Datasheet LT3508 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual Monolithic 1.4A Step-Down Switching Regulator |
| 页数 / 页 | 26 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Quiescent Current. VC Voltages. … |
| 修订版 | E |
| 文件格式/大小 | PDF / 1.2 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Quiescent Current. VC Voltages. Error Amp Output Current. Switch Voltage Drop
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LT3508
TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Current VC Voltages Error Amp Output Current
5.0 2.5 35 TA = 25°C 4.5 VIN1 30 4.0 2.0 CLAMP VOLTAGE SINKING 3.5 25 3.0 1.5 20 2.5 TAGE (V) 15 2.0 VOL 1.0 SOURCING V C TO SWITCH INPUT CURRENT (mA) 1.5 10 OUTPUT CURRENT (µA) 1.0 0.5 5 0.5 VIN2 0 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3508 G10 3508 G11 3508 G12
Switch Voltage Drop Boost Pin Current
350 35 TA = 25°C TA = 25°C 300 30 250 25 200 TAGE (mV) 20 150 15 100 SWITCH VOL 10 BOOST PIN CURRENT (mA) 50 5 0 0 0 0.5 1 1.5 0 0.5 1 1.5 SWITCH CURRENT (A) SWITCH CURRENT (A) 3508 G13 3508 G14
SHDN Pin Current Undervoltage Lockout
120 4.0 TA = –45°C 3.5 VIN1 100 T 3.0 A = 125°C 80 2.5 VIN2 TA = 25°C TAGE (V) 60 2.0 PIN CURRENT (µA) 1.5 40 INPUT VOL SHDN 1.0 20 0.5 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 SHDN PIN VOLTAGE (V) TEMPERATURE (°C) 3508 G15 3508 G16 Rev. E For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Current VC Voltages Error Amp Output Current
5.0 2.5 35 TA = 25°C 4.5 VIN1 30 4.0 2.0 CLAMP VOLTAGE SINKING 3.5 25 3.0 1.5 20 2.5 TAGE (V) 15 2.0 VOL 1.0 SOURCING V C TO SWITCH INPUT CURRENT (mA) 1.5 10 OUTPUT CURRENT (µA) 1.0 0.5 5 0.5 VIN2 0 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3508 G10 3508 G11 3508 G12
Switch Voltage Drop Boost Pin Current
350 35 TA = 25°C TA = 25°C 300 30 250 25 200 TAGE (mV) 20 150 15 100 SWITCH VOL 10 BOOST PIN CURRENT (mA) 50 5 0 0 0 0.5 1 1.5 0 0.5 1 1.5 SWITCH CURRENT (A) SWITCH CURRENT (A) 3508 G13 3508 G14
SHDN Pin Current Undervoltage Lockout
120 4.0 TA = –45°C 3.5 VIN1 100 T 3.0 A = 125°C 80 2.5 VIN2 TA = 25°C TAGE (V) 60 2.0 PIN CURRENT (µA) 1.5 40 INPUT VOL SHDN 1.0 20 0.5 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 SHDN PIN VOLTAGE (V) TEMPERATURE (°C) 3508 G15 3508 G16 Rev. E For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts