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LM2825N-5.0 Scheda tecnica(PDF) 5 Page - Texas Instruments

Il numero della parte LM2825N-5.0
Spiegazioni elettronici  LM2825 Integrated Power Supply 1A DC-DC Converter
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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LM2825N-5.0 Scheda tecnica(HTML) 5 Page - Texas Instruments

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LM2825
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SNVS127C – MAY 1997 – REVISED APRIL 2013
All Output Voltage Versions Electrical Characteristics
Specifications with standard type face are for TA = 25°C, and those with boldface type apply over full Operating Range.
Unless otherwise specified, VIN = 12V for 3.3V, 5.0V and ADJ versions, VIN = 24V for 12V and H-ADJ versions, ILOAD = 100
mA.
Symbol
Parameter
Conditions
LM2825-XX
Units
(Limits)
Typical(1)
Limit(2)
ICL
DC Output Current Limit
RL = 0Ω
1.4
A
1.2
A(min)
2.4
A(max)
IQ
Operating Quiescent
SD/SS Pin = 3.1V(3)
5
mA
Current
10
mA(max)
ISTBY
Standby Quiescent
SD/SS Pin = 0V(3)
65
μA
Current
200
μA(max)
IADJ
Adjust Pin Bias Current
Adjustable Versions Only, VFB = 1.3V
6
nA
50/100
nA(max)
fO
Oscillator Frequency
See(4)
150
kHz
θJA
Thermal Resistance
Junction to Ambient(5)
30
°C/W
SHUTDOWN/SOFT-START CONTROL Test Circuit, see Figure 17
VSD
Shutdown Threshold
1.3
V
Voltage
Low (Shutdown Mode)
0.6
V(max)
High (Soft-start Mode)
2.0
V(min)
VSS
Soft-start Voltage
VOUT = 20% of Nominal Output Voltage
2
V
VOUT = 100% of Nominal Output Voltage
3
ISD
Shutdown Current
VSHUTDOWN = 0.5V
(3)
5
μA
10
μA(max)
ISS
Soft-start Current
VSOFT-START = 2.5V
(3)
1.6
μA
5
μA(max)
(1)
Typical numbers are at 25°C and represent the most likely norm.
(2)
All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face) when output current is limited
to the value given in the temperature derating curves. See the Application Information section for curves. All limits at temperature
extremes are ensured using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing
Quality Level (AOQL).
(3)
ILOAD = 0A.
(4)
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.
(5)
Junction to ambient thermal resistance (no external heat sink) for the PDIP package with the leads soldered to a printed circuit board
with (1 oz.) copper area of approximately 2 in2.
Copyright © 1997–2013, Texas Instruments Incorporated
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