參數(shù)資料
型號： BU29TA2WHFV-TR
元件分類： 固定正電壓單路輸出LDO穩(wěn)壓器
英文描述： 2.9 V FIXED POSITIVE LDO REGULATOR, PDSO5
封裝： ROHS COMPLIANT, HVSOF-5
文件頁數(shù)： 26/30頁
文件大小： 1661K
代理商： BU29TA2WHFV-TR
Technical Note
5/29
BUTA2WNVX series, BUTA2WHFV series
www.rohm.com
2011.01 - Rev.C
2011 ROHM Co., Ltd. All rights reserved.
Fig.4 Stability area characteristics (Example)
●
Input/Output terminal equivalent circuit schematic
1pin (VOUT)
2pin (GND)
3pin (STBY)
4pin (VIN)
VIN
STBY
Fig.２ Input/Output equivalent circuit
●
About input/output capacitor
It is recommended to place a capacitor as close as possible to the
pins between the input terminal and GND or between the output
terminal and GND.
The capacitor between the input terminal and GND becomes valid
when source impedance increases or when wiring is long. The
larger the capacity of the output capacitor between the output
terminal and GND is, the better the stability and characteristics in
output load fluctuation become. However, please check the status
of actual implementation. Ceramic capacitors generally have
variation, temperature characteristics, and direct current bias
characteristics and the capacity value also decreases with time
depending on the usage conditions. It is recommended to select a
ceramic capacitor upon inquiring about detailed data of the related
manufacturer.
●
About the equivalent series resistance (ESR) of a ceramic capacitor
Capacitors generally have ESR (equivalent series resistance) and it
operates stably in the ESR-IOUT area shown on the right. Since
ceramic capacitors, tantalum capacitors, electrolytic capacitors, etc.
generally have different ESR, please check the ESR of the
capacitor to be used and use it within the stability area range shown
in the right graph for evaluation of the actual application.
VOUT
VIN
Fig.3 Capacity – bias characteristics
Capacity value of ceramic capacitor - DC bias characteristics
(
Example)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
00.5
1
1.5
22.53
3.54
DC Bias Voltage [V]
C
apac
itanc
e
C
hange
[
%
]
10-V withstand voltage
B1characteristics
GRM188B11A105KA61D
10-V withstand voltage
B characteristics
6.3-V withstand voltage
B characteristics
4-V withstand voltage
X6S characteristics
10-V withstand voltage
F characteristics
10-V withstand voltage
F characteristics
0.01
0.1
1
10
100
0
50
100
150
200
IOUT [mA]
ESR
[
]
Stability area
Unstable area
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BU29TA2WNVX 制造商:ROHM 制造商全稱:Rohm 功能描述:1ch 200mA CMOS LDO Regulators
BU29TA2WNVX-TR 功能描述:低壓差穩(wěn)壓器 - LDO High-Speed Load CMOS 2.9V Out 200mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
BU29TD2WNVX 制造商:ROHM 制造商全稱:Rohm 功能描述:1ch 200mA CMOS LDO Regulators
BU29TD2WNVX-TL 功能描述:Linear Voltage Regulator IC Positive Fixed 1 Output 2.9V 200mA SSON004X1010 制造商:rohm semiconductor 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 穩(wěn)壓器拓?fù)?正，固定式 電壓 - 輸出:2.9V 電流 - 輸出:200mA 電壓 - 跌落（典型值）:0.24V @ 200mA 穩(wěn)壓器數(shù):1 電壓 - 輸入:最高 6V 電流 - 限制（最小值）:220mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-UDFN 裸露焊盤 供應(yīng)商器件封裝:SSON004X1010 標(biāo)準(zhǔn)包裝:1
BU29TD3WG-TR 功能描述:低壓差穩(wěn)壓器 - LDO Standard CMOS LDO Vreg; 2.9V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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