Datasheet LT1110 (Linear Technology) - 3
| Manufacturer | Linear Technology |
| Description | Micropower DC-DC Converter Adjustable and Fixed 5V, 12V |
| Pages / Page | 16 / 3 — ELECTRICAL CHAR C. A TERISTICS TA = 25. C, VIN = 1.5V, unless otherwise … |
| File Format / Size | PDF / 323 Kb |
| Document Language | English |
ELECTRICAL CHAR C. A TERISTICS TA = 25. C, VIN = 1.5V, unless otherwise noted. SYMBOL. PARAMETER. CONDITIONS. MIN. TYP. MAX. UNITS. Note 3:
Model Line for this Datasheet
Text Version of Document
LT1110
ELECTRICAL CHAR C A TERISTICS TA = 25
°
C, VIN = 1.5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCESAT Switch Saturation Voltage VIN = 1.5V, ISW = 400mA 300 400 mV Step-Up Mode ● 600 mV VIN = 1.5V, ISW = 500mA 400 550 mV ● 750 mV VIN = 5V, ISW = 1A 700 1000 mV AV A2 Error Amp Gain RL = 100kΩ (Note 3) ● 1000 5000 V/V IREV Reverse Battery Current (Note 4) 750 mA ILIM Current Limit 220Ω Between ILIM and VIN 400 mA Current Limit Temperature – 0.3 %/°C Coefficient ILEAK Switch OFF Leakage Current Measured at SW1 Pin 1 10 µA VSW2 Maximum Excursion Below GND ISW1 ≤ 10µA, Switch Off – 400 – 350 mV The ● denotes the specifications which apply over the full operating
Note 3:
100kΩ resistor connected between a 5V source and the AO pin. temperature range.
Note 4:
The LT1110 is guaranteed to withstand continuous application of
Note 1:
This specification guarantees that both the high and low trip point +1.6V applied to the GND and SW2 pins while VIN, ILIM, and SW1 pins are of the comparator fall within the 210mV to 230mV range. grounded.
Note 2:
This specification guarantees that the output voltage of the fixed versions will always fall within the specified range. The waveform at the sense pin will exhibit a sawtooth shape due to the comparator hysteresis.
W U TYPICAL PERFOR A CE CHAR C A TERISTICS Oscillator Frequency Oscillator Frequency Switch On Time
100 80 14 78 13 90 76 74 12 80 72 µs) 11 70 70 68 10 ON TIME ( 60 FREQUENCY (KHz) 66 9 64 OSCILLATOR FREQUENCY (KHz) 50 8 62 40 60 7 –50 –25 0 25 50 75 100 0 3 6 9 12 15 18 21 24 27 30 –50 –25 0 25 50 75 100 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) LT1110 • TPC01 LT1110 • TPC02 LT1110 • TPC03 3
ELECTRICAL CHAR C A TERISTICS TA = 25
°
C, VIN = 1.5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCESAT Switch Saturation Voltage VIN = 1.5V, ISW = 400mA 300 400 mV Step-Up Mode ● 600 mV VIN = 1.5V, ISW = 500mA 400 550 mV ● 750 mV VIN = 5V, ISW = 1A 700 1000 mV AV A2 Error Amp Gain RL = 100kΩ (Note 3) ● 1000 5000 V/V IREV Reverse Battery Current (Note 4) 750 mA ILIM Current Limit 220Ω Between ILIM and VIN 400 mA Current Limit Temperature – 0.3 %/°C Coefficient ILEAK Switch OFF Leakage Current Measured at SW1 Pin 1 10 µA VSW2 Maximum Excursion Below GND ISW1 ≤ 10µA, Switch Off – 400 – 350 mV The ● denotes the specifications which apply over the full operating
Note 3:
100kΩ resistor connected between a 5V source and the AO pin. temperature range.
Note 4:
The LT1110 is guaranteed to withstand continuous application of
Note 1:
This specification guarantees that both the high and low trip point +1.6V applied to the GND and SW2 pins while VIN, ILIM, and SW1 pins are of the comparator fall within the 210mV to 230mV range. grounded.
Note 2:
This specification guarantees that the output voltage of the fixed versions will always fall within the specified range. The waveform at the sense pin will exhibit a sawtooth shape due to the comparator hysteresis.
W U TYPICAL PERFOR A CE CHAR C A TERISTICS Oscillator Frequency Oscillator Frequency Switch On Time
100 80 14 78 13 90 76 74 12 80 72 µs) 11 70 70 68 10 ON TIME ( 60 FREQUENCY (KHz) 66 9 64 OSCILLATOR FREQUENCY (KHz) 50 8 62 40 60 7 –50 –25 0 25 50 75 100 0 3 6 9 12 15 18 21 24 27 30 –50 –25 0 25 50 75 100 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) LT1110 • TPC01 LT1110 • TPC02 LT1110 • TPC03 3
