Datasheet
LTC4267
2
4267fc
V
PORTN
with Respect to V
PORTP
Voltage ...0.3V to –100V
P
OUT
, SIGDISA,
⎯
P
⎯
W
⎯
R
⎯
G
⎯
D
Voltage ..................... V
PORTN
+ 100V to V
PORTN
–0.3V
P
VCC
to PGND Voltage (Note 2)
Low Impedance Source ........................... –0.3V to 8V
Current Fed .......................................... 5mA into P
VCC
R
CLASS
Voltage .................V
PORTN
+ 7V to V
PORTN
– 0.3V
⎯
P
⎯
W
⎯
R
⎯
G
⎯
D Current .....................................................10mA
R
CLASS
Current .....................................................100mA
NGATE to PGND Voltage ...........................–0.3V to P
VCC
V
FB
, I
TH
/RUN to PGND Voltages ................–0.3V to 3.5V
ORDER PART
NUMBER
DFN PART*
MARKING
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grades are identifi ed by a label on the shipping container.
4267
4267
LTC4267CDHC
LTC4267IDHC
(Note 1)
The
● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
PORTN
Supply Voltage Voltage with Respect to V
PORTP
Pin
Maximum Operating Voltage (Notes 4, 5, 6)
● –57 V
Signature Range
● –1.5 –9.5 V
Classifi cation Range
● –12.5 –21 V
UVLO Turn-On Voltage
● –34.8 –36.0 –37.2 V
UVLO Turn-Off Voltage
● –29.3 –30.5 –31.5 V
V
TURNON
P
VCC
Turn-On Voltage Voltage with Respect to PGND ● 7.8 8.7 9.2 V
V
TURNOFF
P
VCC
Turn-Off Voltage Voltage with Respect to PGND ● 4.6 5.7 6.8 V
V
HYST
P
VCC
Hysteresis V
TURNON
– V
TURNOFF
● 1.5 3.0 V
V
CLAMP1mA
P
VCC
Shunt Regulator Voltage I
PVCC
= 1mA, V
ITH
/RUN = 0V, Voltage ● 8.3 9.4 10.3 V
with Respect to PGND
SENSE to PGND Voltage .............................. –0.3V to 1V
NGATE Peak Output Current (<10μs) ..........................1A
Operating Ambient Temperature Range
LTC4267C ................................................ 0°C to 70°C
LTC4267I .............................................–40°C to 85°C
Junction Temperature
GN Package ...................................................... 150°C
DHC Package .................................................... 125°C
Storage Temperature Range ...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
ORDER PART
NUMBER
GN PART
MARKING
4267
4267I
LTC4267CGN
LTC4267IGN
T
JMAX
= 125°C, θ
JA
= 43.5°C/W
EXPOSED PAD (PIN 17) MUST BE SOLDERED
TO ELECTRICALLY ISOLATED PCB HEAT SINK
T
JMAX
= 150°C, θ
JA
= 90°C/W
16
15
14
13
12
11
10
9
17
1
2
3
4
5
6
7
8
TOP VIEW
DHC16 PACKAGE
16-LEAD (3mm × 5mm) PLASTIC DFN
I
TH
/RUN
PGND
NGATE
P
VCC
R
CLASS
NC
V
PORTN
NC
V
FB
PGND
SENSE
V
PORTP
SIGDIS
A
PWRGD
P
OUT
NC
TOP VIEW
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PGND
I
TH
/RUN
NGATE
P
VCC
R
CLASS
NC
V
PORTN
PGND
PGND
V
FB
SENSE
V
PORTP
SIGDISA
PWRGD
P
OUT
PGND
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/
ABSOLUTE AXI U RATI GS
W
WW
U
FOR ATIOPACKAGE/ORDER I
UUW
ELECTRICAL CHARACTERISTICS