Datasheet LT1616 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 600mA, 1.4MHz Step-Down Switching Regulator in SOT-23 |
| 页数 / 页 | 16 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| 文件格式/大小 | PDF / 288 Kb |
| 文件语言 | 英语 |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS. The
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LT1616
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Voltage (VIN) ... 25V ORDER PART BOOST Pin Voltage ... 35V NUMBER BOOST Pin Above SW Pin .. 25V TOP VIEW SHDN Pin ... 25V BOOST 1 6 SW LT1616ES6 FB Voltage .. 6V GND 2 5 VIN Current Into FB Pin ... ±1mA FB 3 4 SHDN Operating Temperature Range (Note 2) .. – 40°C to 85°C S6 PACKAGE S6 PART MARKING 6-LEAD PLASTIC SOT-23 Maximum Junction Temperature .. 125°C T LTNB JMAX = 125°C, θJA = 250°C/ W Storage Temperature Range ... – 65°C to 150°C Lead Temperature (Soldering, 10 sec).. 300°C Consult factory for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 10V, VBOOST = 15V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Undervoltage Lockout 3.35 3.6 V Feedback Voltage ● 1.225 1.25 1.275 V FB Pin Bias Current VFB = Measured VREF + 10mV ● 150 600 nA Quiescent Current Not Switching 1.9 2.5 mA Quiescent Current in Shutdown VSHDN = 0V 0.01 2 µA Reference Line Regulation VIN = 5V to 25V 0.005 %/V Switching Frequency VFB = 1.1V ● 1 1.4 1.8 MHz Frequency Shift Threshold on FB Pin fSW = 700kHz 0.44 V Maximum Duty Cycle ● 80 87 % Switch Current Limit (Note 3) 630 850 mA Switch VCESAT ISW = 300mA 220 350 mV Switch Leakage Current 10 µA Minimum Boost Voltage Above Switch ISW = 300mA 1.6 2.5 V BOOST Pin Current ISW = 300mA 7 12 mA SHDN Input Voltage High 1.8 V SHDN Input Voltage Low 0.4 V SHDN Bias Current VSHDN = 3V 8 15 µA VSHDN = 0V 0.01 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
Current limit guaranteed by design and/or correlation to static test. of the device may be impaired. Slope compensation reduces current limit at higher duty cycle.
Note 2:
The LT1616E is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Voltage (VIN) ... 25V ORDER PART BOOST Pin Voltage ... 35V NUMBER BOOST Pin Above SW Pin .. 25V TOP VIEW SHDN Pin ... 25V BOOST 1 6 SW LT1616ES6 FB Voltage .. 6V GND 2 5 VIN Current Into FB Pin ... ±1mA FB 3 4 SHDN Operating Temperature Range (Note 2) .. – 40°C to 85°C S6 PACKAGE S6 PART MARKING 6-LEAD PLASTIC SOT-23 Maximum Junction Temperature .. 125°C T LTNB JMAX = 125°C, θJA = 250°C/ W Storage Temperature Range ... – 65°C to 150°C Lead Temperature (Soldering, 10 sec).. 300°C Consult factory for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 10V, VBOOST = 15V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Undervoltage Lockout 3.35 3.6 V Feedback Voltage ● 1.225 1.25 1.275 V FB Pin Bias Current VFB = Measured VREF + 10mV ● 150 600 nA Quiescent Current Not Switching 1.9 2.5 mA Quiescent Current in Shutdown VSHDN = 0V 0.01 2 µA Reference Line Regulation VIN = 5V to 25V 0.005 %/V Switching Frequency VFB = 1.1V ● 1 1.4 1.8 MHz Frequency Shift Threshold on FB Pin fSW = 700kHz 0.44 V Maximum Duty Cycle ● 80 87 % Switch Current Limit (Note 3) 630 850 mA Switch VCESAT ISW = 300mA 220 350 mV Switch Leakage Current 10 µA Minimum Boost Voltage Above Switch ISW = 300mA 1.6 2.5 V BOOST Pin Current ISW = 300mA 7 12 mA SHDN Input Voltage High 1.8 V SHDN Input Voltage Low 0.4 V SHDN Bias Current VSHDN = 3V 8 15 µA VSHDN = 0V 0.01 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
Current limit guaranteed by design and/or correlation to static test. of the device may be impaired. Slope compensation reduces current limit at higher duty cycle.
Note 2:
The LT1616E is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. 2