Datasheet LTC3672B-1 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Monolithic Fixed-Output 400mA Buck Regulator with Dual 150mA LDOs in 2mm x 2mm DFN |
| 页数 / 页 | 12 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Notes 1, 2, 3). ORDER … |
| 文件格式/大小 | PDF / 176 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Notes 1, 2, 3). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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LTC3672B-1
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2, 3)
V TOP VIEW IN ... –0.3V to 6V V SW 1 8 V IN1, BUCKOUT, ENALL, SW, IN LDO2 ...–0.3V to the lesser of (V GND 2 7 LDO2 IN + 0.3V) or 6V 9 LDO1 ... –0.3V to the lesser of (V ENALL 3 6 LDO1 IN1 + 0.3V) or 6V BUCKOUT 4 5 V Junction Temperature ... 125°C IN1 Operating Temperature Range.. –40 to 85°C DC PACKAGE Storage Temperature Range ... –65 to 125°C 8-LEAD (2mm s 2mm) PLASTIC DFN TJMAX = 125°C, θJA = 102°C/W, θJC = 20°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3672BEDC-1#PBF LTC3672BEDC-1#TRPBF LCWH 8-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. *For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 3.6V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range ● 2.9 5.5 V VUVLO VIN Undervoltage Lockout Threshold VIN Rising 1.7 2 V Undervoltage Lockout Hysteresis 12 100 mV IQ,VIN VIN Quiescent Current (Note 4) All Outputs Enabled, No Load VBUCKOUT = 1.9V 260 400 μA Shutdown VENALL = 0V 1 μA IQ,VIN1 VIN1 Quiescent Current VIN1 = 1.8V All Outputs Enabled, No Load 2.3 5 μA Shutdown VENALL = 0V 1 μA VIL ENALL Pin Logic Low Voltage ● 0.4 V VIH ENALL Pin Logic High Voltage ● 1.2 V RENALL ENALL Pin Pulldown Resistance 5.5 MΩ
Synchronous Buck Regulator
fOSC Oscillator Frequency 1.8 2.25 2.7 MHz VBUCKOUT Regulated Output Voltage ● 1.755 1.8 1.845 V IMAXP PMOS Switch Maximum Peak Current (Note 5) 550 800 1100 mA IOUT,BUCK Available Output Current 400 mA RP,BUCK PMOS Switch On-Resistance 0.6 Ω RN,BUCK NMOS Switch On-Resistance 0.7 Ω 3672B1f 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2, 3)
V TOP VIEW IN ... –0.3V to 6V V SW 1 8 V IN1, BUCKOUT, ENALL, SW, IN LDO2 ...–0.3V to the lesser of (V GND 2 7 LDO2 IN + 0.3V) or 6V 9 LDO1 ... –0.3V to the lesser of (V ENALL 3 6 LDO1 IN1 + 0.3V) or 6V BUCKOUT 4 5 V Junction Temperature ... 125°C IN1 Operating Temperature Range.. –40 to 85°C DC PACKAGE Storage Temperature Range ... –65 to 125°C 8-LEAD (2mm s 2mm) PLASTIC DFN TJMAX = 125°C, θJA = 102°C/W, θJC = 20°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3672BEDC-1#PBF LTC3672BEDC-1#TRPBF LCWH 8-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. *For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 3.6V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range ● 2.9 5.5 V VUVLO VIN Undervoltage Lockout Threshold VIN Rising 1.7 2 V Undervoltage Lockout Hysteresis 12 100 mV IQ,VIN VIN Quiescent Current (Note 4) All Outputs Enabled, No Load VBUCKOUT = 1.9V 260 400 μA Shutdown VENALL = 0V 1 μA IQ,VIN1 VIN1 Quiescent Current VIN1 = 1.8V All Outputs Enabled, No Load 2.3 5 μA Shutdown VENALL = 0V 1 μA VIL ENALL Pin Logic Low Voltage ● 0.4 V VIH ENALL Pin Logic High Voltage ● 1.2 V RENALL ENALL Pin Pulldown Resistance 5.5 MΩ
Synchronous Buck Regulator
fOSC Oscillator Frequency 1.8 2.25 2.7 MHz VBUCKOUT Regulated Output Voltage ● 1.755 1.8 1.845 V IMAXP PMOS Switch Maximum Peak Current (Note 5) 550 800 1100 mA IOUT,BUCK Available Output Current 400 mA RP,BUCK PMOS Switch On-Resistance 0.6 Ω RN,BUCK NMOS Switch On-Resistance 0.7 Ω 3672B1f 2