TLF80511TF V33 [INFINEON]
TLF80511TF V33 是一款线性低压差稳压器,适用于具有固定输出电压(3.3V),负载电流高达 400 mA 的 D²PAK、DPAK DPAK 封装。高达 40V 的输入电压调节为 V Q,nom 为 3.3V,精度为±2%。TLF80511TF V33 的典型静态电流为38μA,对于需要极低工作电流的系统来说,它就是理想的解决方案,例如永久连接电池的系统。当输出电流小于 100mA 时,它具有 100mV 的极低压差。此外,压差区域始于输入电压为 3.3 V 时(扩展操作范围)。因此,TLF80511TF V33 适用于汽车系统。此外,TLF80511TF V33 的新型快速调节理念仅需一个 1μF 的输出电容即可保持电压稳定。;型号: | TLF80511TF V33 |
厂家: | Infineon |
描述: | TLF80511TF V33 是一款线性低压差稳压器,适用于具有固定输出电压(3.3V),负载电流高达 400 mA 的 D²PAK、DPAK DPAK 封装。高达 40V 的输入电压调节为 V Q,nom 为 3.3V,精度为±2%。TLF80511TF V33 的典型静态电流为38μA,对于需要极低工作电流的系统来说,它就是理想的解决方案,例如永久连接电池的系统。当输出电流小于 100mA 时,它具有 100mV 的极低压差。此外,压差区域始于输入电压为 3.3 V 时(扩展操作范围)。因此,TLF80511TF V33 适用于汽车系统。此外,TLF80511TF V33 的新型快速调节理念仅需一个 1μF 的输出电容即可保持电压稳定。 电池 稳压器 |
文件: | 总20页 (文件大小:1754K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TLF80511TF
Low Dropout Linear Fixed Voltage Regulator
TLF80511TFV50
TLF80511TFV33
Data Sheet
Rev. 1.0, 2014-01-28
Automotive Power
TLF80511TF
Table of Contents
1
2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment PG-TO252-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions PG-TO252-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1
4.2
4.3
5
Block Description and Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Voltage Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Performance Characteristics Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Performance Characteristics Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1
5.2
5.3
5.4
6
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Selection of External Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.5
7
8
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Data Sheet
2
Rev. 1.0, 2014-01-28
Low Dropout Linear Fixed Voltage Regulator
TLF80511TF
1
Overview
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Output Voltage 5 V and 3.3 V
Output Voltage Precision ±2 %
Output Current up to 400 mA
Ultra Low Current Consumption 38 µA
Very Low Dropout Voltage: 100 mV at 100 mA Output Current
Extended Operating Range Starting at 3.3 V
Small Output Capacitor 1 µF
Output Current Limitation
Overtemperature Shutdown
Suitable for Use in Automotive Electronics
Wide Temperature Range from -40 °C up to 150 °C
Green Product (RoHS compliant)
AEC Qualified
PG-TO252-3
Description
The TLF80511TF is a linear low dropout voltage regulator for load currents up to 400 mA. An input voltage of up
to 40 V is regulated to VQ,nom = 5 V (TLF80511TFV50) or VQ,nom = 3.3 V (TLF80511TFV33) with ±2 % precision.
The TLF80511TF with a typical quiescent current of 38 µA, is the ideal solution for systems requiring very low
operating currents, such as those permanently connected to a battery.
It features a very low dropout voltage of 100 mV, when the output current is less than 100 mA. In addition, the
dropout region begins at input voltages of 3.3 V (extended operating range). This makes the TLF80511TF suitable
to supply automotive systems.
In addition, the TLF80511’s new fast regulation concept requires only a single, 1 µF output capacitor to maintain
stable regulation.
The device is designed for the harsh environment of automotive applications. Therefore standard features like
output current limitation and overtemperature shutdown are implemented and protect the device against failures
like output short circuit to GND, over-current and over-temperatures. The TLF80511TF can be also used in all
other applications requiring a stabilized 5 V or 3.3 V supply voltage.
Type
Package
Marking
80511V5
80511V3
TLF80511TFV50
TLF80511TFV33
PG-TO252-3
PG-TO252-3
Data Sheet
3
Rev. 1.0, 2014-01-28
TLF80511TF
Block Diagram
2
Block Diagram
I
Q
Current
Limitation
Bandgap
Reference
Temperature
Shutdown
GND
Figure 1
Block Diagram
Data Sheet
4
Rev. 1.0, 2014-01-28
TLF80511TF
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment PG-TO252-3
GND
2
GND
1
3
I
Q
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions PG-TO252-3
Pin
Symbol
Function
Input
1
I
for compensating line influences, a capacitor to GND close to the IC terminals is
recommended
2
3
GND
Q
Ground
Output
block to GND with a capacitor close to the IC terminals, respecting the values given
for its capacitance CQ and ESR in the table “Functional Range” on Page 7
Tab
GND
Heat Slug
connect to heatsink area;
connect with GND on PCB
Data Sheet
5
Rev. 1.0, 2014-01-28
TLF80511TF
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Table 1
Absolute Maximum Ratings 1)
Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Parameter
Symbol
Values
Typ.
Unit Note /
Test Condition
Number
Min.
-0.3
-0.3
Max.
45
Input I
Voltage
VI
–
–
V
V
–
P_4.1.1
P_4.1.2
Output Q
Voltage
VQ
7
–
Temperature
Junction Temperature
Storage Temperature
ESD Susceptibility
ESD Susceptibility
ESD Susceptibility
Tj
-40
-55
–
–
150
150
°C
°C
–
–
P_4.1.3
P_4.1.4
Tstg
VESD
VESD
-4
–
–
4
kV
kV
HBM2)
CDM3)
P_4.1.5
P_4.1.6
-1.5
1.5
1) Not subject to production test, specified by design.
2) ESD susceptibility, HBM according to ANSI/ESDA/JEDEC JS001 (1.5k Ω, 100 pF)
3) ESD susceptibility, Charged Device Model “CDM” according JEDEC JESD22-C101
Note:Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note:Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Data Sheet
6
Rev. 1.0, 2014-01-28
TLF80511TF
General Product Characteristics
4.2
Functional Range
Table 2
Functional Range
Parameter
Symbol
Values
Typ. Max.
Unit
Note /
Test Condition
Number
Min.
Input Voltage Range for Normal
Operation
VI
V
Q,nom + Vdr
–
40
V
–
P_4.2.1
Extended Input Voltage Range
VI,ext
3.3
1
–
–
40
–
V
Tj > 25 °C1)
P_4.2.2
P_4.2.3
2)
Output Capacitor’s Requirements CQ
µF
–
for Stability
3)
Output Capacitor’s Requirements ESR(CQ)
for Stability
–
–
–
5
Ω
–
P_4.2.4
P_4.2.5
Junction Temperature
Tj
-40
150
°C
–
1) Between min. value and VQ,nom + Vdr: VQ = VI - Vdr. Below min. value: VQ = 0 V
2) the minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%
3) relevant ESR value at f = 10 kHz
Note:Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
4.3
Thermal Resistance
Note:This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go
to www.jedec.org.
Table 3
Thermal Resistance
Parameter
Symbol
Values
Typ.
Unit
Note /
Test Condition
Number
Min.
Max.
Package Version PG-TO252-3
Junction to Case1)
RthJC
RthJA
RthJA
RthJA
–
–
–
–
4
–
–
–
–
K/W
K/W
K/W
K/W
–
2)
P_4.3.1
P_4.3.2
P_4.3.3
Junction to Ambient
27
95
52
Junction to Ambient
footprint only3)
300 mm2 heatsink P_4.3.4
area on PCB3)
Junction to Ambient
Junction to Ambient
RthJA
–
39
–
K/W
600 mm2 heatsink P_4.3.5
area on PCB3)
1) Not subject to production test, specified by design
2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm³ board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
Where applicable a thermal via array under the exposed pad contacted the first inner copper layer.
3) Specified RthJA value is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board; The Product
(Chip+Package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 x 70µm Cu).
Data Sheet
7
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
5
Block Description and Electrical Characteristics
5.1
Voltage Regulation
The output voltage VQ is divided by a resistor network. This fractional voltage is compared to an internal voltage
reference and drives the pass transistor accordingly.
The control loop stability depends on the output capacitor CQ, the load current, the chip temperature and the
internal circuit design. To ensure stable operation, the output capacitor’s capacitance and its equivalent series
resistor ESR requirements given in Table 2 “Functional Range” on Page 7 must be maintained. For details see
the typical performance graph “Stability Region: Equivalent Serial Resistor ESR versus Output Current IQ”
on Page 11. Since the output capacitor is used to buffer load steps, it should be sized according to the
application’s needs.
An input capacitor CI is not required for stability, but is recommended to compensate line fluctuations. An
additional reverse polarity protection diode and a combination of several capacitors for filtering should be used.
Connect the capacitors close to the regulator terminals.
Whenever the load current exceeds the specified limit, e.g. in case of a short circuit, the output current is limited
and the output voltage decreases.
The overtemperature shutdown circuit prevents the IC from immediate destruction under fault conditions (e.g.
output continuously short-circuited) by switching off the power stage. After the chip has cooled, the regulator
restarts. This oscillatory thermal behaviour causes the junction temperature to exceed the 150° C maximum and
significantly reducing the IC’s life.
Regulated
Output Voltage
Supply
IQ
II
I
Q
Current
Limitation
C
LOAD
Bandgap
Reference
CI
VI
VQ
ESR
CQ
Temperature
Shutdown
GND
ApplicationDiagram.vsd
Figure 3
Block Diagram Voltage Regulation
Data Sheet
8
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
Table 4
Electrical Characteristics Voltage Regulator 5 V and 3.3 V version
VI = 13.5 V; Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Parameter
Symbol
Values
Unit Note / Test Condition Number
Min. Typ. Max.
Output Voltage Precision
TLF80511TFV50
VQ
4.9
5.0
5.1
V
V
V
V
0.05 mA < IQ < 400 mA P_5.1.1
6 V < VI < 28 V
Output Voltage Precision
TLF80511TFV50
VQ
4.9
5.0
5.1
0.05 mA < IQ < 200 mA P_5.1.2
5.5 V < VI < 40 V
Output Voltage Precision
TLF80511TFV33
VQ
3.23 3.3
3.23 3.3
3.37
3.37
0.05 mA < IQ < 400 mA P_5.1.3
4.4 V < VI < 28 V
Output Voltage Precision
TLF80511TFV33
VQ
0.05 mA < IQ < 200 mA P_5.1.4
3.9 V < VI < 40 V
Output Current Limitation
IQ,max
401
600
20
900
50
mA
mV
0 V < VQ < 4.8 V
P_5.1.5
Load Regulation
steady-state
|∆VQ,load| –
IQ = 0.05 mA to 400 mA P_5.1.6
VI = 6 V
Line Regulation
steady-state
Dropout Voltage1)
Vdr = VI - VQ
TLF80511TFV50
|∆VQ,line|
Vdr
–
–
10
30
mV
mV
VI = 8 V to 32 V
IQ = 5 mA
P_5.1.7
250
500
IQ = 250 mA
IQ = 100 mA
IQ = 250 mA
IQ = 100 mA
P_5.1.8
Dropout Voltage
Vdr = VI - VQ
TLF80511TFV50
Vdr
Vdr
Vdr
–
–
–
100
320
130
–
mV
mV
mV
P_5.1.9
Dropout Voltage
Vdr = VI - VQ
TLF80511TFV33
650
–
P_5.1.10
P_5.1.11
Dropout Voltage
Vdr = VI - VQ
TLF80511TFV33
Power Supply Ripple Rejection2) PSRR
TLF80511TFV50
–
55
–
dB
°C
K
f
ripple = 100 Hz
P_5.1.12
P_5.1.13
P_5.1.14
Vripple = 0.5 Vpp
Overtemperature Shutdown
Threshold
Tj,sd
151
–
175
15
200
–
Tj increasing2)
Tj decreasing2)
Overtemperature Shutdown
Threshold Hysteresis
Tj,sdh
1) Measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5V
2) Not subject to production test, specified by design
Data Sheet
9
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
5.2
Typical Performance Characteristics Voltage Regulator
Typical Performance Characteristics
Output Voltage VQ versus
Dropout Voltage Vdr versus
Junction Temperature Tj (TLF80511TFV50)
Junction Temperature Tj (TLF80511TFV50)
5,20
400
VI = 13.5 V
IQ = 200 mA
5,15
5,10
5,05
5,00
4,95
4,90
4,85
4,80
350
I
Q = 250 mA
300
250
200
150
100
50
I
Q = 100 mA
I
Q = 10 mA
80
0
-40
0
40
80
120
160
-40
0
40
120
160
T
j [°C]
T
j [°C]
Dropout Voltage Vdr versus
Output Current IQ (TLF80511TFV50)
Maximum Output Current IQ versus
Input Voltage VI (TLF80511TFV50)
600
700
VQ= 4.8 V
600
500
400
300
200
100
0
500
T
j = 125 °C
Tj = 150 °C
Tj = 25 °C
Tj = -40 °C
400
300
200
100
0
T
j = 25 °C
0
10
20
30
40
0
100
200
300
400
IQ [mA]
V
I [V]
Data Sheet
10
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
Load Regulation ΔVQ,load versus
Output Current Change ΔIQ
Line Regulation ΔVQ,line versus
Input Voltage ∆VI
2
8
IQ = 5 mA
VI = 13.5 V
Tj = 25 °C
6
0
-2
Tj = -40 °C
Tj = 150 °C
4
2
0
Tj = 25 °C
-4
-6
Tj = -40 °C
Δ
Δ
-2
-8
-4
-6
-8
-10
-12
0
100
200
300
400
0
10
20
30
40
ΔIQ [mA]
ΔVI [V]
Power Supply Ripple Rejection versus
Frequency (TLF80511TFV50)
Stability Region: Equivalent Serial Resistor ESR
versus Output Current IQ
100
70
C
Q = 1 µF
I
C
Q = 10 mA
Q = 1 µF
VI = 6..28 V
60
50
40
30
20
10
0
V
I = 13.5 V
Vripple = 0.5 Vpp
Unstable
Region
Tj = 25 °C
10
1
Stable
Region
0,1
0,01
0
100
200
300
400
0,01
0,1
1
10
100
1000
f
[kHz]
IQ [mA]
Data Sheet
11
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
Output Voltage VQ versus
Input Voltage VI (TLF80511TFV50)
6
I
Q = 100 mA
Tj = 25°C
5
4
3
2
1
0
0
2
4
6
V
I [V]
Data Sheet
12
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
5.3
Current Consumption
Table 5
Electrical Characteristics Current Consumption
VI = 13.5 V; Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Parameter
Symbol
Values
Typ.
38
Unit
Note / Test Condition Number
Min.
Max.
Current Consumption
Iq = II - IQ
Iq
Iq
Iq
–
46
µA
µA
µA
IQ = 0.05 mA
Tj < 25 °C
P_5.3.1
P_5.3.2
P_5.3.3
Current Consumption
Iq = II - IQ
–
–
–
75
80
IQ = 0.05 mA
Tj < 125 °C
Current Consumption
Iq = II - IQ
67
IQ = 400 mA
Tj < 125 °C1)
1) Not subject to production test, specified by design.
Data Sheet
13
Rev. 1.0, 2014-01-28
TLF80511TF
Block Description and Electrical Characteristics
5.4
Typical Performance Characteristics Current Consumption
Typical Performance Characteristics
Current Consumption Iq versus
Output Current IQ
Current Consumption Iq versus
Input Voltage VI
100
VI = 13.5 V
RLOAD = 100 Ω
Tj = 25 °C
90
80
70
60
50
40
30
20
10
0
58
52
46
40
34
28
22
T
j = 150 °C
Tj = 25 °C
T
j = -40 °C
0
10
20
30
40
0
100
200
300
400
V
I [V]
IQ [mA]
Data Sheet
14
Rev. 1.0, 2014-01-28
TLF80511TF
Application Information
6
Application Information
6.1
Application Diagram
Supply
Regulated Output Voltage
I
Q
Load
e. g.
DI1
Micro
Controller
Current
Limitation
XC22xx
CQ
DI2
CI2
CI1
1µF
(ESR<5ꢀ)
100nF
<45V
10µF
Bandgap
Reference
GND
Temperature
Shutdown
GND
Figure 4
Application Diagram
6.2
Selection of External Components
6.2.1
Input Pin
The typical input circuitry for a linear voltage regulator is shown in the application diagram above.
A ceramic capacitor at the input, in the range of 100nF to 470nF, is recommended to filter out the high frequency
disturbances imposed by the line e.g. ISO pulses 3a/b. This capacitor must be placed very close to the input pin
of the linear voltage regulator on the PCB.
An aluminum electrolytic capacitor in the range of 10µF to 470µF is recommended as an input buffer to smooth
out high energy pulses, such as ISO pulse 2a. This capacitor should be placed close to the input pin of the linear
voltage regulator on the PCB.
An overvoltage suppressor diode can be used to further suppress any high voltage beyond the maximum rating
of the linear voltage regulator and protect the device against any damage due to over-voltage above 45 V.
The external components at the input are not mandatory for the operation of the voltage regulator, but they are
recommended in order to protect the voltage regulator against external disturbances and damages.
6.2.2
Output Pin
An output capacitor is mandatory for the stability of linear voltage regulators.
The requirement to the output capacitor is given in “Functional Range” on Page 7. The graph “Stability Region:
Equivalent Serial Resistor ESR versus Output Current IQ” on Page 11 shows the stable operation range of
the device.
TLF80511TF is designed to be stable with extremely low ESR capacitors. According to the automotive
requirements, ceramic capacitors with X5R or X7R dielectrics are recommended.
The output capacitor should be placed as close as possible to the regulator’s output and GND pins and on the
same side of the PCB as the regulator itself.
Data Sheet
15
Rev. 1.0, 2014-01-28
TLF80511TF
Application Information
In case of rapid transients of input voltage or load current, the capacitance should be dimensioned in accordance
and verified in the real application that the output stability requirements are fulfilled.
6.3
Thermal Considerations
Knowing the input voltage, the output voltage and the load profile of the application, the total power dissipation
can be calculated:
PD = (VI - VQ) × IQ + VI × Iq
(1)
with
•
•
•
•
•
PD: continuous power dissipation
VI : input voltage
VQ: output voltage
IQ: output current
Iq: quiescent current
The maximum acceptable thermal resistance RthJA can then be calculated:
RthJA,max = ( Tj,max - Ta ) / PD
(2)
with
•
•
T
j,max: maximum allowed junction temperature
Ta: ambient temperature
Based on the above calculation the proper PCB type and the necessary heat sink area can be determined with
reference to the specification in “Thermal Resistance” on Page 7.
Example
Application conditions:
VI = 13.5V
VQ = 5V
IQ = 150mA
Ta = 85°C
Calculation of RthJA,max
:
PD = (VI – VQ) × IQ + VI × Iq
= (13.5V – 5V) × 150mA
= 1.275W
(VI × Iq can be neglected because of very low Iq)
RthJA,max = (Tj,max – Ta) / PD
= (150°C – 85°C) / 1.275W = 50.98K/W
As a result, the PCB design must ensure a thermal resistance RthJA lower than 50.98 K/W. According to “Thermal
Resistance” on Page 7, at least 600 mm2 heatsink area is needed on the FR4 1s0p PCB, or the FR4 2s2p board
can be used.
Data Sheet
16
Rev. 1.0, 2014-01-28
TLF80511TF
Application Information
6.4
Reverse Polarity Protection
TLF80511TF is not self protected against reverse polarity faults and must be protected by external components
against negative supply voltage. An external reverse polarity diode is needed. The absolute maximum ratings of
the device as specified in “Absolute Maximum Ratings” on Page 6 must be kept.
6.5
Further Application Information
•
For further information you may contact http://www.infineon.com/
Data Sheet
17
Rev. 1.0, 2014-01-28
TLF80511TF
Package Outlines
7
Package Outlines
+0.15
6.5
5.4
-0.05
+0.05
-0.10
A
2.3
±0.1
+0.08
B
(5)
0.5
-0.04
+0.20
-0.01
0.9
0...0.15
0.15 MAX.
per side
3x
0.75
+0.08
-0.04
0.5
±0.1
2.28
0.1 B
4.57
M
0.25
A B
All metal surfaces tin plated,
except area of cut.
GPT09277
Figure 5
PG-TO252-3
Data Sheet
18
Rev. 1.0, 2014-01-28
TLF80511TF
Revision History
8
Revision History
Revision
Date
Changes
1.0
2014-01-28
Data Sheet - Initial version
Data Sheet
19
Rev. 1.0, 2014-01-28
Edition 2014-01-28
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2014 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
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