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TPS60242 PDF预览

TPS60242

更新时间： 2024-11-23 22:52:55
品牌 Logo 应用领域
德州仪器 - TI 转换器开关升压转换器
页数 文件大小 规格书
20页 375K
描述
170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY

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中文翻译

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TPS60242 数据手册

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TPS60240, TPS60241  
TPS60242, TPS60243  
Actual Size  
(3,05 mm x 4,98 mm)  
SLVS372B – JUNE 2001 – REVISED JANUARY 2002  
170-µVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST  
CONVERTER FOR VCO SUPPLY  
D
D
D
D
D
D
D
Digital Cameras  
MP3 Players  
FEATURES  
D
Wide Input Voltage Range:  
– 1.8 V To 5.5 V for 2.7-V, 3-V, 3.3-V Output  
(TPS60240/2/3)  
SIM Modules  
Electronic Games  
Memory Backup  
Handheld Meters  
Bias Supplies  
– 2.7 V To 5.5 V for 5-V Output (TPS60241)  
D
D
170-µVrms Zero Ripple Output:  
– at 20 Hz to 10 MHz Bandwidth  
Minimum Number of External Components  
– No Inductors  
– Only Small Ceramic Chip Capacitors  
DESCRIPTION  
The TPS6024x is a switched capacitor voltage  
converter, ideally suited for VCO and PLL applications  
that require low noise and tight tolerances. Its dual-cap  
design uses four ceramic capacitors to provide ultralow  
output ripple yet high efficiency, while eliminating the  
need for inefficient linear regulators.  
D
D
Up to 90% Efficiency  
Regulated 3.3-V (TPS60240), 5-V (TPS60241),  
3-V (TPS60243), and 2.7-V (TPS60242) Output  
Voltage With ±2.5% Accuracy Over Load  
D
D
D
D
D
Up to 25-mA Output Current  
Shutdown Mode: 0.1 µA Typical  
Thermal Protection and Current Limit  
Microsmall 8-Pin MSOP Package  
EVM Available TPS60241EVM-194  
A wide input supply voltage range of 2.7 V to 5.5 V  
makes the TPS6024x ideal for lithium-based battery  
applications. The TPS60240/2/3 operates down to  
1.8 V, supporting a 3.3-V, 2.7-V, 3-V output from  
two-cell, nickel- or alkaline-based chemistries. The  
devices work equally well for low EMI dc/dc step-up  
conversion without the need for an inductor. The high  
switching frequency (typical 160 kHz) promotes the use  
of small surface-mount capacitors, saving board space.  
The converter’s shutdown mode conserves battery  
energy.  
APPLICATIONS  
D
VCO and PLL Power for:  
– PDA Phones  
– Cellular Phones  
– PCMCIA Modems  
D
Smartcard Readers  
typical application circuit  
5 V  
V
C
C
V
V
3.3 V  
IN  
OUT  
CC  
TPS60241  
C
1+  
1–  
2+  
2–  
C
O
1 µF  
C
1 µF  
C
1 µF  
C
2
1 µF  
I
1
VCO  
C
GND  
GND  
GND  
EN  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright 2002, Texas Instruments Incorporated  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
www.ti.com  
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TPS60242 替代型号

型号 品牌 替代类型 描述 数据表
TPS60243 TI

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 170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60241 TI

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 170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60240 TI

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 170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY

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 		170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
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 		170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60243DGKTG4 TI

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 		具有 3V 固定输出、适用于 VCO 电源的 170uVrms 零纹波开关电容升压转换器

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