參數(shù)資料
型號: PTH04040WAST
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, DIP-20
文件頁數(shù): 4/22頁
文件大小: 747K
代理商: PTH04040WAST
Application Notes
For technical support and further information visit http://power.ti.com
PTH/PTV Series of Wide-Output Adjust
Power Modules (3.3/5-V Input)
Figure 3–6; Auto-Track Simultaneous Power Up Waveforms
VO1 =3.3 V
U1
+5 V
0 V
R1
698
1 %
PTH05010W
Track
VIN
VO
GND
Inhibit
Up
Dn
Sense
Adjust
C6
+
VO2 =2 V
U2
R2
4.12 k
1 %
PTH05010W
Track
VIN
VO
GND
Inhibit
Up
Dn
Sense
Adjust
C4
0.1 F
VCC
GND
SENSE
MR
CT
RESET
6
5
3
4
1
2
U3
TPS3808G50 *
C3
4700 pF
C2
C1
* Use TPS3808G33 with 3.3-V input bus modules.
C5
Figure 3–5; Simultaneous Power Up Using Auto-Track
Vin (1 V/Div)
Vo1 (1 V/Div)
Vo2 (1 V/Div)
HORIZ SCALE 10 ms/Div
5. The module is capable of both sinking and sourcing
current when following a voltage at its track input.
Therefore startup into an output prebias is not supported
when the module is under Auto-Track control. Note: A
pre-bias holdoff is not necessary when all supply voltages rise
simultaneously under the control of Auto-Track.
6. The Auto-Track function can be disabled by connecting
the Track pin to the input voltage (V
I). With Auto-Track
disabled, the output voltage will rise at a quicker and
more linear rate after input power is applied.
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