參數(shù)資料
型號(hào)： SP6641BEK-50TR
英文描述： MS3120E20-39PXF0
中文描述： 堿性500mA的DC / DC升壓穩(wěn)壓器采用SOT - 23
文件頁(yè)數(shù)： 10/13頁(yè)
文件大小： 120K
代理商： SP6641BEK-50TR
10
Rev. 3/5/02, *Patent Pending
SP6641A/6641B 500mA Alkaline DC/DC Boost Regulator in SOT-23
Copyright 2002 Sipex Corporation
APPLICATION INFORMATION: continued
TABLE 2. SP6641A Resistive Load Current in Startup - low cost inductors
GND
LX
V
BATT
J1
L1
22
μ
H
U1
SP6641
V
OUT
SHDN
C2
22
μ
F
V
+3.3V
D1
1
2
3
C1
22
μ
F
5
4
1
2
3
V
BATT
+0.9V to +3.3V Input
+
+
GND
ENABLE
V
OUT
SP6201
V
IN
RESET
1
2
3
5
4
V
+3.0V
C3
1
μ
F
Figure 15. SP6641A 3.3V Evaluation Board with SP6201 LDO Regulator
SP6641A APPLICATION CIRCUIT WITH PANASONIC INDUCTOR
L1 = ELJ-PB220KF 22
μ
H, IDCmax = 300mA, DCR = 1.0
SP6641A APPLICATION CIRCUIT WITH TDK INDUCTOR
L1 = NLC453232T-220K 22
μ
H, IDCmax = 370mA, DCR = 0.9
Startup
Load
R
OUT
(min)
16000
V
after
Startup
V
3.31
I
after
Startup
mA
0.2
Startup
then
Load
mA (max)
37
Startup
Load
R
OUT
(min)
16000
V
after
Startup
V
3.30
I
after
Startup
mA
0.2
Startup
then
Load
mA (max)
42
V
IN
V
0.86
V
IN
V
0.86
0.88
1500
3.31
2
39
0.88
1500
3.30
2
43
0.90
800
3.30
4
40
0.90
900
3.30
4
44
0.95
230
3.30
14
44
0.95
260
3.30
13
48
1.00
125
3.30
26
48
1.00
126
3.30
26
52
1.10
73
3.29
45
56
1.10
66
3.29
50
60
1.20
58
3.29
57
63
1.20
49
3.29
67
69
1.30
50
3.28
66
71
1.30
43
3.29
77
77
1.40
43
3.28
76
78
1.40
39
3.29
84
84
1.50
39
3.28
84
86
1.50
36
3.29
91
91
SuperCap Application on the
SP6641 Output
When the battery input to SP6641A is removed,
the SP6641A output will end up in the charge
mode and will slowly discharge a Supercap
connected to the output. The typical Supercap
of 0.22F will go from fully charged at 3.3V to
less than 2V in 5 minutes. The following appli-
cation circuit in figure 16 is recommended to
disconnect the SP6641 output from the SuperCap
when the battery is removed. The small SOT23-
3pin MOS switches are an inexpensive addition
to the SP6641 circuit and work well to maintain
SuperCap voltage to retain Non-Volatile CMOS
Memory while a battery is changed.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SP6641BEK-L-3-3 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-3-3/TR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 100mA Alkaline DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-5-0 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-5-0/TR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BKEB 功能描述:電源管理IC開(kāi)發(fā)工具 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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