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參數(shù)資料
| 型號： | LM3551SD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | 1A White LED Driver with Flash Timeout Protection |
| 中文描述： | LED DISPLAY DRIVER, QCC14 |
| 封裝： | 4 X 4 MM, LLP-24 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大?。?/td> | 756K |
| 代理商： | LM3551SD |
Electrical Characteristics
(Notes 2, 9) (Continued)
Limits in standard typeface are for T
= +25 C. Limits in boldface type apply over the full operating junction temperature range
(-40C
≤
T
J
≤
+110C). Unless otherwise noted, specifications apply to the LM3551 and LM3552 Typical Application Circuit (pg.
1) with: V
IN
= 3.6V, V(SD) = 0V for LM3551 and V(EN) = V
IN
for LM3552, I
LOAD
= 0A (Note 10)
Symbol
Parameter
Conditions
Output High
Output Low
Under Voltage Protection
Thresholds
Off Threshold
Over Voltage Protection
Thresholds
Off Threshold
V
FTO
Flash Timeout trip-point
I
FTO
Flash Timeout Current
V
SS
Soft-Start Voltage
I
SS
Soft-Start Current
Min
1.2
Typ
Max
Units
Th
T/F
T/F Pin Threshold
V
0.3
2.70
2.77
14
12
1.32
1.68
1.32
13
UVP
On Threshold
2.25
2.43
11
9.2
0.99
1.12
1.18
10
2.48
2.58
12.4
10.6
1.16
1.4
1.25
11.5
V
OVP
On Threshold
V
V
μA
V
μA
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of
the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the
Electrical Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J
=140
o
C (typ.) and disengages at
T
J
=120
o
C (typ.).
Note 4:
For detailed soldering specifications and information, please refer to National Semiconductor Application Note: AN-1187 for Recommended Soldering
Profiles.
Note 5:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin. (MIL-STD-883 3015.7)
Note 6:
Maximum recommended SW pin voltage when the OVP pin is grounded.
Note 7:
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be
derated. Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
= 110
o
C), the maximum power
dissipation of the device in the application (P
D-MAX
), and the junction-to-ambient thermal resistance of the part/package in the application (
θ
JA
), as given by the
following equation: T
A-MAX
= T
J-MAX-OP
– (
θ
JA
x P
D-MAX
).
Note 8:
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists,
special care must be paid to thermal dissipation issues in board design.
Note 9:
Min and Max limits are guaranteed by design, test, or statistical analysis. Typical (Typ) numbers are not guaranteed, but do represent the most likely norm.
Unless otherwise specified, conditions for Typ specifications are: V
IN
= 3.6V and T
A
= 25
o
C.
Note 10:
C
IN
and C
OUT
,: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics
Note 11:
Duty cycle affects current limit due to ramp generator.
Note 12:
Current limit at 0% duty cycle. See TYPICAL PERFORMANCE section for Switch Current Limit vs. V
IN
Note 13:
Bias current flows into FB pin.
L
www.national.com
4
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| LM3551SDX | 1A White LED Driver with Flash Timeout Protection |
| LM3552SD | 1A White LED Driver with Flash Timeout Protection |
| LM3552SDX | 1A White LED Driver with Flash Timeout Protection |
| LM3552 | 1A White LED Driver with Flash Timeout Protection |
| LM3551 | 1A White LED Driver with Flash Timeout Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3551SD | 制造商:Texas Instruments 功能描述:LED DRIVER BOOST POWERWISE LLP-14 |
| LM3551SD/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3551SDX | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3551SDX/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3552 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1A White LED Driver with Flash Timeout Protection |
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