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High-Power Synchronous HBLED
Drivers with Rapid Current Pulsing
ABSOLUTE MAXIMUM RATINGS
IN to SGND.............................................................-0.3V to +30V
BST to SGND..........................................................-0.3V to +35V
BST to LX..................................................................-0.3V to +6V
DH to LX ...........................................-0.3V to (V BST - V LX ) + 0.3V
DL to PGND................................................-0.3V to (V DD + 0.3V)
V CC to SGND............................................................-0.3V to +6V
V CC , V DD to PGND ...................................................-0.3V to +6V
SGND to PGND .....................................................-0.3V to +0.3V
All Other Pins to SGND...............................-0.3V to (V CC + 0.3V)
Continuous Power Dissipation (T A = +70°C)
28-Pin TQFN 5mm x 5mm (derate 34.5mW/°C
above +70°C) ............................................................2758mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
V CC Current ......................................................................300mA
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 CC = 5V, V DD = V CC , T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input-Voltage Range
Quiescent Supply Current
V IN
I Q
Internal LDO on
Internal LDO off (V CC connected to V IN )
V EN = V CC or SGND, no switching
7
4.75
2.7
28
5.50
5.5
V
mA
LED CURRENT REGULATOR
V IN = V CC = 4.75V to 5.5V, f SW = 500kHz
(MAX16821A)
V IN = 7V to 28V, f SW = 500kHz
(MAX16821A)
0.594
0.594
0.600
0.600
0.606
0.606
Differential Set Value
(V SENSE + to V SENSE- ) (Note 2)
Soft-Start Time
t SS
V IN = V CC = 4.75V to 5.5V, f SW = 500kHz
(MAX16821B)
V IN = 7V to 28V, f SW = 500kHz
(MAX16821B)
V IN = V CC = 4.75V to 5.5V, f SW = 500kHz
(MAX16821C)
V IN = 7V to 28V, f SW = 500kHz
(MAX16821C)
0.098
0.098
0.028
0.028
0.100
0.100
0.030
0.030
1024
0.102
0.102
0.032
0.032
V
Clock
Cycles
STARTUP/INTERNAL REGULATOR
V CC Undervoltage Lockout (UVLO)
UVLO
V CC rising
4.1
4.3
4.5
V
UVLO Hysteresis
V CC falling
200
mV
V CC Output Voltage
V IN = 7V to 28V, I SOURCE = 0 to 60mA
4.85
5.10
5.30
V
MOSFET DRIVER
Output Driver Impedance
Output Driver Source/Sink Current
I DH , I DL
Low or high output, I SOURCE/SINK = 20mA
1.1
4
3
?
A
Nonoverlap Time
t NO
C DH/DL = 5nF
35
ns
2
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相关代理商/技术参数
MAX16821EVKIT+
制造商:Maxim Integrated Products 功能描述:HIGH-POWER SYNCHRONOUS HBLED DRIVER - Boxed Product (Development Kits)
MAX16822AASA/V+
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822AASA/V+T
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822AASA+
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822AASA+T
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822BASA+
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822BASA+T
功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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
MAX16822BEVKIT+
功能描述:LED 照明开发工具 MAX16822B Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
