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LTC3872 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC3872
Description  No RSENSE Current Mode Boost DC/DC Controller
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3872 Datasheet(HTML) 2 Page - Linear Technology

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


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