Datasheet LT1107 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| Seiten / Seite | 16 / 3 — ELECTRICAL CH. ARA TERISTICS The. denotes the specifications which apply … |
| Dateiformat / Größe | PDF / 217 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL CH. ARA TERISTICS The. denotes the specifications which apply over the full operating
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LT1107
ELECTRICAL CH C ARA TERISTICS The
●
denotes the specifications which apply over the full operating temperature range, VIN = 3V, military or commercial version, TA = 25
°
C, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Feedback Pin Bias Current LT1107, VFB = 0V ● 70 120 nA Set Pin Bias Current VSET = VREF ● 70 300 nA VOL Gain Block Output Low ISINK = 300µA, VSET = 1V ● 0.15 0.4 V Reference Line Regulation 5V ≤ VIN ≤ 30V ● 0.02 0.075 %/V AV Gain Block Gain RL = 100k (Note 4) ● 1000 6000 V/V Current Limit 220Ω to ILIM to VIN 400 mA Current Limit Temperature Coefficient ● – 0.3 %/°C Switch OFF Leakage Current Measured at SW1 Pin, VSW1 = 12V 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 temperature range, VIN = 3V, – 55
°
C
≤
TA
≤
125
°
C, unless otherwise noted. LT1107M SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IQ Quiescent Current Switch OFF ● 500 µA fOSC Oscillator Frequency ● 40 63 95 kHz DC Duty Cycle Step-Up Mode ● 56 69 81 % Step-Down Mode, VIN = 12V ● 45 60 73 % tON Switch ON Time Step-Up Mode ● 7 11 15 µs Step-Down Mode, VIN = 12V ● 5 9 13 µs Reference Line Regulation 2V ≤ VIN ≤ 5V, 0°C ≤ TA ≤ 125°C 0.2 0.4 %/V 2.4V ≤ VIN ≤ 5V, TA = – 55°C 0.8 %/V VSAT Switch Saturation Voltage, Step-Up Mode 0°C ≤ TA ≤ 125°C, ISW = 500mA 0.5 0.65 V TA = – 55°C, ISW = 400mA 0.5 0.65 V Switch Saturation Voltage, Step-Down Mode VIN = 12V, ISW = 500mA 0°C ≤ TA ≤ 125°C 1.5 V TA = – 55°C 2.0 V
The
●
denotes the specifications which apply over the full operating temperature range, VIN = 3V, 0
°
C
≤
TA
≤
70
°
C, unless otherwise noted. LT1107C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IQ Quiescent Current Switch OFF ● 450 µA fOSC Oscillator Frequency ● 50 63 88 kHz DC Duty Cycle Step-Up Mode ● 62 69 78 % Step-Down Mode, VIN = 12V ● 50 60 70 % tON Switch ON Time Step-Up Mode ● 8 11 13.5 µs Step-Down Mode, VIN = 12V ● 6 9 12.0 µs Reference Line Regulation 2V ≤ VIN ≤ 5V ● 0.2 0.7 %/V VSAT Switch Saturation Voltage, Step-Up Mode VIN = 3V, ISW = 650mA ● 0.5 0.65 V Switch Saturation Voltage, Step-Down Mode VIN = 12V, ISW = 650mA ● 1.1 1.5 V
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
The output voltage waveform will exhibit a sawtooth shape due to of a device may be impaired. the comparator hysteresis. The output voltage on the fixed-output versions
Note 2:
This specification guarantees that both the high and low trip points will always be within the specified range. of the comparator fall within the 1.2V to 1.3V range.
Note 4:
100k resistor connected between a 5V source and the AO pin. 1107fa 3
ELECTRICAL CH C ARA TERISTICS The
●
denotes the specifications which apply over the full operating temperature range, VIN = 3V, military or commercial version, TA = 25
°
C, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Feedback Pin Bias Current LT1107, VFB = 0V ● 70 120 nA Set Pin Bias Current VSET = VREF ● 70 300 nA VOL Gain Block Output Low ISINK = 300µA, VSET = 1V ● 0.15 0.4 V Reference Line Regulation 5V ≤ VIN ≤ 30V ● 0.02 0.075 %/V AV Gain Block Gain RL = 100k (Note 4) ● 1000 6000 V/V Current Limit 220Ω to ILIM to VIN 400 mA Current Limit Temperature Coefficient ● – 0.3 %/°C Switch OFF Leakage Current Measured at SW1 Pin, VSW1 = 12V 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 temperature range, VIN = 3V, – 55
°
C
≤
TA
≤
125
°
C, unless otherwise noted. LT1107M SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IQ Quiescent Current Switch OFF ● 500 µA fOSC Oscillator Frequency ● 40 63 95 kHz DC Duty Cycle Step-Up Mode ● 56 69 81 % Step-Down Mode, VIN = 12V ● 45 60 73 % tON Switch ON Time Step-Up Mode ● 7 11 15 µs Step-Down Mode, VIN = 12V ● 5 9 13 µs Reference Line Regulation 2V ≤ VIN ≤ 5V, 0°C ≤ TA ≤ 125°C 0.2 0.4 %/V 2.4V ≤ VIN ≤ 5V, TA = – 55°C 0.8 %/V VSAT Switch Saturation Voltage, Step-Up Mode 0°C ≤ TA ≤ 125°C, ISW = 500mA 0.5 0.65 V TA = – 55°C, ISW = 400mA 0.5 0.65 V Switch Saturation Voltage, Step-Down Mode VIN = 12V, ISW = 500mA 0°C ≤ TA ≤ 125°C 1.5 V TA = – 55°C 2.0 V
The
●
denotes the specifications which apply over the full operating temperature range, VIN = 3V, 0
°
C
≤
TA
≤
70
°
C, unless otherwise noted. LT1107C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IQ Quiescent Current Switch OFF ● 450 µA fOSC Oscillator Frequency ● 50 63 88 kHz DC Duty Cycle Step-Up Mode ● 62 69 78 % Step-Down Mode, VIN = 12V ● 50 60 70 % tON Switch ON Time Step-Up Mode ● 8 11 13.5 µs Step-Down Mode, VIN = 12V ● 6 9 12.0 µs Reference Line Regulation 2V ≤ VIN ≤ 5V ● 0.2 0.7 %/V VSAT Switch Saturation Voltage, Step-Up Mode VIN = 3V, ISW = 650mA ● 0.5 0.65 V Switch Saturation Voltage, Step-Down Mode VIN = 12V, ISW = 650mA ● 1.1 1.5 V
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
The output voltage waveform will exhibit a sawtooth shape due to of a device may be impaired. the comparator hysteresis. The output voltage on the fixed-output versions
Note 2:
This specification guarantees that both the high and low trip points will always be within the specified range. of the comparator fall within the 1.2V to 1.3V range.
Note 4:
100k resistor connected between a 5V source and the AO pin. 1107fa 3