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TPS65580PWPR データシート(PDF) 6 Page - Texas Instruments

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部品番号 TPS65580PWPR
部品情報  4.5V to 18V Input 1.5A, 2.5A, 1.5A Triple Synchronous Step-Down Converter
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TPS65580PWPR データシート(HTML) 6 Page - Texas Instruments

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SW1
VIN
VBST1
EN1
VFB2
EN3
GND
VREG5
PGND1
6
VBST2
SW2
EN2
5
1
3
11
2
4
7
13
12
TPS65580
HTSSOP20
14
8
15
16
(PowerPAD)
VFB1
VFB3
VBST3
SW3
10
9
17
18
19
20
PGND2
PGND3
PG
VIN
TPS65580
SLVSC29 – SEPTEMBER 2013
www.ti.com
DEVICE INFORMATION
HTSSOP PACKAGE
(TOP VIEW)
PIN FUNCTIONS(1)
PIN
I/O
DESCRIPTION
NAME
TSSOP20
VIN
1,2
I
Power input and connects to both high side NFET drains. Supply Input for 5.5V linear regulator.
VBST1, VBST2,
Supply input for high-side NFET gate drive circuit. Connect 0.1µF ceramic capacitor between
3, 14, 20
I
VBST3
VBSTx and SWx pins. An internal diode is connected between VREG5 and VBSTx
SW1, SW2,
Switch node connections for both the high-side NFETs and low–side NFETs. Input of current
4,15,19
I/O
SW3
comparator.
PGND1,
PGND2,
5,16,18
I/O
Ground returns for low-side MOSFETs. Input of current comparator.
PGND3
Output of 5.5V linear regulator. Bypass to GND with a high-quality ceramic capacitor of at least
VREG5
6
O
1.0µF. VREG5 is active when ENx is high level.
PG
7
O
Open drain power good output. Low means the output voltage is out of regulation.
EN1, EN2, EN3
8,13,17
I
Enable. Pull High to according converter.
VFB1, VFB2,
9,11,12
I
D-CAP2 feedback inputs. Connect to output voltage with resistor divider.
VFB3
GND
10
I/O
Signal GND. Connect sensitive VFBx returns to GND at a single point.
Exposed
Thermal pad of the package. Must be soldered to achieve appropriate dissipation. Must be
Back side
I/O
Thermal Pad
connected to GND.
(1)
x means either 1, 2 or 3, VFBx means VFB1, VFB2 or VFB3.
6
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPS65580


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