ltc3711 Linear Technology Corporation, ltc3711 Datasheet - Page 2

• Manufacturer Part Number: ltc3711
• Description: 5-bit Adjustable, Wide Operating Range, No Rsense? Step-down Controller
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
ELECTRICAL CHARACTERISTICS
LTC3711
(Note 1)
Input Supply Voltage
Boosted Topside Driver Supply Voltage
SW, SENSE
EXTV
VID0-VID4, PGOOD Voltages ..................... 7V to – 0.3V
FCB, V
I
TG, BG, INTV
TG, BG, INTV
Operating Ambient Temperature Range
Junction Temperature (Note 3) ............................ 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
2
temperature range, otherwise specifications are T
SYMBOL
Main Control Loop
I
V
I
g
V
I
t
t
t
V
V
V
TH
Q
FB
FCB
ON
ON(MIN)
OFF(MIN)
m(EA)
FB
V
V
FCB
SENSE(MAX)
SENSE(MIN)
V
FB(UV)
FB(LINEREG)
FB(LOADREG)
FB(OV)
V
BOOST .................................................. 42V to – 0.3V
LTC3711EGN (Note 2) ........................ – 40 C to 85 C
, V
IN
CC
FB
, I
ON
, (BOOST – SW), RUN/SS,
, V
ON
, V
OSENSE
..................................................36V to – 0.3V
RNG
+
PARAMETER
Input DC Supply Current
Feedback Reference Voltage
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
Feedback Input Current
Error Amplifier Transconductance
Forced Continuous Threshold
Forced Continuous Pin Current
On-Time
Minimum On-Time
Minimum Off-Time
Maximum Current Sense Threshold
Minimum Current Sense Threshold
Output Overvoltage Fault Threshold
Output Undervoltage Fault Threshold
CC
CC
Voltages ................................. 36V to – 5V
Normal
Shutdown Supply Current
V
V
, EXTV
, EXTV
PGND
PGND
Voltages .......... INTV
Voltages ....................... 2.7V to – 0.3V
W
– V
– V
CC
CC
SENSE
SENSE
Peak Currents .................... 2A
RMS Currents .............. 50mA
+
+
W W
CC
+ 0.3V to – 0.3V
A
U
= 25 C. V
CONDITIONS
I
V
I
V
I
V
I
I
I
I
V
V
V
V
V
V
TH
TH
TH
ON
ON
ON
ON
IN
FB
FCB
RNG
RNG
RNG
RNG
RNG
RNG
= 1.2V (Note 4)
= 0.5V to 1.9V (Note 4)
= 1.2V (Note 4)
= 4V to 30V, I
= 60 A, V
= 30 A, V
= 180 A, V
= 60 A, V
= 0.8V
The
= 0.8V
= 1V, V
= 0V, V
= INTV
= 1V, V
= 0V, V
= INTV
IN
= 15V unless otherwise noted.
denotes specifications which apply over the full operating
CC
CC
FB
FB
FB
FB
ON
ON
ON
ON
, V
, V
= 0.76V
= 0.76V
= 0.84V
= 0.84V
= 1.5V
= 1.5V
= 1.5V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TH
FB
FB
= 0V
= 0.76V
= 0.84V
= 1.2V (Note 4)
V
RUN/SS
PGOOD
OSENSE
SGND
V
VID2
VID3
V
RNG
FCB
V
I
I
ON
ON
TH
FB
T
JMAX
24-LEAD PLASTIC SSOP
10
11
12
1
2
3
4
5
6
7
8
9
= 125 C,
GN PACKAGE
TOP VIEW
JA
= 130 C/ W
24
23
22
21
20
19
18
17
16
15
14
13
VID1
VID0
BOOST
TG
SW
SENSE
PGND
BG
INTV
V
EXTV
VID4
0.792
IN
MIN
0.76
212
425
113
158
520
1.4
5.5
79
CC
CC
U
+
– 0.05
0.800
0.002
TYP
– 67
– 47
– 93
900
250
500
250
133
186
600
– 5
1.7
0.8
– 1
7.5
15
50
93
ORDER PART
LTC3711EGN
W
NUMBER
0.808
2000
MAX
– 0.3
0.84
288
575
100
400
153
107
214
680
9.5
30
– 2
2
50
UNITS
U
3711f
%/V
mS
mV
mV
mV
mV
mV
mV
mV
nA
ns
ns
ns
ns
%
%
A
A
V
V
A