參數(shù)資料
型號(hào)： PM6680A
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
封裝： 5 X 5 MM, LEAD FREE, VFQFPN-32
文件頁(yè)數(shù)： 33/48頁(yè)
文件大?。?/td> 1932K
代理商： PM6680A
PM6680A
Design guidelines
39/48
9.7
Other parts design
●
VIN filter
A VIN pin low pass filter is suggested to reduce switching noise. The low pass filter is
shown in the next figure:
Figure 38.
VIN pin filter
Typical components values are: R = 3.9
and C = 4.7 F.
●
VCC filter
A VCC low pass filter helps to reject switching commutations noise:
Figure 39.
Inductor current waveforms
Typical components values are: R = 47
and C = 1F.
●
VREF capacitor
A 10nF to 100nF ceramic capacitor on VREF pin must be added to ensure noise
rejection.
●
LDO5 output capacitors
Bypass the output of each linear regulator with 1
F ceramic capacitor closer to the
LDO pin and a 4.7
F tantalum capacitor (ESR = 2 ). In most applicative conditions a
4.7
F ceramic output capacitor can be enough to ensure stability.
●
Bootstrap circuit
The external bootstrap circuit is represented in the next figure:
V
VIIN
N
1
10
00
0p
pF
F
R
Input
voltage
C
V
VC
CC
C
R
C
L
LD
DO
O5
5
相關(guān)PDF資料
PDF描述
PM6680TR 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6680ATR 功能描述:DC/DC 開關(guān)控制器 Dual sync 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
PM6680TR 功能描述:DC/DC 開關(guān)控制器 No Rsense dual StepDwn 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
PM6681A 功能描述:DC/DC 開關(guān)控制器 Dual Synch CTRLR Adj Voltage LDO 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
PM6681A_08 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual synchronous step-down controller with adjustable LDO
PM6681ATR 功能描述:DC/DC 開關(guān)控制器 DUAL STEP-DOWN CONTROLLER W/ADJ LDO 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
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