LTC3616 LINER [Linear Technology], LTC3616 Datasheet - Page 4

• Manufacturer Part Number: LTC3616
• Description: 6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter
• Manufacturer: LINER [Linear Technology]

LTC3616
ELECTRICAL CHARACTERISTICS
SYMBOL
PGOOD
t
R
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3616E is guaranteed to meet performance specifications
over the 0°C to 85°C operating junction temperature range. Specifications
over the –40°C to 125°C operating junction temperature range are
assured by design, characterization and correlation with statistical process
controls. The LTC3616I is guaranteed to meet specifications over the
full –40°C to 125°C operating junction temperature range. Note that
the maximum ambient temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
Note 3: This parameter is tested in a feedback loop which servos V
the midpoint for the error amplifier (V
Note 4: External compensation on ITH pin.
TYPICAL PERFORMANCE CHARACTERISTICS
4
temperature range, otherwise specifications are at T
PGOOD
PGOOD
100
90
80
70
60
50
40
30
20
10
0
1
Efficiency vs Load Current
Burst Mode Operation (V
V
OUT
= 1.8V
10
OUTPUT CURRENT (mA)
PARAMETER
Power Good Voltage Windows
Power Good Blanking Time
Power Good Pull-Down On-Resistance
100
1000
MODE
ITH
V
V
V
IN
IN
IN
= 0.75V).
= 2.5V
= 3.3V
= 5V
3616 G01
= 0V)
10000
100
90
80
70
60
50
40
30
20
10
0
1
J
CONDITIONS
TRACK/SS = SV
Down
TRACK/SS = SV
Down
Entering and Leaving Window
Efficiency vs Load Current
Burst Mode Operation (V
V
= 25°C. V
OUT
= 1.2V
The
FB
to
10
OUTPUT CURRENT (mA)
l
IN
denotes the specifications which apply over the full operating junction
= 3.3V, RT/SYNC = SV
IN
IN
, Entering Window
, Leaving Window
100
Note 5: Tying the ITH pin to SV
AVP mode.
Note 6: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 7: See description of the TRACK/SS pin in the Pin Functions section.
Note 8: In sourcing mode the average output current is flowing out of SW
pin. In sinking mode the average output current is flowing into the SW Pin.
Note 9: See description of the MODE pin in the Pin Functions section.
Note 10: Guaranteed by correlation and design to wafer level
measurements for QFN packages.
Note 11: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
V
V
V
V
FB
FB
FB
FB
Ramping Up
Ramping
Ramping Up
Ramping
1000
MODE
V
V
V
IN
IN
IN
V
= 2.5V
= 3.3V
= 5V
IN
3616 G02
= 0V)
10000
= 3.3V, RT/SYNC = SV
IN
unless otherwise specified (Notes 1, 2, 11).
100
MIN
90
80
70
60
50
40
30
20
10
IN
–3
70
0
3
8
1
enables the internal compensation and
Efficiency vs Load Current
V
OUT
= 1.8V, V
10
IN
OUTPUT CURRENT (mA)
TYP
105
–6
–9
17
6
9
unless otherwise noted.
IN
= 3.3V
100
Burst Mode OPERATION
PULSE-SKIPPING
FORCED CONTINUOUS
MAX
–11
140
11
33
1000
UNITS
3616 G03
10000
3616f
μs
%
%
%
%
Ω