參數(shù)資料
型號(hào)： LM2852
廠商： National Semiconductor Corporation
英文描述： 2A 500/1500kHz SIMPLE SYNCHRONOUS Buck Regulator
中文描述： 甲500/1500kHz簡(jiǎn)單的同步降壓穩(wěn)壓器
文件頁(yè)數(shù)： 4/13頁(yè)
文件大?。?/td> 618K
代理商： LM2852
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
ESD Susceptibility (Note 2)
Power Dissipation
Storage Temperature Range
Maximum Junction Temp.
14-Pin Exposed Pad TSSOP
Package
Infrared (15 sec)
Vapor Phase (60 sec)
Soldering (10 sec)
0.3V to 6.5V
2kV
Internally Limited
65C to +150C
150C
220C
215C
260C
Operating Ratings
PVIN to GND
AVIN to GND
Junction Temperature
θ
JA
1.5V to 5.5V
2.85V to 5.5V
40C to +125C
37.6C/W
Electrical Characteristics
Typicals and limits appearing in plain type apply for T
= T
= +25C. Limits appearing in
boldface
type apply over full Oper-
ating Junction Temperature Range (40C to +125C). Datasheet min/max specification limits are guaranteed by design, test,
or statistical analysis.
AVIN = PVIN = 5V unless otherwise indicated under the
Conditions
column.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
V
OUT
Voltage Tolerance
3
V
OUT
= 1.0V option
0.9775
1.1730
1.4663
1.7595
2.4437
3.2257
1.0225
1.2270
1.5337
1.8405
2.5563
3.3743
0.6
V
V
OUT
= 1.2V option
V
OUT
= 1.5V option
V
OUT
= 1.8V option
V
OUT
= 2.5V option
V
OUT
= 3.3V option
V
OUT
= 0.8V, 1.0V, 1.2V, 1.5V, 1.8V or
2.5V
2.85V
≤
AVIN
≤
5.5V
V
OUT
= 3.3V
3.5V
≤
AVIN
≤
5.5V
Normal operation
Rising
Falling Hysteresis
Isw = 2A
V
OUT
/
AVIN
Line Regulation
3
0.2
%
0.2
0.6
%
V
OUT
/
I
O
V
ON
Load Regulation
UVLO Threshold
(AVIN)
8
mV/A
V
mV
m
2.47
150
75
2.85
210
140
85
r
DSON-P
PFET On
Resistance
NFET On
Resistance
Soft-start
resistance
Peak Current Limit
Threshold
Operating Current
Shut Down
Quiescent Current
Sense pin
resistance
r
DSON-N
Isw = 2A
55
120
m
R
SS
400
k
I
CL
2.25
3
3.65
A
I
Q
I
SD
Non-switching
EN = 0V
0.85
10
2
mA
μA
25
R
SNS
400
k
PWM
f
osc
LM2852X
LM2852Y
Duty Cycle Range
1500kHz option.
500kHz option.
TBD
325
0
1500
500
TBD
625
100
kHz
kHz
%
D
range
L
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相關(guān)PDF資料
PDF描述
LM2852XMXA-1.0 2A 500/1500kHz SIMPLE SYNCHRONOUS Buck Regulator
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