LTC3735 LINER [Linear Technology], LTC3735 Datasheet - Page 4

• Manufacturer Part Number: LTC3735
• Description: 2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
• Manufacturer: LINER [Linear Technology]

LTC3735
ELECTRICAL CHARACTERISTICS
SYMBOL
Oscillator
I
f
f
f
PGOOD Output
V
I
V
t
t
Operational Amplifier
I
V
CM
CMRR
I
A
GBP
SR
V
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 LTC3735E 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
4
temperature range, otherwise specifications are at T
FREQSET
NOM
LOW
HIGH
PGOOD
MASK
DELAY
B
CL
PGL
PG
OS
VOL
O(MAX)
LTC3735EG: T
LTC3735EUHF: T
J
is calculated from the ambient temperature T
D
PARAMETER
FREQSET Input Current
Nominal Frequency
Lowest Frequency
Highest Frequency
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Thresholds
PGOOD Mask Timer
MCH_PG Delay Time
Input Bias Current
Input Offset Voltage Magnitude
Common Mode Input Voltage Range
Common Mode Rejection Ratio
Output Source Current
Open-Loop DC Gain
Gain-Bandwidth Product
Slew Rate
Maximum High Output Voltage
according to the following formula:
J
= T
J
= T
A
+ (P
A
+ (P
D
• 85°C/W)
D
• 34°C/W)
CONDITIONS
V
V
V
V
I
V
V
V
I
I
I
R
I
PGOOD
OUT
OUT
OUT
OUT
FREQSET
FREQSET
FREQSET
FREQSET
PGOOD
FB
OA
L
A
V
V
FB
FB
= 2k
and power
+ = V
with Respect to Set Output Voltage
= 1mA
= 1mA
= 1mA
= 1mA
Ramping Negative
Ramping Positive
A
= 2mA
= 5V
= 25°C. V
OA
= 0V
= 1.2V
= 0V
≥ 2.4V
– 1.2V, I
The
l
OUT
PVCC
denotes the specifications which apply over the full operating
= 1mA
= 5V, V
Note 4: The LTC3735 is tested in a feedback loop that servos V
specified voltage and measures the resultant 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: The ATTEN
accuracy specified at VID code = 010110.
RUN/SS
= 5V unless otherwise noted.
ERR
specification is in addition to the output voltage
P
VCC
MIN
MAX
320
190
490
100
–7
46
10
0
7
– 1.2 P
(see Minimum On-Time
VCC
FB
TYP
355
210
550
–10
110
0.1
0.8
–2
15
15
70
35
30
11
2
5
.
– 0.9
P
VCC
MAX
390
240
610
–13
120
200
0.3
–1
±1
13
5
– 1.4
ITH
to a
UNITS
cycles
3735fa
V/mV
MHz
V/µs
kHz
kHz
kHz
mV
mA
µA
µA
nA
dB
µs
%
%
V
V
V