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L6732 数据表(PDF) 2 Page - STMicroelectronics

部件名 L6732
功能描述  Adjustable step-down controller with synchronous rectification
Download  33 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6732 数据表(HTML) 2 Page - STMicroelectronics

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Contents
L6732
2/33
Contents
1
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Pin connections and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5
Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2
Internal LDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3
Bypassing the LDO to avoid the voltage drop with low Vcc . . . . . . . . . . . . . 12
5.4
Internal and external references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.5
Error amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.6
Soft start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.7
Driver section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.8
Monitoring and protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.9
HICCUP mode during an OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.10
Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.11
Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.12
Minimum on-time (TON, MIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.13
Bootstrap anti-discharging system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.13.1 Fan's power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21


类似零件编号 - L6732

制造商部件名数据表功能描述
logo
STMicroelectronics
L6732 STMICROELECTRONICS-L6732 Datasheet
823Kb / 36P
   Adjustable step-down controller with synchronous rectification
L6732 STMICROELECTRONICS-L6732 Datasheet
900Kb / 37P
   Adjustable step-down controller with synchronous rectification
L6732C STMICROELECTRONICS-L6732C Datasheet
898Kb / 32P
   Soft-start and inhibit
May 2006 Rev 2
L6732TR STMICROELECTRONICS-L6732TR Datasheet
823Kb / 36P
   Adjustable step-down controller with synchronous rectification
L6732TR STMICROELECTRONICS-L6732TR Datasheet
900Kb / 37P
   Adjustable step-down controller with synchronous rectification
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类似说明 - L6732

制造商部件名数据表功能描述
logo
STMicroelectronics
L6910 STMICROELECTRONICS-L6910 Datasheet
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   ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
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   Adjustable step-down controller with synchronous rectification
L6910 STMICROELECTRONICS-L6910_05 Datasheet
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   ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
L6730 STMICROELECTRONICS-L6730 Datasheet
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L6910G STMICROELECTRONICS-L6910G Datasheet
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   ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
L6730 STMICROELECTRONICS-L6730_09 Datasheet
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L6730C STMICROELECTRONICS-L6730C Datasheet
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L6732_0906 STMICROELECTRONICS-L6732_0906 Datasheet
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L6731D STMICROELECTRONICS-L6731D Datasheet
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   Adjustable step-down controller with synchronous rectification dedicated to DDR memory
L6731B STMICROELECTRONICS-L6731B Datasheet
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   Adjustable step-down controller with synchronous rectification Dedicated to DDR Memory
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