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A5975AD 데이터시트(PDF) 3 Page - STMicroelectronics

부품명 A5975AD
상세설명  Voltage feed-forward
PDF  50 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A5975AD 데이터시트(HTML) 3 Page - STMicroelectronics

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A5975AD
Contents
Doc ID 018761 Rev 1
3/50
8.1
Component selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.2
Layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.3
Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.3.1
Thermal resistance RTHJ-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.3.2
Thermal impedance ZthJ-A(t) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4
RMS current of the embedded power MOSFET . . . . . . . . . . . . . . . . . . . 32
8.5
Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.6
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.7
Positive buck-boost regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.8
Negative buck-boost regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.9
Floating boost current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.10
Synchronization example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.11
Compensation network with MLCC at the output . . . . . . . . . . . . . . . . . . . 41
8.12
External soft-start network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9
Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
11
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49



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