TPS60240_16 Datasheet, PDF (1/22 Pages) Texas Instruments – TPS6024x 170-Vrms Zero-Ripple Switched Capacitor Buck-Boost Converter for VCO Supply

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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
•1 Wide Input Voltage Range from 1.8 V to 5.5 V
• Regulated 2.7-V, 3-V, 3.3-V or 5-V Output Voltage
With ±2.5% Accuracy Over Load
• Up to 25-mA Output Current
• 170-µVrms Zero Ripple Output:
at 20 Hz to 10 MHz Bandwidth
• Up to 90% Efficiency
• Minimum Number of External Components
– No Inductors
– Only Small Ceramic Chip Capacitors
• Shutdown Mode: 0.1 µA Typical
• Thermal Protection and Current Limit
• Micro-Small 8-Pin VSSOP Package
• EVM Available TPS60241EVM-194
2 Applications
• VCO and PLL Power for:
– Smart Phones
– Mobile Phones
– PCMCIA Modems
• Smartcard Readers
• Digital Cameras
• MP3 Players
• SIM Modules
• Electronic Games
• Memory Backup
• Handheld Meters
• Bias Supplies
3 Description
The TPS6024x devices are a family of switched
capacitor voltage converters, ideally suited for
voltage-controlled oscillator (VCO) and phase-locked
loop (PLL) applications that require low noise and
tight tolerances. Its dual-cap design uses four
ceramic capacitors to provide ultra-low output ripple
with high efficiency, while eliminating the need for
inefficient linear regulators.
The TPS6024x devices operate down to 1.8 V,
supporting a 3.3-V, 2.7-V, 3-V output from two-cell,
nickel- or alkaline-based chemistries, whereas the
TPS60241 works with 2.7-V to 5.5-V input voltage
providing a 5-V output. 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 shutdown
mode of the converter conserves battery energy.
The devices are thermally protected and current-
limited for reliable operation even under persisting
fault conditions. Normal quiescent current (ground pin
current) is only 250 µA, and typically 0.1 µA in
shutdown mode. The TPS6024x devices come in a
thin, 8-pin VSSOP package with a component height
of only 1.1 mm.
Device Information⁽¹⁾
PART NUMBER
PACKAGE OUTPUT VOLTAGE
TPS60240
3.3 V
TPS60241
TPS60242
VSSOP (8)
5V
2.7 V
TPS60243
3V
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
3.3 V
CI
1 μF
GND
Typical Application Schematic
C1
1 μF
VIN
VOUT
TPS60241
C1+
C2+
C1_–
C2_–
5V
C2
1 μF
VCC
CO
1 μF
VCO
GND
EN
GND
Efficiency vs Output Current
100
V =3.6V V =3.3V
IN
OUT
90
80
70
V =2.4V V =3.3V
IN
OUT
60
50
40
30
20
10
0
0.1
1
10
100
Output Current - mA
1000
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.