LTC3714
ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
BG
PGND
SENSE
SW
TG
BOOST
VID0
VID1
VID2
1
2
3
4
5
6
7
8
9
28 INTV
CC
27 V
IN
26 EXTV
CC
25 VID4
24 VID3
23 V
OSENSE
22 VFB
21 I
ON
20 FCB
19 SGND
18 OPOUT
17 OP
+
16 OP
–
15 OPV
IN
Input Supply Voltage (V
IN
), I
ON
..................36V to – 0.3V
Boosted Topside Driver Supply Voltage
(BOOST) ................................................... 42V to – 0.3V
SW, SENSE Voltages ................................... 36V to – 5V
EXTV
CC
, (BOOST – SW), RUN/SS, VID0-VID4,
PGOOD, FCB Voltages ............................... 7V to – 0.3V
V
ON
, V
RNG
Voltages ................(INTV
CC
+ 0.3V) to – 0.3V
I
TH
, V
FB
, V
OSENSE
Voltages ....................... 2.7V to – 0.3V
TG, BG, INTV
CC
, EXTV
CC
Peak Currents .................... 2A
TG, BG, INTV
CC
, EXTV
CC
RMS Currents .............. 50mA
OPV
IN
, OP
+
, OP
– .......................................................
0V to 18V
Operating Ambient Temperature Range
LTC3714EG (Note 2) .......................... – 40°C to 85°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
LTC3714EG
RUN/SS 10
V
ON
11
PGOOD 12
V
RNG
13
I
TH
14
G PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 130°C/ W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL
I
Q
PARAMETER
Input DC Supply Current
Normal
Shutdown Supply Current
Feedback Reference Voltage
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
Error Amplifier Transconductance
Forced Continuous Threshold
Forced Continuous Current
On-Time
Minimum On-Time
Minimum Off-Time
Maximum Current Sense Threshold
Main Control Loop
The
q
denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25°C. V
IN
= 15V unless otherwise noted.
CONDITIONS
MIN
TYP
MAX
UNITS
900
15
I
TH
= 1.2V (Note 4)
V
IN
= 4V to 30V (Note 4), I
TH
= 1.2V
I
TH
= 0.5V to 1.9V (Note 4)
I
TH
= 1.2V (Note 4)
V
FCB
= 0.6V
I
ON
= 60µA, V
ON
= 1.5V
I
ON
= 180µA, V
ON
= 0V
I
ON
= 60µA, V
ON
= 1.5V
V
RNG
= 1V, V
FB
= 0.56V
V
RNG
= 0V, V
FB
= 0.56V
V
RNG
= INTV
CC
, V
FB
= 0.56V
V
RNG
= 1V, V
FB
= 0.64V
V
RNG
= 0V, V
FB
= 0.64V
V
RNG
= INTV
CC
, V
FB
= 0.64V
7.5
340
q
q
q
q
q
q
q
q
2000
30
0.606
– 0.3
2
0.63
–2
300
100
400
153
107
214
V
FB
∆V
FB(LINEREG)
∆V
FB(LOADREG)
g
m(EA)
V
FCB
I
FCB
t
ON
t
ON(MIN)
t
OFF(MIN)
V
SENSE(MAX)
0.594
0.600
0.002
– 0.05
1.4
0.57
200
1.7
0.6
–1
250
50
250
113
79
158
133
93
186
– 67
– 33
– 93
10
400
1.5
V
SENSE(MIN)
Minimum Current Sense Threshold
∆V
FB(OV)
∆V
FB(UV)
V
RUN/SS(ON)
Output Overvoltage Fault Threshold
Output Undervoltage Fault Threshold
RUN Pin Start Threshold
12.5
460
2
0.8
2
U
µA
µA
V
%/V
%
ms
V
µA
ns
ns
ns
mV
mV
mV
mV
mV
mV
%
mV
V
3714f
W
U
U
W W
W
LINER [ LINEAR TECHNOLOGY ]
