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參數(shù)資料
| 型號： | LM27961 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| 中文描述： | 雙顯示器白光LED驅(qū)動3/2x開關(guān)電容升壓 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 711K |
| 代理商： | LM27961 |
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
pin voltage
ENA, ENB pin voltages
-0.3V to 7.1V
-0.3V to (V
IN
+0.3V)
w/ 6.0V max
I
Dxx
Pin Voltages
-0.3V to
(V
POUT
+0.3V)
w/ 6.0V max
Internally Limited
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
J-MAX
)
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10 sec.)
ESD Rating (Note 4)
Human Body Model - I
Dxx
Pins:
Human Body Model - All other Pins:
Machine Model - I
Dxx
Pins:
Machine Model - All Other Pins:
150
o
C
-65
o
C to +150
o
C
265
o
C
1.0kV
2.0kV
100V
200V
Operating Rating
(Notes 1, 2)
Input Voltage Range
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
(Note 5)
2.7V to 5.5V
-30C to +125C
-30C to +85C
Thermal Properties
Juntion-to-Ambient Thermal
Resistance (
θ
JA
), (Note 6)
100C/W
Electrical Characteristics
(Notes 2, 7)
Limits in standard typeface are for T
J
= 25C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V
= 3.6V; V
DxA
= 0.6V; V
DxB
= 3.6V; ENA = 1.5V and ENB = GND, or ENA = GND and ENB =
1.5V; R
SETA
= R
SETB
= 8.35k
; C
, C
, and C
= 1μF. Specifications related to output current(s) and current setting
pins (I
Dxx
SETx
) apply to both Group A and Group B. (Note 8)
Symbol
Parameter
3.0V
≤
V
IN
≤
4.2V, and V
IN
= 5.5V
0.45V
≤
V
DxA
≤
3.8V or
2.5V
≤
V
DxB
≤
3.8V;
R
SET
= 8.35k
3.0V
≤
V
IN
≤
5.5V;
0.6V
≤
V
DxA
≤
3.8V or
2.5V
≤
V
DxB
≤
3.8V;
R
SET
= 6.25k
3.0V
≤
V
IN
≤
5.5V;
0.3V
≤
V
DxA
≤
3.8V or
2.5V
≤
V
DxB
≤
3.8V;
R
SET
= 12.5k
2.7V
≤
V
IN
≤
3.0V;
0.45V
≤
V
DxA
≤
3.8V or
2.5V
≤
V
DxB
≤
3.8V;
R
SET
= 8.35k
I
Dxx-MATCH
Current Matching Between Any
Two Group A Outputs or Group
B Outputs
I
Q
Quiescent Supply Current
2.7V
≤
V
IN
≤
4.2V;
No Load Current,
ENA or ENB = ON
I
SD
Shutdown Supply Current
2.7V
≤
V
IN
≤
5.5V,
ENA and ENB = OFF
V
SET
I
SET
Pin Voltage
2.7V
≤
V
IN
≤
5.5V
I
Dxx
/I
SET
Output Current to Current Set
Ratio
Condition
Min
Typ
Max
Units
I
Dxx
Output Current Regulation
13.5
(-10%)
15
16.5
(+10%)
mA
(%)
20
mA
10
mA
15
mA
V
IN
= 3.0V (Note 9)
0.6
%
4.4
6.75
mA
2.3
5
μA
1.25
100
V
L
www.national.com
3
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