LTC1735IGN#PBF Linear Technology, LTC1735IGN#PBF Datasheet - Page 2

• Manufacturer Part Number: LTC1735IGN#PBF
• Description: IC SW REG STEP-DOWN SYNC 16-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1735IGN#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 6 V
• Current - Output: 3A
• Frequency - Switching: 300kHz
• Voltage - Input: 4 ~ 30 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Number Of Pwm Outputs: 1
• On/off Pin: No
• Adjustable Output: Yes
• Topology: Boost/Buck/Flyback
• Switching Freq: 500KHz
• Duty Cycle: 99.4%
• Operating Supply Voltage (max): 36V
• Output Current: 3000A
• Output Voltage: 0.8 to 6V
• Synchronous Pin: Yes
• Rise Time: 50ns
• Fall Time: 50ns
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: SSOP N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

PACKAGE/ORDER I FOR ATIO
LTC1735
ABSOLUTE AXI U RATI GS
Input Supply Voltage (V
Topside Driver Supply Voltage (BOOST)....42V to – 0.3V
Switch Voltage (SW) ....................................36V to – 5V
EXTV
Boosted Driver Voltage (BOOST – SW) .......7V to – 0.3V
SENSE
FCB Voltage ............................(INTV
I
RUN/SS, PGOOD (LTC1735F Only)
Voltages .......................................................7V to – 0.3V
Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loop
I
V
DF Max
g
V
I
2
VOSENSE
FCB
TH
m
OSENSE
FCB
V
V
LINEREG
LOADREG
, V
V
16-LEAD NARROW
RUN/SS
SENSE
SENSE
OSENSE
PLASTIC SSOP
SGND
GN PACKAGE
CC
C
OSENSE
FCB
OSC
T
T
I
+
TH
JMAX
JMAX
–
+
, SENSE
Voltage ...........................................7V to – 0.3V
1
2
3
4
5
6
7
8
= 125 C,
= 125 C,
Voltages ...............................2.7V to – 0.3V
PARAMETER
Feedback Current
Feedback Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Factor
Transconductance Amplifier g
Forced Continuous Threshold
Forced Continuous Current
TOP VIEW
–
JA
JA
16-LEAD PLASTIC SO
W
Voltages .......... 1.1 (INTV
= 130 C/W (GN)
= 110 C/W (S)
S PACKAGE
16
15
14
13
12
11
10
9
IN
TG
BOOST
SW
V
INTV
BG
PGND
EXTV
).........................36V to – 0.3V
IN
W W
CC
CC
U
m
GN PART MARKING
CC
ORDER PART
+ 0.3V) to – 0.3V
LTC1735CGN
LTC1735CS
LTC1735IGN
LTC1735IS
LTC1735EGN
W
NUMBER
1735
1735I
1735E
CC
U
A
CONDITIONS
(Note 3)
(Note 3)
V
(Note 3)
Measured in Servo Loop; V
Measured in Servo Loop; V
In Dropout
V
) to – 0.3V
IN
FCB
= 25 C. V
= 3.6V to 30V (Note 3)
= 0.85V
The
U
(Note 1)
IN
denotes specifications which apply over the full operating
= 15V, V
Peak Driver Output Current <10 s (TG, BG) .............. 3A
INTV
Operating Ambient Temperature Range
Junction Temperature (Note 2) ............................. 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
V
RUN/SS
SENSE
SENSE
PGOOD
OSENSE
LTC1735C ............................................... 0 C to 85 C
LTC1735I/LTC1735E (Note 8) ............ – 40 C to 85 C
SGND
C
FCB
OSC
RUN/SS
NC
I
TH
CC
–
+
ITH
ITH
T
20-LEAD PLASTIC TSSOP
JMAX
10
Output Current ......................................... 50mA
1
2
3
4
5
6
7
8
9
= 0.7V
= 2V
= 5V unless otherwise noted.
= 125 C,
F PACKAGE
TOP VIEW
JA
= 110 C/W
20
19
18
17
16
15
14
13
12
11
NC
TG
BOOST
SW
V
INTV
BG
PGND
EXTV
NC
IN
CC
CC
0.792
0.76
MIN
98
– 0.17
0.001
– 0.1
99.4
TYP
0.8
1.3
0.8
– 4
0.1
ORDER PART
LTC1735CF
LTC1735IF
NUMBER
0.808
MAX
0.02
– 0.3
0.84
– 0.3
– 25
0.3
UNITS
mmho
1735fc
%/V
nA
%
%
%
V
V
A