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LM2716 データシート(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM2716
部品情報  Dual (Step-up and Step-down) PWM DC/DC Converter
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2716 データシート(HTML) 5 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.
V
IN
−0.3V to 22V
SW1 Voltage
−0.3V to 22V
SW2 Voltage
−0.3V to 22V
FB1 Voltage
−0.3V to 7V
FB2 Voltage
−0.3V to 7V
V
C1 Voltage
1.75V
≤ V
C1
≤ 2.25V
V
C2 Voltage
0.965V
≤ V
C2
≤ 1.565V
SHDN1 Voltage
−0.3V to 7.5V
SHDN2 Voltage
−0.3V to 7.5V
SS1 Voltage
−0.3V to 2.1V
SS2 Voltage
−0.3V to 0.6V
FSLCT Voltage
AGND to 5V
CB1 Voltage
V
IN +7V(VIN =VSW)
Maximum Junction Temperature
150˚C
Power Dissipation(Note 2)
Internally Limited
Lead Temperature
300˚C
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
ESD Susceptibility (Note 3)
Human Body Model
2kV
Machine Model
200V
Operating Conditions
Operating Junction
Temperature Range
(Note 4)
−40˚C to +125˚C
Storage Temperature
−65˚C to +150˚C
Supply Voltage
4V to 20V
SW1 Voltage
20V
SW2 Voltage
20V
Electrical Characteristics
Specifications in standard type face are for T
J = 25˚C and those with boldface type apply over the full Operating Tempera-
ture Range (T
J = −40˚C to +125˚C) Unless otherwise specified. VIN = 5V and IL = 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 4)
Typ
(Note 5)
Max
(Note 4)
Units
I
Q
Total Quiescent Current (both
switchers)
Not Switching
2.8
3.5
mA
Switching, switch open
4
4.5
mA
V
SHDN =0V
9
15
µA
V
BG
Bandgap Voltage
1.235
1.26
1.285
V
I
CL1(Note 6)
Buck Switch Current Limit
95% Duty Cycle (Note 7)
1.8
A
I
CL2(Note 6)
Boost Switch Current Limit
95% Duty Cycle (Note 7)
3.6
A
I
FB1
Buck FB Pin Bias Current
(Note 8)
V
FB1 = 3.3V
65
75
µA
I
FB2
Boost FB Pin Bias Current
(Note 8)
V
FB2 = 1.265V
27
55
nA
V
IN
Input Voltage Range
420
V
g
m1
Buck Error Amp
Transconductance
∆I = 20µA
1200
µmho
g
m2
Boost Error Amp
Transconductance
∆I = 5µA
175
µmho
A
V1
Buck Error Amp Voltage Gain
100
V/V
A
V2
Boost Error Amp Voltage
Gain
135
V/V
D
MAX
Maximum Duty Cycle
90
95
98
%
F
SW
Switching Frequency
R
F = 47.5k
250
300
350
kHz
R
F = 22.6k
500
600
700
kHz
I
SHDN1
Buck Shutdown Pin Current
0V < V
SHDN1 < 7.5V
−5
5
µA
I
SHDN2
Boost Shutdown Pin Current
0V < V
SHDN2 < 7.5V
−5
5
µA
I
L1
Buck Switch Leakage Current V
DS = 20V
0.2
5
µA
I
L2
Boost Switch Leakage
Current
V
DS = 20V
0.2
3
µA
R
DSON1
Buck Switch R
DSON
160
m
R
DSON2
Boost Switch R
DSON
120
m
www.national.com
5


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