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PDF TLF4277-2 Data sheet ( Hoja de datos )
| Número de pieza | TLF4277-2 | |
| Descripción | Low Drop Out Linear Voltage Regulator | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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TLF4277-2
Low Drop Out Linear Voltage Regulator
Integrated Current Monitor
Data Sheet
Rev. 1.0, 2014-03-13
Automotive Power
1 page  
3 Pin Configuration
3.1 Pin Assignment
TLF4277-2
Pin Configuration
I
n.c.
n.c.
EN
n.c.
n.c.
CSO
1 SSOP-14 14
2 13
3 12
4 11
5 10
69
78
Figure 2 Pin Configuration (top view)
3.2 Pin Definitions and Functions
Q
n.c.
ADJ
n.c.
GND
n.c.
ST
Pin Symbol
1I
4 EN
7 CSO
8 ST
10 GND
12 ADJ
14 Q
PAD
2,3,5,6 n.c.
9,11,13 n.c.
Data Sheet
Function
IC Supply
Place a capacitor from I to GND close to the IC for compensating line influences.
Enable
High signal enables the regulator;
Low signal disables the regulator;
Connect to I, if the Enable function is not needed
Current Sense Out
Current monitor and status output
Status Output
Digital output signal with open collector output.
A low signal indicates fault conditions at the regulator‘s output.
Ground
Voltage Adjust
Connect an external voltage divider to configure the output voltage
Regulator Output
Connect a capacitor between Q and GND close to the IC pins, respecting the values
given for its capacitance CQ and ESR in the table Chapter 4.2
Heat sink
Connect to PCB heat sink area and GND
Not Connected
Internally not connected; Connect to PCB GND
Not Connected
Internally not connected; Connect to PCB GND
5 Rev. 1.0, 2014-03-13
5 Page 
TLF4277-2
Voltage Regulator
5.4 Typical Performance Characteristics Voltage Regulator
Reference Voltage VREF,int vs.
Junction Temperature Tj
1.30
1.25
1.20
Output Capacitor Series Resistivity ESRCQ
vs. Output Current IQ
100
Unstable
Region
10
CQ = 1 µF
VI = 6..28 V
Tj = 25°
Stable
Region
1
1.15 0.1
1.10
-40
0
40 80 120 160
Tj [°C]
Dropout Voltage Vdr vs.
Junction Temperature Tj
300
250
IQ = 200 mA
200
150
IQ = 100 mA
100
50
0
-40
0 40 80 120 160
Tj [°C]
0.01
0
100 200
IQ [mA]
Power Supply Ripple Rejection PSRR
300
100
IQ = 10 mA
CQ = 1 µF
VQ = 5V
80
Vripple = 0.5 Vpp
Tj = 25 °C
60
40
20
0
10
100 1000 10000 100000 1000000
f [Hz]
Data Sheet
11 Rev. 1.0, 2014-03-13
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet TLF4277-2.PDF ] | |
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