Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LM2590HV Datasheet(PDF) 16 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2590HV
Description  SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2590HV Datasheet(HTML) 16 Page - National Semiconductor (TI)

Back Button LM2590HV Datasheet HTML 12Page - National Semiconductor (TI) LM2590HV Datasheet HTML 13Page - National Semiconductor (TI) LM2590HV Datasheet HTML 14Page - National Semiconductor (TI) LM2590HV Datasheet HTML 15Page - National Semiconductor (TI) LM2590HV Datasheet HTML 16Page - National Semiconductor (TI) LM2590HV Datasheet HTML 17Page - National Semiconductor (TI) LM2590HV Datasheet HTML 18Page - National Semiconductor (TI) LM2590HV Datasheet HTML 19Page - National Semiconductor (TI) LM2590HV Datasheet HTML 20Page - National Semiconductor (TI)  
Zoom Inzoom in Zoom Outzoom out
 16 / 20 page
background image
Application Information (Continued)
lNVERTING REGULATOR
The circuit in
Figure 10 converts a positive input voltage to a
negative output voltage with a common ground. The circuit
operates by bootstrapping the regulator’s ground pin to the
negative output voltage, then grounding the feedback pin,
the regulator senses the inverted output voltage and regu-
lates it.
This example uses the LM2590HV-5 to generate a −5V
output, but other output voltages are possible by selecting
other output voltage versions, including the adjustable ver-
sion. Since this regulator topology can produce an output
voltage that is either greater than or less than the input
voltage, the maximum output current greatly depends on
both the input and output voltage.
To determine how much load current is possible before the
internal device current limit is reached (and power limiting
occurs), the system must be evaluated as a buck-boost
configuration rather than as a buck. The peak switch current
in Amperes, for such a configuration is given as:
where L is in µH and f is in Hz. The maximum possible load
current I
LOAD is limited by the requirement that IPEAK ≤ ICLIM.
While checking for this, take I
CLIM to be the lowest possible
current limit value (min across tolerance and temperature is
1.2A for the LM2590HV). Also to account for inductor toler-
ances, we should take the min value of Inductance for L in
the equation above (typically 20% less than the nominal
value). Further, the above equation disregards the drop
across the Switch and the diode. This is equivalent to as-
10134742
FIGURE 9. Typical Circuit Using Shutdown /Soft-start and Error Flag Features
10134743
FIGURE 10. Inverting −5V Regulator With Shutdown and Soft-start
www.national.com
16


Similar Part No. - LM2590HV

ManufacturerPart No.DatasheetDescription
Texas Instruments
Texas Instruments
LM2590HV TI-LM2590HV Datasheet
727Kb / 22P
[Old version datasheet]   LM2590HV SIMPLE SWITCHERPower Converter 150 kHz 1A Step-Down Voltage
LM2590HV TI1-LM2590HV Datasheet
1Mb / 35P
[Old version datasheet]   SIMPLE SWITCHER Power Converter
National Semiconductor (TI)
National Semiconductor ...
LM2590HV-AQ NSC-LM2590HV-AQ Datasheet
885Kb / 22P
   SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
Texas Instruments
Texas Instruments
LM2590HV-AQ-Q1 TI1-LM2590HV-AQ-Q1 Datasheet
3Mb / 30P
[Old version datasheet]   SIMPLE SWITCHER Power Converter Step-Down Voltage Regulator
LM2590HVS-3.3/NOPB TI1-LM2590HVS-3.3/NOPB Datasheet
1Mb / 35P
[Old version datasheet]   SIMPLE SWITCHER Power Converter
More results

Similar Description - LM2590HV

ManufacturerPart No.DatasheetDescription
National Semiconductor (TI)
National Semiconductor ...
LM2598 NSC-LM2598 Datasheet
847Kb / 33P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2590HV-AQ NSC-LM2590HV-AQ Datasheet
885Kb / 22P
   SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
Texas Instruments
Texas Instruments
LM2598 TI1-LM2598_13 Datasheet
2Mb / 45P
[Old version datasheet]   SIMPLE SWITCHER짰 Power Converter 150 kHz 1A Step-Down Voltage Regulator with Features
National Semiconductor (TI)
National Semiconductor ...
LM2591HV NSC-LM2591HV Datasheet
730Kb / 20P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2595 NSC-LM2595 Datasheet
935Kb / 29P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2597 NSC-LM2597 Datasheet
900Kb / 34P
   SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2593HV NSC-LM2593HV Datasheet
753Kb / 21P
   SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage Regulator, with Features
LM2599 NSC-LM2599 Datasheet
812Kb / 31P
   SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
Texas Instruments
Texas Instruments
LM2595 TI1-LM2595_13 Datasheet
3Mb / 41P
[Old version datasheet]   SIMPLE SWITCHER짰 Power Converter 150 kHz 1A Step-Down Voltage Regulator
National Semiconductor (TI)
National Semiconductor ...
LM2599 NSC-LM2599_00 Datasheet
817Kb / 32P
   SIMPLE SWITCHER짰 Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
More results


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz