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參數(shù)資料
| 型號： | LM3502 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Step-Up Converter for White LED Applications |
| 中文描述： | 升壓轉(zhuǎn)換器的白色發(fā)光二極管應(yīng)用 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 928K |
| 代理商： | LM3502 |
Absolute Maximum Ratings
(Notes 6, 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
Pin
Sw Pin
Fb Pin
Cntrl Pin
V
OUT1
Pin
V
OUT2
Pin
En1
En2
Continuous Power Dissipation
Maximum Junction Temperature
(T
J-MAX)
Storage Temperature Range
0.3V to +5.5V
0.3V to +48V
0.3V to +5.5V
0.3V to +5.5V
0.3V to +48V
0.3V to V
OUT1
0.3V to +5.5V
0.3V to +5.5V
Internally Limited
+150C
65C to +150C
ESD Rating (Note 2)
Human Body Model:
Machine Model:
2 kV
200V
Operating Conditions
(Notes 1, 6)
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
Input Voltage, V
IN
Pin
Cntrl, En1, and En2 Pins
40C to +125C
40C to +85C
2.5V to 5.5V
0V to 5.5V
Thermal Properties
(Note 4)
Junction-to-Ambient Thermal Resistance (
θ
JA
)
Micro SMD Package
Leadless Leadframe Package
65C/W
49C/W
Preliminary Electrical Characteristics
(Notes 6, 7)
Limits in
bold typeface
apply over the full operating junction temperature range (40C
≤
T
J
≤
+125C). Unless otherwise
specified, V
IN
= 2.5V.
Limits in standard typeface are for T
J
= 25C.
Symbol
V
IN
I
Q
Parameter
Conditions
Min
2.5
Typ
Max
5.5
1
3
3
15
0.3
650
800
1050
1050
Units
V
mA
mA
μA
μA
V
Input Voltage
Non-Switching
Switching
Shutdown
Low I
Q
Shutdown
Feedback Voltage
NMOS Power Switch
Current Limit
Fb
>
0.25V
Fb = 0V, Sw Is Floating
Cntrl = 0V
Cntrl = 1.5V, En1 = En2 = 0V
0.5
1.9
0.1
6
0.25
400
600
750
750
V
Fb
I
CL
0.18
250
400
450
450
16, Fb = 0V
25, Fb = 0V
35, Fb = 0V
44, Fb = 0V
Fb = 0.25V
mA
I
Fb
Feedback Pin Bias
Current (Note 8)
Switching Frequency
NMOS Power Switch
ON Resistance
(
Figure 2
: N1)
PMOS ON Resistance
of V
OUT1
/V
OUT2
Switch
(
Figure 2
: N1)
NMOS ON Resistance
of V
OUT2
/Fb Switch
(
Figure 2
: N2)
Maximum Duty Cycle
Cntrl Pin Input Bias
Current (Note 3)
Sw Pin Leakage
Current (Note 3)
64
500
nA
F
S
R
DS(ON)
0.8
1
1.2
MHz
I
Sw
= 500 mA
0.55
1.1
R
PDS(ON)
I
PMOS
= 20 mA, En1 = 0V, En2 = 1.5V
5
10
R
NDS(ON)
I
NMOS
= 20 mA, En1 = 1.5V, En2 = 0V
2.5
5
D
MAX
I
Cntrl
Fb = 0V
Cntrl = 2.5V
Cntrl = 0V
Sw = 42V, Cntrl = 0V
90
95
7
0.1
%
14
μA
I
Sw
0.01
5
μA
I
V
OUT1
(OFF) V
OUT1
Pin Leakage
Current (Note 3)
V
OUT1
= 14V, Cntrl = 0V (16)
V
OUT1
= 23V, Cntrl = 0V (25)
V
OUT1
= 32V, Cntrl = 0V (35)
V
OUT1
= 42V, Cntrl = 0V (44)
0.1
0.1
0.1
0.1
3
3
3
3
μA
L
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| LM3502_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Step-Up Converter for White LED Applications |
| LM3502ITL/NOPB | 制造商:Texas Instruments 功能描述: |
| LM3502ITL-16 | 制造商:Texas Instruments 功能描述:WLED DRIVER 16V POWERWISE LLP-16 |
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