参数资料
型号: MAX1599ETA+T
厂商: Maxim Integrated
文件页数: 3/10页
文件大小: 0K
描述: IC LED DRIVR WHITE BCKLGT 8-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
恒定电流:
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 400kHz ~ 600kHz
电源电压: 2.6 V ~ 5.5 V
输出电压: 26V
安装类型: 表面贴装
封装/外壳: 8-WDFN 裸露焊盘
供应商设备封装: 8-TDFN-EP(3x3)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
ELECTRICAL CHARACTERISTICS (continued)
(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.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
N-CHANNEL SWITCH
LX On-Resistance
I LX = 190mA
1.45
2.25
?
LX Leakage Current
LX Current Limit
V LX = 28V, CTRL = GND
Duty cycle = 90%
T A = +25 ° C
T A = +85 ° C
450
0.01
1
700
5
950
μA
mA
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 = -40°C to +85°C , unless other-
wise noted.) (Note 3)
PARAMETER
Supply Voltage
UVLO Threshold
Quiescent Current
OVLO Threshold
OUT Input Bias Current
Output Voltage Range
CONDITIONS
V IN rising or falling
No switching
V OUT rising
V OUT = 26V, V CTRL > 0.24V
V OUT = V IN , CTRL = GND
(Note 1)
MIN
2.6
2.10
26
10
(V IN - V D1 )
TYP
MAX
5.5
2.55
0.55
29
30
1
25.5
UNITS
V
V
mA
V
μA
V
ERROR AMPLIFIER
CTRL to CS Regulation
CTRL Input Resistance
CTRL Dual-Mode Threshold
V CTRL = 1V, V IN = 2.6V to 5.5V
V CTRL ≤ 1.0V
0.093
240
100
0.107
780
240
V
k ?
mV
CTRL Shutdown Enable Delay
CS-to-COMP Transconductance
(Note 2)
V COMP = 1.0V
MAX1561
MAX1599
6
13
32
11
22
85
ms
μS
OSCILLATOR
Operating Frequency
Maximum Duty Cycle
MAX1561
MAX1599
CTRL = IN, CS = GND
0.75
0.37
91
1.25
0.63
MHz
%
N-CHANNEL SWITCH
LX On-Resistance
2.25
?
LX Current Limit
Duty cycle = 90%
450
950
mA
Note 1: V D1 is the diode forward-voltage drop of diode D1 in Figure 1.
Note 2: Time from CTRL going below the dual-mode threshold to IC shutdown.
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
_______________________________________________________________________________________
3
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