Datasheet MAX1836, MAX1837 (Maxim) - 5
| 制造商 | Maxim |
| 描述 | 24V Internal Switch, 100% Duty Cycle, Step-Down Converters |
| 页数 / 页 | 15 / 5 — Typical Operating Characteristics (continued). MAX1837EUT33. EFFICIENCY … |
| 文件格式/大小 | PDF / 2.1 Mb |
| 文件语言 | 英语 |
Typical Operating Characteristics (continued). MAX1837EUT33. EFFICIENCY vs. INPUT VOLTAGE
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MAX1836/MAX1837 24V Internal Switch, 100% Duty Cycle, Step-Down Converters
Typical Operating Characteristics (continued)
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), VIN = 12V, SHDN = IN, TA = +25°C.)
MAX1837EUT33 MAX1837EUT33 MAX1837EUT33 EFFICIENCY vs. INPUT VOLTAGE SWITCHING FREQUENCY vs. INPUT VOLTAGE PEAK INDUCTOR CURRENT vs. INPUT VOLTAGE
100 100 1000 FIGURE 2 IOUT = 200mA FIGURE 2 V VOUT = 3.3V 95 OUT = 3.3V L1 = 47µH IOUT = 200mA L1 = 47µH MAX1836/7 toc07 MAX1836/7 toc08 800 MAX1836/7 toc09 90 IOUT = 10mA FIGURE 2 600 85 10 I V OUT = 200mA OUT = 3.3V L1 = 47µH EFFICIENCY (%) 400 80 FREQUENCY (kHz) 75 IOUT = 10mA I PEAK INDUCTOR CURRENT (mA) 200 OUT = 10mA LIMITED BY LIMITED BY tON(MIN) ILIM 70 1 0 0 4 8 12 16 20 24 0 4 8 12 16 20 24 0 4 8 12 16 20 24 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V)
MAX1837EUT50 OUTPUT VOLTAGE vs. LOAD CURRENT MAX1837EUT50 EFFICIENCY vs. LOAD CURRENT
5.04 100 V FIGURE 6 IN = 12V TO 24VV V IN = 9V 95 OUT = 5V VIN = 7V 5.02 MAX1836/7 toc10 V MAX1836/7 toc11 IN = 9V 90 VIN = 12V 5.00 85 EFFICIENCY (%) 80 OUTPUT VOLTAGE (V) V 4.98 IN = 7V V 75 IN = 24V VIN = 18V FIGURE 6 4.96 70 0 50 100 150 200 250 300 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA)
MAX1837EUT50 NO-LOAD SUPPLY CURRENT DROPOUT VOLTAGE vs. LOAD CURRENT vs. INPUT VOLTAGE
400 15 FIGURE 6 350 VOUT = 5V 14 300 MAX1836/7 toc12 MAX1836/7 toc13 250 13 200 150 12 DROPOUT VOLTAGE (mV) 100 SUPPLY CURRENT (µA) 11 50 0 10 0 100 200 300 0 4 8 12 16 20 24 LOAD CURRENT (mA) INPUT VOLTAGE (V) www.maximintegrated.com Maxim Integrated │ 5
Typical Operating Characteristics (continued)
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), VIN = 12V, SHDN = IN, TA = +25°C.)
MAX1837EUT33 MAX1837EUT33 MAX1837EUT33 EFFICIENCY vs. INPUT VOLTAGE SWITCHING FREQUENCY vs. INPUT VOLTAGE PEAK INDUCTOR CURRENT vs. INPUT VOLTAGE
100 100 1000 FIGURE 2 IOUT = 200mA FIGURE 2 V VOUT = 3.3V 95 OUT = 3.3V L1 = 47µH IOUT = 200mA L1 = 47µH MAX1836/7 toc07 MAX1836/7 toc08 800 MAX1836/7 toc09 90 IOUT = 10mA FIGURE 2 600 85 10 I V OUT = 200mA OUT = 3.3V L1 = 47µH EFFICIENCY (%) 400 80 FREQUENCY (kHz) 75 IOUT = 10mA I PEAK INDUCTOR CURRENT (mA) 200 OUT = 10mA LIMITED BY LIMITED BY tON(MIN) ILIM 70 1 0 0 4 8 12 16 20 24 0 4 8 12 16 20 24 0 4 8 12 16 20 24 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V)
MAX1837EUT50 OUTPUT VOLTAGE vs. LOAD CURRENT MAX1837EUT50 EFFICIENCY vs. LOAD CURRENT
5.04 100 V FIGURE 6 IN = 12V TO 24VV V IN = 9V 95 OUT = 5V VIN = 7V 5.02 MAX1836/7 toc10 V MAX1836/7 toc11 IN = 9V 90 VIN = 12V 5.00 85 EFFICIENCY (%) 80 OUTPUT VOLTAGE (V) V 4.98 IN = 7V V 75 IN = 24V VIN = 18V FIGURE 6 4.96 70 0 50 100 150 200 250 300 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA)
MAX1837EUT50 NO-LOAD SUPPLY CURRENT DROPOUT VOLTAGE vs. LOAD CURRENT vs. INPUT VOLTAGE
400 15 FIGURE 6 350 VOUT = 5V 14 300 MAX1836/7 toc12 MAX1836/7 toc13 250 13 200 150 12 DROPOUT VOLTAGE (mV) 100 SUPPLY CURRENT (µA) 11 50 0 10 0 100 200 300 0 4 8 12 16 20 24 LOAD CURRENT (mA) INPUT VOLTAGE (V) www.maximintegrated.com Maxim Integrated │ 5