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Ultra-Efficient Negative Charge-Pump LED
Driver with Dual LDOs in 3mm x 3mm Thin QFN
Typical Operating Characteristics
(V IN = 3.6V, V EN_ = V IN , Circuit of Typical Operating Circuit, T A = +25°C, unless otherwise noted.)
100
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MATCHED WLEDs)
100
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MISMATCHED WLEDs)
100
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MISMATCHED WLEDs)
90
80
70
60
50
20.8mA/LED
14.4mA/LED
90
80
70
60
50
14.4mA/LED
90
80
70
60
50
20.8mA/LED
40
6.4mA/LED
1.6mA/LED
40
1.6mA/LED
40
6.4mA/LED
30
20
30
20
30
20
10
0
V IN FALLING
10
0
V IN FALLING
10
0
V IN FALLING
2.7
3.0
3.3
3.6
3.9
4.2
2.7
3.0
3.3
3.6
3.9
4.2
2.7
3.0
3.3
3.6
3.9
4.2
100
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MATCHED WLEDs)
20mA/LED
100
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MISMATCHED WLEDs)
100
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MISMATCHED WLEDs)
90
80
14.4mA/LED
90
80
90
80
20.8mA/LED
70
6.4mA/LED
1.6mA/LED
70
14.4mA/LED
70
6.4mA/LED
1.6mA/LED
60
50
40
60
50
40
60
50
40
4.2 3.9
3.8
3.7
3.6
3.5 3.4 3.0
4.2 3.9
3.8
3.7
3.6
3.5 3.4 3.0
4.2 3.9
3.8
3.7
3.6
3.5 3.4 3.0
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(4 WLEDs)
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(RGB MODULE)
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
INPUT VOLTAGE RIPPLE
vs. SUPPLY VOLTAGE (4 WLEDs)
140
120
100
80
60
40
20
V IN FALLING MISMATCHED LEDs
20.8mA/LED
14.4mA/LED
6.4mA/LED
1.6mA/LED
100
80
60
40
20
RGB MODULE: LUMEX SML-LX3632SISUGSBC,
V IN FALLING
20.8mA/LED
14.4mA/LED
6.4mA/LED
1.6mA/LED
2.8
2.4
2.0
1.6
1.2
0.8
0.4
V IN FALLING, MISMATCHED LEDs
20.8mA/LED
14.4mA/LED
6.4mA/LED
0
0
0
2.7
3.0
3.3
3.6
3.9
4.2
2.7
3.0
3.3
3.6
3.9
4.2
2.7
3.0
3.3
3.6
3.9
4.2
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
4
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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