lt3692a Linear Technology Corporation, lt3692a Datasheet - Page 3

• Manufacturer Part Number: lt3692a
• Description: Monolithic Dual Tracking 3.5a Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
SHDN Voltage Threshold Ch 1/2
SHDN Input Current Ch 1/2
V
V
V
V
V
V
Feedback Voltage Ch 1/2
Feedback Voltage Regulation
Feedback Voltage Offset Ch 1 to Ch 2
Feedback Bias Current Ch 1/2
T
T
Error Amp g
Error Amp Source Current Ch 1/2
Error Amp Sink Current Ch 1/2
Error Amp High Clamp Ch 1/2
Error Amp Switching Threshold Ch 1/2
Soft-Start Source Current Ch 1/2
Soft-Start V
Soft-Start Sink Current Ch 1/2
Soft-Start V
Soft-Start to Feedback Offset Ch 1/2
Soft-Start Sink Current Ch 1/2 POR
Soft-Start SW Disable Ch 1/2
CMPI Bias Current Ch 1/2
CMPO Leakage Ch 1/2
CMPI Threshold Ch 1/2
CMPI Threshold Ch 1/2 of V
CMPI Hysteresis Ch 1/2
CMPO Sink Current Ch 1/2
RT/SYNC Reference Current
Minimum Switching Frequency
Switching Frequency
Maximum Switching Frequency
Switching Phase Angle Ch 1 ≥ Ch 2
DIV Reference Current
CH1 DIV 2 Threshold
J
J
IN1
IN
IN1
IN2
IN1
IN2
Output Voltage (Note 6)
Error
Overvoltage Lockout Ch 1/2 (Note 5)
Undervoltage Lockout (Note 4)
Shutdown Current
Shutdown Current
Quiescent Current
Quiescent Current
OH
OL
m
Ch 1/2
Ch 1/2
Ch 1/2
FB1/2
CONDITIONS
V
V
V
V
V
V
V
V
V
T
I
I
Temperature = 25°C to 125°C
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
R
R
R
V
R
TJ
TJ
J
SHDN
SHDN
SHDN
SHDN
SHDN
VC1/2
VIN1/2
VC1/2
VC1/2
VC1/2
FB1/2
FB1/2
FB1/2
FB1/2
FB1/2
FB1/2
FB1/2
FB1/2
VC1/2
FB1/2
FB1/2
CMPI1/2
CMPI1/2
CMPI1/2
CMPI1/2
CMPI1/2
CMPI1/2
RT/SYNC
RT/SYNC
RT/SYNC
RT/SYNC
DIV
RT/SYNC
= 25°C, I
= 25μA, Temperature = 125°C
= 25μA, Temperature = –40°C
= 1V
= 0.7V, V
=0.9V, V
= 0.7V
= 0V
= 2V, V
= 2V
= 0.7V, V
= 0V
= 2V, V
= 0V (Note 7)
= 1.35V
= 0V
= 0V
= 2V
= 2V
= 1V
= 1V
= 1V
= 1V, I
= 1V, V
= 3V to 35V, V
= 0.8V
= 0.8V, V
Rising
Rising (Note 8)
= 0.6V, V
= 0.36V
=0Ω
= 28k
=100k
= 0V
A
TJ
= 25°C. V
VC1/2
SS1/2
SS1/2
SS1/2
= 25μA, Temperature = 25°C
VC1/2
VC1/2
SS1/2
The
CMPO1/2
CMPO1/2
= ±10μA
= 0.07V
= 0.14V (Note 7)
= 0.4V
= 1V
= 1V
= 2V
VC1/2
l
VIN1/2
denotes the specifications which apply over the full operating
= 40V,
= 0.2V,
= 0.5V to 1.4V
= 15V unless otherwise specified. (Note 3)
l
l
l
l
l
l
l
l
l
l
l
l
l
–100
–100
1.24
11.3
2.25
0.45
MIN
400
790
780
–13
300
120
–12
150
700
200
925
2.5
1.7
0.7
9.5
1.9
0.7
9.5
–1
36
17
20
95
86
35
50
3
0
–380
1.32
1.23
2.15
0.58
TYP
630
806
806
250
400
160
400
115
720
300
110
185
2.8
1.9
0.9
1.4
2.5
39
85
25
28
12
70
90
60
12
12
0
6
0
4
0
0
0
0
1
LT3692A
1000
1075
MAX
1.08
14.5
12.7
14.5
0.61
822
830
200
100
500
200
600
150
100
500
760
150
1.4
3.1
2.1
2.4
3.0
43
13
13
33
36
12
94
85
1
2
5
2
UNITS
μMho
3692af
3
MHz
MHz
Deg
kHz
mA
mV
mV
mV
mV
mV
mV
mA
mV
mV
mV
mV
mV
μA
μA
μA
μA
nA
μA
μA
μA
μA
nA
nA
μA
μA
μA
%
V
V
V
V
V
V
V
V