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參數(shù)資料
| 型號(hào)： | LM3519 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | High Frequency Boost White LED Driver with High-Speed PWM Brightness Control |
| 中文描述： | 高頻升壓白光LED驅(qū)動(dòng)器，高速PWM亮度控制 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 1385K |
| 代理商： | LM3519 |
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
, En, & LED_rtn Pin
V
OUT
, Sw Pin
Maximum Junction Temperature
(T
J-MAX
)
Storage Temperature Range
0.3V to +6.5V
0.3V to +21V
+150C
65C to +150C
ESD Rating (Note 2)
Human Body Model:
Machine Model:
2kV
200V
Operating Ratings
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
Input Voltage Range
40C to +125C
40C to +85C
2.7V to 5.5V
Thermal Properties
(Note 4)
Junction-to-Ambient Thermal Resistance (
θ
JA
)
220C/W
Electrical Characteristics
apply over the full operating junction temperature range (40C
≤
T
J
≤
+125C). V
IN
= 3.6V, unless otherwise stated.
(Note 5) Limits in standard typeface are for T
J
= +25C. Limits in
bold typeface
Symbol
Parameter
Conditions
Min
Typ
0.1
360
Max
Units
I
Q
Supply Current
Shutdown: V
EN
= 0V
Not Switching: V
EN
= 1.8V
Switching: V
EN
= 1.8V,
LED_rtn current = 30mA
V
IN
= 3.6V, 2.2μH,
4LEDs
OVP ON
OVP OFF
L = 2.2μH
μA
500
550
900
I
LED(TOL)
LED Current
Tolerance/Variation
Over-Voltage Protection
Threshold
Switch Current Limit
Power NMOS Switch ON
Resistance
Switch Leakage
LED_rtn NMOS Switch
ON Resistance
Switching Frequency
–10
5.5
10
%
OVP
18
17.8
18.9
18.6
750
20
19.8
V
I
LIM
R
DS(ON)
mA
455
m
I
LEAKAGE
R
LED_rtn(ON)
V
SW
= 3.6V, V
EN
= 0V
0.1
2
μA
8.0
F
S
I
LED
= 20 mA , L = 1μH
4LEDs
V
EN
= 0V
V
EN
= 1.8V
Device On
Device Off
5.4
MHz
I
EN
Enable Pin Bias Current
(Note 3)
Enable Threshold
0.1
1.1
2
μA
En
0.9
0.3
V
Note 1:
Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is guaranteed. Operating Ratings do not imply guaranteed limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics table.
Note 2:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin. The machine model is a 200pF capacitor discharged directly
into each pin.
Note 3:
Current flows into the pin.
Note 4:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(MAX), the junction-to-ambient thermal resistance,
θ
JA
,
and the ambient temperature, T
A
. See Thermal Properties for the thermal resistance. The maximum allowable power dissipation at any ambient temperature is
calculated using: P
D
(MAX) = (T
J
(MAX) – T
A
)/
θ
JA
. Exceeding the maximum allowable power dissipation will cause excessive die temperature.
Note 5:
Min and max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
L
www.national.com
3
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| LM3519MKX-20 | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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