LTC3890EGN-1 LINER [Linear Technology], LTC3890EGN-1 Datasheet - Page 3

• Manufacturer Part Number: LTC3890EGN-1
• Description: 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
SYMBOL
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
TG/BG t
BG/TG t
t
INTV
V
V
V
junction temperature range, otherwise specifi cations are at T
Q
SENSE
SENSE
TRACK/SS1,2
ON(MIN)
m1,2
OVL
RUN1
RUN2
RUN1,2
SENSE(MAX)
INTVCCVIN
LDOVIN
INTVCCEXT
MAX
CC
+
–
On
On
r
f
r
f
Linear Regulator
1D
1D
Hyst RUN Pin Hysteresis
PARAMETER
Transconductance Amplifi er g
Input DC Supply Current
Pulse Skip or Forced Continuous Mode
(One Channel On)
Pulse Skip 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:
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time
Minimum On-Time
Internal V
INTV
Internal V
Rise Time
Fall Time
Rise Time
Fall Time
CC
+
–
Load Regulation
Pin Current
Pins Current
CC
CC
Voltage
Voltage
m
CONDITIONS
I
(Note 5)
RUN1 = 5V and RUN2 = 0V or
RUN1 = 0V and RUN2 = 5V,
V
RUN1,2 = 5V, V
RUN1 = 5V and RUN2 = 0V or
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
C
C
(Note 7)
6V < V
I
6V < V
TH1,2
CC
TRACK1,2
FB1
FB1
SENSE
SENSE
RUN1
RUN2
FB1,2
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
= 0mA to 50mA, V
CC
CC
= 0.83V (No Load)
= 0.83V (No Load)
= 1.2V, Sink/Source = 5μA (Note 4)
= 0.7V, V
= 3300pF
= 3300pF
= 3300pF
= 3300pF
= 3300pF Each Driver
= 3300pF Each Driver
IN
EXTVCC
Rising
Rising
–
–
Ramping Up
Ramping Down
< INTV
> INTV
< 60V, V
= 0V
The
J
< 13V
FB1,2
= 25°C. V
FB1,2
FB1,2
SENSE1
CC
CC
l
EXTVCC
denotes the specifi cations which apply over the full operating
– 0.5V
+ 0.5V
, Relative to Regulated V
= 0.83V (No Load)
= 0.83V (No Load)
–,
EXTVCC
2
= 0V
– = 3.3V, I
IN
= 12V, V
= 0V
LIM
RUN1,2
= 0
FB1,2
= 5V, EXTV
l
l
l
l
l
CC
1.15
1.20
4.85
4.85
MIN
3.6
0.7
98
64
= 0V unless otherwise noted.
7
LTC3890-1
1.21
1.25
TYP
700
4.0
3.8
1.0
2.5
1.5
2.4
1.1
5.1
0.7
5.1
50
60
14
10
99
50
75
25
25
25
25
30
30
95
2
2
2
MAX
1.27
1.30
5.35
5.35
100
4.2
4.0
1.4
1.1
75
25
13
±1
±1
85
UNITS
mmho
38901f
3
mA
mA
mV
mV
μA
μA
μA
μA
μA
μA
μA
ns
ns
ns
ns
ns
ns
ns
%
%
%
Ω
Ω
Ω
Ω
V
V
V
V
V
V