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LM20502SILT Datasheet(PDF) 6 Page - Texas Instruments

No. de pieza LM20502SILT
Descripción Electrónicos  2A SIMPLE SWITCHER Nano Module
Download  37 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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LM20502SILT Datasheet(HTML) 6 Page - Texas Instruments

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LMZ20502
SNVS852C – JUNE 2012 – REVISED APRIL 2015
www.ti.com
7.5 Electrical Characteristics
Limits apply over the recommended operating junction temperature range of –40°C to 125°C, unless otherwise noted.
Minimum and maximum limits are verified through test, design, or statistical correlation. Typical values represent the most
likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following
conditions apply: VIN = 3.6 V
PARAMETER
TEST CONDITIONS
MIN (1)
TYP
MAX(1)
UNIT
VFB
Feedback voltage
VIN = 3.6 V
0.594
0.6
0.606
V
IQ_AUTO
Operating quiescent current in
AUTO mode, VFB = 0.8V
72
90
µA
AUTO mode
IQ_PWM
Operating quiescent current in
PWM mode, VFB = 0.8V
490
620
µA
forced PWM mode
IQ_off
Shutdown quiescent current(2)
VIN = 3.6 V, VEN = 0.0 V
0.7
1.5
µA
VIN = 5.5 V, VEN = 0.0 V
1.0
2.4
VUVLO
Input supply under-voltage
Rising
2.5
V
lock-out thresholds
Falling
2.3
VEN
High Level Input Voltage
VIH
1.4
V
Low Level Input Voltage
VIL
0.4
VMODE
High Level Input Voltage
VIH
1.2
V
Low Level Input Voltage
VIL
0.4
I LIM
Peak switch current limit(3)
2.1
2.7
A
Fosc
Internal oscillator frequency
2.5
3.0
3.2
MHz
TON
Minimum switch on-time(4)
50
ns
Tss
Soft start time (4)
800
µs
RPG
Power good flag pull-down
40
70
110
Rdson
VPG1
Power good flag, under-
% of feedback voltage, rising
92%
voltage trip(5)
VPG2
Power good flag, under-
% of feedback voltage, falling
88%
voltage trip(5)
VPG3
Power good flag, over-voltage
% of feedback voltage, rising
112%
trip(5)
VPG4
Power good flag, over-voltage
% of feedback voltage, falling
108%
trip(5)
TSD
Thermal shutdown(4)
Rising threshold
159
°C
Thermal shutdown
15
°C
hysteresis(4)
(1)
MIN and MAX limits are 100% production tested at 25°C. Limits over the operating temperature range are verified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Shutdown current includes leakage current of the switching transistors.
(3)
This is the peak switch current limit measured with a slow current ramp. Due to inherent delays in the current limit comparator, the peak
current limit measured at 3MHz will be larger.
(4)
This parameter is not tested in production.
(5)
See Power Good Flag Function for explanation of voltage levels.
6
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