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LM2707MFX データシート(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM2707MFX
部品情報  Inductive-Boost Series LED Driver with Programmable Oscillator Frequency
Download  19 Pages
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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)

LM2707MFX データシート(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN, FB, and EN pins
-0.3V to 7.5V
SW and V
OVP pins
-0.3V to 21V
Continuous Power Dissipation
(T
A =25
oC)
800mW
Switch Peak Current
400mA
Junction Temperature (T
J-MAX)
150oC
Storage Temperature Range
-65oC to +150o C
Maximum Lead Temperature
(Soldering)
(Note 3)
ESD Rating (Note 4)
Human Body Model:
Machine Model:
2kV
200V
Operating Ratings (Notes 1, 2)
Input Voltage Range
2.3V to 7.0V
Minimum C
X Capacitance
10pF
Junction Temperature (T
J) Range
-30˚C to +125˚C
Ambient Temperature (T
A) Range
(Note 5)
-30˚C to +85˚C
Thermal Properties
Juntion-to-Ambient Thermal
Resistance (
θ
JA) (Note 6)
125oC/W
Electrical Characteristics (Notes 2, 7)
Unless otherwise specified: V
IN = 3.0V, Lx = Open, VOVP = Open, VFB = GND, Cx = 300pF, VEN =VIN,TA = 25˚C.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Oscillator Frequency Programming (C
x pin)
I
chg
C
x Charging Current
V
Cx = 0.1V, VFB =1V
16
24
30
µA
I
dis
C
x Discharging Current
V
Cx = 1.0V, VFB =1V
35
52
65
µA
I
dis/Ichg
Charge and Discharge Current
Ratio
2.2
V
Cx, High
C
x Threshold Voltage +
810
860
910
mV
V
Cx, Low
C
x Threshold Voltage -
260
300
340
mV
V
OSC
C
X Oscillation Voltage
(V
Cx, High)-(VCx, Low)
520
560
600
mV
Current Limiting Comparator (L
x pin)
I
LIMIT
Inductor Current Limit
(Note 8)
220
260
300
mA
R
IN
Pin 1-2 Total Resistance
Measured between pin 1 and pin 2
380
440
500
m
R
SC
Internal Effective Resistance for
Inductor Current Limit Sence
(Notes 9, 10)
300
m
Output Switch Section (SW pin)
V
sw, DS
Output Transistor Drain-to-Source
Voltage
V
Cx = 0.1V, ISW = 200mA
0.12
0.22
V
R
DS-ON
Switch ON Resistance
R
DS-ON =Vsw,DS ÷ISW
V
Cx = 0.1V, ISW = 200mA
0.60
1.1
I
sw,Off
Output Transistor Off Leak Current
V
FB = 1V, VSW = 20V
0.01
2.0
µA
Feedback Comparator section (FB pin)
V
ref
Reference Voltage
0.495
0.515
0.535
V
I
FBin
FB Pin Output Current
V
FB = 0.4V
-0.2
-0.075
µA
Shutdown Section (EN pin)
V
EN, High
EN Input Voltage +
ON mode
1.2
7.0
V
V
EN, Low
EN Input Voltage -
Shutdown Mode
0.3
V
I
ENin
EN pin Input Bias Current
V
EN = 3.0V
25
40
µA
www.national.com
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