lm2707 National Semiconductor Corporation, lm2707 Datasheet - Page 3

• Manufacturer Part Number: lm2707
• Description: Inductive-boost Series Led Driver With Programmable Oscillator Frequency
• Manufacturer: National Semiconductor Corporation

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