Datasheet LTC3537 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO |
| Seiten / Seite | 22 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Effi … |
| Dateiformat / Größe | PDF / 322 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Effi ciency vs Load Current and. VINB for VOUTB = 1.8V
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LTC3537
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Effi ciency vs Load Current and Effi ciency vs Load Current and VINB for VOUTB = 1.8V VINB for VOUTB = 3.3V No-Load Input Current vs VINB
100 1000 100 1000 180 VOUTB = 5V 90 90 160 VOUTB = 3.3V V 80 100 80 100 OUTB = 2.5V 140 V POWER LOSS (mW) POWER LOSS (mW) OUTB = 1.8V 70 70 120 60 10 60 10 100 50 50 (μA) VINB = 1.2V 80 I INB 40 V 1 V INB = 1V 40 INB = 1.8V 1 EFFICIENCY (%) V EFFICIENCY (%) VINB = 2.4V 60 30 INB = 1.2V V 30 V INB = 1.5V INB = 2.8V PLOSS AT V 20 0.1 INB = 1.2V 40 PLOSS AT V 20 0.1 INB = 1V PLOSS AT VINB = 1.8V 10 PLOSS AT VINB = 1.2V 10 PLOSS AT V 20 INB = 2.4V PLOSS AT VINB = 1.5V PLOSS AT VINB = 2.8V 0 0.01 0 0.01 0 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 LOAD CURRENT (mA) LOAD CURRENT (mA) VINB (V) 3537 G01 3537 G02 3537 G03
Effi ciency vs Load Current and Minimum Load Resistance During VINB for VOUTB = 5V Maximum Output Current vs VINB Start-Up vs VINB
100 1000 1000 1000 90 900 VOUTB = 5V 80 100 800 POWER LOSS (mW) 70 700 VOUTB = 3.3V 60 10 600 ) Ω 50 500 100 VINB = 1.2V 40 V 1 LOAD ( INB = 2.4V 400 EFFICIENCY (%) V V INB = 3.6V OUTB = 2.5V 30 V 300 INB = 4.2V LOAD CURRENT (mA) 20 PLOSS AT VINB = 1.2V 0.1 200 VOUTB = 1.8V PLOSS AT VINB = 2.4V 10 PLOSS AT VINB = 3.6V 100 PLOSS AT V 0 INB = 4.2V 0.01 0 10 0.01 0.1 1 10 100 1000 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 LOAD CURRENT (mA) VINB (V) VINB (V) 3537 G04 3537 G05 3537 G06
Burst Mode Threshold Current Burst Mode Threshold Current Start-Up Delay Time vs VINB vs VINB vs VINB
60 45 50 VOUTB = 1.8V VOUTB = 2.5V 40 COUTB = 10μF 45 COUTB = 10μF 50 L = 2.2μH L = 2.2μH 35 40 LEAVE BURST LEAVE BURST 35 40 30 30 25 Y (μs) 30 ENTER BURST 25 20 ENTER BURST DELA 20 20 15 LOAD CURRENT (mA) LOAD CURRENT (mA) 15 10 10 10 5 5 0 0 0 1 1.5 2 2.5 3 3.5 4 4.5 5 0.8 0.9 1 1.1 1.2 1.3 1.4 0.8 1 1.2 1.4 1.6 1.8 2 VINB (V) VINB (V) VINB (V) 3537 G07 3537 G08 3537 G09 3537fd 5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Effi ciency vs Load Current and Effi ciency vs Load Current and VINB for VOUTB = 1.8V VINB for VOUTB = 3.3V No-Load Input Current vs VINB
100 1000 100 1000 180 VOUTB = 5V 90 90 160 VOUTB = 3.3V V 80 100 80 100 OUTB = 2.5V 140 V POWER LOSS (mW) POWER LOSS (mW) OUTB = 1.8V 70 70 120 60 10 60 10 100 50 50 (μA) VINB = 1.2V 80 I INB 40 V 1 V INB = 1V 40 INB = 1.8V 1 EFFICIENCY (%) V EFFICIENCY (%) VINB = 2.4V 60 30 INB = 1.2V V 30 V INB = 1.5V INB = 2.8V PLOSS AT V 20 0.1 INB = 1.2V 40 PLOSS AT V 20 0.1 INB = 1V PLOSS AT VINB = 1.8V 10 PLOSS AT VINB = 1.2V 10 PLOSS AT V 20 INB = 2.4V PLOSS AT VINB = 1.5V PLOSS AT VINB = 2.8V 0 0.01 0 0.01 0 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 LOAD CURRENT (mA) LOAD CURRENT (mA) VINB (V) 3537 G01 3537 G02 3537 G03
Effi ciency vs Load Current and Minimum Load Resistance During VINB for VOUTB = 5V Maximum Output Current vs VINB Start-Up vs VINB
100 1000 1000 1000 90 900 VOUTB = 5V 80 100 800 POWER LOSS (mW) 70 700 VOUTB = 3.3V 60 10 600 ) Ω 50 500 100 VINB = 1.2V 40 V 1 LOAD ( INB = 2.4V 400 EFFICIENCY (%) V V INB = 3.6V OUTB = 2.5V 30 V 300 INB = 4.2V LOAD CURRENT (mA) 20 PLOSS AT VINB = 1.2V 0.1 200 VOUTB = 1.8V PLOSS AT VINB = 2.4V 10 PLOSS AT VINB = 3.6V 100 PLOSS AT V 0 INB = 4.2V 0.01 0 10 0.01 0.1 1 10 100 1000 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 LOAD CURRENT (mA) VINB (V) VINB (V) 3537 G04 3537 G05 3537 G06
Burst Mode Threshold Current Burst Mode Threshold Current Start-Up Delay Time vs VINB vs VINB vs VINB
60 45 50 VOUTB = 1.8V VOUTB = 2.5V 40 COUTB = 10μF 45 COUTB = 10μF 50 L = 2.2μH L = 2.2μH 35 40 LEAVE BURST LEAVE BURST 35 40 30 30 25 Y (μs) 30 ENTER BURST 25 20 ENTER BURST DELA 20 20 15 LOAD CURRENT (mA) LOAD CURRENT (mA) 15 10 10 10 5 5 0 0 0 1 1.5 2 2.5 3 3.5 4 4.5 5 0.8 0.9 1 1.1 1.2 1.3 1.4 0.8 1 1.2 1.4 1.6 1.8 2 VINB (V) VINB (V) VINB (V) 3537 G07 3537 G08 3537 G09 3537fd 5