參數(shù)資料
型號(hào): LT3467
廠商: Linear Technology Corporation
英文描述: 1A Low Noise High Current LED Charge Pump with Independent Torch/Flash Current Control
中文描述: 第1A低噪聲大電流LED的獨(dú)立火炬電荷泵/閃光電流控制
文件頁數(shù): 3/12頁
文件大?。?/td> 102K
代理商: LT3467
LTC 3216
3
3216fa
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Based on long-term current density limitations. Assumes an
operating duty cycle of
10% under absolute maximum conditions for
durations less than 10 seconds. Max current for continuous operation is
500mA.
Note 3:
The LTC3216E is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 3.6V, C
IN
= C1 = C2 = 2.2
μ
F, C
CPO
= 4.7
μ
F
TYPICAL PERFOR A CE CHARACTERISTICS
U
I
LED
Dropout Voltage
vs LED Current
I
LED
Pin Current
vs I
LED
Pin Voltage
I
LED
vs R
SET
LED CURRENT (mA)
0
200
D
400
800
600
1000
3216 G01
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I
LED
PIN VOLTAGE (V)
0
I
L
600
500
400
300
200
100
0
0.2
0.4
0.6
0.8
3216 G02
1.0
TEMPERATURE (
°
C)
–40
O
)
10
60
85
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3216 G05
–15
35
–40
10
60
85
–15
35
TEMPERATURE (
°
C)
O
)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3216 G06
I
LED
= 500mA
400mA
300mA
200mA
100mA
V
IN
= 3V
V
CPO
= 4.2V
C
IN
= C1 = C2 = 2.2
μ
F
C
CPO
= 4.7
μ
F
V
IN
= 3V
V
CPO
= 4.8V
C
IN
= C1 = C2 = 2.2
μ
F
C
CPO
= 4.7
μ
F
TEMPERATURE (
°
C)
–40
S
)
35
85
3216 G07
–15
10
60
0.31
0.29
0.27
0.25
0.23
0.21
0.19
0.17
0.15
I
CPO
= 200mA
V
IN
= 3.6V
V
IN
= 3.3V
V
IN
= 3.9V
V
IN
= 3.6V
R
SET
(k
)
I
L
1573 G06
1200
1000
800
600
400
200
00
10
20
25
5
15
30
35
40
1.5x Mode Charge Pump
Open-Loop Output Resistance
(1.5V
IN
– V
CPO
)/I
CPO
vs Temperature
2x Mode Charge Pump
Open-Loop Output Resistance
(2V
IN
– V
CPO
)/I
CPO
vs Temperature
1x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
PARAMETER
I
SET1
, I
SET2
V
ISET1
, V
ISET2
I
ISET1
, I
ISET2
CONDITIONS
MIN
TYP
MAX
UNITS
I
SETX
= 50
μ
A
G
1.195
1.22
1.245
321
V
G
μ
A
T
A
= 25
°
C unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
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