LTC3890EGN-1#TRPBF Linear Technology, LTC3890EGN-1#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LTC3890EGN-1#TRPBF
• Description: IC BUCK SYNC ADJ DUAL 28SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3890EGN-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 24 V
• Frequency - Switching: 350kHz ~ 535kHz
• Voltage - Input: 4 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
I
V
V
g
I
UVLO
V
I
I
DF
I
V
V
V
V
Gate Driver
TG1,2
BG1,2
TG1,2 t
TG1,2 t
BG1,2 t
BG1,2 t
temperature range, otherwise specifications are at T
FB1,2
Q
SENSE
SENSE
TRACK/SS1,2
m1,2
IN
FB1,2
REFLNREG
LOADREG
OVL
RUN1
RUN2
RUN1,2
SENSE(MAX)
MAX
+
–
On
On
r
f
r
f
Hyst RUN Pin Hysteresis
PARAMETER
Input Supply Operating Voltage Range
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
Transconductance Amplifier g
Input DC Supply Current
Pulse-Skipping or Forced Continuous
Mode (One Channel On)
Pulse-Skipping or Forced Continuous
Mode (Both Channels On)
Sleep Mode (One Channel On)
Sleep Mode (Both Channels On)
Shutdown
Undervoltage Lockout
Feedback Overvoltage Protection
SENSE
SENSE
Maximum Duty Factor
Soft-Start Charge Current
RUN1 Pin On Threshold
RUN2 Pin On Threshold
Maximum Current Sense Threshold
Pull-Up On-Resistance
Pull-Down On-Resistance
Pull-Up On-Resistance
Pull-Down On-Resistance
TG Transition Time:
BG Transition Time:
Rise Time
Fall Time
Rise Time
Fall Time
+
–
Pin Current
Pins Current
m
CONDITIONS
I
–40°C to 85°C, All Grades
LTC3890E-1, LTC3890I-1,
LTC3890H-1, LTC3890MP-1
(Note 4)
V
(Note 4)
Measured in Servo Loop,
Δ
(Note 4)
Measured in Servo Loop,
Δ
I
(Note 5)
RUN1 = 5V and RUN2 = 0V, V
RUN1 = 0V and RUN2 = 5V, V
RUN1,2 = 5V, V
RUN1 = 5V and RUN2 = 0V, V
RUN1 = 0V and RUN2 = 5V, V
RUN1,2 = 5V, V
RUN1,2 = 0V
INTV
INTV
Measured at V
Each Channel
Each Channel
V
V
In Dropout
V
V
V
V
(Note 6)
C
C
(Note 6)
C
C
TH1,2
TH1,2
IN
SENSE
SENSE
TRACK1,2
RUN1
RUN2
FB1,2
LOAD
LOAD
LOAD
LOAD
ITH
ITH
A
= 4.5V to 60V (Note 4)
= 25°C. V
CC
CC
Voltage = 1.2V to 0.7V
Voltage = 1.2V to 2V
Voltage = 1.2V (Note 4)
= 1.2V, Sink/Source = 5μA (Note 4)
= 0.7V, V
Rising
Rising
= 3300pF
= 3300pF
= 3300pF
= 3300pF
–
–
Ramping Up
Ramping Down
< INTV
> INTV
= 0V
The
FB1,2
FB1,2
FB1,2
l
CC
CC
SENSE1
IN
denotes the specifications which apply over the full operating junction
– 0.5V
+ 0.5V
= 12V, V
, Relative to Regulated V
= 0.83V (No Load)
= 0.83V (No Load)
–,
2
– = 3.3V, I
RUN1,2
FB1
FB2
FB1
FB2
= 0.83V or
= 0.83V
= 0.83V or
= 0.83V
LIM
= 5V, EXTV
= 0
FB1,2
CC
= 0V unless otherwise noted. (Note 2)
l
l
l
l
l
l
l
l
l
0.792
0.788
0.786
1.15
1.20
MIN
3.6
0.7
98
64
4
7
0.800
0.800
0.800
0.002
–0.01
LTC3890-1
0.01
3.92
3.80
1.21
1.25
TYP
700
1.0
2.5
1.5
2.4
1.1
±5
50
60
14
10
99
50
75
25
25
25
25
2
2
2
0.808
0.812
0.812
MAX
0.02
–0.1
1.27
1.30
±50
100
0.1
4.2
4.0
1.4
60
75
25
13
±1
±1
85
UNITS
mmho
38901fa
3
%/V
mA
mA
mV
mV
nA
μA
μA
μA
μA
μA
μA
μA
ns
ns
ns
ns
%
%
%
%
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V