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Ultra-Efficient Negative Charge-Pump LED
Driver with Dual LDOs in 3mm x 3mm Thin QFN
ABSOLUTE MAXIMUM RATINGS
IN, C1N, C2N, REF, ENLED, ENLDO, LDO1, LDO2
to GND...............................................................-0.3V to +6.0V
IN, REF, ENLED, ENLDO, LDO1, LDO2
to NEG ...............................................................-0.3V to +6.0V
LED_, C1N, C2N to NEG .............................-0.3V to (V IN + 0.3V)
C1P, C2P to GND ........................................-0.3V to (V IN + 0.3V)
NEG to GND ..........................................................-6.0V to +0.3V
Continuous Power Dissipation (T A = +70°C)
16-Pin Thin QFN 3mm x 3mm
(derate 14.7mW/°C above +70°C) .............................1177mW
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
NEG, LDO1, LDO2 Short-Circuit Current to GND ......Continuous
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 = 0V, 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 (UVLO)
Threshold
V IN rising
CONDITIONS
MIN
2.7
2.25
TYP
2.45
MAX
5.5
2.65
UNITS
V
V
UVLO Hysteresis
100
mV
Shutdown Supply Current
ENLED = ENLDO = GND
T A = +25°C
T A = +85°C
0.5
0.5
5
μA
IN Operating Supply Current
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Charge pump inactive,
I LED1 = I LED2 = I LED3 = I LED4 = 0.1mA
Charge pump active, V IN = 2.7V, 1MHz switching,
I LED1 = I LED2 = I LED3 = I LED4 = 0.1mA
65
1.4
160
20
100
μA
mA
°C
°C
SERIAL-PULSE CONTROL
Logic Input-High Voltage (V IH )
Logic Input-Low Voltage (V IL )
V IN = 2.7V to 5.5V
V IN = 2.7V to 5.5V
1.4
0.4
V
V
Logic Input Current
V IL = 0V or V IH = 5.5V
T A = +25°C
T A = +85°C
0.01
0.1
1
μA
t SHDN
See Figures 1 and 2 (Note 2)
2.5
ms
t LO
t HI
t INIT
t HOLD
See Figures 1 and 2
See Figures 1 and 2
First high pulse from shutdown (Figures 1 and 2)
Pulse width to latch EN_ count (Figures 1 and 2) (Note 3)
0.5
0.5
100
2.5
500
500
μs
μs
μs
ms
CHARGE PUMP
Switching Frequency
Soft-Start Time
1
0.5
MHz
ms
Charge-Pump Regulation Voltage
(V IN - V NEG )
5
V
Open-Loop NEG Output
Resistance
NEG Shutdown Discharge
Resistance
(V NEG - 0.5 x V IN ) / I NEG
All LEDs off, EN_ = GND
2.8
10
5.0
Ω
k Ω
2
_______________________________________________________________________________________
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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
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