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TPS60240 Datasheet

  • TPS60240

  • 具有固定 3.3V 輸出用于 VCO 電源的 170 uVrms 零紋波開關(guān)電容升...

  • 21頁

  • TI

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TPS60240, TPS60241
TPS60242, TPS60243
Actual Size
(3,05 mm x 4,98 mm)
SLVS372B 鈥?JUNE 2001 鈥?REVISED JANUARY 2002
170-碌Vrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST
CONVERTER FOR VCO SUPPLY
FEATURES
D
Wide Input Voltage Range:
鈥?1.8 V To 5.5 V for 2.7-V, 3-V, 3.3-V Output
(TPS60240/2/3)
鈥?2.7 V To 5.5 V for 5-V Output (TPS60241)
170-碌Vrms Zero Ripple Output:
鈥?at 20 Hz to 10 MHz Bandwidth
Minimum Number of External Components
鈥?No Inductors
鈥?Only Small Ceramic Chip Capacitors
Up to 90% Efficiency
Regulated 3.3-V (TPS60240), 5-V (TPS60241),
3-V (TPS60243), and 2.7-V (TPS60242) Output
Voltage With
鹵2.5%
Accuracy Over Load
Up to 25-mA Output Current
Shutdown Mode: 0.1
碌A(chǔ)
Typical
Thermal Protection and Current Limit
Microsmall 8-Pin MSOP Package
EVM Available TPS60241EVM-194
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Digital Cameras
MP3 Players
SIM Modules
Electronic Games
Memory Backup
Handheld Meters
Bias Supplies
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.
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鈥檚 shutdown mode conserves battery
energy.
APPLICATIONS
D
VCO and PLL Power for:
鈥?PDA Phones
鈥?Cellular Phones
鈥?PCMCIA Modems
Smartcard Readers
D
typical application circuit
3.3 V
VIN
VOUT
5V
VCC
CI
1
碌F
GND
C1
1
碌F
TPS60241
C1+
C2+
C1鈥?/div>
GND
C2鈥?/div>
EN
C2
1
碌F
CO
1
碌F
VCO
GND
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2002, Texas Instruments Incorporated
www.ti.com
1

TPS60240 PDF文件相關(guān)型號

TPS60241,TPS60243,TPS60312,TPS60400,TPS60402,TPS60403-Q1

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