參數(shù)資料
型號(hào)： TPS5401DGQT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝： PLASTIC, MSOP-10
文件頁數(shù)： 14/41頁
文件大?。?/td> 1149K
代理商： TPS5401DGQT
10
20
30
40
2500
2000
1500
1000
500
0
f
–
Switching
Frequency
–
kHz
SW
V
– Input Voltage – V
IN
V
= 5 V
OUT
Shift
Skip
TPS5401
Clock
Source
PLL
RT
RT/CLK
www.ti.com
SLVSAB0 – DECEMBER 2010
DETAILED DESCRIPTION (continued)
IL
Inductor current
Rdc
Inductor resistance
VIN
Maximum input voltage
VOUT
Output voltage
VOUTSC
Output voltage during short
Vd
Diode voltage drop
rDS(on)
Switch on resistance
tON
Controllable on-time
DIV
Frequency divide equals (1, 2, 4, or 8)
Figure 38. Maximum Switching Frequency vs. Input Voltage
How to Interface to RT/CLK Pin
The RT/CLK pin can be used to synchronize the regulator to an external system clock. To implement the
synchronization feature connect a square wave to the RT/CLK pin as shown in Figure 39. The square-wave
amplitude must transition lower than 0.5 V and higher than 2.2 V on the RT/CLK pin and have an on-time greater
than 40 ns and an off-time greater than 40 ns. The synchronization frequency range is 300 kHz to 2200 kHz. The
rising edge of the PH signal is synchronized to the falling edge of the RT/CLK pin signal.
Figure 39. Synchronizing to a System Clock
Copyright 2010, Texas Instruments Incorporated
21
Product Folder Link(s): TPS5401
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TPS54020EVM-082 功能描述:電源管理IC開發(fā)工具 TPS54020 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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