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PDF TLD1326EL Data sheet ( Hoja de datos )
| Número de pieza | TLD1326EL | |
| Descripción | 3 Channel High Side Current Source | |
| Fabricantes | Infineon | |
| Logotipo |  |
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Infineon® LITIXTM Basic
TLD1326EL
3 Channel High Side Current Source
Data Sheet
Rev. 1.1, 2015-03-24
Automotive
1 page  
2 Block Diagram
VS
Internal
supply
EN
Thermal
protection
PWMI
N-1
Output
control
IN_SET Current
adjust
TLD1326EL
Figure 1 Basic Block Diagram
OUT3
OUT2
OUT1
DC /DC
control
FB GND
TLD1326EL
Block Diagram
Data Sheet
5 Rev. 1.1, 2015-03-24
5 Page 
TLD1326EL
EN Pin
5.2 Internal Supply Pin
The EN pin can be used to supply the internal logic. There are two typical application conditions, where this feature
can be used:
1) In “DC/DC control Buck” configurations, where the voltage Vs can be below 5.5V (see Figure 20 for details).
2) In configurations, where a PWM signal is applied at the Vbatt pin of a light module. The buffer capacitor CBUF is
used to supply the LITIXTM Basic IC during Vbatt low (Vs low) periods. This feature can be used to minimize the
turn-on time to the values specified in Pos. 10.2.13. Otherwise, the power-on reset delay time tPOR (Pos. 6.3.6)
has to be considered.
The capacitor can be calculated using the following formula:
CBUF = tLOW(max) ⋅ V-----S----–-----V---I--DE---1N----–(--L---VS---)-S---(--P---O----R---)
See also a typical application drawing in Chapter 11.
(1)
VBATT
D1
CBUF
VS
Internal
supply
EN
Thermal
protection
Output
control
RSET
IN_SET Current
adjust
BasLicITILXETMDBaDsirciver
OUT3
OUT2
OUT1
GND
GND
Figure 5 External circuit when applying a fast PWM signal on VBATT
Data Sheet
11 Rev. 1.1, 2015-03-24
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLD1326EL.PDF ] | |
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