LTC1709EG-8 Linear Technology, LTC1709EG-8 Datasheet - Page 3

• Manufacturer Part Number: LTC1709EG-8
• Description: IC REG SW 2PH SYNC STPDWN 36SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1709EG-8

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 1.3 ~ 3.5 V
• Current - Output: 3A
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Frequency - Switching: -

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
I
I
I
DF
TG1, 2 t
TG1, 2 t
BG1, 2 t
BG1, 2 t
TG/BG t
BG/TG t
t
Internal V
V
V
V
V
V
VID Parameters
V
R
ATTEN
R
VID
VID
VID
Oscillator and Phase-Locked Loop
f
f
f
R
I
R
SCL
SDLHO
SENSE
ON(MIN)
NOM
LOW
HIGH
PLLFLTR
RUN/SSLO
INTVCC
LDO
LDO
EXTVCC
LDOHYS
BIAS
ATTEN
PULLUP
PLLIN
RELPHS
MAX
THLOW
THHIGH
LEAK
INT
EXT
ERR
1D
2D
r
f
r
f
CC
Regulator
PARAMETER
RUN/SS Pin Latchoff Arming
RUN/SS Discharge Current
Shutdown Latch Disable Current
Total Sense Pins Source Current
Maximum Duty Factor
Top Gate Transition Time:
Rise Time
Fall Time
Bottom Gate Transition Time:
Rise Time
Fall Time
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time
Minimum On-Time
Internal V
INTV
EXTV
EXTV
EXTV
Operating Supply Voltage Range
Resistance Between ATTENIN
and ATTENOUT Pins
Resistive Divider Error
VID0–VID4 Pull-Up Resistance
VID0–VID4 Logic Threshold Low
VID0–VID4 Logic Threshold High
VID0–VID4 Leakage
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Controller 2-Controller 1 Phase
Sinking Capability
Sourcing Capability
CC
CC
CC
CC
Load Regulation
Voltage Drop
Switchover Voltage
Switchover Hysteresis
CC
Voltage
CONDITIONS
V
Soft Short Condition V
V
Each Channel: V
In Dropout
(Note 6)
C
C
(Note 6)
C
C
C
C
Tested with a Square Wave (Note 7)
6V < V
I
I
I
I
LTC1709-8
LTC1709-9
LTC1709-8: VID4 = 0; LTC1709-9
LTC1709-8: VID4 = 1
(Note 8)
V
V
V
V
f
f
CC
CC
CC
CC
PLLIN
PLLIN
RUN/SS
EAIN
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
BIAS
PLLFLTR
PLLFLTR
PLLFLTR
= 0 to 20mA, V
= 20mA, V
= 20mA, EXTV
= 20mA, EXTV
A
= 0.5V
< VID0–VID4 < 7V
< f
> f
= 25 C. V
= 3300pF
= 3300pF
= 3300pF
= 3300pF
= 3300pF Each Driver (Note 6)
= 3300pF Each Driver (Note 6)
IN
Rising from 3V
OSC
OSC
< 30V, V
= 1.2V
= 0V
2.4V
The
EXTVCC
SENSE1
IN
EXTVCC
CC
CC
EXTVCC
denotes the specifications which apply over the full operating
= 15V, V
Ramping Positive
Ramping Negative
= 5V
EAIN
–
, 2
= 4V
= 4V
– = V
= 0.5V, V
BIAS
SENSE1
= 5V, V
RUN/SS
+
, 2
+ = 0V
RUN/SS
= 4.5V
LTC1709-8/LTC1709-9
= 5V unless otherwise noted.
– 0.25
–0.35
MIN
– 85
190
120
280
0.5
4.8
4.5
2.7
1.6
98
99.5
TYP
– 60
– 15
180
220
140
320
180
4.1
1.6
5.0
0.2
4.7
0.2
0.1
30
40
30
20
90
90
80
20
10
40
50
2
15
MAX
0.25
0.25
160
250
160
360
4.5
5.2
1.0
5.5
0.4
90
90
90
90
4
5
1
UNITS
3
Deg
kHz
kHz
kHz
mV
k
k
k
k
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
V
A
A
A
V
V
V
V
V
V
A
A
A