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LM3501 Dane(HTML) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numer części LM3501
Szczegółowy opis  Synchronous Step-up DC/DC Converter for White LED Applications
Pobierz  18 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3501 Datasheet(Arkusz danych) 4 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
Specifications in standard type face are for T
A = 25˚C and those in boldface type apply over the Operating Temperature
Range of T
A = −10˚C to +85˚C. Unless otherwise specified VIN = 2.7V and specifications apply to both LM3501-16 and
LM3501-21.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 7)
Max
(Note 6)
Units
I
SD
SHDN Pin Current (Note 9)
SHDN = 5.5V
1.8
4
µA
SHDN = 2.7V
1
2.5
SHDN = GND
0.1
I
CNTRL
CNTRL Pin Current (Note 9)
V
CNTRL = 2.7V
10
20
µA
V
CNTRL =1V
4
15
I
L
Switch Leakage Current
(LM3501-16)
V
SW = 15V
0.01
0.5
µA
Switch Leakage Current
(LM3501-21)
V
SW = 20V
0.01
2.0
UVP
Input Undervoltage Lockout
ON Threshold
2.4
2.5
2.6
V
OFF Threshold
2.3
2.4
2.5
OVP
Output Overvoltage Protection
(LM3501-16)
ON Threshold
15
15.5
16
V
OFF Threshold
14
14.6
15
Output Overvoltage Protection
(LM3501-21)
ON Threshold
20
20.5
21
V
OFF Threshold
19
19.5
20
I
Vout
V
OUT Bias Current
(LM3501-16)
V
OUT = 15V, SHDN = 1.5V
260
400
µA
V
OUT Bias Current
(LM3501-21)
V
OUT = 20V, SHDN = 1.5V
300
460
I
VL
PMOS Switch Leakage Current
(LM3501-16)
V
OUT = 15V, VSW =0V
0.01
3
µA
PMOS Switch Leakage Current
(LM3501-21)
V
OUT = 20V, VSW =0V
0.01
3
CNTRL
Threshold
LED power off
75
mV
LED power on
125
SHDN
Threshold
SHDN low
0.65
0.3
V
SHDN High
1.1
0.65
Specifications in standard type face are for T
J = 25˚C and those in boldface type apply over the full Operating Temperature
Range (T
J = −40˚C to +125˚C). Unless otherwise specified VIN =2.7V and specifications apply to both LM3501-16 and
LM3501-21.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 7)
Max
(Note 6)
Units
I
Q
Quiescent Current, Device Not
Switching
FB > 0.54V
0.95
1.2
mA
Quiescent Current, Device
Switching
FB=0V
2
2.5
Shutdown
SHDN = 0V
0.1
2
µA
V
FB
Feedback Voltage
CNTRL = 2.7V, V
IN = 2.7V to 7V
0.485
0.515
0.545
V
CNTRL = 1V, V
IN = 2.7V to 7V
0.14
0.19
0.24
∆V
FB
Feedback Voltage Line
Regulation
V
IN = 2.7V to 7V
0.1
0.5
%/V
I
CL
Switch Current Limit
(LM3501-16)
V
IN = 3.0V,
Duty Cycle = 70%
400
mA
Switch Current Limit
(LM3501-21)
V
IN = 3.0V,
Duty Cycle = 63%
670
I
B
FB Pin Bias Current
FB = 0.5V (Note 8)
45
200
nA
V
IN
Input Voltage Range
2.7
7.0
V
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