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參數(shù)資料
| 型號(hào)： | SP6641BEK-33TR |
| 英文描述： | 500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| 中文描述： | 堿性500mA的DC / DC升壓穩(wěn)壓器采用SOT - 23 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大小： | 120K |
| 代理商： | SP6641BEK-33TR |
9
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 1. COMPONENT SELECTION
INDUCTORS - SURFACE MOUNT
Inductor Specification
Isat
Size LxWxH
(A)
(mm)
0.90
5.7x5.5x3
0.70
6.6x4.5x2.9
0.37
4.4x3.2x3.2
0.42
4.5x3.2x2.6
1.30
5.7x5.5x3
1.10
6.6x4.5x2.9
1.70
5x5x4.7
Sipex
Part Number
SP6641A Ipk = .33A
SP6641A Ipk = .33A
SP6641A Ipk = .33A
SP6641A Ipk = .33A
SP6641B Ipk = 1A
SP6641B Ipk = 1A
SP6641B Ipk = 1A
Inductance
(
μ
H)
22
22
22
22
10
10
10
Manufacturer/
Part Number
Sumida CDRH5D28-220
Coilcraft DO1608C-223
TDK NLC453232T-220
Murata LQH43C220K04
Sumida CDRH5D28-100
Coilcraft DO1608C-103
Murata LQH55DN100M01 0.077
Series R
(
)
0.095
0.370
0.900
0.600
0.065
0.160
Inductor
Type
Manufacturer
Website
www.sumida.com
www.coilcraft.com
www.tdk.com
www.murata.com
www.sumida.com
www.coilcraft.com
www.murata.com
Shielded Ferrite Core
Unshielded Ferrite Core
Unshielded Ferrite Core
Unshielded Ferrite Core
Shielded Ferrite Core
Unshielded Ferrite Core
Unshielded Ferrite Core
SP6641B Ipk = 1A
SP6641B Ipk = 1A
22
22
Sumida CDRH6D28-220
Murata LQH55DN220M01 0.160
0.128
1.20
1.20
6.7x6.5x3
5x5x4.7
Shielded Ferrite Core
Unshielded Ferrite Core
www.sumida.com
www.murata.com
CAPACITORS - SURFACE MOUNT & THRU-HOLE
Capacitor Specification
ESR
(max)
(
)
Ripple
Current
@ 45
°
C (A)
4.00
1.20
2.70
Size
LxWxH
(mm)
1210
7343
8Dx10L
Sipex
Part Number
SP6641A Ipk = .33A
SP6641B Ipk = 1A
SP6641B Ipk = 1A
Capacitance
(
μ
F)
22
100
100
Manufacturer/
Part Number
TDK C3225X5R0J226M 0.010
SANYO 10TPA100M
SANYO 16SA100M
Voltage
(V)
6.3
6.3
16.0
Capacitor
Type
SMT X5R Cer.
SMT POSCAP Tant.
Thru-hole OS-CON
Manufacturer
Website
www.tdk.com
www.sanyovideo.com
www.sanyovideo.com
0.080
0.030
SCHOTTKY DIODE - SURFACE MOUNT
Diode Specification
Sipex
Part Number
SP6641A Ipk = .33A
SP6641B Ipk = 1A
Note: Components highlighted in
bold
are those used on the SP6641A or SP6641B Evaluation Board.
Manufacturer/
Part Number
STMicro STPS0520Z
Zetex ZCHS2000
VF @ IF
(V)
0.39
0.42
IF(AV)
(A)
0.50
2.00
Size LxWxH
(mm)
3.9x1.7x1.3
3x3x1.4
Reverse V
(V)
20
40
Package
Type
SOD-123
SOT23-6
Manufacturer
Website
www.st.com
www.zetex.com
Maximum Startup Current
It should be noted that for low input voltages the
SP6641 startup circuit can not support large
load currents at startup. In startup the SP6641
needs to boost the output from zero volts using
a charge pump which has a limited current
capacity. Once the output is greater than 1.7 to
1.9V the operate circuit takes over and the
SP6641 can supply much more current. Curves
of maximum resistive load current in startup for
the SP6641A and SP6641B are shown in Fig-
ures 13 & 14 and can be compared with Figure
2, maximum load current in operation. Also,
Table 2 provides SP6641A 3.3V resistive load
current in startup for some low cost 1812 size
chip inductors.
From the curves in Figures 13 and 14, you can
see that for low input voltages, the 22
μ
H induc-
tor has more current capacity at startup than the
10
μ
H inductor, due to more energy per charge
cycle in the relationship
1
/
2
LI
2
. Thus for 1 cell
applications, 22
μ
H is recommended for more
startup current than 10
μ
H.
For 1-cell battery applications, it is recommended
to apply any large load current after the SP6641
has started up, typically in a few millisecs. This
is typically not a problem in many applications
where the load is a processor whose load current
is low until the processor voltage comes up.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6641 | 500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| SP6641A | 500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| SP6641B | 500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| sp6641 | 500mA Alkaline DC/DC Boost Regulator in SOT-23(500mA堿性DC/DC升壓穩(wěn)壓器(SOT-23封裝)) |
| SP6641AEK-33TR | Circular Connector; No. of Contacts:3; Series:MS27466; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:9-98 RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6641BEK-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Noise Evaluation Board |
| SP6641BEK-5.0/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| SP6641BEK-5-0/TR | 功能描述:DC/DC 開關(guān)控制器 100mA Alkaline DC/DC 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 |
| SP6641BEK-50TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Alkaline DC/DC Boost Regulator in SOT-23 |
| SP6641BEK-L-3-3 | 功能描述:開關(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 |
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