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LM2591HVSX-ADJ Folha de dados(PDF) 6 Page - Texas Instruments

Nome de Peças LM2591HVSX-ADJ
Descrição Electrónicos  SIMPLE SWITCHER Power Converter Step-Down Voltage Regulator
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM2591HVSX-ADJ Folha de dados(HTML) 6 Page - Texas Instruments

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LM2591HV
SNVS074E – MAY 2001 – REVISED MAY 2016
www.ti.com
Product Folder Links: LM2591HV
Submit Documentation Feedback
Copyright © 2001–2016, Texas Instruments Incorporated
(1)
All limits ensured at room temperature (TJ = 25°C) unless otherwise noted. All room temperature limits are 100% production tested. All
limits at temperature extremes are ensured through correlation using standard Statistical Quality Control (SQC) methods. All limits are
used to calculate Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely norm.
(3)
The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the
severity of current overload.
(4)
No diode, inductor or capacitor connected to output pin.
(5)
Feedback pin removed from output and connected to 0 V to force the output transistor switch ON.
(6)
Feedback pin removed from output and connected to 12 V for the 3.3-V, 5-V, and the ADJ. version to force the output transistor switch
OFF.
(7)
VIN = 60 V.
7.8 Electrical Characteristics All Output Voltage Versions
Specifications are for TJ = 25°C, ILOAD = 500 mA, and VIN = 12V for the 3.3-V, 5-V, and adjustable versions, unless otherwise
noted.
PARAMETER
TEST CONDITIONS
MIN(1)
TYP(2)
MAX(1)
UNIT
DEVICE PARAMETERS
Ib
Feedback Bias Current
Adjustable Version Only, VFB = 1.3 V
10
50
nA
TA = –40°C to 125°C
100
fO
Oscillator Frequency
See (3)
127
150
173
kHz
TA = –40°C to 125°C
110
173
VSAT
Saturation Voltage
IOUT = 1 A
(4) (5)
0.95
1.2
V
TA = –40°C to 125°C
1.3
DC
Max Duty Cycle (ON)
See (5)(6)
100%
Min Duty Cycle (OFF)
0%
ICLIM
Switch current Limit
Peak Current(4)(5)
1.3
1.9
2.8
A
TA = –40°C to 125°C
1.2
3.0
IL
Output Leakage Current
Output = 0 V
5
50
μA
Output =
−1 V (4)(6)(7)
5
30
mA
IQ
Operating Quiescent
Current
SD/SS Pin Open (6)
5
10
mA
ISTBY
Standby Quiescent
Current
SD/SS pin = 0 V (7)
90
200
μA
TA = –40°C to 125°C
250
ON/OFF CONTROL – See Test Circuits
VIH
VIL
ON/OFF Pin Logic Input
Threshold Voltage
Low (Regulator ON)
High (Regulator OFF)
1.3
V
TA = –40°C to 125°C
2.0
0.6
IH
ON/OFF Pin Input
Current
VLOGIC = 2.5 V (Regulator OFF)
5
15
μA
IL
VLOGIC = 0.5 V (Regulator ON)
0.02
5
μA


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