Datasheet LT3430, LT3430-1 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | High Voltage, 3A, 200kHz/100kHz Step-Down Switching Regulators |
| 页数 / 页 | 28 / 2 — ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). Order … |
| 文件格式/大小 | PDF / 335 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
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文件文字版本
LT3430/LT3430-1
ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
TOP VIEW Input Voltage (VIN) .. 60V BOOST Pin Above SW (Note 11) .. 35V GND 1 16 GND BOOST Pin Voltage ... 68V SW 2 15 SHDN V 3 14 SYNC SYNC Voltage ... 7V IN V 4 13 NC ⎯S⎯H⎯D⎯N Voltage .. 6V IN 17 SW 5 12 FB BIAS Pin Voltage ... 30V BOOST 6 11 VC FB Pin Voltage/Current .. 3.5V/2mA NC 7 10 BIAS Operating Junction Temperature Range GND 8 9 GND LT3430EFE (Notes 8, 10) .. –40°C to 125°C FE PACKAGE LT3430IFE (Notes 8, 10) .. –40°C to 125°C 16-LEAD PLASTIC TSSOP Storage Temperature Range ... –65°C to 150°C TJMAX = 125°C, θJA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB Lead Temperature (Soldering, 10 sec) .. 300°C ORDER PART NUMBER FE PART MARKING LT3430EFE 3430EFE LT3430IFE 3430IFE LT3430EFE-1 3430EFE-1 LT3430IFE-1 3430IFE-1
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. VIN = 15V, VC = 1.5V,
⎯
S
⎯
H
⎯
D
⎯
N = 1V, BOOST = Open Circuit, SW = Open Circuit, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage (VREF) VOL + 0.2 ≤ VC ≤ VOH – 0.2 1.204 1.219 1.234 V 5.5V ≤ VIN ≤ 60V ● 1.195 1.243 FB Input Bias Current ● –0.2 –1.5 µA Error Amp Voltage Gain (Note 2) 200 400 V/V Error Amp gm dl (VC) = ±10µA 1650 2200 3300 µMho ● 1000 4200 µMho VC to Switch gm 3.4 A/V EA Source Current FB = 1V ● 125 225 450 µA EA Sink Current FB = 1.4V ● 100 225 500 µA VC Switching Threshold Duty Cycle = 0 0.9 V VC High Clamp ⎯S⎯H⎯D⎯N = 1V 2.1 V Switch Current Limit VC Open, Boost = VIN + 5V, FB = 1V –40°C ≤ TJ ≤ 25°C 3 5 6.5 A TJ = 125°C (Note 9) 2.5 4 5.5 A Switch On Resistance ISW = 2.5A, Boost = VIN + 5V (Note 7) 0.1 0.14 Ω 0.18 Ω Maximum Switch Duty Cycle (LT3430) FB = 1V 93 96 % ● 90 % 34301fa 2
ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
TOP VIEW Input Voltage (VIN) .. 60V BOOST Pin Above SW (Note 11) .. 35V GND 1 16 GND BOOST Pin Voltage ... 68V SW 2 15 SHDN V 3 14 SYNC SYNC Voltage ... 7V IN V 4 13 NC ⎯S⎯H⎯D⎯N Voltage .. 6V IN 17 SW 5 12 FB BIAS Pin Voltage ... 30V BOOST 6 11 VC FB Pin Voltage/Current .. 3.5V/2mA NC 7 10 BIAS Operating Junction Temperature Range GND 8 9 GND LT3430EFE (Notes 8, 10) .. –40°C to 125°C FE PACKAGE LT3430IFE (Notes 8, 10) .. –40°C to 125°C 16-LEAD PLASTIC TSSOP Storage Temperature Range ... –65°C to 150°C TJMAX = 125°C, θJA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB Lead Temperature (Soldering, 10 sec) .. 300°C ORDER PART NUMBER FE PART MARKING LT3430EFE 3430EFE LT3430IFE 3430IFE LT3430EFE-1 3430EFE-1 LT3430IFE-1 3430IFE-1
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. VIN = 15V, VC = 1.5V,
⎯
S
⎯
H
⎯
D
⎯
N = 1V, BOOST = Open Circuit, SW = Open Circuit, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage (VREF) VOL + 0.2 ≤ VC ≤ VOH – 0.2 1.204 1.219 1.234 V 5.5V ≤ VIN ≤ 60V ● 1.195 1.243 FB Input Bias Current ● –0.2 –1.5 µA Error Amp Voltage Gain (Note 2) 200 400 V/V Error Amp gm dl (VC) = ±10µA 1650 2200 3300 µMho ● 1000 4200 µMho VC to Switch gm 3.4 A/V EA Source Current FB = 1V ● 125 225 450 µA EA Sink Current FB = 1.4V ● 100 225 500 µA VC Switching Threshold Duty Cycle = 0 0.9 V VC High Clamp ⎯S⎯H⎯D⎯N = 1V 2.1 V Switch Current Limit VC Open, Boost = VIN + 5V, FB = 1V –40°C ≤ TJ ≤ 25°C 3 5 6.5 A TJ = 125°C (Note 9) 2.5 4 5.5 A Switch On Resistance ISW = 2.5A, Boost = VIN + 5V (Note 7) 0.1 0.14 Ω 0.18 Ω Maximum Switch Duty Cycle (LT3430) FB = 1V 93 96 % ● 90 % 34301fa 2