Datasheet LTC3672B-2 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Monolithic Fixed-Output 400mA Buck Regulator with Dual 150mA LDOs in 2mm × 2mm DFN |
| 页数 / 页 | 12 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. … |
| 文件格式/大小 | PDF / 161 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. VIN1 – LDO1 Dropout Voltage
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LTC3672B-2
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. VIN1 – LDO1 Dropout Voltage VIN – LDO2 Dropout Voltage vs Load vs Load LDO1 Short-Circuit Current vs VIN1
200 350 500 V 90oC IN = VIN1 300 90oC 400 –45 25oC oC 150 250 90oC 25oC 25oC 300 TAGE (mV) TAGE (mV) 200 100 150 –45oC 200 T-CIRCUIT CURRENT (mA) –45oC 100 DROPOUT VOL DROPOUT VOL 50 100 50 LDO1 SHOR VIN = VIN1 0 0 0 0 25 50 75 100 125 150 0 25 50 75 100 125 150 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LDO1 LOAD (mA) LDO2 LOAD (mA) VIN1 (V) 3672B2 G10 3672B2 G11 3672B2 G09
Buck Oscillator Frequency LDO2 Short-Circuit Current vs VIN vs Temperature
600 2.6 500 2.5 2.4 400 VIN = 5.5V VIN = 4.2V 2.3 300 2.2 VIN = 3.6V T CIRCUIT CURRENT (mA) 200 FREQUENCY (MHz) 2.1 VIN = 2.9V 100 –45°C 2.0 LDO2 SHOR 25°C 90°C 0 1.9 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –30 –10 10 30 50 70 90 110 130 VIN (V) TEMPERATURE (°C) 3672B2 G12 3672B2 G13
PMOS Switch Maximum Buck PMOS Switch On-Resistance Peak Current vs Temperature vs Temperature
1000 900 130°C 800 90°C 700 900 25°C 600 ANCE (mΩ) 500 –45°C 800 400 300 700 PMOS ON-RESIST 200 VIN = 2.9V V 100 PMOS SWITCH MAX PEAK CURRENT (mA) IN = 3.6V VIN = 5.5V 600 0 –50 –30 –10 10 30 50 70 90 110 130 2.5 3.0 3.5 4.0 4.5 5.0 5.5 TEMPERATURE (°C) VIN (V) 3672B2 G14 3672B2 G15 3672b2fa 5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. VIN1 – LDO1 Dropout Voltage VIN – LDO2 Dropout Voltage vs Load vs Load LDO1 Short-Circuit Current vs VIN1
200 350 500 V 90oC IN = VIN1 300 90oC 400 –45 25oC oC 150 250 90oC 25oC 25oC 300 TAGE (mV) TAGE (mV) 200 100 150 –45oC 200 T-CIRCUIT CURRENT (mA) –45oC 100 DROPOUT VOL DROPOUT VOL 50 100 50 LDO1 SHOR VIN = VIN1 0 0 0 0 25 50 75 100 125 150 0 25 50 75 100 125 150 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LDO1 LOAD (mA) LDO2 LOAD (mA) VIN1 (V) 3672B2 G10 3672B2 G11 3672B2 G09
Buck Oscillator Frequency LDO2 Short-Circuit Current vs VIN vs Temperature
600 2.6 500 2.5 2.4 400 VIN = 5.5V VIN = 4.2V 2.3 300 2.2 VIN = 3.6V T CIRCUIT CURRENT (mA) 200 FREQUENCY (MHz) 2.1 VIN = 2.9V 100 –45°C 2.0 LDO2 SHOR 25°C 90°C 0 1.9 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –30 –10 10 30 50 70 90 110 130 VIN (V) TEMPERATURE (°C) 3672B2 G12 3672B2 G13
PMOS Switch Maximum Buck PMOS Switch On-Resistance Peak Current vs Temperature vs Temperature
1000 900 130°C 800 90°C 700 900 25°C 600 ANCE (mΩ) 500 –45°C 800 400 300 700 PMOS ON-RESIST 200 VIN = 2.9V V 100 PMOS SWITCH MAX PEAK CURRENT (mA) IN = 3.6V VIN = 5.5V 600 0 –50 –30 –10 10 30 50 70 90 110 130 2.5 3.0 3.5 4.0 4.5 5.0 5.5 TEMPERATURE (°C) VIN (V) 3672B2 G14 3672B2 G15 3672b2fa 5