LTC1709EG-7 Linear Technology, LTC1709EG-7 Datasheet - Page 3

• Manufacturer Part Number: LTC1709EG-7
• Description: IC SW REG STEP-DOWN SYNC 36-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1709EG-7

• 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
I
I
V
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
Q
RUN/SS
SCL
SDLHO
SENSE
ON(MIN)
NOM
LOW
HIGH
PLLFLTR
RUN/SS
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
Input DC Supply Current
Soft-Start Charge Current
RUN/SS Pin ON Arming
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 to VID4 Pull-Up Resistance
VID0 to VID4 Logic Threshold Low
VID0 to VID4 Logic Threshold High
VID0 to VID4 Leakage
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Controller 2-Controller 1 Phase
Normal Mode
Shutdown
Sinking Capability
Sourcing Capability
CC
CC
CC
CC
Load Regulation
Voltage Drop
Switchover Voltage
Switchover Hysteresis
CC
Voltage
CONDITIONS
(Note 5)
EXTV
V
V
V
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
(Note 8)
V
V
V
V
f
f
CC
CC
CC
CC
PLLIN
PLLIN
RUN/SS
RUN/SS
RUN/SS
RUN/SS
EAIN
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
BIAS
PLLFLTR
PLLFLTR
PLLFLTR
= 0 to 20mA, V
= 20mA, V
= 20mA, EXTV
= 20mA, EXTV
A
CC
= 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
Tied to V
= 0V
= 1.9V
Rising
Rising from 3V
OSC
OSC
< 30V, V
= 1.2V
= 0V
2.4V
The
EXTVCC
SENSE1
IN
OUT
EXTVCC
CC
CC
EXTVCC
denotes the specifications which apply over the full operating
= 15V, V
, V
Ramping Positive
Ramping Negative
= 5V
EAIN
–
OUT
, 2
= 4V
= 4V
– = V
= 0.5V, V
= 5V
BIAS
SENSE1
= 5V, V
RUN/SS
+
, 2
+ = 0V
RUN/SS
= 4.5V
= 5V unless otherwise noted.
– 0.25
– 0.5
MIN
– 85
190
120
280
1.0
0.5
4.8
4.5
2.7
1.6
98
–1.2
99.5
TYP
– 60
– 15
470
180
220
140
310
180
1.5
4.1
1.6
5.0
0.2
4.7
0.2
30
40
30
20
90
90
20
80
10
40
50
2
15
LTC1709-7
– 0.25
MAX
160
250
160
360
1.9
4.5
5.2
1.0
5.5
0.4
40
90
90
90
90
4
5
1
UNITS
3
Deg
kHz
kHz
kHz
mV
k
k
k
ns
ns
ns
ns
ns
ns
ns
%
%
%
A
A
A
V
V
A
A
A
V
V
V
V
V
V
A
A
A