Charge Pump for Backlight/Flash/RGB LEDs
with Safety Timer
Typical Operating Characteristics (continued)
(T A = +25°C, unless otherwise noted.)
STROBE STARTUP WAVEFORM
WITH MAIN ALREADY ON
MAX8879 toc15
MAIN BRIGHTNESS CHANGE
(1.9mA/LED TO 30mA/LED)
MAX8879 toc16
V FSH
V OUT
5V/div
1V/div
V SDA
5V/div
0
V OUT
1V/div
0
I IN
200mA/div
I OUT
100mA/div
1ms/div
LINE-TRANSIENT RESPONSE
(4V TO 3.3V TO 4V)
MAX8879 toc17
0
0
1ms/div
LINE-TRANSIENT RESPONSE WITH
MODE TRANSITION (3.3V TO 2.7V TO 3.3V)
MAX8879 toc18
V IN
V OUT
1V/div
4V
1V/div
V IN
V OUT
1V/div
4V
1V/div
200mA/div
I OUT
I OUT
200mA/div
100 μ s/div
RGB RAMP WAVEFORMS
(BLUE-TO-YELLOW TRANSITION)
MAX8879 toc19
0
MOVIE OR FLASH
MODE ACTIVE
100 μ s/div
RGB RAMP WAVEFORMS
(BLUE-TO-YELLOW TRANSITION)
MAX8879 toc20
0
I RED
FULL-BRIGHTNESS
1048ms RAMP TIME
20mA/div
I RED
HALF-BRIGHTNESS
DEFAULT RAMP TIME
10mA/div
0
0
I GREEN
20mA/div
I GREEN
10mA/div
I BLUE
200ms/div
0
20mA/div
0
I BLUE
40ms/div
0
10mA/div
0
6
_______________________________________________________________________________________
相关PDF资料
MAX8901BETA+TCH8 IC LED DRIVER WHITE BCKLGT 8TDFN
MAX8930EWJ+T IC LED DRVR WT/RGB BCKLGT 49WLP
MAXQ2000-KIT EVAL KIT FOR MAXQ2000
MAXQ610-KIT# EVALUATION KIT FOR MAXQ610
MB2146-401-01A KIT STARTER F2MC-8FX 3V
MB2146-401-03A KIT STARTER F2MC-8FX 5V
MB2146-410A-01-E KIT STARTER MB95200/210H SERIES
MB85R1001ANC-GE1 IC FRAM 1MBIT 150NS 48TSOP
相关代理商/技术参数
MAX887EVKIT 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX887 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX887HESA 功能描述:直流/直流开关转换器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX887HESA+ 功能描述:直流/直流开关转换器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX887HESA+T 功能描述:直流/直流开关转换器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX887HESA-T 功能描述:直流/直流开关转换器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX8880ETT 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX8880ETT+ 制造商:Maxim Integrated Products 功能描述:LDO REG 1.25V TO 5V 0.4A 6TDFN EP - Rail/Tube
MAX8880ETT+T 功能描述:低压差稳压器 - LDO 12V Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20