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TLE6389 Datasheet(PDF) 3 Page - Infineon Technologies AG

Part # TLE6389
Description  Step-Down DC/DC Controller
Download  23 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLE6389 Datasheet(HTML) 3 Page - Infineon Technologies AG

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TLE 6389
Target Datasheet Rev. 1.7
3
2001-09-17
1SI_ENA
BLE
SI Enable Input. SI_GND is switched to high impedance when SI_Enable
is low. High level at SI_Enable connects SI_GND to GND via a low
impedance path. SO is undefined when SI_Enable is low. (TLE6389G50-
1, TLE6389G33-1 only)
13
VS
Supply Input. Bypass with 0.47µF.
4GND
Ground. Analog signal ground.
6SI_GND
SI Ground. Ground connection for SI comparator resistor devider.
11
BDS
Buck Driver Supply Input. Connect ceramic capacitor between BDS and
VS to generate clamped gate-source voltage to drive the PMOS power
stage.
14
CS
Current-Sense Input. Connect current-sense resistor between VS and
CS. External MOSFET is turned off when the voltage across the resistor
equals the current-limit trip level.
12
GDRV
Gate Drive Output for External P-Channel MOSFET. GDRV swings
between VS and BDS.
10
RO
Reset Output. Open drain output from reset comparator with an internal
pull up resistor.
8RD
Reset Delay. Connect a capacitor to ground for delay time adjustment.
9SO
Sense Output Comparator. Open drain output from SI comparator with
an internal pull up resistor.
7SI
Sense Input Comparator. Input to the Low-Battery Comparator. This
input is compared to an internal 1.25V reference.
5SYNC
Input for external synchronization. An external clock signal connected
to this pin allows for GDRV switching synchronization.
Pin No
SO-14
Symbol
Function


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