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參數(shù)資料
| 型號： | MAX1561 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency. 26V Step-Up Converters for Two to Six White LEDs |
| 中文描述： | 高效率、26V、升壓型轉(zhuǎn)換器，用于2到6只白光LED |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 245K |
| 代理商： | MAX1561 |
M
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN to GND.................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND.....................................................-0.3V to +30V
CTRL to GND...................-0.3V to the lower of +6V or (V
IN
+ 2V)
COMP, CS to GND.........................................-0.3 to (V
IN
+ 0.3V)
I
LX
.............................................................................................1A
ELECTRICAL CHARACTERISTICS
(V
IN
= 3V, V
OUT
= 20V, C
OUT
= 0.1μF, C
COMP
= 0.15μF, R
SENSE
= 7.5
, V
CTRL
= 1.5V, Figure 1,
T
A
= 0°C to +85°C
, unless other-
wise noted. Typical values are at T
A
= +25
°
C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70
°
C)
3mm x 3mm 8-Pin TDFN
(derate 24.4mW/
°
C above +70
°
C).............................1950mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
PARAMETER
CONDITIONS
MIN
2.6
2.10
TYP
MAX
5.5
2.55
UNITS
V
V
mV
mA
Supply Voltage
UVLO Threshold
UVLO Hysteresis
Quiescent Current
V
IN
rising or falling
2.38
40
0.38
0.3
1
27
2
20
0.01
No switching
0.55
2
T
A
= +25
°
C
T
A
= +85
°
C
Shutdown Supply Current
CTRL = GND, V
OUT
= V
IN
μA
OVLO Threshold
OVLO Hysteresis
V
OUT
rising
26
29
V
V
V
OUT
= 26V, V
CTRL
> 0.24V
V
OUT
= V
IN
, CTRL = GND
(Note 1)
10
30
1
25.5
OUT Input Bias Current
μA
Output Voltage Range
ERROR AMPLIFIER
CTRL to CS Regulation
(V
IN
- V
D1
)
V
V
CTRL
= 1V, V
IN
= 2.6V to 5.5V
0.095
0.100
0.01
0.03
500
170
5
8.2
16.4
50
0.105
1
V
T
A
= +25
°
C
T
A
= +85
°
C
CS Input Bias Current
V
CS
= V
CTRL
/10
μA
CTRL Input Resistance
CTRL Dual-Mode Threshold
CTRL Dual-Mode Hysteresis
V
CTRL
≤
1.0V
290
100
780
240
k
mV
mV
MAX1561
MAX1599
6.5
13.6
32
10.5
21.0
82
CTRL Shutdown Enable Delay
(Note 2)
ms
CS-to-COMP Transconductance
OSCILLATOR
V
COMP
= 1.0V
μS
MAX1561
MAX1599
PWM mode
Pulse skipping
CTRL = IN, CS = GND
0.80
0.4
1.0
0.5
12
0
94
1.25
0.6
Operating Frequency
MHz
Minimum Duty Cycle
%
Maximum Duty Cycle
91
%
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