LTC3872 Linear Technology, LTC3872 Datasheet - Page 2

• Manufacturer Part Number: LTC3872
• Description: No RSENSE Current Mode Boost DC/DC Controller
• Manufacturer: Linear Technology

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PACKAGE/ORDER I FOR ATIO
ABSOLUTE AXI U RATI GS
LTC3872
(Note 1)
Input Supply Voltage (V
IPRG Voltage ..................................–0.3V to (V
V
SW Voltage ................................................ –0.3V to 60V
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
2
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
PARAMETER
Input Voltage Range
Input DC Supply Current
Undervoltage Lockout Threshold
Shutdown Threshold (at RUN/SS)
Regulated Feedback Voltage
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
V
RUN/SS Pull Up Current
FB
FB
Normal Operation
Shutdown
UVLO
ORDER PART NUMBER
, I
Input Current
TH
Voltages ....................................... –0.3V to 2.4V
LTC3872ETS8
IPRG 1
GND 4
W
V
I
http://www.linear.com/leadfree/
TH
FB
8-LEAD PLASTIC TSOT-23
T
JMAX
2
3
IN
TS8 PACKAGE
= 125°C, θ
TOP VIEW
), RUN/SS .......... –0.3V to 10V
W W
JA
U
= 230°C/W
TS8 PART MARKING
8 SW
7 RUN/SS
6 V
5 NGATE
IN
CONDITIONS
Typicals at V
2.75V ≤ V
V
V
V
V
V
V
(Note 5)
2.75V < V
V
V
(Note 5)
V
LCGB
W
RUN/SS
IN
IN
IN
RUN/SS
RUN/SS
ITH
ITH
RUN/SS
< UVLO Threshold, V
Rising
Falling
U
= 1.6V (Note 5)
= 1V (Note 5)
A
IN
= 25°C. V
= 0V
Falling
Rising
= 0
IN
IN
+ 0.3V)
≤ 9.8V, V
< 9V (Note 5)
IN
The
= 4.2V (Note 4)
U
●
IN
denotes the specifi cations which apply over the full operating
ITH
= 4.2V unless otherwise noted. (Note 2)
= 1.3V
RUN
Operating Temperature Range (Note 2) ... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TS8 Package ......................................................... 300°C
ORDER PART NUMBER
= 0V
LTC3872EDDB
EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB
8-LEAD (3mm × 2mm) PLASTIC DFN
IPRG
GND
T
V
JMAX
I
TH
FB
= 125°C, θ
●
●
●
●
●
1
2
3
4
DDB PACKAGE
TOP VIEW
9
1.182
MIN
2.75
2.05
0.35
2.3
0.6
0.7
JA
= 76°C/W
8
7
6
5
DDB PART MARKING
NGATE
V
RUN/SS
SW
IN
–0.05
2.45
0.85
0.95
0.14
0.05
TYP
250
2.3
1.2
0.7
20
25
8
LCHT
1.218
MAX
2.75
2.55
1.05
1.15
1.25
400
9.8
20
35
50
UNITS
mV/V
3872fa
μA
μA
μA
nA
μA
%
%
V
V
V
V
V