LTC3719EG Linear Technology, LTC3719EG Datasheet - Page 4

• Manufacturer Part Number: LTC3719EG
• Description: IC SW REG SYNC STEP-DOWN 36-SSOP
• Manufacturer: Linear Technology

Specifications of LTC3719EG

• Applications: Controller, AMD Opteron™
• Voltage - Input: 4 ~ 36 V
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 1.55 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS
LTC3719
temperature range, otherwise specifications are at T
SYMBOL
Oscillator and Phase-Locked Loop
f
f
f
R
I
R
PGOOD Output
V
I
V
Differential Amplifier/Op Amp Gain Block
A
CMRR
R
Note 1: Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2: The LTC3719EG is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the – 40 C to 85 C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: T
dissipation P
Note 4: The LTC3719 is tested in a feedback loop that servos V
specified voltage and measures the resultant V
4
NOM
LOW
HIGH
PLLFLTR
PGOOD
PGL
PG
DA
PLLIN
RELPHS
IN
LTC3719EG: T
DA
J
is calculated from the ambient temperature T
D
PARAMETER
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Controller 2-Controller 1 Phase
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level, Either Controller
Differential Amplifier Gain
Common Mode Rejection Ratio
Input Resistance
according to the following formula:
Sinking Capability
Sourcing Capability
J
= T
A
+ (P
D
• 85 C/W)
EAIN
.
A
CONDITIONS
V
V
V
f
f
I
V
V
V
0V < V
Measured at V
PLLIN
PLLIN
PGOOD
and power
PLLFLTR
PLLFLTR
PLLFLTR
PGOOD
EAIN
AMPMD
V
V
EAIN
EAIN
A
with Respect to Set Output Voltage
< f
> f
= 25 C. V
CM
ITH
= 2mA
Ramping Negative
Ramping Positive
= 5V
= 0V
OSC
OSC
= 1.2V
= 0V
< 5V; V
to a
2.4V
The
OS
+ Input; V
IN
AMPMD
denotes the specifications which apply over the full operating
= 15V, V
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7: The minimum on-time condition corresponds to the on inductor
peak-to-peak ripple current 40% I
Considerations in the Applications Information section).
Note 8: Each built-in pull-up resistor attached to the VID inputs also has a
series diode to allow input voltages higher than the VIDV
damage or clamping (see the Applications Information section).
= 0V
AMPMD
BIAS
= 0V
= 5V, V
RUN/SS
= 5V unless otherwise noted.
MAX
0.995
MIN
190
120
280
– 8
46
8
(see Minimum On-Time
TYP
– 15
– 10
220
140
310
180
0.1
50
15
55
80
10
1
CC
1.005
MAX
– 12
250
160
360
0.3
supply without
12
1
sn3719 3719fs
UNITS
Deg
kHz
kHz
kHz
V/V
k
k
dB
%
%
A
A
V
A