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參數(shù)資料
| 型號(hào)： | MAX1896 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1.4MHz SOT23 Current-Mode Step-Up DC-DC Converter |
| 中文描述： | 1.4MHz、SOT23封裝、電流模式升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 755K |
| 代理商： | MAX1896 |
M
Application Circuits
1-Cell to 3.3V SEPIC Power Supply
Figure 4 shows the MAX1896 in a single-ended primary
inductance converter (SEPIC) topology. This topology
is useful when the input voltage can be either higher or
lower than the output voltage, such as when converting
a single lithium-ion (Li+) cell to a 3.3V output. L1 and
L2 are two windings on a single inductor or two sepa-
rate inductors. The coupling capacitor between these
two windings must be a low-ESR type to achieve maxi-
mum efficiency, and must also be able to handle high
ripple currents. Ceramic capacitors are best for this
application.
Layout Procedure
Good PC board layout and routing are required in high-
frequency switching power supplies to achieve good
regulation, and stability. It is strongly recommended
that the evaluation kit PC board layouts be followed as
closely as possible. Refer to the MAX1896 EV kit for a
good layout. Place power components as close togeth-
er as possible, keeping their traces short, direct, and
wide. Avoid interconnecting the ground pins of the
power components using vias through an internal
ground plane. Instead, keep the power components
close together and route them in a star ground configu-
ration using component side copper, then connect the
star ground to internal ground using multiple vias.
1.4MHz SOT23 Current-Mode
Step-Up DC-DC Converter
8
_______________________________________________________________________________________
Figure 1. Typical Application Circuit
LX
IN
V
IN
2.6V TO 4.5V
GND
V
OUT
5V
SHDN
FB
MAX1896
ON/OFF
SS
C
SS
33nF
C
IN
C1
10
μ
F
10V
C2
0.1
μ
F
L
10
μ
H
SUMIDA
CD43-100
0.1
μ
F
C
OUT
22
μ
F
16V
R1
36k
R2
12k
NIHON
EC10QSO2L
Chip Information
TRANSISTOR COUNT: 970
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| MAX1898 | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX1898EUB41 | Linear Charger for Single-Cell Li Battery |
| MAX1898EUB42 | Linear Charger for Single-Cell Li Battery |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1896EUT | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP D - Cut Tape Product |
| MAX1896EUT#G16 | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP DC-DC CONVERTER - Rail/Tube |
| MAX1896EUT#TG16 | 功能描述:電流型 PWM 控制器 1.4MHz Current-Mode Step-Up RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX1896EUT+ | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP DC-DC CONVERTER - Rail/Tube |
| MAX1896EUT+T | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 1.4MHz Current-Mode Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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