LTC3734 LINER [Linear Technology], LTC3734 Datasheet - Page 3

• Manufacturer Part Number: LTC3734
• Description: Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
I
UVR
I
V
V
V
I
I
I
DF
TG t
TG t
BG t
BG t
TG/BG t
BG/TG t
t
VID Parameters
R
ATTEN
VID
VID
VID
Oscillator
I
f
f
f
PGOOD Output
V
I
V
t
t
SYMBOL
Q
RUN/SS
SCL
SDLHO
SENSE
ON(MIN)
FREQSET
NOM
LOW
HIGH
PGOOD
MASK
DELAY
RUN/SS
RUN/SSARM
RUN/SSLO
PGL
PG
ATTEN
MAX
THLOW
THHIGH
LEAK
r
f
r
f
ERR
1D
2D
PARAMETER
Input DC Supply Current
Undervoltage RUN/SS Reset
Soft-Start Charge Current
RUN/SS Pin ON Threshold
RUN/SS Pin Latchoff Arming
RUN/SS Pin Latchoff Threshold
RUN/SS Discharge Current
Shutdown Latch Disable Current
Total Sense Pins Source Current
Maximum Duty Factor
Top Gate Transition Time:
Bottom Gate Transition Time:
Top Gate Off to Bottom Gate On Delay C
Synchronous Switch-On Delay Time
Bottom Gate Off to Top Gate On Delay C
Top Switch-On Delay Time
Minimum On-Time
VID Top Resistance
Resistive Divider Error
VID0 to VID5 Logic Threshold Low
VID0 to VID5 Logic Threshold High
VID0 to VID5 Leakage
FREQSET Input Current
Nominal Frequency
Lowest Frequency
Highest Frequency
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level
PGOOD Mask Timer
MCH_PG Delay Time
Rise Time
Fall Time
Rise Time
Fall Time
Normal Mode
Shutdown
CONDITIONS
(Note 5)
V
V
V
V
V
V
Soft Short Condition V
V
V
In Dropout
(Note 6)
C
C
(Note 6)
C
C
Tested with a Square Wave (Note 7)
(Note 8)
V
V
V
V
I
V
V
PGOOD
RUN/SS
CC
RUN/SS
RUN/SS
RUN/SS
RUN/SS
FB
SENSE
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
FREQSET
FREQSET
FREQSET
FREQSET
PGOOD
FB
V
V
FB
FB
= 0.375V, V
with Respect to Set Output Voltage
Lowered Until the RUN/SS Pin is Pulled Low
Ramping Negative
Ramping Positive
A
= 3300pF
= 3300pF
= 3300pF
= 3300pF
= 3300pF (Note 6)
= 3300pF (Note 6)
– = V
= 2mA
= 5V
= 25°C. V
= 0V
= 1.9V
Rising
Rising from 3V
Ramping Negative
= 0V
= 1.2V
= 0V
≥ 2.4V
SENSE
The
RUN/SS
+ = 0V
PVCC
●
denotes the specifications which apply over the full operating
FB
= 4.5V
= V
= 0.375V, V
SVCC
= 5V, V
RUN/SS
RUN/SS
= 4.5V
= 5V unless otherwise noted.
●
– 0.25
–2.3
MIN
– 85
320
190
490
100
3.2
1.0
0.7
–5
95
– 7
7
–1.5
–1.5
98.5
5.33
TYP
– 60
– 10
100
355
210
550
110
3.7
1.5
3.9
3.2
1.5
0.1
30
40
60
50
50
60
– 2
20
15
2
10
LTC3734
MAX
– 0.8
0.25
100
390
240
610
– 13
120
4.2
1.9
0.3
0.3
–1
±1
90
90
90
90
±1
3
5
13
UNITS
cycles
3
3734f
kHz
kHz
kHz
mA
kΩ
μA
μA
μA
μA
μA
μA
μA
μA
ns
ns
ns
ns
ns
ns
ns
μs
%
%
%
%
V
V
V
V
V
V
V