Datasheet LTC1174, LTC1174-3.3, LTC1174-5 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | High Efficiency Step-Down and Inverting DC/DC Converter |
| Pages / Page | 20 / 3 — ELECTRICAL CHARACTERISTICS The. denotes specifications which apply over … |
| File Format / Size | PDF / 263 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS The. denotes specifications which apply over the full operating
Model Line for this Datasheet
- LTC1174CN8#PBF LTC1174CN8-3.3#PBF LTC1174CN8-5#PBF LTC1174CS8#PBF LTC1174CS8#TRPBF LTC1174CS8-3.3#PBF LTC1174CS8-3.3#TRPBF LTC1174CS8-5#PBF LTC1174CS8-5#TRPBF LTC1174HVCN8#PBF LTC1174HVCN8-3.3#PBF LTC1174HVCN8-5#PBF LTC1174HVCS8#PBF LTC1174HVCS8#TRPBF LTC1174HVCS8-3.3#PBF LTC1174HVCS8-3.3#TRPBF LTC1174HVCS8-5#PBF LTC1174HVCS8-5#TRPBF LTC1174HVIS8#PBF LTC1174HVIS8#TRPBF LTC1174IN8#PBF LTC1174IS8#PBF LTC1174IS8#TRPBF
Text Version of Document
LTC1174 LTC1174-3.3/LTC1174-5
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 9V, VSHUTDOWN = VIN, IPGM = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage Load Regulation LTC1174-3.3 (Note 3) 20mA < ILOAD < 175mA, IPGM = 0V –5 –70 mV 20mA < ILOAD < 400mA, IPGM = VIN –45 –70 mV LTC1174-5 (Note 3) 20mA < ILOAD < 175mA, IPGM = 0V –5 –70 mV 20mA < ILOAD < 400mA, IPGM = VIN –50 –70 mV IQ Input DC Supply Current (Note 4) Active Mode LTC1174: 4V < VIN < 12V, IPGM = 0V 450 600 µA LTC1174HV: 4V < VIN < 16V, IPGM = 0V 450 600 µA Sleep Mode LTC1174: 4V < VIN < 12V 130 180 µA LTC1174HV: 4V < VIN < 16V 130 180 µA SHUTDOWN (Note 4) LTC1174: VSHUTDOWN = 0V, 4V < VIN < 12V 1 10 µA LTC1174HV: VSHUTDOWN = 0V, 4V < VIN < 16V 2 25 µA VLBTRIP Low-Battery Trip Point 1.25 1.4 V ILBIN Current into Pin 3 0.5 µA ILBOUT Current Sunk by Pin 2 LTC1174: VLBOUT = 0.4V 1.0 1.2 1.5 mA LTC1174HV: VLBOUT = 0.4V 0.6 0.8 1.5 mA VHYST Comparator Hysteresis LTC1174/LTC1174HV 7.5 15 30 mV IPEAK Current Limit IPGM = VIN, VOUT = 0V ● 0.54 0.60 0.83 A IPGM = 0V, VOUT = 0V ● 0.27 0.34 0.53 A RON ON Resistance of Switch LTC1174 ● 0.75 1.30 Ω LTC1174HV ● 0.90 1.55 Ω tOFF Switch Off-Time (Note 6) VOUT at Regulated Value 3 4 5 µs VIH SHUTDOWN Pin High Minimum Voltage at Pin 8 for Device to Be Active 1.2 V VIL SHUTDOWN Pin Low Maximum Voltage at Pin 8 for Device to Be in Shutdown 0.75 V IIH SHUTDOWN Pin Input Current LTC1174: VSHUTDOWN = 12V 0.5 µA LTC1174HV: VSHUTDOWN = 16V 2.0 µA IIL SHUTDOWN Pin Input Current 0 ≤ VSHUTDOWN ≤ 0.8V 0.5 µA
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at – 40
°
C
≤
TA
≤
85
°
C. LTC1174I and LTC1174HVI Only. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VFB Feedback Voltage LTC1174I/LTC1174HVI ● 1.18 1.25 1.31 V ILBOUT Current Sunk by Pin 2 VLBOUT = 0.4V (LTC1174I) ● 0.75 1.2 2.0 mA VLBOUT = 0.4V (LTC1174HVI) ● 0.50 0.8 1.6 mA IPEAK Current Limit IPGM = VIN, VOUT = 0V (LTC1174I) ● 0.54 0.60 0.84 A IPGM = 0V, VOUT = 0V (LTC1174I) 0.34 A IPGM = VIN, VOUT = 0V (LTC1174HVI) ● 0.5 0.60 0.86 A IPGM = 0V, VOUT = 0V (LTC1174HVI) 0.34 A tOFF Switch Off-Time (Note 6) VOUT at Regulated Value (LTC1174I) ● 2.0 4 6.0 µs VOUT at Regulated Value (LTC1174HVI) ● 1.8 4 6.2 µs RON Switch On Resistance LTC1174I/LTC1174HVI ● 0.9 1.7 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 2:
TJ is calculated from the ambient temperature TA and power may cause permanent damage to the device. Exposure to any Absolute dissipation PD according to the following formulas: Maximum Rating condition for extended periods may affect device LTC1174CN8, LTC1174CN8-3.3, LTC1174CN8-5: reliability and lifetime. TJ = TA + (PD × 110°C/W) LTC1174CS8, LTC1174CS8-3.3, LTC1174CS8-5: TJ = TA + (PD × 150°C/W) 1174fe 3
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 9V, VSHUTDOWN = VIN, IPGM = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage Load Regulation LTC1174-3.3 (Note 3) 20mA < ILOAD < 175mA, IPGM = 0V –5 –70 mV 20mA < ILOAD < 400mA, IPGM = VIN –45 –70 mV LTC1174-5 (Note 3) 20mA < ILOAD < 175mA, IPGM = 0V –5 –70 mV 20mA < ILOAD < 400mA, IPGM = VIN –50 –70 mV IQ Input DC Supply Current (Note 4) Active Mode LTC1174: 4V < VIN < 12V, IPGM = 0V 450 600 µA LTC1174HV: 4V < VIN < 16V, IPGM = 0V 450 600 µA Sleep Mode LTC1174: 4V < VIN < 12V 130 180 µA LTC1174HV: 4V < VIN < 16V 130 180 µA SHUTDOWN (Note 4) LTC1174: VSHUTDOWN = 0V, 4V < VIN < 12V 1 10 µA LTC1174HV: VSHUTDOWN = 0V, 4V < VIN < 16V 2 25 µA VLBTRIP Low-Battery Trip Point 1.25 1.4 V ILBIN Current into Pin 3 0.5 µA ILBOUT Current Sunk by Pin 2 LTC1174: VLBOUT = 0.4V 1.0 1.2 1.5 mA LTC1174HV: VLBOUT = 0.4V 0.6 0.8 1.5 mA VHYST Comparator Hysteresis LTC1174/LTC1174HV 7.5 15 30 mV IPEAK Current Limit IPGM = VIN, VOUT = 0V ● 0.54 0.60 0.83 A IPGM = 0V, VOUT = 0V ● 0.27 0.34 0.53 A RON ON Resistance of Switch LTC1174 ● 0.75 1.30 Ω LTC1174HV ● 0.90 1.55 Ω tOFF Switch Off-Time (Note 6) VOUT at Regulated Value 3 4 5 µs VIH SHUTDOWN Pin High Minimum Voltage at Pin 8 for Device to Be Active 1.2 V VIL SHUTDOWN Pin Low Maximum Voltage at Pin 8 for Device to Be in Shutdown 0.75 V IIH SHUTDOWN Pin Input Current LTC1174: VSHUTDOWN = 12V 0.5 µA LTC1174HV: VSHUTDOWN = 16V 2.0 µA IIL SHUTDOWN Pin Input Current 0 ≤ VSHUTDOWN ≤ 0.8V 0.5 µA
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at – 40
°
C
≤
TA
≤
85
°
C. LTC1174I and LTC1174HVI Only. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VFB Feedback Voltage LTC1174I/LTC1174HVI ● 1.18 1.25 1.31 V ILBOUT Current Sunk by Pin 2 VLBOUT = 0.4V (LTC1174I) ● 0.75 1.2 2.0 mA VLBOUT = 0.4V (LTC1174HVI) ● 0.50 0.8 1.6 mA IPEAK Current Limit IPGM = VIN, VOUT = 0V (LTC1174I) ● 0.54 0.60 0.84 A IPGM = 0V, VOUT = 0V (LTC1174I) 0.34 A IPGM = VIN, VOUT = 0V (LTC1174HVI) ● 0.5 0.60 0.86 A IPGM = 0V, VOUT = 0V (LTC1174HVI) 0.34 A tOFF Switch Off-Time (Note 6) VOUT at Regulated Value (LTC1174I) ● 2.0 4 6.0 µs VOUT at Regulated Value (LTC1174HVI) ● 1.8 4 6.2 µs RON Switch On Resistance LTC1174I/LTC1174HVI ● 0.9 1.7 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 2:
TJ is calculated from the ambient temperature TA and power may cause permanent damage to the device. Exposure to any Absolute dissipation PD according to the following formulas: Maximum Rating condition for extended periods may affect device LTC1174CN8, LTC1174CN8-3.3, LTC1174CN8-5: reliability and lifetime. TJ = TA + (PD × 110°C/W) LTC1174CS8, LTC1174CS8-3.3, LTC1174CS8-5: TJ = TA + (PD × 150°C/W) 1174fe 3
