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LP3972 数据表(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部件名 LP3972
功能描述  Power Management Unit for Advanced Application Processors
PDF  59 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LP3972 数据表(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
www.national.com
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