LTC3709 Linear Technology, LTC3709 Datasheet - Page 3

• Manufacturer Part Number: LTC3709
• Description: No RSENSE Synchronous DC/DC Controller
• Manufacturer: Linear Technology

www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
∆V
∆V
V
V
V
I
I
UVLO
TG R
TG R
BG R
BG R
Tracking
I
V
PGOOD Output
∆V
∆V
PG Delay
∆V
I
V
Phase-Lock Loop
I
I
I
I
V
V
t
t
temperature range, otherwise specifications are at T
RUN/SS(C)
RUN/SS(D)
TRACK
PGOOD
INTPLL_SOURCE
INTPLL_SINK
EXTPLL_SOURCE
EXTPLL_SINK
ON(PLL)1
ON(PLL)2
SENSE(MAX)
SENSE(MIN)
RUN/SS(ON)
RUN/SS(LE)
RUN/SS(LT)
FB(TRACK)
PGL
FCB(DC)
FCB(AC)
FB(OV)
FB(UV)
FBH
FBL
FB(HYS)
UP
DOWN
UP
DOWN
Maximum Current Sense Threshold
Minimum Current Sense Threshold
Overvoltage Fault Threshold
Undervoltage Fault Threshold
RUN Pin Start Threshold
RUN Pin Latchoff Enable Threshold
RUN Pin Latchoff Threshold
Soft-Start Charge Current
Soft-Start Discharge Current
TG Driver Pull-Up On-Resistance
TG Driver Pull-Down On-Resistance
BG Driver Pull-Up On-Resistance
BG Driver Pull-Down On-Resistance
TRACK Pin Input Current
Feedback Voltage at Tracking
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Leakage Current
PGOOD Low Voltage
Internal PLL Sourcing Current
Internal PLL Sinking Current
External PLL Sourcing Current
External PLL Sinking Current
Forced Continuous Threshold
Clock Input Threshold
t
t
PARAMETER
Undervoltage Lockout
PGOOD Delay
ON1
ON2
Up Modulation
Down Modulation
Up Modulation
Down Modulation
Modulation Range by External PLL
Modulation Range by Internal PLL
A
= 25°C. V
CONDITIONS
V
V
V
V
V
V
RUN/SS Pin Rising
RUN/SS Pin Falling
Measured at V
TG High
TG Low
BG High
BG Low
I
V
V
V
V
V
V
V
V
I
Measured with a DC Voltage at FCB Pin
Measured with a AC Pulse at FCB Pin
I
I
I
I
The
TH
PGOOD
ON1
ON1
ON2
ON2
RNG
RNG
RNG
RNG
RNG
RNG
TRACK
TRACK
TRACK
FB
FB
FB
FB
PGOOD
= 1.2V, V
Rising
Falling
Falling
Returning
= 180µA, V
= 180µA, V
= 180µA, V
= 180µA, V
●
= 1V
= 0V
= V
= 1V
= 0V
= V
CC
= 5mA
= 0.1V, I
= 0.3V, I
= 0.5V, I
denotes specifications which apply over the full operating
= 7V
= DRV
CC
CC
TRACK
CC
EXTPLL
EXTPLL
INTPLL
INTPLL
CC
TH
TH
TH
Pin
= 0.2V (Note 3)
= 1.2V (Note 3)
= 1.2V (Note 3)
= 1.2V (Note 3)
= 5V, unless otherwise noted.
= 1.8V
= 0.6V
= 1.8V
= 0.6V
●
– 8.5
– 0.5
– 8.5
MIN
124
177
290
490
100
186
186
8.5
0.8
0.8
8.5
1.9
86
90
1
–100
– 1.2
TYP
– 60
– 40
– 80
– 10
– 10
– 20
– 20
144
101
202
100
300
500
233
233
1.4
2.3
3.9
1.5
1.5
3.5
0.2
2.1
1.5
10
10
20
20
58
58
3
2
2
3
LTC3709
– 12.5
– 12.5
–150
MAX
12.5
12.5
166
119
234
110
310
510
4.2
0.4
2.3
–3
±1
80
80
2
4
2
UNITS
3
3709f
mV
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
nA
µA
µA
µA
µA
µA
µs
ns
ns
ns
ns
%
%
Ω
Ω
Ω
Ω
%
%
%
V
V
V
V
V
V
V