Output Current - mA
Efficiency- %
0
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0.1 1 10 100 1000
V =2.4V V =3.3V
IN OUT
V =3.6V V =3.3V
IN OUT
TPS60241
V
IN
C
1
1
μF
C
2
1 Fμ
C
1+
C
1–
GND
V
OUT
C
2+
C
2–
EN
C
I
1 F
μ
GND
3.3 V
5 V
C
O
1 F
μ
VCO
V
CC
GND
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TPS60240
,
TPS60241
,
TPS60242
,
TPS60243
SLVS372C –JUNE 2001–REVISED OCTOBER 2015
TPS6024x 170-µVrms Zero-Ripple Switched Capacitor Buck-Boost
Converter for VCO Supply
1 Features 3 Description
The TPS6024x devices are a family of switched
1
• Wide Input Voltage Range from 1.8 V to 5.5 V
capacitor voltage converters, ideally suited for
• Regulated 2.7-V, 3-V, 3.3-V or 5-V Output Voltage
voltage-controlled oscillator (VCO) and phase-locked
With ±2.5% Accuracy Over Load
loop (PLL) applications that require low noise and
• Up to 25-mA Output Current
tight tolerances. Its dual-cap design uses four
ceramic capacitors to provide ultra-low output ripple
• 170-µVrms Zero Ripple Output:
with high efficiency, while eliminating the need for
at 20 Hz to 10 MHz Bandwidth
inefficient linear regulators.
• Up to 90% Efficiency
The TPS6024x devices operate down to 1.8 V,
• Minimum Number of External Components
supporting a 3.3-V, 2.7-V, 3-V output from two-cell,
– No Inductors
nickel- or alkaline-based chemistries, whereas the
– Only Small Ceramic Chip Capacitors
TPS60241 works with 2.7-V to 5.5-V input voltage
providing a 5-V output. The devices work equally well
• Shutdown Mode: 0.1 µA Typical
for low EMI DC–DC step-up conversion without the
• Thermal Protection and Current Limit
need for an inductor. The high switching frequency
• Micro-Small 8-Pin VSSOP Package
(typical 160 kHz) promotes the use of small surface-
mount capacitors, saving board space. The shutdown
• EVM Available TPS60241EVM-194
mode of the converter conserves battery energy.
2 Applications
The devices are thermally protected and current-
limited for reliable operation even under persisting
• VCO and PLL Power for:
fault conditions. Normal quiescent current (ground pin
– Smart Phones
current) is only 250 µA, and typically 0.1 µA in
– Mobile Phones
shutdown mode. The TPS6024x devices come in a
thin, 8-pin VSSOP package with a component height
– PCMCIA Modems
of only 1.1 mm.
• Smartcard Readers
• Digital Cameras
Device Information
(1)
• MP3 Players
PART NUMBER PACKAGE OUTPUT VOLTAGE
• SIM Modules
TPS60240 3.3 V
TPS60241 5 V
• Electronic Games
VSSOP (8)
TPS60242 2.7 V
• Memory Backup
TPS60243 3 V
• Handheld Meters
(1) For all available packages, see the orderable addendum at
• Bias Supplies
the end of the data sheet.
Typical Application Schematic Efficiency vs Output Current
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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