LTC3708 LINER [Linear Technology], LTC3708 Datasheet - Page 4

• Manufacturer Part Number: LTC3708
• Description: Fast 2-Phase, No RSENSE Buck Controller with Output Tracking
• Manufacturer: LINER [Linear Technology]

LTC3708
ELECTRICAL CHARACTERISTICS
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
reliabilty and lifetime.
Note 2: T
dissipation P
Note 3: The LTC3708 is tested in a feedback loop that adjusts V
achieve a specifi ed error amplifi er output voltage (I
TYPICAL PERFORMANCE CHARACTERISTICS
SYMBOL
I
t
t
4
temperature range, otherwise specifi cations are at T
INTLPF
ON(PLL)1
ON(PLL)2
T
J
= T
J
A
is calculated from the ambient temperature T
+ (P
D
as follows:
D
• 34°C/W)
100mV/DIV
100mV/DIV
PARAMETER
Internal Phase Detector Output Current
t
t
ON1
ON2
0.5V/DIV
0.5V/DIV
Sourcing Capability
Sinking Capability
Up Modulation
Down Modulation
Up Modulation
Down Modulation
10A/DIV
V
V
V
V
I
Modulation Range by External PLL
Modulation Range by Internal PLL
OUT1
OUT1
OUT2
OUT1
OUT2
Load Transient on Channel 1
Coincident Tracking
20μs/DIV
2ms/DIV
TH
).
A
and power
A
CONDITIONS
f
f
I
I
I
I
= 25°C. V
SW1
SW1
ON1
ON1
ON1
ON1
FB
3708 G01
3708 G03
to
= 60μA, V
= 60μA, V
= 60μA, V
= 60μA, V
< f
> f
The
SW2
SW2
l
CC
, V
, V
denotes the specifi cations which apply over the full operating
INTLPF
INTLPF
= 5V, DRV
EXTLPF
EXTLPF
EXTLPF
EXTLPF
Note 4: Internal reference voltage is tested indirectly by extracting error
amplifi er offset from the feedback voltage.
Note 5: The LTC3708E is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 6: R
test.
= 0V
= 2.4
= 1.8V
= 0.6V
= 1.8V
= 0.6V
100mV/DIV
100mV/DIV
CC
0.5V/DIV
0.5V/DIV
10A/DIV
DS(ON)
V
V
V
V
= 5V, unless otherwise noted.
I
OUT2
OUT1
OUT2
OUT1
OUT2
limit is guaranteed by design and/or correlation to static
Load Transient on Channel 2
Ratiometric Tracking
20μs/DIV
2ms/DIV
MIN
186
186
TYP
–20
233
233
58
58
20
3708 G02
3708 G04
MAX
80
80
UNITS
3708fb
μA
μA
ns
ns
ns
ns