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LP3907TL-JSXS/NOPB Datasheet(PDF) 22 Page - Texas Instruments

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Part # LP3907TL-JSXS/NOPB
Description  Dual High-Current Step-Down DC-DC and Dual Linear Regulator
PDF  58 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3907TL-JSXS/NOPB Datasheet(HTML) 22 Page - Texas Instruments

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EN_T
Vout Buck1
Vout Buck2
Vout LDO1
Vout LDO2
t1
t2
t3
t4
EN_T
Vout Buck1
Vout Buck2
Vout LDO1
Vout LDO2
t2
t3
t4
t1
I
2
C
Ext_Enable
Pins
Regulator ON
Start Programmed
Timing Sequence
0
1
EN_T
22
LP3907
SNVS511S – JUNE 2007 – REVISED APRIL 2016
www.ti.com
Product Folder Links: LP3907
Submit Documentation Feedback
Copyright © 2007–2016, Texas Instruments Incorporated
Feature Description (continued)
Figure 32. Power Rail Enable Logic
Figure 33. LP3907 Default Power-Up Sequence
Table 5. Power-On Timing Specification
DESCRIPTION
MIN
NOM
TYP
UNIT
t1
Programmable delay from EN_T assertion to VCC_Buck1 On
1.5
ms
t2
Programmable delay from EN_T assertion to VCC_Buck2 On
2
ms
t3
Programmable delay from EN_T assertion to VCC_LDO1 On
3
ms
t4
Programmable delay from EN_T assertion to VCC_LDO2 On
6
ms
Figure 34. LP3907 Default Power-Off Sequence



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