Datasheet

LTC3859A
3
3859af
elecTrical characTerisTics
orDer inForMaTion
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
BIAS
Bias Input Supply Operating Voltage
Range
4.5 38 V
V
FB1,2
Buck Regulated Feedback Voltage (Note 4); I
TH1,2
Voltage = 1.2V
–40°C to 85°C, All Grades
LTC3859AE, LTC3859AI
LTC3859AH, LTC3859AMP
l
l
0.792
0.788
0.786
0.800
0.800
0.800
0.808
0.812
0.812
V
V
V
V
FB3
Boost Regulated Feedback Voltage (Note 4); I
TH3
Voltage = 1.2V
–40°C to 85°C, All Grades
LTC3859AE, LTC3859AI
LTC3859AH, LTC3859AMP
l
l
1.188
1.182
1.179
1.200
1.200
1.200
1.212
1.218
1.218
V
V
V
I
FB1,2,3
Feedback Current (Note 4) –10 ±50 nA
V
REFLNREG
Reference Voltage Line Regulation (Note 4); V
IN
= 4V to 38V 0.002 0.02 %/V
V
LOADREG
Output Voltage Load Regulation (Note 4)
Measured in Servo Loop;
DI
TH
Voltage = 1.2V to 0.7V
l
0.01 0.1 %
Measured in Servo Loop;
DI
TH
Voltage = 1.2V to 2V
l
–0.01 –0.1 %
g
m1,2,3
Transconductance Amplifier g
m
(Note 4); I
TH1,2,3
= 1.2V;
Sink/Source 5µA
2 mmho
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
BIAS
= 12V, V
RUN1,2,3
= 5V, EXTV
CC
= 0V unless otherwise
noted. (Note 2)
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3859AEFE#PBF LTC3859AEFE#TRPBF LTC3859AFE 38-Lead Plastic TSSOP –40°C to 125°C
LTC3859AIFE#PBF LTC3859AIFE#TRPBF LTC3859AFE 38-Lead Plastic TSSOP –40°C to 125°C
LTC3859AHFE#PBF LTC3859AHFE#TRPBF LTC3859AFE 38-Lead Plastic TSSOP –40°C to 150°C
LTC3859AMPFE#PBF LTC3859AMPFE#TRPBF LTC3859AFE 38-Lead Plastic TSSOP –55°C to 150°C
LTC3859AEUHF#PBF LTC3859AEUHF#TRPBF 3859A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C
LTC3859AIUHF#PBF LTC3859AIUHF#TRPBF 3859A
38-Lead (5mm × 7mm) Plastic QFN
–40°C to 125°C
LTC3859AHUHF#PBF LTC3859AHUHF#TRPBF 3859A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 150°C
LTC3859AMPUHF#PBF LTC3859AMPUHF#TRPBF 3859A
38-Lead (5mm × 7mm) Plastic QFN
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/