Datasheet LTC4126 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 7.5mA Wireless Li-Ion Charger with 1.2V Step-Down DC/DC Converter |
| 页数 / 页 | 22 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 2.3 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. DC/DC Output Voltage vs Battery
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LTC4126
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. DC/DC Output Voltage vs Battery DC/DC Efficiency vs Battery DC/DC Output Voltage vs Voltage Voltage Temperature
1.20 100 1.206 VBAT = 3.8V 1.18 90 1.204 ROUT = 1.2k 1.16 80 1.202 1.14 70 REGULATED 3:1 MODE 1.12 60 REGULATED 3:1 MODE 1.200 (V) (V) 1.10 50 OPEN 1.198 V OUT 1.08 LOOP V OUT OPEN 40 EFFICIENCY (%) 3:1 1.196 1.06 LOOP MODE REG. 3:1 30 REG. 1.194 2:1 MODE 1.04 20 2:1 MODE IOUT = 1mA MODE IOUT = 1mA I 1.02 OUT = 2mA I 10 OUT = 2mA 1.192 IOUT = 3mA IOUT = 3mA 1.00 0 1.190 3 3.3 3.6 3.9 4.2 4.5 3 3.3 3.6 3.9 4.2 4.5 –20 –5 10 25 40 55 70 85 VBAT (V) VBAT (V) TEMPERATURE (°C) 4126 G10 4126 G11 4126 G12
DC/DC Output Voltage vs Load Maximum DC/DC Output Current DC/DC Effective Open-Loop Output Current vs Battery Voltage Resistance vs Temperature
1.20 80 6 VBAT = 3.8V VOUT = 1.1V V 1.19 75 BAT = 3.5V 5 1.18 70 1.17 65 4 1.16 2:1 MODE 60 (V) 1.15 (mA) 55 ANCE (Ω) 3 V OUT 1.14 I OUT 50 RESIST 2 1.13 45 1.12 3:1 MODE 40 TA = –20°C 1 1.11 35 TA = 25°C TA = 85°C 1.10 30 0 0 10 20 30 40 50 60 70 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 –20 –5 10 25 40 55 70 85 IOUT (mA) VBAT (V) TEMPERATURE (°C) 4126 G20 4126 G21 4126 G15 Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. DC/DC Output Voltage vs Battery DC/DC Efficiency vs Battery DC/DC Output Voltage vs Voltage Voltage Temperature
1.20 100 1.206 VBAT = 3.8V 1.18 90 1.204 ROUT = 1.2k 1.16 80 1.202 1.14 70 REGULATED 3:1 MODE 1.12 60 REGULATED 3:1 MODE 1.200 (V) (V) 1.10 50 OPEN 1.198 V OUT 1.08 LOOP V OUT OPEN 40 EFFICIENCY (%) 3:1 1.196 1.06 LOOP MODE REG. 3:1 30 REG. 1.194 2:1 MODE 1.04 20 2:1 MODE IOUT = 1mA MODE IOUT = 1mA I 1.02 OUT = 2mA I 10 OUT = 2mA 1.192 IOUT = 3mA IOUT = 3mA 1.00 0 1.190 3 3.3 3.6 3.9 4.2 4.5 3 3.3 3.6 3.9 4.2 4.5 –20 –5 10 25 40 55 70 85 VBAT (V) VBAT (V) TEMPERATURE (°C) 4126 G10 4126 G11 4126 G12
DC/DC Output Voltage vs Load Maximum DC/DC Output Current DC/DC Effective Open-Loop Output Current vs Battery Voltage Resistance vs Temperature
1.20 80 6 VBAT = 3.8V VOUT = 1.1V V 1.19 75 BAT = 3.5V 5 1.18 70 1.17 65 4 1.16 2:1 MODE 60 (V) 1.15 (mA) 55 ANCE (Ω) 3 V OUT 1.14 I OUT 50 RESIST 2 1.13 45 1.12 3:1 MODE 40 TA = –20°C 1 1.11 35 TA = 25°C TA = 85°C 1.10 30 0 0 10 20 30 40 50 60 70 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 –20 –5 10 25 40 55 70 85 IOUT (mA) VBAT (V) TEMPERATURE (°C) 4126 G20 4126 G21 4126 G15 Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts