參數(shù)資料
型號(hào)： TPS60502DGSRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.3 A SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3.05 X 4.98 MM, PLASTIC, MSOP-10
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 743K
代理商： TPS60502DGSRG4
TPS60500, TPS60501
TPS60502, TPS60503
SLVS391B OCTOBER 2001 REVISED FEBRUARY 2002
12
www.ti.com
DESIGN PROCEDURE
capacitor selection
Designed specifically for space-critical battery-powered applications, the complete converter requires only four
external capacitors. The capacitor values are closely linked to the required output current, output noise, and
ripple requirements. The input capacitor improves system efficiency by reducing the input impedance, and it
also stabilizes the input current. The value of the output capacitor, Co, influences the stability of the voltage
regulator. The minimum required capacitance for Co is 4.7 F. Depending on the maximum allowed output ripple
voltage and load current, larger values can be chosen. For an output current greater than 150 mA, a minimum
output capacitor of 22
F is required. Table 1 shows ceramic capacitor values recommended for low output
voltage ripple.
Table 1. Recommended Capacitors
MANUFACTURER
PART NUMBER
SIZE
CAPACITANCE
TYPE
Taiyo Yuden
LMK212BJ105KG
LMK212BJ225MG
EMK316BJ225KL
LMK316BJ475KL
JMK316BJ106KL
0805
1206
1
F
2.2
F
2.2
F
4.7
F
10
F
Ceramic
TDK
C2012X5R1C105M
C2012X5R1A225M
C2012X5R0J106M
0805
1
F
2.2
F
10
F/6.3 V
Ceramic
Table 2 contains a list of manufacturers of ceramic capacitors. Ceramic capacitors provide the lowest output
voltage ripple because they typically have the lowest ESR-rating.
Table 2. Recommended Capacitor Manufacturers
MANUFACTURER
CAPACITOR TYPE
INTERNET
Taiyo Yuden
X7R/X5R ceramic
www.tyuden.com
TDK
X7R/X5R ceramic
www.component.tdk.com
Vishay
X7R/X5R ceramic
www.vishay.com
Kemet
X7R/X5R ceramic
www.kemet.com
APPLICATION INFORMATION
typical application circuit for fixed voltage and adjustable voltage versions
Figure 26 shows the typical operation circuit. The TPS60501 to TPS60503 devices use an internal resistor
divider for sensing the output voltage. The FB pin must be connected externally with the output. For maximum
output current and best performance, 4 ceramic capacitors are recommended. For lower currents or higher
allowed output voltage ripple, other capacitors can also be used. It is recommended that the output capacitor
has a minimum value of 4.7
F. This value is necessary to maintain a stable operation of the system. Flying
capacitors lower than 1
F can be used, but this decreases the maximum output power. This means that the
device works in linear mode with lower output currents. The device works in the linear mode for an output current
of greater than 150 mA. With an output current greater than 150 mA, an output capacitor of
≥22 F must be used.
Figure 26 shows that two 10-
F capacitors can also be used in parallel.
相關(guān)PDF資料
PDF描述
TPS60500DGSR 0.3 A SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
TPS60500DGS 0.3 A SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
TPS60500DGSRG4 0.25 A SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
TPS60500DGSG4 0.3 A SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
TPS60503DGSG4 SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS60503 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH EFFICIENCY, 250-mA STEP-DOWN CHARGE PUMP
TPS60503DGS 功能描述:電荷泵 250-mA 1.5V Hi-Eff Step-Dwn Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS60503DGS 制造商:Texas Instruments 功能描述:IC CHARGE PUMP 1.5V SMD MSOP10
TPS60503DGSG4 功能描述:電荷泵 250-mA 1.5V Hi-Eff Step-Dwn Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS60503DGSR 功能描述:電荷泵 250-mA 1.5V Hi-Eff Step-Dwn Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
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