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參數(shù)資料
| 型號(hào)： | TLE6389-3GV50 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.3 A SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, SOP-14 |
| 文件頁數(shù)： | 33/38頁 |
| 文件大?。?/td> | 1233K |
| 代理商： | TLE6389-3GV50 |
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TLE 6389
Datasheet Rev. 2.1
4
2007-08-13
1.5
Pin Definitions and Functions
Pin No
Symbol
Function
1
ENABLE Active-High enable input (only at adjustable version, TLE6389-2 GV)
for the device.
The device is shut down when ENABLE is driven low. In this shut down-
mode the reference, the output and the external MOSFET are turned off.
Connect to logic high for normal operation.
1
SI_ENA
BLE
Active-High enable input (only at 5V version, TLE6389-2 GV50 and
TLE6389-3 GV50) for SI_GND input.
SI_GND is switched to high impedance when SI_ENABLE is low. High
level at SI_ENABLE connects SI_GND to GND with low impedance. SO is
undefined when SI_ENABLE is low.
2
FB
Feedback input.
1. For adjustable version (-2GV) connect this pin to an external voltage
divider from the output to GND (see the determining the output voltage,
application section).
2. At the 5V fixed output voltage version (-3GV50 and -2GV50) the FB is
connected internally to an on-chip voltage divider. It does not have to be
connected externally to the output.
3
VOUT
Buck output voltage input.
Input for the internal supply. Connect always to the output of the buck
converter (output capacitor).
4
GND
Ground connection. Analog signal ground.
5
SYNC
Input for external frequency synchronization.
An external clock signal connected to this pin allows switching frequency
synchronization of the device. The internal oscillator is clocked then by the
frequency applied at the SYNC input.
6
SI_GND SI-Ground input.
Ground connection for SI comparator resistor divider. Depending on
SI_ENABLE this input is switched to high impedance or low ohmic to GND.
7
SI
Sense comparator input.
Input of the low-battery comparator. This input is compared to an internal
1.25V reference where SO gives the result of the comparison. Can be
used for any comparison, not necessarily as battery sense.
8
COMP
Compensation input.
Connect via RC-compensation network to GND.
9
SO
Sense comparator output.
Open drain output from SI comparator at the adjustable version (TLE6389-
2 GV),
Pull down structure with an internal 20k
pull up resistor to VOUT at the
5V version (TLE6389-2 GV50 and TLE6389-3 GV50).
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