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LM2852YMXA-1.2 数据表(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LM2852YMXA-1.2
功能描述  2A 500/1500kHz SIMPLE SYNCHRONOUS Buck Regulator
Download  13 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM2852YMXA-1.2 数据表(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
PVIN, AVIN, EN, SNS
−0.3V to 6.5V
ESD Susceptibility (Note 2)
2kV
Power Dissipation
Internally Limited
Storage Temperature Range
−65˚C to +150˚C
Maximum Junction Temp.
150˚C
14-Pin Exposed Pad TSSOP
Package
Infrared (15 sec)
Vapor Phase (60 sec)
Soldering (10 sec)
220˚C
215˚C
260˚C
Operating Ratings
PVIN to GND
1.5V to 5.5V
AVIN to GND
2.85V to 5.5V
Junction Temperature
−40˚C to +125˚C
θ
JA
37.6˚C/W
Electrical Characteristics AVIN = PVIN = 5V unless otherwise indicated under the Conditions column.
Typicals and limits appearing in plain type apply for T
A =TJ = +25˚C. Limits appearing in boldface type apply over full Oper-
ating Junction Temperature Range (−40˚C to +125˚C). Datasheet min/max specification limits are guaranteed by design, test,
or statistical analysis.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
V
OUT
Voltage Tolerance
3
V
OUT = 1.0V option
0.9775
1.0225
V
V
OUT = 1.2V option
1.1730
1.2270
V
OUT = 1.5V option
1.4663
1.5337
V
OUT = 1.8V option
1.7595
1.8405
V
OUT = 2.5V option
2.4437
2.5563
V
OUT = 3.3V option
3.2257
3.3743
∆V
OUT/
∆AVIN
Line Regulation
3
V
OUT = 0.8V, 1.0V, 1.2V, 1.5V, 1.8V or
2.5V
2.85V
≤ AVIN ≤ 5.5V
0.2
0.6
%
V
OUT = 3.3V
3.5V
≤ AVIN ≤ 5.5V
0.2
0.6
%
∆V
OUT/
∆I
O
Load Regulation
Normal operation
8
mV/A
V
ON
UVLO Threshold
(AVIN)
Rising
2.47
2.85
V
Falling Hysteresis
85
150
210
mV
r
DSON-P
PFET On
Resistance
Isw=2A
75
140
m
r
DSON-N
NFET On
Resistance
Isw=2A
55
120
m
R
SS
Soft-start
resistance
400
k
I
CL
Peak Current Limit
Threshold
2.25
3
3.65
A
I
Q
Operating Current Non-switching
0.85
2
mA
I
SD
Shut Down
Quiescent Current
EN=0V
10
25
µA
R
SNS
Sense pin
resistance
400
k
PWM
f
osc
LM2852X
1500kHz option.
TBD
1500
TBD
kHz
LM2852Y
500kHz option.
325
500
625
kHz
D
range
Duty Cycle Range
0
100
%
www.national.com
4


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