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参数资料
型号： MAX1570ETE+
厂商： Maxim Integrated
文件页数： 3/11页
文件大小： 0K
描述： IC LED DRVR WHITE BCKLGT 16-TQFN
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 75
恒定电流： 是
拓扑： PWM，降压（降压），升压（升压），切换式电容器（充电泵）
输出数： 5
内部驱动器： 是
类型 - 主要： 背光
类型 - 次要： 白色 LED
频率： 1MHz
电源电压： 2.7 V ~ 5.5 V
安装类型： 表面贴装
封装/外壳： 16-WQFN 裸露焊盘
供应商设备封装： 16-TQFN-EP（4x4）
包装： 管件
工作温度： -40°C ~ 85°C
White LED Current Regulator with 1x/1.5x
High-Efficiency Charge Pump
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 3.6V, GND = PGND = 0, EN1 = EN2 = IN, C IN = C1 = C2 = 1μF, C OUT = 4.7μF, T A = 0°C to +85°C , unless otherwise noted.
Typical values are at T A = +25°C.)
PARAMETER
LED1 Dual Mode? Threshold
CONDITIONS
MIN
50
TYP
75
MAX
100
UNITS
mV
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
160
20
°C
°C
ELECTRICAL CHARACTERISTICS
(V IN = 3.6V, GND = PGND = 0, EN1 = EN2 = IN, C IN = C1 = C2 = 1μF, C OUT = 4.7μF, T A = -40°C to +85°C , unless otherwise noted.)
(Note 3)
PARAMETER
IN Operating Voltage
Undervoltage Lockout Threshold
Supply Current
Shutdown Supply Current
SET Bias Voltage
CONDITIONS
V IN rising or falling
1MHz switching, no load
EN1 = EN2 = GND
EN1 = GND, EN2 = IN, I SET = 33μA
EN1 = IN, EN2 = GND, I SET = 67μA
EN1 = IN, EN2 = IN, I SET = 100μA
MIN
2.7
2.25
0.190
0.380
0.570
MAX
5.5
2.60
3.5
5
0.210
0.420
0.630
UNITS
V
V
mA
μA
V
SET Leakage in Shutdown
SET Current Range
EN1 = EN2 = GND, V IN = 5.5V, V SET = 0 or 5.5V
20
1
130
μA
μA
SET to LED_ Current Ratio
LED_ to LED_ Current Matching
Maximum LED_ Sink Current
I LED /I SET , I SET = 67μA, V LED_ = 1V
I SET = 67μA, V LED_ = 1V
I SET = 130μA, V LED_ = 1V
215
-3
28
250
+3
A/A
%
mA
I SET = 33μA (Note 1)
180
LED_ Dropout Voltage
I SET = 67μA (Note 2)
I SET = 100μA (Note 2)
360
410
mV
LED1 Regulation Voltage
(1.5x Mode)
EN1 = GND, EN2 = IN, I SET = 33μA
EN1 = IN, EN2 = GND, I SET = 67μA
EN1 = IN, EN2 = IN, I SET = 100μA
185
277
360
215
323
440
mV
LED Leakage in Shutdown
Maximum OUT Current
Open-Loop OUT Resistance
EN1, EN2 High Voltage
EN1, EN2 Low Voltage
EN1, EN2 Input Current
EN1 = GND, EN2 = GND, V LED_ = 5.5V
IN ≥ 3.4V, OUT ≥ 3.9V
1x mode (V IN - V OUT )/I OUT
1.5x mode (1.5V IN - V OUT )/I OUT
IN = 2.7V to 5.5V
IN = 2.7V to 5.5V
EN_ = GND or 5.5V
150
1.6
1
1.75
8
0.4
1
μA
mA
?
V
V
μA
LED1 Dual Mode Threshold
50
100
mV
Note 1: Dropout voltage is defined as the LED_ to GND voltage at which current sink into LED_ drops 20% from the value at LED_ = 1V.
Note 2: Dropout voltage is defined as the LED_ to GND voltage at which current sink into LED_ drops 10% from the value at LED_ = 1V.
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
Dual Mode is a trademark of Maxim Integrated Products, Inc.
_______________________________________________________________________________________
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