Datasheet LTC3410-1.875 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 2.25MHz, 300mA Synchronous Step-Down Regulator in SC70 |
| 页数 / 页 | 16 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| 文件格式/大小 | PDF / 238 Kb |
| 文件语言 | 英语 |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
该数据表的模型线
文件文字版本
LTC3410-1.875
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage .. – 0.3V to 6V TOP VIEW ORDER PART RUN, VOUT Voltages... – 0.3V to VIN RUN 1 6 V NUMBER OUT SW Voltage (DC) ... – 0.3V to (VIN + 0.3V) GND 2 5 GND LTC3410ESC6-1.875 P-Channel Switch Source Current (DC) ... 500mA SW 3 4 VIN N-Channel Switch Sink Current (DC) ... 500mA SC6 PACKAGE SC6 PART MARKING Peak SW Sink and Source Current .. 630mA 6-LEAD PLASTIC SC70 Operating Temperature Range (Note 2) .. – 40°C to 85°C TJMAX = 125°C, θJA = 250°C/ W LCFQ Junction Temperature (Notes 3, 5) .. 125°C
Order Options
Tape and Reel: Add #TR Storage Temperature Range .. – 65°C to 150°C Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Temperature (Soldering, 10 sec)... 300°C Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 3.6V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IVOUT Output Voltage Feedback Current ● 3.3 6 µA IPK Peak Inductor Current VIN = 3V, VOUT = 1.64V, Duty Cycle < 35% 380 500 mA VOUT Regulated Output Voltage ● 1.837 1.875 1.913 V ∆VOUT Output Voltage Line Regulation VIN = 2.5V to 5.5V ● 0.04 0.4 %/V VLOADREG Output Voltage Load Regulation ILOAD = 50mA to 250mA 0.5 % VIN Input Voltage Range ● 2.5 5.5 V VUVLO Undervoltage Lockout Threshold VIN Rising 2 2.3 V VIN Falling 1.94 V IS Input DC Bias Current (Note 4) Burst Mode® Operation VOUT = 1.945V, ILOAD = 0A 26 35 µA Shutdown VRUN = 0V 0.1 1 µA fOSC Oscillator Frequency VOUT = 1.875V ● 1.8 2.25 2.7 MHz VOUT = 0V 310 kHz RPFET RDS(ON) of P-Channel FET ISW = 100mA 0.75 0.9 Ω RNFET RDS(ON) of N-Channel FET ISW = –100mA 0.55 0.7 Ω ILSW SW Leakage VRUN = 0V, VSW = 0V or 5V, VIN = 5V ±0.01 ±1 µA VRUN RUN Threshold ● 0.3 1 1.5 V IRUN RUN Leakage Current ● ±0.01 ±1 µA Burst Mode is a registered trademark of Linear Technology Corporation.
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings may dissipation PD according to the following formula: cause permanent damage to the device. Exposure to any Absolute Maximum LTC3410-1.875: TJ = TA + (PD)(250°C/W) Rating condition for extended periods may affect device reliability and
Note 4:
Dynamic supply current is higher due to the gate charge being lifetime. delivered at the switching frequency.
Note 2:
The LTC3410E-1.875 is guaranteed to meet performance
Note 5:
This IC includes overtemperature protection that is intended to specifications from 0°C to 70°C. Specifications over the –40°C to 85°C protect the device during momentary overload conditions. Junction operating temperature range are assured by design, characterization and temperature will exceed 125°C when overtemperature protection is active. correlation with statistical process controls. Continuous operation above the specified maximum operating junction
Note 3:
TJ is calculated from the ambient temperature TA and power temperature may impair device reliability. 34101875f 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage .. – 0.3V to 6V TOP VIEW ORDER PART RUN, VOUT Voltages... – 0.3V to VIN RUN 1 6 V NUMBER OUT SW Voltage (DC) ... – 0.3V to (VIN + 0.3V) GND 2 5 GND LTC3410ESC6-1.875 P-Channel Switch Source Current (DC) ... 500mA SW 3 4 VIN N-Channel Switch Sink Current (DC) ... 500mA SC6 PACKAGE SC6 PART MARKING Peak SW Sink and Source Current .. 630mA 6-LEAD PLASTIC SC70 Operating Temperature Range (Note 2) .. – 40°C to 85°C TJMAX = 125°C, θJA = 250°C/ W LCFQ Junction Temperature (Notes 3, 5) .. 125°C
Order Options
Tape and Reel: Add #TR Storage Temperature Range .. – 65°C to 150°C Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Temperature (Soldering, 10 sec)... 300°C Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 3.6V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IVOUT Output Voltage Feedback Current ● 3.3 6 µA IPK Peak Inductor Current VIN = 3V, VOUT = 1.64V, Duty Cycle < 35% 380 500 mA VOUT Regulated Output Voltage ● 1.837 1.875 1.913 V ∆VOUT Output Voltage Line Regulation VIN = 2.5V to 5.5V ● 0.04 0.4 %/V VLOADREG Output Voltage Load Regulation ILOAD = 50mA to 250mA 0.5 % VIN Input Voltage Range ● 2.5 5.5 V VUVLO Undervoltage Lockout Threshold VIN Rising 2 2.3 V VIN Falling 1.94 V IS Input DC Bias Current (Note 4) Burst Mode® Operation VOUT = 1.945V, ILOAD = 0A 26 35 µA Shutdown VRUN = 0V 0.1 1 µA fOSC Oscillator Frequency VOUT = 1.875V ● 1.8 2.25 2.7 MHz VOUT = 0V 310 kHz RPFET RDS(ON) of P-Channel FET ISW = 100mA 0.75 0.9 Ω RNFET RDS(ON) of N-Channel FET ISW = –100mA 0.55 0.7 Ω ILSW SW Leakage VRUN = 0V, VSW = 0V or 5V, VIN = 5V ±0.01 ±1 µA VRUN RUN Threshold ● 0.3 1 1.5 V IRUN RUN Leakage Current ● ±0.01 ±1 µA Burst Mode is a registered trademark of Linear Technology Corporation.
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings may dissipation PD according to the following formula: cause permanent damage to the device. Exposure to any Absolute Maximum LTC3410-1.875: TJ = TA + (PD)(250°C/W) Rating condition for extended periods may affect device reliability and
Note 4:
Dynamic supply current is higher due to the gate charge being lifetime. delivered at the switching frequency.
Note 2:
The LTC3410E-1.875 is guaranteed to meet performance
Note 5:
This IC includes overtemperature protection that is intended to specifications from 0°C to 70°C. Specifications over the –40°C to 85°C protect the device during momentary overload conditions. Junction operating temperature range are assured by design, characterization and temperature will exceed 125°C when overtemperature protection is active. correlation with statistical process controls. Continuous operation above the specified maximum operating junction
Note 3:
TJ is calculated from the ambient temperature TA and power temperature may impair device reliability. 34101875f 2