參數(shù)資料
型號: TPS60310DGSG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 0.08 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO10
封裝: GREEN, PLASTIC, MSOP-10
文件頁數(shù): 6/24頁
文件大?。?/td> 530K
代理商: TPS60310DGSG4
TPS60310, TPS60311, TPS60312, TPS60313
SINGLE-CELL TO 3-V/3.3-V, 20-mA DUAL OUTPUT,
HIGH-EFFICIENCY CHARGE PUMP WITH SNOOZE MODE
SLVS362A – MAY 2001 – REVISED AUGUST 2001
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
design procedure
capacitor selection
The TPS6031X devices require only five external capacitors. Their values are closely linked to the required
output current and the output noise and ripple requirements. It is possible to only use 1-
F capacitors of the
same type.
The input capacitor improves system efficiency by reducing the input impedance and stabilizing the input
current.
The minimum required capacitance of the output capacitor (CO) that can be selected is 1 F. Depending on the
maximum allowed output ripple voltage, larger values can be chosen. Table 1 shows capacitor values
recommended for low output voltage ripple operation. A recommendation is given for the smallest size.
Table 1. Recommended Capacitor Values for Low-Output Voltage Ripple Operation
VIN
[V]
IO(OUT2)
[mA]
CIN
[
F]
CXF
[
F]
COUT
[
F]
VP–P
[mV]
AT 20 mA/
[V]
[mA]
CERAMIC
AT 20 mA/
VIN = 1.1 V
0.9...1.8
0
…20
1
16
0.9
…1.8
0
…20
1
2.2
10
0.9
…1.8
0
…20
1
10 // 0.1
6
Table 2. Recommended Capacitors
MANUFACTURER
PART NUMBER
SIZE
CAPACITANCE
TYPE
Taiyo Yuden
UMK212BJ104MG
LMK212BJ105KG
LMK212BJ225MG
JMK316BJ475KL
0805
1206
0.1
F
1
F
2.2
F
4.7
F
Ceramic
AVX
0805ZC105KAT2A
1206ZC225KAT2A
0805
1206
1
F
2.2
F
Ceramic
Table 3 lists the manufacturers of recommended capacitors. However, ceramic capacitors will provide the
lowest output voltage ripple due to their typically lower ESR.
Table 3. Recommended Capacitor Manufacturers
MANUFACTURER
CAPACITOR TYPE
INTERNET
Taiyo Yuden
X7R/X5R ceramic
www.t-yuden.com
AVX
X7R/X5R ceramic
www.avxcorp.com
Vishay
X7R/X5R ceramic
www.vishay.com
Kemet
X7R/X5R ceramic
www.kemet.com
TDK
X7R/X5R ceramic
www.component.tdk.com
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