Datasheet LTC1798 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Micropower Low Dropout References |
| Pages / Page | 10 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. LTC1798-2.5. LTC1798-5 Input … |
| File Format / Size | PDF / 848 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. LTC1798-2.5. LTC1798-5 Input Current. LTC1798-2.5 Input Current. 0.1Hz to 10Hz Noise
Model Line for this Datasheet
- LTC1798CS8-2.5#PBF LTC1798CS8-2.5#PBF LTC1798CS8-2.5#TRPBF LTC1798CS8-2.5#TRPBF LTC1798CS8-3#PBF LTC1798CS8-3#PBF LTC1798CS8-3#TRPBF LTC1798CS8-3#TRPBF LTC1798CS8-4.1#PBF LTC1798CS8-4.1#PBF LTC1798CS8-4.1#TRPBF LTC1798CS8-4.1#TRPBF LTC1798CS8-5#PBF LTC1798CS8-5#PBF LTC1798CS8-5#TRMPBF LTC1798CS8-5#TRPBF LTC1798CS8-5#TRPBF
Text Version of Document
LTC1798 Series
TYPICAL PERFORMANCE CHARACTERISTICS LTC1798-2.5 LTC1798-5 Input Current LTC1798-2.5 Input Current 0.1Hz to 10Hz Noise vs Input Voltage in Dropout vs 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 T INPUT CURRENT (µA) 400 INPUT CURRENT (µA) A = –55°C 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 1798 G10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1798 G11 1798 G12
PIN FUNCTIONS DNC (Pins 1, 5, 7, 8):
Do Not Connect. Connected R1+ R2 internally for post package trim. These pins must be left VOUT = 2. V 385 ; R1 is connected from OUT R2 unconnected. to FB and R2 from FB to GND. Selecting R2 ≥ 10k will
IN (Pin 2):
Positive Supply. Bypassing with a 0.1µF capaci- make IOUT < 250µA. tor is recommended if the output loading changes. (VOUT + 0.2V) ≤ V
GND (Pin 4):
Negative Supply or Ground Connection. IN ≤ 12.6V.
DNC (Pin 3):
(LTC1798-2.5/LTC1798-3/LTC1798-4.1/
OUT (Pin 6):
Reference Output. The output can source LTC1798-5) Do Not Connect. Connected internally for post up to 10mA and sink up to 2mA. It is stable with output package trim. This pin must be left unconnected. bypass capacitor ranging from 0µF to 1µF.
FB (Pin 3):
(LTC1798) Resistor Divider Feedback Pin. Connect a resistor divider from OUT to GND and the center tap to FB. This pin sets the output potential. 1798fc 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION AVAILABLE OPTIONS ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS LTC1798-2.5 LTC1798-5 Input Current LTC1798-2.5 Input Current 0.1Hz to 10Hz Noise vs Input Voltage in Dropout vs 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 T INPUT CURRENT (µA) 400 INPUT CURRENT (µA) A = –55°C 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 1798 G10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1798 G11 1798 G12
PIN FUNCTIONS DNC (Pins 1, 5, 7, 8):
Do Not Connect. Connected R1+ R2 internally for post package trim. These pins must be left VOUT = 2. V 385 ; R1 is connected from OUT R2 unconnected. to FB and R2 from FB to GND. Selecting R2 ≥ 10k will
IN (Pin 2):
Positive Supply. Bypassing with a 0.1µF capaci- make IOUT < 250µA. tor is recommended if the output loading changes. (VOUT + 0.2V) ≤ V
GND (Pin 4):
Negative Supply or Ground Connection. IN ≤ 12.6V.
DNC (Pin 3):
(LTC1798-2.5/LTC1798-3/LTC1798-4.1/
OUT (Pin 6):
Reference Output. The output can source LTC1798-5) Do Not Connect. Connected internally for post up to 10mA and sink up to 2mA. It is stable with output package trim. This pin must be left unconnected. bypass capacitor ranging from 0µF to 1µF.
FB (Pin 3):
(LTC1798) Resistor Divider Feedback Pin. Connect a resistor divider from OUT to GND and the center tap to FB. This pin sets the output potential. 1798fc 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION AVAILABLE OPTIONS ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
