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| 型号： | MAX8645XETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），切换式电容器（充电泵） |
| 输出数： | 8 |
| 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 |
| 输出电压： | 5.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
1x/1.5x/2x White LED Charge Pumps with Two
LDOs in 4mm x 4mm TQFN
ABSOLUTE MAXIMUM RATINGS
PIN, IN, OUT, REFBP to GND................................-0.3V to +6.0V
SETF, SETM, ENLDO, ENM1, ENM2, ENF,
P1, P2, LDO1, LDO2 to GND....................-0.3V to (V IN + 0.3V)
M1, M2, M3, M4, M5, M6, F1,
F2 to GND.............................................-0.3V to (V OUT + 0.3V)
C1N, C2N to GND ......................................... -0.3V to (V IN + 1V)
C1P, C2P
to GND........ -0.3V to the greater of (V OUT + 1V) or (V IN + 1V)
OUT, LDO1, LDO2 Short Circuit to GND ...................Continuous
Continuous Power Dissipation (T A = +70°C)
28-Pin TQFN 4mm x 4mm
(derate 20.8mW/°C above +70°C) .............................1666mW
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
PGND to GND .......................................................-0.3V to +0.3V
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.
ELECTRICAL CHARACTERISTICS
(V IN = 3.6V, V GND = V PGND = 0V, ENM1 = ENM2 = ENF = IN, R SETM = R SETF = 6.8k Ω , P1 = P2 = unconnected, C REF = 0.01μF,
T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
IN Operating Voltage
Undervoltage-Lockout Threshold
V IN rising or falling
CONDITIONS
MIN
2.7
2.25
TYP
2.45
MAX
5.5
2.60
UNITS
V
V
Undervoltage-Lockout Hysteresis
1MHz switching, no load, 1.5x or 2x mode
130
4.0
5.5
mV
Supply Current
1x mode 10% setting, ENF = GND, V ENLDO = V IN ,
I LDO1 = I LDO2 = 0A
ENM1 = ENM2 = ENF = GND, V ENLDO = V IN ,
I LDO1 = I LDO2 = 0A
0.4
110
mA
μA
Shutdown Supply Current
ENM1 = ENM2 = ENF = ENLDO = GND
T A = +25°C
T A = +85°C
0.01
0.1
5
μA
EN_ High Voltage
EN_ Low Voltage
V IN = 2.7V to 5.5V
V IN = 2.7V to 5.5V
1.4
0.4
V
V
EN_ Input Current
ENM_ or ENF Low Shutdown
Delay t SHDN
ENM_ or ENF t LO
V EN_ = 0V or 5.5V
See Figure 1
See Figure 1
T A = +25°C
T A = +85°C
2.5
0.5
0.01
0.1
1
250.0
μA
ms
μs
ENM_ or ENF t HI
Initial ENM_ or ENF t HI
P1, P2 Shutdown Input Current
P1, P2 Input Impedance
See Figure 1
Only required for first ENM_ or ENF pulse; see Figure 1
0.5
200
1
150
μs
μs
μA
k Ω
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Temperature rising
+160
20
°C
°C
CHARGE PUMP
Overvoltage-Protection Threshold
Soft-Start Time
V OUT rising
5
2
V
ms
2
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|---|---|
| MAX8645YETI+ | 功能描述:LED照明驱动器 1x/1.5x/2x White LED Charge Pump RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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| MAX8645YEVKIT | 制造商:Maxim Integrated Products 功能描述:1X/1.5X/2X CHARGE PUMP WITH 6 LEDS - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX8646ETG+ | 功能描述:直流/直流开关调节器 6A 2MHz Step-Down Regulator w/Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX8646ETG+T | 功能描述:直流/直流开关调节器 6A 2MHz Step-Down Regulator w/Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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