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參數(shù)資料
型號(hào): TPS40022PWPR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 0.01 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝: POWERPAD, PLASTIC, HTSSOP-16
文件頁數(shù): 4/29頁
文件大小: 337K
代理商: TPS40022PWPR
TPS40020
TPS40021
TPS40022
SLUS535 – MARCH 2003
www.ti.com
12
APPLICATION INFORMATION
Soft-Start and Shutdown
The soft-start and shutdown functions are common to the SS/SD pin. The voltage at this pin is the controlling
voltage sent to the error amplifier during startup. This reduces the transient current required to charge the output
capacitor at startup, and allows for a smooth startup with no overshoot of the output voltage. A shutdown feature
can be implemented as shown in Figure 5.
Switching Frequency
The switching frequency is programmed by a resistor from RT to SGND. Nominal switching frequency can by
calculated by:
R
T +
37.736
f
OSC
(kHz)
* 5.09 (kW)
0
200
0
200
100
300
500
400
600
400
800
1200
1000
f OS
C
Frequency
kHz
RT – Timing Resistance – k
VIN = 3.9 V
TIMING RESISTANCE
vs
SWITCHING FREQUENCY
Figure 5.
(2)
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS40040 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW PIN COUNT, LOW VIN (2.5 V TO 5.5 V) SYNCHRONOUS BUCK DC-TO-DC CONTROLLER WITH ENABLE
TPS40040DRBR 功能描述:DC/DC 開關(guān)控制器 Lo Vin Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40040DRBRG4 功能描述:DC/DC 開關(guān)控制器 Lo Vin Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40040DRBT 功能描述:DC/DC 開關(guān)控制器 Low Vin Synch Buck DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40040DRBT 制造商:Texas Instruments 功能描述:Peak Reflow Compatible (260 C):Yes
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