LTC3703
elecTrical characTerisTics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = DRVCC = VBOOST = VIN = 10V, VMODE/SYNC = VINV = VSW
BGRTN = 0V, RUN/SS = IMAX = open, RSET = 25k, unless otherwise specified.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
l
l
l
V
V
, DRV
V
V
V
, DRV Supply Voltage
9.3
15
100
2.5
V
V
CC
IN
CC
CC
IN
CC
Pin Voltage
I
I
I
Supply Current
V = 0V
FB
1.7
50
mA
µA
CC
CC
RUN/SS = 0V
DRV Supply Current
(Note 5)
RUN/SS = 0V
0
0
5
5
µA
µA
DRVCC
BOOST
CC
l
l
BOOST Supply Current
(Note 5) T ≤ 125°C
360
360
0
500
800
5
µA
µA
µA
J
T > 125°C
J
RUN/SS = 0V
Main Control Loop
V
Feedback Voltage
(Note 4)
0.792
0.788
0.800
0.808
0.812
V
V
FB
l
l
l
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
MODE/SYNC Threshold
MODE/SYNC Hysteresis
MODE/SYNC Current
9V < V < 15V (Note 4)
0.007
0.01
0.81
20
0.05
0.1
%/V
%
∆V
∆V
CC
FB(LINE)
FB(LOAD)
1V < V
< 2V (Note 4)
COMP
V
MODE/SYNC Rising
0.75
1
0.87
V
MODE/SYNC
mV
µA
V
∆V
MODE/SYNC
MODE/SYNC
I
0 ≤ V
≤ 15V
0
1
2
1
MODE/SYNC
V
Invert Threshold
1.5
0
INV
INV
VIN
I
I
Invert Current
0 ≤ V ≤ 15V
µA
INV
V
Sense Input Current
V
= 100V
IN
100
0
140
1
µA
µA
IN
RUN/SS = 0V, V = 10V
IN
I
I
Source Current
V = 0V
IMAX
10.5
12
13.5
µA
MAX
MAX
V
V
Offset Voltage
|V | – V
at I = 0µA
RUN/SS
–25
–25
10
10
55
65
mV
mV
OS(IMAX)
IMAX
SW
IMAX
H Grade
V
Shutdown Threshold
0.7
2.5
9
0.9
4
1.2
5.5
25
V
µA
µA
RUN/SS
RUN/SS
I
RUN/SS Source Current
Maximum RUN/SS Sink Current
Undervoltage Lockout
RUN/SS = 0V
|V | – V
≥ 200mV, V = 3V
RUN/SS
17
SW
IMAX
l
l
V
V
V
Rising
8.0
5.7
8.7
6.2
9.3
6.8
V
V
UV
CC
CC
Falling
= 25k
Oscillator
f
f
t
Oscillator Frequency
R
270
100
300
330
600
kHz
kHz
ns
OSC
SET
External Sync Frequency Range
Minimum On-Time
SYNC
200
93
ON(MIN)
DC
Maximum Duty Cycle
f < 200kHz
89
1.5
1.5
96
%
MAX
Driver
I
BG Driver Peak Source Current
2
1
2
1
A
Ω
A
BG(PEAK)
R
BG Driver Pull-Down R
(Note 8)
(Note 8)
(Note 4)
1.5
1.5
BG(SINK)
DS(ON)
I
TG Driver Peak Source Current
TG Driver Pull-Down R
TG(PEAK)
R
Ω
TG(SINK)
DS(ON)
Feedback Amplifier
Op Amp DC Open Loop Gain
A
74
5
85
25
0
dB
MHz
µA
VOL
f
I
I
Op Amp Unity Gain Crossover Frequency (Note 6)
U
FB Input Current
0 ≤ V ≤ 3V
1
FB
FB
COMP Sink/Source Current
10
mA
COMP
3703fc
3
Linear Systems [ Linear Systems ]
