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TPS60241DGKTG4 Datasheet(PDF) 9 Page - Texas Instruments

Part # TPS60241DGKTG4
Description  TPS6024x 170-Vrms Zero-Ripple Switched Capacitor Buck-Boost Converter for VCO Supply
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS60241DGKTG4 Datasheet(HTML) 9 Page - Texas Instruments

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TPS60241
VIN
C1
1 F
C2
1 F
C1+
C1
GND
VOUT
C2+
C2
EN
CI
1 F
GND
3.3 V
5 V
CO
1 F
VCO
VCC
GND
TPS60240, TPS60241, TPS60242, TPS60243
www.ti.com
SLVS372C – JUNE 2001 – REVISED OCTOBER 2015
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The TPS6024x is a switched capacitor voltage converter for VCO and PLL applications providing low noise
conversion and tight tolerances. It supports regulated output voltages of 2.7 V, 3 V and 3.3 V from a 1.8-V to 5.5-
V input voltage range. The TPS60241 generates 5-V output voltage from an 2.7-V to 5.5-V input voltage range.
8.2 Typical Applications
8.2.1 5-V Low-Noise VCO Supply from 3.3-V Input
Figure 4. 5-V Low-Noise VCO Supply from 3.3-V Input
8.2.1.1 Design Requirements
The complete charge pump circuitry requires no inductors and only four small ceramic capacitors.
8.2.1.2 Detailed Design Procedure
8.2.1.2.1
Output Voltage Ripple
The output voltage ripple depends on the capacitors used. Table 1 shows the dependence between output
voltage ripple and capacitor selection.
Table 1. Output Voltage Ripple and Capacitor Selection(1)
OUTPUT VOLTAGE RIPPLE
CI
CO
C1
C2
[µVrms]
1 µF
1 µF
1 µF
1 µF
288
2.2 µF
2.2 µF
1 µF
1 µF
212
4.7 µF
4.7 µF
1 µF
1 µF
183
4.7 µF
1 µF
1 µF
1 µF
272
1 µF
4.7 µF
1 µF
1 µF
185
(1)
NOTE: VIN = 3.3 V, VOUT = 5 V, RL = 500 Ω, TA = 25°C
Copyright © 2001–2015, Texas Instruments Incorporated
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Product Folder Links: TPS60240 TPS60241 TPS60242 TPS60243


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