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參數(shù)資料
| 型號： | MAX1554ETA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs |
| 中文描述： | LED DISPLAY DRIVER, DSO8 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MO229WEEC, TDFN-8 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 347K |
| 代理商： | MAX1554ETA |
M
High-Efficiency, 40V Step-Up
Converters for 2 to 10 White LEDs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
, FB, OV to GND..............................................-0.3V to +6.0V
LX to GND ..............................................................-0.3V to +45V
EN, BRT, SS to GND...................................-0.3V to (V
CC
+ 0.3V)
I
LX
...................................................................................0.9A
RMS
Continuous Power Dissipation (T
A
= +70°C)
8-Pin 3mm x 3mm TDFN
(derate 24.4mW/°C above +70°C).............................1951mW
ELECTRICAL CHARACTERISTICS
(V
CC
= 3.3V, V
OV
= 0V, C
OUT
= 1μF, R
SENSE
= 10
,
T
A
= 0°C to +85°C
, unless otherwise 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.
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
2.7
3.15
2.35
TYP
MAX
5.5
5.50
2.65
0.65
0.9
1
UNITS
MAX1553
MAX1554
V
CC
rising or falling, 35mV hysteresis typical
Not switching
Switching
T
A
= +25
°
C
V
EN
= 0V
T
A
= +85
°
C
Rising edge
T
A
= +25
°
C
V
OV
= 1V
T
A
= +85
°
C
0 < V
BRT
< 1.5V, EN = V
CC
Supply Voltage
V
Undervoltage Lockout Threshold
2.5
0.33
0.44
0.1
1
1.25
1
10
400
V
Quiescent Current
mA
Shutdown Supply Current
μA
OV Threshold
1.18
1.33
200
V
OV Input Bias Current
nA
BRT Input Resistance
TIMING CONTROL
Maximum On-Time
On-Time Constant (K)
Minimum Off-Time
ERROR AMPLIFIER
200
600
k
V
CC
= 3.3V
t
ON
= K / V
CC
2.0
3.4
6.3
250
4.8
μs
μs-V
ns
150
350
V
BRT
= 1.25V
V
BRT
= 3.3V
192
203
280
15
100
212
FB Threshold
mV
T
A
= +25
°
C
T
A
= +85
°
C
200
FB Input Bias Current
V
FB
= 1.0V
nA
N-CHANNEL SWITCH
LX On-Resistance
0.8
1.4
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