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TPS65020RHAR Datasheet(PDF) 42 Page - Texas Instruments

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Part # TPS65020RHAR
Description  Power Management IC
Download  53 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65020RHAR Datasheet(HTML) 42 Page - Texas Instruments

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I
-OutputCurrent-mA
O
T =25 C
V
=3.3V
A
O
o
PFM/PWMMode
V =3.8V
I
V =4.2V
I
V =5V
I
0.01
0.1
1
10
100
1k
10k
I
-OutputCurrent-mA
O
T =25 C
V
=1.8V
A
O
o
PWM/PFMMode
V =2.5V
I
V =5V
I
0.01
0.1
1
10
100
1k
10k
V =4.2V
I
V =3.8V
I
TPS65020
SLVS607D – SEPTEMBER 2005 – REVISED JANUARY 2016
www.ti.com
The minimum and maximum values for the timing parameters called ICONST (2 µA), TRESPWRON_UPTH
(1 V), and TRESPWRON_LOWTH (0.25 V) can be found under the Electrical Characteristics.
9.2.2.8 VCC Filter
An RC filter connected at the VCC input is used to prevent noise from the internal supply for the bandgap and
other analog circuitry. A typical resistor value of 1
Ω and 1 μF is used to filter the switching spikes generated by
the DC-DC converters. A resistor larger than 10
Ω must not be used because the current (up to 3 mA) into VCC
causes a voltage drop at the resistor. This causes the undervoltage lockout circuitry connected internally at VCC
to switch off too early.
9.2.3 Application Curves
Graphs were taken using the EVM with the inductor and output capacitor combinations in Table 19.
Table 19. Inductor and Output Capacitor Combinations
CONVERTER
INDUCTOR
OUTPUT CAPACITOR
OUTPUT CAPACITOR VALUE
VDCDC1
VLCF4020-2R2
C2012X5R0J106M
2 × 10
μF
VDCDC2
VLCF4020-2R2
C2012X5R0J106M
2 × 10
μF
VDCDC3
VLF4012AT-2R2M1R5
C2012X5R0J106M
2 × 10
μF
spacer
Figure 40. DCDC2 Efficiency
Figure 39. DCDC1 Efficiency
42
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Product Folder Links: TPS65020


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