LTC3865EFE#PBF Linear Technology, LTC3865EFE#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC3865EFE#PBF
• Description: IC BUCK SYNC ADJ DUAL 38TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3865EFE#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 5 V
• Frequency - Switching: 250kHz ~ 770kHz
• Voltage - Input: 4.5 ~ 38 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Primary Input Voltage: 15V
• No. Of Outputs: 2
• Output Voltage: 5V
• Output Current: 25A
• No. Of Pins: 38
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

LTC3865/LTC3865-1
ELECTRICAL CHARACTERISTICS
SYMBOL
Main Control Loops
V
V
I
V
V
g
I
UVLO
UVLO
V
I
DF
I
V
V
I
V
TG R
TG R
BG R
4
junction temperature range, otherwise specifi cations are at T
OSENSE1,2
Q
SENSE
TK/SS1,2
RUN1,2HYS
m1,2
IN
OSENSE1,2
REFLNREG
LOADREG
OVL
RUN1,2
RUN1,2HYS
SENSE(MAX)
MAX
UP
DOWN
UP
HYS
PARAMETER
Input Voltage
Output Voltage Sensing (E-Grade)
Output Voltage Sensing (I-Grade)
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
Transconductance Amplifi er g
Input DC Supply Current
Undervoltage Lockout on INTV
UVLO Hysteresis
Feedback Overvoltage Lockout
Sense Pins Total Current
Maximum Duty Cycle
Soft-Start Charge Current
RUN Pin On Threshold
RUN Pin On Hysteresis
RUN Pin Current Hysteresis
Maximum Current Sense Threshold
(E-Grade)
Maximum Current Sense Threshold
(I-Grade)
TG Driver Pull-Up On-Resistance
TG Driver Pull-Down On-Resistance
BG Driver Pull-Up On-Resistance
Normal Mode
Shutdown
m
CC
CONDITIONS
(Note 4) I
(Note 4) I
(Note 4) VID11 = VID21 = VID12 = VID22 = Float
V
(Note 4)
Measured in Servo Loop; ΔI
Measured in Servo Loop; ΔI
I
(Note 5)
V
V
V
Measured at V
(Each Channel); V
In Dropout
V
V
V
V
V
In Overvoltage Condition
V
V
V
In Overvoltage Condition
TG High
TG Low
BG High
TH1,2
TK/SS1,2
IN
IN
RUN1,2
INTVCC
RUN1
ITH1,2
ITH1,2
ITH1,2
ITH1,2
ITH1,2
ITH1,2
VID11 = VID21 = GND, VID12 = VID22 = GND
VID11 = VID21 = GND, VID12 = VID22 = Float
VID11 = VID21 = GND, VID12 = VID22 = INTV
VID11 = VID21 = Float, VID12 = VID22 = GND
VID11 = VID21 = Float, VID12 = VID22 = Float
VID11 = VID21 = Float, VID12 = VID22 = INTV
VID11 = VID21 = INTV
VID11 = VID21 = INTV
VID11 = VID21 = INTV
VID11 = VID21 = GND, VID12 = VID22 = GND
VID11 = VID21 = GND, VID12 = VID22 = Float
VID11 = VID21 = GND, VID12 = VID22 = INTV
VID11 = VID21 = Float, VID12 = VID22 = GND
VID11 = VID21 = Float, VID12 = VID22 = Float
VID11 = VID21 = Float, VID12 = VID22 = INTV
VID11 = VID21 = INTV
VID11 = VID21 = INTV
VID11 = VID21 = INTV
= 4.5V to 38V (Note 4)
= 15V
= 1.2V; Sink/Source 5μA; (Note 4)
, V
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 3.3V, I
Ramping Down
= 0V
RUN2
= 0V
TH1,2
TH1,2
The
A
Rising
OSENSE1,2
= 25°C (Note 2). V
Voltage = 1.2V
Voltage = 1.2V
l
LIM
LIM
LIM
LIM
LIM
LIM
SENSE1,2
denotes the specifi cations which apply over the full operating
= 0V
= Float (Note 8)
= INTV
= 0V
= Float (Note 8)
= INTV
CC
CC
CC
CC
CC
CC
with VID Pins Floating
CC
CC
, VID12 = VID22 = GND
, VID12 = VID22 = Float
, VID12 = VID22 = INTV
, VID12 = VID22 = GND
, VID12 = VID22 = Float
, VID12 = VID22 = INTV
= 3.3V
TH
TH
Voltage = 1.2V to 0.7V
Voltage = 1.2V to 1.6V
IN
= 15V, V
CC
CC
CC
CC
RUN1,2
CC
CC
= 5V unless otherwise noted.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1.089
0.990
1.188
1.485
0.596
1.782
2.463
3.251
4.925
1.084
0.985
1.182
1.478
0.593
1.773
2.450
3.234
4.900
MIN
0.64
–63
–65
4.5
0.9
1.1
94
24
44
68
22
42
66
1.100
1.000
1.200
1.500
0.602
1.800
2.500
3.300
5.000
1.100
1.000
1.200
1.500
0.602
1.800
2.500
3.300
5.000
0.002
–0.01
0.55
0.66
1.22
TYP
–10
–53
–53
0.01
2.2
3.3
1.3
4.5
2.6
1.5
30
±1
95
80
30
50
75
30
50
75
3
3
1.111
1.010
1.212
1.515
0.608
1.818
2.538
3.350
5.075
1.117
1.015
1.218
1.523
0.611
1.827
2.550
3.366
5.100
MAX
0.02
–0.1
0.68
1.35
–50
–43
–41
1.7
38
50
±2
36
56
82
38
58
84
0.1
UNITS
mmho
3865fb
%/V
mA
mV
mV
mV
mV
mV
mV
mV
mV
mV
nA
μA
μA
μA
μA
%
%
%
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V