LTC3859AL Datasheet, PDF (3/44 Pages) Linear Technology – Triple Output, Buck/Buck/Boost Synchronous Controller with 28μA Burst Mode IQ

LTC3859AL
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3859ALEFE#PBF
LTC3859ALEFE#TRPBF
LTC3859ALFE
38-Lead Plastic TSSOP
–40°C to 125°C
LTC3859ALIFE#PBF
LTC3859ALIFE#TRPBF
LTC3859ALFE
38-Lead Plastic TSSOP
–40°C to 125°C
LTC3859ALHFE#PBF
LTC3859ALHFE#TRPBF
LTC3859ALFE
38-Lead Plastic TSSOP
–40°C to 150°C
LTC3859ALMPFE#PBF LTC3859ALMPFE#TRPBF LTC3859ALFE
38-Lead Plastic TSSOP
–55°C to 150°C
LTC3859ALEUHF#PBF LTC3859ALEUHF#TRPBF 3859AL
38-Lead (5mm × 7mm) Plastic QFN
–40°C to 125°C
LTC3859ALIUHF#PBF
LTC3859ALIUHF#TRPBF
3859AL
38-Lead (5mm × 7mm) Plastic QFN
–40°C to 125°C
LTC3859ALHUHF#PBF LTC3859ALHUHF#TRPBF 3859AL
38-Lead (5mm × 7mm) Plastic QFN
–40°C to 150°C
LTC3859ALMPUHF#PBF LTC3859ALMPUHF#TRPBF 3859AL
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/
Electrical Characteristics 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)
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
0°C to 85°C, All Grades
LTC3859ALE, LTC3859ALI
LTC3859ALH, LTC3859ALMP
0.792 0.800 0.808
V
l 0.788 0.800 0.812
V
l 0.786 0.800 0.812
V
V_FB3
Boost Regulated Feedback Voltage
(Note 4); I_TH3 Voltage = 1.2V
0°C to 85°C, All Grades
LTC3859ALE, LTC3859ALI
LTC3859ALH, LTC3859ALMP
1.183 1.200 1.214
V
l 1.181 1.200 1.218
V
l 1.176 1.200 1.218
V
I_{FB1, 2, 3}
V_REFLNREG
V_LOADREG
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
g_{m1, 2, 3}
Transconductance Amplifier g_m
(Note 4)
(Note 4); V_IN = 4V to 38V
(Note 4)
Measured in Servo Loop;
DI_TH Voltage = 1.2V to 0.7V
Measured in Servo Loop;
DI_TH Voltage = 1.2V to 2V
(Note 4); I_TH1,2,3 = 1.2V;
Sink/Source 5µA
–2 ±50
nA
0.002 0.02 %/V
l
0.01 0.1
%
l
–0.01 –0.1
%
2
mmho
For more information www.linear.com/3859AL
3859alf
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