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LM2852YMXA-1.5 데이터시트(PDF) 4 Page - Texas Instruments

부품명 LM2852YMXA-1.5
상세설명  LM2852 2A 500/1500kHz Synchronous SIMPLE SWITCHER짰 Buck Regulator
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홈페이지  http://www.ti.com
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LM2852YMXA-1.5 데이터시트(HTML) 4 Page - Texas Instruments

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LM2852
SNVS325D – JANUARY 2005 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics
AVIN = PVIN = 5V unless otherwise indicated under the Conditions column. Limits in standard type are for TJ = 25°C only;
limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are
ensured 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.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
VOUT
VOUT = 0.8V option
0.782
0.818
VOUT = 1.0V option
0.9775
1.0225
VOUT = 1.2V option
1.1730
1.2270
VOUT = 1.5V option
1.4663
1.5337
Voltage
V
Tolerance(1)
VOUT = 1.8V option
1.7595
1.8405
VOUT = 2.5V option
2.4437
2.5563
VOUT = 3.0V option
2.9325
3.0675
VOUT = 3.3V option
3.2257
3.3743
ΔVOUT/ΔAVIN
VOUT = 0.8V, 1.0V, 1.2V, 1.5V, 1.8V or 2.5V
0.2
0.6
%
2.85V
≤ AVIN ≤ 5.5V
Line Regulation(1)
VOUT = 3.3V
0.2
0.6
%
3.5V
≤ AVIN ≤ 5.5V
ΔVOUT/ΔIO
Load Regulation
Normal operation
8
mV/A
VON
Rising
2.47
2.85
V
UVLO Threshold
(AVIN)
Falling Hysteresis
85
150
210
mV
rDSON-P
PFET On
Isw = 2A
75
140
m
Resistance
rDSON-N
NFET On
Isw = 2A
55
120
m
Resistance
RSS
Soft-start resistance
400
k
ICL
LM2852X
2.75
4
4.95
Peak Current Limit
A
Threshold
LM2852Y
2.25
3
3.65
IQ
Operating Current
Non-switching
0.85
2
mA
ISD
Shutdown Quiescent
EN = 0V
10
25
µA
Current
RSNS
Sense pin resistance
400
k
PWM
fosc
LM2852X
1500kHz option.
1050
1500
1825
kHz
LM2852Y
500kHz option.
325
500
625
kHz
Drange
Duty Cycle Range
0
100
%
ENABLE CONTROL(2)
VIH
EN Pin Minimum
% of
75
High Input
AVIN
VIL
EN Pin Maximum
% of
25
Low Input
AVIN
IEN
EN Pin Pullup
EN = 0V
1.2
µA
Current
THERMAL CONTROLS
TSD
TJ for Thermal
165
°C
Shutdown
TSD-HYS
Hysteresis for
10
°C
Thermal Shutdown
(1)
VOUT measured in a non-switching, closed-loop configuration at the SNS pin.
(2)
The enable pin is internally pulled up, so the LM2852 is automatically enabled unless an external enable voltage is applied.
4
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