LTC3701 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC3701' PDF : 20 Pages View PDF
LTC3701
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (VIN)........................ – 0.3V to 10V
SENSE1–, SENSE2–, PGATE1, PGATE2,
PLLLPF, SENSE1+, SENSE2+,
EXTCLK/MODE Voltages .............. – 0.3V to (VIN + 0.3V)
VFB1, VFB2, ITH/RUN1,
ITH/RUN2 Voltages .................................. – 0.3V to 2.4V
PGOOD Voltage ........................................ – 0.3V to 10V
PGATE1, PGATE2 Peak Output Current (<10µs) ....... 1A
Operating Ambient Temperature Range
(Note 2) ...................................................–40°C to 85°C
Storage Ambient Temperature Range ... – 65°C to 150°C
Junction Temperature (Note 3) ............................ 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SENSE1– 1
ITH/RUN1 2
VFB1 3
SGND 4
VFB2 5
ITH/RUN2 6
PLLLPF 7
SENSE2– 8
TOP VIEW
16 SENSE1+
15 VIN
14 PGATE1
13 PGND
12 PGATE2
11 PGOOD
10 EXTCLK/MODE
9 SENSE2+
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 140°C/W
ORDER PART
NUMBER
LTC3701EGN
GN PART
MARKING
3701
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VIN = 4.2V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Main Control Loops
Input DC Supply Current
Normal Operation
Sleep Mode
Shutdown
UVLO
Undervoltage Lockout Threshold
Shutdown Threshold at ITH/RUN1, 2
Start-Up Current Source on ITH/RUN1, 2
Regulated Feedback Voltage
(Note 4)
2.5V < VIN < 9.8V
2.5V < VIN < 9.8V
2.5V < VIN < 9.8V, ITH/RUN1 = ITH/RUN2 = 0V
VIN < UVLO Threshold
VIN Falling
VIN Rising
VITH/RUN1, 2 = 0V
0°C to 70°C (Note 5), ITH/RUN = 1.3V
–40°C to 85°C (Note 5)
460
780
305
470
9
28
18
30
q 1.55 2.00 2.50
1.70 2.12 2.55
0.2 0.35 0.5
0.25 0.5 0.85
q 0.784 0.8 0.816
q 0.774 0.8 0.826
Output Voltage Line Regulation
Output Voltage Load Regulation
VFB1, 2 Input Current
Output Overvoltage Protect Threshold
Output Overvoltage Protect Hysteresis
2.5V < VIN < 9.8V (Note 5)
ITH/RUN = 0.9V (Note 5)
ITH/RUN = 1.6V
(Note 5)
Measured at VFB
0.05 0.20
0.2
0.8
– 0.2 – 0.8
10
50
0.835 0.88 0.930
20
Gate Drive 1, 2 Rise Time
Gate Drive 1, 2 Fall Time
Maximum Current Sense Voltage (SENSE+ – SENSE–)
CL = 3000pF
CL = 3000pF
(Note 6)
40
40
95
120
145
Soft-Start
Current Sense Voltage Step
30
Time to Maximum Sense Voltage
2048
UNITS
µA
µA
µA
µA
V
V
V
µA
V
V
mV/V
%
%
nA
V
mV
ns
ns
mV
mV
Cycles
3701fa
2
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