LTC3709_15 Datasheet, PDF (4/24 Pages) Linear Technology – Fast 2-Phase, No RSENSE Synchronous DC/DC Controller with Tracking/Sequencing

LTC3709
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = DRV_CC = 5V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
Phase-Lock Loop
I_{INTPLL_SOURCE}
I_{INTPLL_SINK}
I_{EXTPLL_SOURCE}
I_{EXTPLL_SINK}
V_FCB(DC)
V_FCB(AC)
t_ON(PLL)1
Internal PLL Sourcing Current
Internal PLL Sinking Current
External PLL Sourcing Current
External PLL Sinking Current
Forced Continuous Threshold
Clock Input Threshold
t_ON1 Modulation Range by External PLL
Up Modulation
Down Modulation
t_ON(PLL)2
t_ON2 Modulation Range by Internal PLL
Up Modulation
Down Modulation
Differential Amplifier
Measured with a DC Voltage at FCB Pin
Measured with a AC Pulse at FCB Pin
I_ON1 = 180µA, V_EXTPLL = 1.8V
I_ON1 = 180µA, V_EXTPLL = 0.6V
I_ON2 = 180µA, V_INTPLL = 1.8V
I_ON2 = 180µA, V_INTPLL = 0.6V
20
– 20
20
– 20
1.9
2.1
2.3
1
1.5
2
186 233
58
80
186 233
58
80
A_V
Differential Gain
V_OS
Input Offset Voltage
IN⁺ = IN^– = 1.2V, I_OUT = 1mA,
Input Referred; Gain = 1
0.995
1.000
0.5
1.005
7
CM
CMRR
Common Mode Input Voltage Range
Common Mode Rejection Ratio
I_OUT = 1mA
0V < IN⁺ = IN^– < 5V, I_OUT = 1mA,
Input Referred
0
5
45
70
I_CL
GBP
SR
V_O(MAX)
R_IN
Output Current
Gain Bandwidth Product
Slew Rate
Maximum High Output Voltage
Input Resistance
I_OUT = 1mA
R_L = 2k
I_OUT = 1mA
Measured at IN⁺ Pin
10
40
2
5
V_CC – 1.2 V_CC – 0.8
80
UNITS
µA
µA
µA
µA
V
V
ns
ns
ns
ns
V/V
mV
V
dB
mA
MHz
V/µs
V
kΩ
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: T_J is calculated from the ambient temperature T_A and power
dissipation P_D as follows:
LTC3709EUH: T_J = T_A + (P_D • 34°C/W)
LTC3709EG: T_J = T_A + (P_D • 95°C/W)
Note 3: The LTC3709 is tested in a feedback loop that adjusts V_FB to
achieve a specified error amplifier output voltage (I_TH).
Note 4: The LTC3709E 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 5: R_DS(ON) limit is guaranteed by design and/or correlation to static
test.
3709fb
4