Datasheet LT1961 (Linear Technology) - 2
| 制造商 | Linear Technology |
| 描述 | 1.5A, 1.25MHz Step-Up Switching Regulator |
| 页数 / 页 | 16 / 2 — ABSOLUTE MAXIMUM RATINGS. PI CO FIGURATIO. (Note 1). ORDER I FOR ATIO. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 163 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PI CO FIGURATIO. (Note 1). ORDER I FOR ATIO. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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文件文字版本
LT1961
W W W U U U U ABSOLUTE MAXIMUM RATINGS PI CO FIGURATIO (Note 1)
Input Voltage .. 25V TOP VIEW Switch Voltage ... 35V V 1 IN 8 SYNC SW 2 7 V SHDN Pin ... 25V C GND 3 6 FB FB Pin Current ... 1mA GND 4 5 SHDN SYNC Pin Current .. 1mA MS8E PACKAGE 8-LEAD PLASTIC MSOP Operating Junction Temperature Range (Note 2) GROUND PAD CONNECTED LT1961E, LT1961I ... – 40°C to 125°C TO LARGE COPPER AREA Storage Temperature Range .. – 65°C to 150°C TJMAX = 125°C, θJA = 50°C/W Lead Temperature (Soldering, 10 sec)... 300°C
U W U ORDER I FOR ATIO LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1961EMS8E#PBF LT1961EMS8E#TRPBF LTQY 8-Lead Plastic MSOP –40°C to 125°C LT1961IMS8E#PBF LT1961IMS8E#TRPBF LTQY 8-Lead Plastic MSOP –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1961EMS8E LT1961EMS8E#TR LTQY 8-Lead Plastic MSOP –40°C to 125°C LT1961IMS8E LT1961IMS8E#TR LTQY 8-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VC = 0.8V, SHDN, SYNC and switch open unless otherwise noted. PARAMETER CONDITION MIN TYP MAX UNITS
Recommended Operating Voltage ● 3 25 V Maximum Switch Current Limit ● 1.5 2 3 A Oscillator Frequency 3.3V < VIN < 25V ● 1 1.5 MHz Switch On Voltage Drop ISW = 1.5A ● 310 500 mV VIN Undervoltage Lockout (Note 3) ● 2.47 2.6 2.73 V VIN Supply Current ISW = 0A ● 0.9 1.3 mA VIN Supply Current/ISW ISW = 1.5A 27 mA/A Shutdown Supply Current VSHDN = 0V, VIN = 25V, VSW = 25V 6 20 μA ● 45 μA Feedback Voltage 3V < VIN < 25V, 0.4V < VC < 0.9V 1.182 1.2 1.218 V ● 1.176 1.224 V 1961fa 2
W W W U U U U ABSOLUTE MAXIMUM RATINGS PI CO FIGURATIO (Note 1)
Input Voltage .. 25V TOP VIEW Switch Voltage ... 35V V 1 IN 8 SYNC SW 2 7 V SHDN Pin ... 25V C GND 3 6 FB FB Pin Current ... 1mA GND 4 5 SHDN SYNC Pin Current .. 1mA MS8E PACKAGE 8-LEAD PLASTIC MSOP Operating Junction Temperature Range (Note 2) GROUND PAD CONNECTED LT1961E, LT1961I ... – 40°C to 125°C TO LARGE COPPER AREA Storage Temperature Range .. – 65°C to 150°C TJMAX = 125°C, θJA = 50°C/W Lead Temperature (Soldering, 10 sec)... 300°C
U W U ORDER I FOR ATIO LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1961EMS8E#PBF LT1961EMS8E#TRPBF LTQY 8-Lead Plastic MSOP –40°C to 125°C LT1961IMS8E#PBF LT1961IMS8E#TRPBF LTQY 8-Lead Plastic MSOP –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1961EMS8E LT1961EMS8E#TR LTQY 8-Lead Plastic MSOP –40°C to 125°C LT1961IMS8E LT1961IMS8E#TR LTQY 8-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VC = 0.8V, SHDN, SYNC and switch open unless otherwise noted. PARAMETER CONDITION MIN TYP MAX UNITS
Recommended Operating Voltage ● 3 25 V Maximum Switch Current Limit ● 1.5 2 3 A Oscillator Frequency 3.3V < VIN < 25V ● 1 1.5 MHz Switch On Voltage Drop ISW = 1.5A ● 310 500 mV VIN Undervoltage Lockout (Note 3) ● 2.47 2.6 2.73 V VIN Supply Current ISW = 0A ● 0.9 1.3 mA VIN Supply Current/ISW ISW = 1.5A 27 mA/A Shutdown Supply Current VSHDN = 0V, VIN = 25V, VSW = 25V 6 20 μA ● 45 μA Feedback Voltage 3V < VIN < 25V, 0.4V < VC < 0.9V 1.182 1.2 1.218 V ● 1.176 1.224 V 1961fa 2