input Voltage
Vin
-20V ~ +20
20
V
V
Vin (operate)
Power Dissipation (Note 3)
PD
TJ
Internally Limited
-40 ~ +125
W
oC
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 oC)
TSTG
-65 ~ +150
5
oC
S
TS39150
1-5
2005/3 rev. A
Electrical Characteristics
Vin = Vout + 1V, IL = 10mA, Co = 10uF, Ta = 25 oC, unless otherwise specified.
Parameter
Conditions
Min
Typ
Max
Unit
Output Voltage
0.990|Vo|
0.980|Vo|
12 / 5.0
3.3/ 2.5
1.010|Vo|
1.020|Vo|
V
Output Voltage
10mA ≤ IL ≤ 1.5A,
V
V
Vo+1V ≤ Vin ≤ 26V
Input Supply Voltage
Output Voltage Temperature
Coefficient
--
--
--
20
40
100
ppm/ oC
Line Regulation
Vo+1V ≤ Vin ≤ 26V
10mA ≤ IL ≤ 1.5A
IL=100mA
IL=750mA
IL=1.5A
--
--
--
--
--
--
--
--
--
--
--
--
0.05
0.2
80
0.5
1.0
200
500
600
--
%
%
Load Regulation
Dropout Voltage (Note 4)
350
400
100
8
mV
Quiescent Current (Note 5)
IL=100uA
IL=750mA
IL=1.5A
--
mA
A
22
--
Short Circuit Current (Note 6)
Output Noise,
Vout=0
2.1
600
400
260
3.5
--
CL=2.2uF
CL=10uF
10Hz to 100KHz, IL=100mA
--
uVrms
CL=33uF
--
Thermal Performance
Condition
Thermal Resistance
Junction to Ambient
Package type
TO-220
Typ
60
Unit
oC/W
TO-263
80
Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed
Specifications and test conditions see the Electrical Characteristics.
Note 2: Maximum positive supply voltage of 20V must be limited duration (<100mS) and duty cycle (<1%).
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to
ambient thermal resistance, θja, and the ambient temperature , Ta. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective
value of θja can be reduced by using a heatsink.
Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
nominal value measured at 1V differential.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the
ground pin current and output load current.
Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 1.5A at the maximum
specified temperature.
TS39150
2-5
2005/3 rev. A
Application Information
Application Information
Minimum Load Current
The TS39150 series are high performance with low
dropout voltage regulator suitable for moderate to high
current and voltage regulator application. Its
400mA(typ) dropout voltage at full load and over
temperature makes it especially valuable in battery
power systems and as high efficiency noise filters in
post regulator applications. Unlike normal NPN
transistor design, where the base to emitter voltage
drop and collector to emitter saturation voltage limit the
minimum dropout voltage, dropout performance of the
PNP output of these devices is limited only by low Vce
saturation voltage.
The TS39150 series is specified between finite loads.
If the output current is too small leakage currents
dominate and the output voltage rises. A 10mA
minimum load current swamps any expected leakage
current across the operating temperature range.
Thermal Characteristics
TS39150 series linear regulators are simple to use, the
most complicated design parameters to consider are
thermal characteristics, thermal design requires the
following application specification parameters:
z
Maximum ambient temperature, Ta
Output current, Iout
z
z
z
The TS39150 series is fully protected from damage due
to fault conditions. Linear current limiting is provided.
Output current during overload conditions is constant.
Thermal shutdown the device when the die temperature
exceeds the maximum safe operating temperature.
Transient protection allows device survival even when
the input voltage spikes above and below nominal. The
output structure of these regulators allows voltages in
excess of the desired output voltage to be applied
without reverse current flow.
Output voltage, Vout
Input voltage, Vin
We calculate the power dissipation of the regulator
from these numbers and the device parameters from
this data sheet. A heatsink may be required depending
on the maximum power dissipation and maximum
ambient temperature of the application. Under all
possible operating conditions, the junction temperature
must be within the range specified under absolute
maximum ratings. To determine if the heatsink is
required, the power dissipated by the regulator, PD
must be calculated.
Typical Application Circuit
The below formula shows the voltages and currents for
calculating the PD in the regulator:
Iin = IL / IG
PD = (Vin-Vout) * IL + (Vin) * IG
Ex. PD = (3.3V-2.5V) * 1.5A + 3.3V * 11mA
= 1200mW + 36mW
= 1236mW
Remark: IL is output load current,
IG is ground current.
Capacitor Requirement
Vin is input voltage
Vout is output voltage
The TS39150 series requires an output capacitor to
maintain stability and improve transient response is
necessary. The value of this capacitor is dependent
upon the output current, lower currents allow smaller
capacitors. TS39150 series regulators are stable with
the 10uF minimum capacitor value at full load. Where
the regulator is powered from a source with high AC
impedance, a 0.1uF capacitor connected between input
and ground is recommended. The capacitor should
have good characteristics to above 250KHz. The
capacitance values will be improved transient response,
ripple rejection and output noise.
The next parameter which must be calculated is the
maximum allowable temperature rise, TR(max). this is
calculated by the using to formula:
TR(max) = TJ(max) – TA(max)
Where: TJ(max) is the maximum allowable junction
temperature, which is 125oC for commercial
grade parts.
TA(max)
is
the
maximum
ambient
temperature which will be encountered in the
application.
TS39150
3-5
2005/3 rev. A
Application Information (continues)
Using the calculated values for TR(max) and PD, the
maximum allowable value for the junction to ambient
thermal resistance, θja, can now be found:
θja = TR(max) / PD
IMPORTANT: if the maximum allowable value for is
o
found to be ≥60 C/W for the TO-220 package, ≥80
oC/W for the TO-263 package, no heatsink is needed
since the package alone will dissipate enough heat to
satisfy these requirements. If the calculated value for
θja falls below these limits, a heatsink is required.
TS39150
4-5
2005/3 rev. A
TO-220 Mechanical Drawing
K
B
TO-220 DIMENSION
MILLIMETERS
A
L
INCHES
MIN
DIM
MIN
10.000
3.240
2.440
-
MAX
10.500
4.440
2.940
6.350
1.106
2.715
5.430
14.732
9.017
16.510
4.826
1.397
29.620
2.921
0.610
6.858
MAX
0.413
0.175
0.116
0.250
0.040
0.058
0.107
0.581
0.355
0.650
0.190
0.055
1.230
0.115
0.024
0.270
A
B
C
D
E
F
G
H
I
0.394
0.128
0.096
-
P
J
0.381
2.345
4.690
12.700
8.382
14.224
3.556
0.508
27.700
2.032
0.255
5.842
0.015
0.092
0.092
0.500
0.330
0.560
0.140
0.020
1.060
0.080
0.010
0.230
I
M
D
J
H
K
L
M
N
O
P
O
E
F
G
N
TO-263 Mechanical Drawing
TO-263 DIMENSION
MILLIMETERS
A
INCHES
E
DIM
MIN
10.000
14.605
0.508
2.420
4.064
1.118
0.450
8.280
1.140
1.480
MAX
10.500
15.875
0.991
2.660
4.830
1.400
0.730
8.800
1.400
1.520
MIN
MAX
0.413
0.625
0.039
0.105
0.190
0.055
0.029
0.346
0.055
0.060
F
A
B
C
D
E
F
G
H
I
0.394
0.575
0.020
0.095
0.160
0.045
0.018
0.325
0.044
0.058
I
B
H
C
J
G
D
TS39150
5-5
2005/3 rev. A
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