ltc3873 Linear Technology Corporation, ltc3873 Datasheet - Page 2

• Manufacturer Part Number: ltc3873
• Description: No Rsense Constant Frequency Current Mode Boost/flyback/sepic Dc/dc Controller
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
LTC3873
V
RUN/SS ........................................................ –0.3V to 9V
IPRG Voltage .................................–0.3V to (V
V
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
temperature range, otherwise specifi cations are at T
PACKAGE/ORDER INFORMATION
PARAMETER
Input DC Supply Current
Undervoltage Lockout Threshold
Shutdown Threshold (at RUN/SS)
Regulated Feedback Voltage
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
V
2
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
FB
CC
FB
Normal Operation
Shutdown
UVLO
Low Impedance Source ........................... –0.3V to 9V
Current Fed ..........................................25mA Into V
ORDER PART NUMBER
Input Current
, I
to GND
TH
LTC3873ETS8
Voltages ....................................... –0.3V to 2.4V
IPRG 1
GND 4
http://www.linear.com/leadfree/
V
I
TH
T
FB
JMAX
8-LEAD PLASTIC TSOT-23
2
3
= 125°C, θ
TS8 PACKAGE
TOP VIEW
JA
= 230°C/W
TS8 PART MARKING
8 SW
7 RUN/SS
6 V
5 NGATE
CC
LTCSN
CONDITIONS
Typicals
V
V
V
V
V
(Note 5)
5.6V < V
V
V
(Note 5)
CC
CC
CC
RUN/SS
RUN/SS
ITH
ITH
V
V
V
ITH
RUN/SS
CC
Rising
Falling
Hysteresis
= 1.6V (Note 5)
= 1V (Note 5)
A
= UVLO Threshold – 100mV, V
= 1.9V
CC
= 25°C. V
CC
Falling
Rising
= 0V
+ 0.3V)
< 9V (Note 5)
The
CC
(Note 1)
●
CC
denotes the specifi cations which apply over the full operating
= 9V unless otherwise noted. (Note 2)
SW Voltage ................................................ –0.3V to 60V
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)
ORDER PART NUMBER
TS8 Package ..................................................... 300°C
LTC3873EDDB
RUN/SS
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
= V
8-LEAD (3mm × 2mm) PLASTIC DFN
CC
IPRG
GND
T
V
I
JMAX
TH
FB
= 125°C, θ
1
2
3
4
●
●
●
●
●
DDB PACKAGE
TOP VIEW
9
1.182
MIN
7.9
3.5
4.0
0.5
0.6
JA
= 76°C/W
8
7
6
5
DDB PART MARKING
NGATE
V
RUN/SS
SW
CC
–0.05
0.12
0.05
TYP
300
8.4
4.0
4.4
0.7
0.8
1.2
55
45
25
LCSK
1.218
MAX
400
100
8.8
4.4
4.8
0.9
1.0
60
50
UNITS
mV/V
3873f
µA
µA
µA
nA
%
%
V
V
V
V
V
V