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LM2647 Datasheet(PDF) 2 Page - Texas Instruments

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Part # LM2647
Description  LM2647 Dual Synchronous Buck Regulator Controller
PDF  42 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM2647 Datasheet(HTML) 2 Page - Texas Instruments

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SENSE1
1
FB1
2
COMP1
SS1
4
VDD
5
FREQ
6
SGND
7
EN
8
PGOOD
9
FPWM
10
SS2
11
COMP2
12
FB2
13
SENSE2
14
ILIM1
SW1
HDRV1
BOOT1
PGND1
LDRV1
VIN
V5
LDRV2
PGND2
BOOT2
HDRV2
SW2
ILIM2
3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9 10 11 12 13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SS1
VDD
FREQ
SGND
PGOOD
FPWM
V5
LDRV
2
PGND
2
BOOT
2
VIN
EN
LDRV
1
PGND1
5V
FPWM
VRON
R18
R17
POK
R20
R19
R1
C29
C16
(C15)
R22
(R16)
R21
(R15)
R23
(R14)
C17
(C14)
C25
(C22)
C26
(C23)
C31
C6 (C5)
C7 (C4)
R9 (R6)
R8 (R7)
Q2
(Q5)
Q1
(Q4)
C32
(C1)
L1
(L2)
Vo1
(Vo2)
D2
(D1)
C30
(C28)
VIN
FPWM
EN
PGOOD
VDD
FREQ
BOOT1 (2)
HDRV1 (2)
SW1 (2)
ILIM1 (2)
LDRV1 (2)
PGND1 (2)
SENSE1 (2)
V5
COMP1 (2)
FB1 (2)
SS1 (2)
SGND
VIN
LM2647
SNVS210F – JUNE 2003 – REVISED APRIL 2013
www.ti.com
Figure 1. Typical Application (Channel 2 in parenthesis)
See Figure 24 for Expanded View
Connection Diagrams
Top View
Top View
Figure 2. 28-Lead TSSOP Package
Figure 3. 28-Lead WQFN Package
See Package Number PW0028A
See Package Number NJB0028A
2
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: LM2647



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