Ultra-Efficient Negative Charge-Pump LED
Driver with Dual LDOs in 3mm x 3mm Thin QFN
Typical Operating Characteristics (continued)
(V IN = 3.6V, V EN_ = V IN , Circuit of Typical Operating Circuit, T A = +25°C, unless otherwise noted.)
LINE-TRANSIENT RESPONSE
(NO MODE CHANGE)
MAX8822 toc16
LINE-TRANSIENT RESPONSE
(MODE CHANGE)
MAX8822 toc17
V IN
I IN
I LED_TOTAL
3.7V
4.2V
500mV/div
(AC-COUPLED)
100mA/div
0mA
100mA/div
V IN
I IN
I LED_TOTAL
3.4V
3.8V
500mV/div
(AC-COUPLED)
100mA/div
0mA
100mA/div
I LED_ = 24mA
1ms/div
LDO1 LOAD TRANSIENT
MAX8822 toc18
0mA
I LED_ = 24mA
1ms/div
LDO2 LOAD TRANSIENT
MAX8822 toc19
0mA
V LDO1
I LDO1
20 μ s/div
V LDO1 = 2.8V
20mV/div
(AC-COUPLED)
150mA
50mA/div
10mA
V LDO2
I LDO2
20 μ s/div
V LDO2 = 1.8V
20mV/div
(AC-COUPLED)
150mA
50mA/div
10mA
POWER-SUPPLY REJECTION RATIO
80
70
60
50
40
30
20
10
0
vs. FREQUENCY
I OUT = 10mA
C OUT = 1 μ F
50 μ V/div
LDO OUTPUT NOISE
V LDO = 2.8V, I LDO = 28mA
0.01
0.1
1
10
100
1000
400 μ s/div
FREQUENCY (kHz)
6
_______________________________________________________________________________________
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相关代理商/技术参数
MAX882C/D 功能描述:低压差稳压器 - LDO 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
MAX882C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX882CPA 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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
MAX882CPA+ 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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
MAX882CSA 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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
MAX882CSA+ 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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
MAX882CSA+T 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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
MAX882CSA-T 功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA 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