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參數資料
型號: TPS54160DGQR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: 2.7 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝: GREEN, PLASTIC, MSOP-10
文件頁數: 7/50頁
文件大小: 1375K
代理商: TPS54160DGQR
EN
Ihys
VIN
+
-
TPS54160
R 1
R 2
VOUT
R3
I1
0.9
A
m
2.9
A
m
1.25V
START
STOP
OUT
HYS
V
R1
V
I
R3
-
=
+
ENA
START
ENA
1
V
R2
V
I
R1
R3
=
-
+ -
VIN
R1
R2
Node
5.8V
10kohm
ENA
www.ti.com
SLVS795C – OCTOBER 2008 – REVISED OCTOBER 2010
DETAILED DESCRIPTION (continued)
Another technique to add input voltage hysteresis is shown in Figure 29. This method may be used, if the
resistance values are high from the previous method and a wider voltage hysteresis is needed. The resistor R3
sources additional hysteresis current into the EN pin.
Figure 29. Adding Additional Hysteresis
(4)
(5)
Do not place a low-impedance voltage source with greater than 5 V directly on the EN pin. Do not place a
capacitor directly on the EN pin if VEN > 5 V when using a voltage divider to adjust the start and stop voltage.
The node voltage, (see Figure 30) must remain equal to or less than 5.8 V. The zener diode can sink up to 100
A. The EN pin voltage can be greater than 5 V if the VIN voltage source has a high impedance and does not
source more than 100 A into the EN pin.
Figure 30. Node Voltage
Copyright 2008–2010, Texas Instruments Incorporated
15
Product Folder Link(s): TPS54160
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