Datasheet MAX889 (Maxim) - 4
| Fabricante | Maxim |
| Descripción | High-Frequency, Regulated, 200mA, Inverting Charge Pump |
| Páginas / Página | 8 / 4 — High-Frequency, Regulated, 200mA, Inverting Charge Pump. Typical … |
| Formato / tamaño de archivo | PDF / 309 Kb |
| Idioma del documento | Inglés |
High-Frequency, Regulated, 200mA, Inverting Charge Pump. Typical Operating Characteristics (continued). MAX889T
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High-Frequency, Regulated, 200mA, Inverting Charge Pump Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = V SHDN = +5V, capacitors from Table 1, TA = +25°C, unless otherwise noted.)
MAX889T OUTPUT RIPPLE EFFICIENCY vs. LOAD CURRENT EFFICIENCY vs. LOAD CURRENT vs. LOAD CURRENT vs. COUT (VIN = 5V, VOUT = -3.3V) (VIN = 3.3V, VOUT = -2.5V)
50 100 100
MAX889
90 90 MAX889R MAX889 toc04 MAX889 toc06 40 80 MAX889 toc05 MAX889R 80 COUT = 2.2µF 70 70 30 60 60 MAX889T 50 MAX889T 50 MAX889S 20 COUT = 4.7µF 40 MAX889S 40 EFFICIENCY (%) EFFICENCY (%) OUTPUT RIPPLE (mV) 30 30 10 C 20 20 OUT = 10µF 10 10 0 0 0 0 50 100 150 200 250 300 350 0 100 200 300 400 500 0 50 100 150 200 250 300 350 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA)
FREE-RUN OUTPUT RESISTANCE FREE-RUN OUTPUT RESISTANCE QUIESCENT SUPPLY CURRENT vs. INPUT VOLTAGE vs. TEMPERATURE vs. INPUT VOLTAGE (REGULATED MODE)
3.00 3.0 12 2.75 MAX889 toc07 MAX889 toc08 10 MAX889 toc09 MAX889T 2.5 2.50 8 ) Ω Ω ( MAX889S 2.25 2.0 6 R OUT R OUT 2.00 4 1.5 QUIESCENT CURRENT (mA) MAX889R 1.75 2 VOUT = -2.5V 1.50 1.0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -20 0 20 40 60 80 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V)
MAX889S MAX889S MAX889S LOAD-TRANSIENT RESPONSE LINE-TRANSIENT RESPONSE STARTUP AND SHUTDOWN
0 MAX889 toc10 MAX889 toc11 MAX889 toc12 A A A B B B 0 C 40µs/div 40µs/div 2ms/div 20 TO 200mA LOAD STEP IOUT = 200mA IOUT = 200mA CIRCUIT OF FIGURE 4 CIRCUIT OF FIGURE 4 A: VOUT, 1V/div A: I A: V B: I OUT, 100mA/div IN, 2V/div IN, 100mA/div B: V B: V C: V OUT, 20mV/div, AC-COUPLED OUT, 10mV/div, AC-COUPLED SHDN, 10V/div
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(Circuit of Figure 1, VIN = V SHDN = +5V, capacitors from Table 1, TA = +25°C, unless otherwise noted.)
MAX889T OUTPUT RIPPLE EFFICIENCY vs. LOAD CURRENT EFFICIENCY vs. LOAD CURRENT vs. LOAD CURRENT vs. COUT (VIN = 5V, VOUT = -3.3V) (VIN = 3.3V, VOUT = -2.5V)
50 100 100
MAX889
90 90 MAX889R MAX889 toc04 MAX889 toc06 40 80 MAX889 toc05 MAX889R 80 COUT = 2.2µF 70 70 30 60 60 MAX889T 50 MAX889T 50 MAX889S 20 COUT = 4.7µF 40 MAX889S 40 EFFICIENCY (%) EFFICENCY (%) OUTPUT RIPPLE (mV) 30 30 10 C 20 20 OUT = 10µF 10 10 0 0 0 0 50 100 150 200 250 300 350 0 100 200 300 400 500 0 50 100 150 200 250 300 350 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA)
FREE-RUN OUTPUT RESISTANCE FREE-RUN OUTPUT RESISTANCE QUIESCENT SUPPLY CURRENT vs. INPUT VOLTAGE vs. TEMPERATURE vs. INPUT VOLTAGE (REGULATED MODE)
3.00 3.0 12 2.75 MAX889 toc07 MAX889 toc08 10 MAX889 toc09 MAX889T 2.5 2.50 8 ) Ω Ω ( MAX889S 2.25 2.0 6 R OUT R OUT 2.00 4 1.5 QUIESCENT CURRENT (mA) MAX889R 1.75 2 VOUT = -2.5V 1.50 1.0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -20 0 20 40 60 80 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V)
MAX889S MAX889S MAX889S LOAD-TRANSIENT RESPONSE LINE-TRANSIENT RESPONSE STARTUP AND SHUTDOWN
0 MAX889 toc10 MAX889 toc11 MAX889 toc12 A A A B B B 0 C 40µs/div 40µs/div 2ms/div 20 TO 200mA LOAD STEP IOUT = 200mA IOUT = 200mA CIRCUIT OF FIGURE 4 CIRCUIT OF FIGURE 4 A: VOUT, 1V/div A: I A: V B: I OUT, 100mA/div IN, 2V/div IN, 100mA/div B: V B: V C: V OUT, 20mV/div, AC-COUPLED OUT, 10mV/div, AC-COUPLED SHDN, 10V/div
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