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L5963DN-EHT 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 L5963DN-EHT
상세설명  Automotive dual monolithic switching regulator with LDO and HSD
PDF  49 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5963DN-EHT 데이터시트(HTML) 2 Page - STMicroelectronics

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Contents
L5963
2/49
DocID028553 Rev 3
Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1
Operative modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2
Blocks functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2.1
Unregulated supply input voltage (VINLDO) . . . . . . . . . . . . . . . . . . . . . 19
6.2.2
Low voltage warning monitor (related pins: VDIN, VDOUT, VDDLY) . . . 19
6.2.3
Power-good reset (related pins: LDOOK, LDOOKDLY) . . . . . . . . . . . . . 20
6.2.4
Power-good function of DC/DC1 (related pins: SW1OK, SW1OKDLY) . 20
6.2.5
Over voltage shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2.6
Power ground (PGND1 and PGND2) . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.7
Signal ground (SGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.8
PWM signal ground (SWGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.9
TAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.10
Linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.11
High-side driver (HSD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2.12
Switching regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.1
Output inductor (Lo) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2
Output capacitors (COUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.3
Input capacitors (CIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.4
Bootstrap capacitor (CBOOT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31



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