Datasheet LTC1258 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Micropower Low Dropout References |
| Pages / Page | 8 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. LTC1258-2.5 Output Voltage vs. … |
| File Format / Size | PDF / 137 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. LTC1258-2.5 Output Voltage vs. LTC1258-2.5 Input Current vs. Input Voltage
Model Line for this Datasheet
- LTC1258CMS8-2.5#PBF LTC1258CMS8-2.5#PBF LTC1258CMS8-2.5#TRPBF LTC1258CMS8-2.5#TRPBF LTC1258CMS8-3#PBF LTC1258CMS8-3#PBF LTC1258CMS8-3#TRPBF LTC1258CMS8-3#TRPBF LTC1258CMS8-4.1#PBF LTC1258CMS8-4.1#PBF LTC1258CMS8-4.1#TRPBF LTC1258CMS8-4.1#TRPBF LTC1258CMS8-5#PBF LTC1258CMS8-5#PBF LTC1258CMS8-5#TRPBF LTC1258CMS8-5#TRPBF LTC1258CS8-2.5#PBF LTC1258CS8-2.5#PBF LTC1258CS8-2.5#TRPBF LTC1258CS8-2.5#TRPBF LTC1258CS8-3#PBF LTC1258CS8-3#PBF LTC1258CS8-3#TRPBF LTC1258CS8-3#TRPBF LTC1258CS8-4.1#PBF LTC1258CS8-4.1#PBF LTC1258CS8-4.1#TRPBF LTC1258CS8-4.1#TRPBF LTC1258CS8-5#PBF LTC1258CS8-5#PBF LTC1258CS8-5#TRPBF LTC1258CS8-5#TRPBF
Text Version of Document
LTC1258 Series
TYPICAL PERFORMANCE CHARACTERISTICS LTC1258-2.5 Output Voltage vs LTC1258-2.5 Input Current vs Input Voltage Input Voltage LTC1258-2.5 PSRR vs Frequency
2.5010 7 60 TA = 25°C TA = 25°C VIN = 2.7V 50 2.5005 6 40 30 2.5000 5 20 OUTPUT VOLTAGE (V) INPUT CURRENT (μA) 10 POWER SUPPLY REJECTION RATIO (dB) 2.4995 4 0 2 4 6 8 10 12 14 2 4 6 8 10 12 14 10 100 1k 10k INPUT VOLTAGE (V) INPUT VOLTAGE (V) FREQUENCY (Hz) 1258 G07 1258 G08 1258 G09
LTC1258-5 Input Current vs Input LTC1258-2.5 Input Current vs LTC1258-2.5 0.1Hz to 10Hz Noise Voltage in Dropout Input Voltage in Dropout
1400 250 VIN = 2.7V TA = –55°C 1200 TA = 25°C 200 1000 TA = 25°C T T A = 125°C A = 125°C 800 150 5μV/DIV 600 100 TA = –55°C INPUT CURRENT (μA) 400 INPUT CURRENT (μA) 50 200 0 0 1SEC/DIV 0 1 2 3 4 5 6 7 8 9 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1258 G10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1258 G11 1258 G12
PIN FUNCTIONS OUT (Pin 1):
Reference Output. The output can source
FB (Pin 3):
(LT1258) Resistor Divider Feedback Pin. Con- up to 10mA and sink up to 2mA. It is stable with output nect a resistor divider from OUT to GND and the center bypass capacitor ranging from 0μF to 1μF. tap to FB. This pin sets the output potential.
IN (Pin 2):
Positive Supply. Bypassing with a 0.1μF ca- ⎛ R1 R2⎞ pacitor is recommended if the output loading changes. V = + 2.385V OUT ; ⎝⎜ R1 is connected from OUT to R2 ⎠⎟ (V OUT + 0.2V) ≤ VIN ≤ 12.6V. FB and R2 from FB to GND.
DNC (Pin 3):
(LTC1258-2.5/LTC1258-3/LTC1258-4.1/ LTC1258-5) Do Not Connect. Connected internally for post
GND (Pin 4):
Negative Supply or Ground Connection. package trim. This pin must be left unconnected.
DNC (Pins 5, 6, 7, 8):
Do Not Connect. Connected in- ternally for post package trim. These pins must be left unconnected. 1258sfb 5
TYPICAL PERFORMANCE CHARACTERISTICS LTC1258-2.5 Output Voltage vs LTC1258-2.5 Input Current vs Input Voltage Input Voltage LTC1258-2.5 PSRR vs Frequency
2.5010 7 60 TA = 25°C TA = 25°C VIN = 2.7V 50 2.5005 6 40 30 2.5000 5 20 OUTPUT VOLTAGE (V) INPUT CURRENT (μA) 10 POWER SUPPLY REJECTION RATIO (dB) 2.4995 4 0 2 4 6 8 10 12 14 2 4 6 8 10 12 14 10 100 1k 10k INPUT VOLTAGE (V) INPUT VOLTAGE (V) FREQUENCY (Hz) 1258 G07 1258 G08 1258 G09
LTC1258-5 Input Current vs Input LTC1258-2.5 Input Current vs LTC1258-2.5 0.1Hz to 10Hz Noise Voltage in Dropout Input Voltage in Dropout
1400 250 VIN = 2.7V TA = –55°C 1200 TA = 25°C 200 1000 TA = 25°C T T A = 125°C A = 125°C 800 150 5μV/DIV 600 100 TA = –55°C INPUT CURRENT (μA) 400 INPUT CURRENT (μA) 50 200 0 0 1SEC/DIV 0 1 2 3 4 5 6 7 8 9 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1258 G10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1258 G11 1258 G12
PIN FUNCTIONS OUT (Pin 1):
Reference Output. The output can source
FB (Pin 3):
(LT1258) Resistor Divider Feedback Pin. Con- up to 10mA and sink up to 2mA. It is stable with output nect a resistor divider from OUT to GND and the center bypass capacitor ranging from 0μF to 1μF. tap to FB. This pin sets the output potential.
IN (Pin 2):
Positive Supply. Bypassing with a 0.1μF ca- ⎛ R1 R2⎞ pacitor is recommended if the output loading changes. V = + 2.385V OUT ; ⎝⎜ R1 is connected from OUT to R2 ⎠⎟ (V OUT + 0.2V) ≤ VIN ≤ 12.6V. FB and R2 from FB to GND.
DNC (Pin 3):
(LTC1258-2.5/LTC1258-3/LTC1258-4.1/ LTC1258-5) Do Not Connect. Connected internally for post
GND (Pin 4):
Negative Supply or Ground Connection. package trim. This pin must be left unconnected.
DNC (Pins 5, 6, 7, 8):
Do Not Connect. Connected in- ternally for post package trim. These pins must be left unconnected. 1258sfb 5
