LTC1709EG-8 Linear Technology, LTC1709EG-8 Datasheet - Page 2

• 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
LTC1709-8/LTC1709-9
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (V
Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V
Switch Voltage (SW1, 2) ..............................36V to – 5V
SENSE1
SENSE2
EAIN, V
V
VID0–VID4, Voltages ...................................7V to – 0.3V
Boosted Driver Voltage (BOOST-SW) ..........7V to – 0.3V
PLLFLTR, PLLIN, V
I
Peak Output Current <1 s(TGL1,2, BG1,2) ................ 3A
INTV
Operating Ambient Temperature Range
Junction Temperature (Note 3) ............................. 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loop
V
V
I
V
V
V
UVLO
g
g
I
I
V
2
INEAIN
Q
RUN/SS
TH
m
mOL
EAIN
SENSEMAX
LOADREG
REFLNREG
OVL
RUN/SS
(Note 2) ................................................ – 40 C to 85 C
BIAS
Voltage ................................................2.7V to – 0.3V
CC
, ATTENIN, ATTENOUT, PGOOD,
OS
RMS Output Current ................................ 50mA
+
–
, SENSE2
+
Voltages ........................ (1.1)INTV
PARAMETER
Regulated Feedback Voltage
Maximum Current Sense Threshold
Feedback Current
Output Voltage Load Regulation
Reference Voltage Line Regulation
Output Overvoltage Threshold
Undervoltage Lockout
Transconductance Amplifier g
Transconductance Amplifier Gain
Input DC Supply Current
Soft-Start Charge Current
RUN/SS Pin ON Arming
, V
Normal Mode
Shutdown
OS
–
, EXTV
W
+
DIFFOUT
, SENSE1
CC
IN
).........................36V to – 0.3V
, INTV
W W
Voltages .... INTV
–
,
CC
m
, RUN/SS,
CONDITIONS
I
V
(Note 4)
(Note 4)
Measured in Servo Loop, I
Measured in Servo Loop, I
V
Measured at V
V
I
I
(Note 5)
EXTV
V
V
V
TH
TH
TH
SENSE
IN
IN
RUN/SS
RUN/SS
RUN/SS
U
CC
CC
Voltage = 1.2V (Note 4)
= 1.2V, Sink/Source 5 A (Note 4)
= 1.2V, (g
= 3.6V to 30V (Note 4)
Ramping Down
A
CC
= 25 C. V
to – 0.3V
to – 0.3V
–
Tied to V
= 0V
= 1.9V
= 5V
Rising
The
m
EAIN
xZ
IN
OUT
L
; No Ext Load) (Note 4)
denotes the specifications which apply over the full operating
= 15V, V
, V
OUT
PACKAGE/ORDER I FOR ATIO
Consult factory for Industrial and Military grade parts.
ATTENOUT
RUNN/SS
SENSE1
SENSE2
SENSE1
SENSE2
= 5V
PLLFLTR
V
ATTENIN
TH
TH
DIFFOUT
BIAS
PLLIN
SGND
V
V
Voltage: 1.2V to 0.7V
Voltage: 1.2V to 2V
EAIN
VID0
VID1
OS
OS
NC
I
TH
–
+
+
–
–
+
= 5V, V
T
JMAX
36-LEAD PLASTIC SSOP
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
= 125 C,
G PACKAGE
TOP VIEW
RUN/SS
JA
= 90 C/W
= 5V unless otherwise noted.
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
NC
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
PGOOD
V
VID4
VID3
VID2
IN
BIAS
0.792
– 0.5
0.84
MIN
1.0
62
CC
CC
3
U
0.800
0.002
– 0.1
0.86
–1.2
TYP
470
3.5
1.5
1.5
– 5
75
20
0.1
3
ORDER PART
LTC1709EG-8
LTC1709EG-9
NUMBER
W
0.808
MAX
– 0.5
0.02
0.88
– 50
1.9
88
40
0.5
4
UNITS
mmho
V/mV
U
%/V
mV
nA
%
%
V
V
V
A
A
A
V