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LP3972 bảng dữ liệu(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LP3972
Giải thích chi tiết về linh kiện  Power Management Unit for Advanced Application Processors
PDF  59 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LP3972 bảng dữ liệu(HTML) 8 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.
All Inputs
−0.3V to +6.5V
GND to GND SLUG
±0.3V
Junction Temperature (T
J-MAX)
150˚C
Storage Temperature
−65˚C to +150˚C
Power Dissipation
(T
A = 70˚C) (Note 3)
3.2W
Junction-to-Ambient Thermal
Resistance
θ
JA (Note 3)
25˚C/W
Maximum Lead Temp (Soldering)
260˚C
ESD Rating (Note 5)
Human Body Model
2 kV
Machine Model
200V
Operating Ratings
V
IN LDO 4,5
2.7V to 5.5V
V
EN
1.74 to (V
IN
Junction Temperature (T
J)
−40˚C to +125˚C
Operating Temperature (T
A)
−40˚C to +85˚C
Maximum Power Dissipation
(T
A = 70˚C) (Notes 3, 4)
2.2W
General Electrical Characteristics Typical values and limits appearing in normal type apply for
T
J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40˚C to +125˚C.
(Notes 2, 6)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN, VDDA, VIN Buck1, 2 and 3
Battery Voltage
2.7
3.6
5.5
V
V
INLDO4, VINLDO5
Power Supply for LDO 4 and 5
1.74
3.6
5.5
V
T
SD
Thermal Shutdown (Note 14)
Temperature
160
˚C
Hysteresis
20
**No input supply should be higher then VDDA
Supply Specifications (Notes 2, 5)
Supply
V
OUT (Volts)
I
MAX
Maximum Current
Range
Resolution
Current (mA)
(V)
(mV)
LDO_RTC
2.8V
N/A
30 mA dc source 10 mA backup
source
LDO1 (V
CC_MVT)
1.7 to 2.0
25
300
LDO2
1.8 to 3.3
100
150
LDO3
1.8 to 3.3
100
150
LDO4
1.0 to 3.3
50-600
150
LDO5 (V
CC_SRAM)
0.850 to 1.5
25
400
BUCK 1 (V
CC_APPS)
0.725 to 1.5
25
1600
BUCK 2
0.8 to 3.3
50-600
1600
BUCK 3
0.8 to 3.3
50-600
1600
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