Datasheet MAX1573 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | White LED 1x/1.5x Charge Pump in UCSP and Thin QFN |
| Páginas / Página | 9 / 3 — White LED 1x/1.5x Charge Pump in. UCSP and Thin QFN. MAX1573. Typical … |
| Formato / tamaño de archivo | PDF / 269 Kb |
| Idioma del documento | Inglés |
White LED 1x/1.5x Charge Pump in. UCSP and Thin QFN. MAX1573. Typical Operating Characteristics. EFFICIENCY (PLEDs/PBATT)
Línea de modelo para esta hoja de datos
Versión de texto del documento
White LED 1x/1.5x Charge Pump in UCSP and Thin QFN MAX1573 Typical Operating Characteristics
(VIN = 3.6V, EN1 = EN2 = IN, CIN = C1 = C2 = COUT = 1µF, RSET = 7.50kΩ, TA = +25°C, unless otherwise noted.)
EFFICIENCY (PLEDs/PBATT) EFFICIENCY (PLEDs/PBATT) SUPPLY CURRENT vs. Li+ BATTERY DISCHARGE vs. SUPPLY VOLTAGE vs. SUPPLY VOLTAGE
100 100 120 1/10 3/10 FULL 90 MAX1573 toc01 90 MAX1573 toc02 100 MAX1573 toc03 FULL 3/10 80 FULL 80 80 1/10 60 70 70 EFFICIENCY (%) EFFICIENCY (%) 40 BATTERY CURRENT (mA) 3/10 60 60 20 1/10 50 50 0 4.2 3.9 3.8 3.7 3.6 3.5 3.4 3.0 3.0 3.2 3.4 3.6 3.8 4.0 4.2 3.0 3.2 3.4 3.6 3.8 4.0 4.2 Li+ BATTERY VOLTAGE, TIME-WEIGHTED (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V)
INPUT RIPPLE vs. SUPPLY VOLTAGE LED CURRENT vs. SUPPLY VOLTAGE LED CURRENT vs. TEMPERATURE
9 20 17.5 LED4 8 FULL 19 LED2 17.4 MAX1573 toc04 MAX1573 toc05 MAX1573 toc06 7 18 17.3 ) 17 17.2 RMS 6 16 17.1 5 LED3 15 LED1 17.0 4 14 16.9 3 LED CURRENT (mA) LED CURRENT (mA) INPUT RIPPLE (mV 3/10 13 16.8 2 12 16.7 1/10 1 11 16.6 0 10 16.5 3.0 3.2 3.4 3.6 3.8 4.0 4.2 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) TEMPERATURE (°C)
TYPICAL OPERATING WAVEFORMS TYPICAL OPERATING WAVEFORMS LED CURRENT vs. RSET IN 1x MODE IN 1.5x MODE
MAX1573 toc08 MAX1573 toc09 30 3.4V Li+ BATTERY INPUT 3.6V Li+ BATTERY INPUT 20mV/ 25 V MAX1573 toc07 IN div VIN 20mV/ div 20 FULL 10mA/ 15 IIN div IIN 10mA/ div 3/10 LED CURRENT (mA) 10 1/10 20mV/ 5 VOUT div VOUT 20mV/ div 0 5 6 7 8 9 10 11 12 13 14 15 500ns/div 500ns/div RSET (kΩ)
_______________________________________________________________________________________ 3
(VIN = 3.6V, EN1 = EN2 = IN, CIN = C1 = C2 = COUT = 1µF, RSET = 7.50kΩ, TA = +25°C, unless otherwise noted.)
EFFICIENCY (PLEDs/PBATT) EFFICIENCY (PLEDs/PBATT) SUPPLY CURRENT vs. Li+ BATTERY DISCHARGE vs. SUPPLY VOLTAGE vs. SUPPLY VOLTAGE
100 100 120 1/10 3/10 FULL 90 MAX1573 toc01 90 MAX1573 toc02 100 MAX1573 toc03 FULL 3/10 80 FULL 80 80 1/10 60 70 70 EFFICIENCY (%) EFFICIENCY (%) 40 BATTERY CURRENT (mA) 3/10 60 60 20 1/10 50 50 0 4.2 3.9 3.8 3.7 3.6 3.5 3.4 3.0 3.0 3.2 3.4 3.6 3.8 4.0 4.2 3.0 3.2 3.4 3.6 3.8 4.0 4.2 Li+ BATTERY VOLTAGE, TIME-WEIGHTED (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V)
INPUT RIPPLE vs. SUPPLY VOLTAGE LED CURRENT vs. SUPPLY VOLTAGE LED CURRENT vs. TEMPERATURE
9 20 17.5 LED4 8 FULL 19 LED2 17.4 MAX1573 toc04 MAX1573 toc05 MAX1573 toc06 7 18 17.3 ) 17 17.2 RMS 6 16 17.1 5 LED3 15 LED1 17.0 4 14 16.9 3 LED CURRENT (mA) LED CURRENT (mA) INPUT RIPPLE (mV 3/10 13 16.8 2 12 16.7 1/10 1 11 16.6 0 10 16.5 3.0 3.2 3.4 3.6 3.8 4.0 4.2 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) TEMPERATURE (°C)
TYPICAL OPERATING WAVEFORMS TYPICAL OPERATING WAVEFORMS LED CURRENT vs. RSET IN 1x MODE IN 1.5x MODE
MAX1573 toc08 MAX1573 toc09 30 3.4V Li+ BATTERY INPUT 3.6V Li+ BATTERY INPUT 20mV/ 25 V MAX1573 toc07 IN div VIN 20mV/ div 20 FULL 10mA/ 15 IIN div IIN 10mA/ div 3/10 LED CURRENT (mA) 10 1/10 20mV/ 5 VOUT div VOUT 20mV/ div 0 5 6 7 8 9 10 11 12 13 14 15 500ns/div 500ns/div RSET (kΩ)
_______________________________________________________________________________________ 3