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MIC2128 Datenblatt(PDF) 2 Page - Microchip Technology

Teilenummer MIC2128
Bauteilbeschribung  75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start
PDF  32 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MIC2128 Datenblatt(HTML) 2 Page - Microchip Technology

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MIC2128
DS20005620A-page 2
 2016 Microchip Technology Inc.
Typical Application
Functional Block Diagram
PVDD
VDD
PG
EN
SS
FREQ
EXTVDD
FB
ILIM
SW
BST
VIN
VIN
4.5V to 75V
VOUT
5V@5A
VOUT
VIN
4.7
µF
2.2
µFX3
47
µF
10
µH
0.1
µF
0.1
µF
4.7 nF
1
µF
4.7
µF
2.2
18 k
7.5 k
1 k
100 k
60 k
1.5 k
VIN
MIC2128
PGND
AGND
DH
DL
10 nF
330
µF
+
0.1
µF
Q1
Q2
Q1,Q2: SiR878ADP
L1: SRP1265A-100M, Bourns
C1: 10SVP330M
L1
C1
SW
PG
VDD
BST
PVDD
FREQ
PVDD
VIN
PGND
ILIM
Negative Current
Limit
8
15
THERMAL
SHUTDOWN
11
TON
ESTIMATION
Control
Logic
14
1
AGND
EN
10
2
9
EXTVDD
LINEAR
REGULATOR
gm
13
FB
COMPENSATION
VREF
FB
5 DH
7 DL
12
SS
3
4
16
CURRENT LIMIT
DETECTION
0.9
96 µA
UVLO
LINEAR
REGULATOR
0.6V
VREF
1.3 µA
6



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