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PDF TLE42644 Data sheet ( Hoja de datos )
| Número de pieza | TLE42644 | |
| Descripción | Low Dropout Fixed Voltage Regulator | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TLE42644 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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TLE42644
Low Dropout Fixed Voltage Regulator
TLE42644G
Data Sheet
Rev. 1.1, 2014-07-03
Automotive Power
1 page  
4 General Product Characteristics
TLE42644
General Product Characteristics
4.1 Absolute Maximum Ratings
Table 1 Absolute Maximum Ratings1)
Tj = -40 °C to 150 °C; all voltages with respect to ground, (unless otherwise specified)
Parameter
Symbol
Values
Unit Note /
Min. Typ. Max.
Test Condition
Input I
Voltage
Output Q
VI
-30 –
45 V –
Voltage
Temperature
VQ
-0.3 –
32 V –
Junction temperature
Storage temperature
ESD Susceptibility
Tj
-40 –
150 °C
–
Tstg
-50 –
150 °C
–
ESD Absorption
VESD,HBM
-3
–
3
kV Human Body
Model (HBM)2)
ESD Absorption
VESD,CDM
-1500 –
1500 V
Charge Device
Model (CDM)3) at
all pins
1) not subject to production test, specified by design
2) ESD susceptibility Human Body Model “HBM” according to AEC-Q100-002 - JESD22-A114
3) ESD susceptibility Charged Device Model “CDM” according to ESDA STM5.3.1
Number
P_4.1.1
P_4.1.2
P_4.1.3
P_4.1.4
P_4.1.5
P_4.1.6
Notes
1. 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.
2. 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.
4.2 Functional Range
Table 2 Functional Range
Parameter
Symbol
Input voltage
Output Capacitor’s
Requirements for Stability
VI
CQ
Min.
5.5
10
Values
Typ. Max.
– 40
––
Unit
V
µF
Note /
Test Condition
–
–
Number
P_4.2.1
P_4.2.2
Data Sheet
5 Rev. 1.1, 2014-07-03
5 Page 
TLE42644
Application Information
TLE42644 is designed to be stable with extremely low ESR capacitors. According to the automotive environment,
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.
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 = T----j--,--m---P-a--x-D---–-----T----a
with
• Tj,max: maximum allowed junction temperature
• Ta: ambient temperature
(2)
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 6.
Example
Application conditions:
VI = 13.5 V
VQ = 5 V
IQ = 50 mA
Ta = 105 °C
Calculation of RthJA,max:
PD = (VI – VQ) • IQ + VI • Iq
= (13.5 V – 5 V) • 50 mA + 13.5 V • 4 mA
= 0.425 W + 0.054 W
= 0.479 W
Data Sheet
11 Rev. 1.1, 2014-07-03
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TLE42644.PDF ] | |
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