Datasheet

2
LTC4440
4440f
Supply Voltage
V
CC
....................................................... –0.3V to 15V
BOOST – TS ......................................... –0.3V to 15V
INP Voltage............................................... –0.3V to 15V
BOOST Voltage (Continuous) ................... –0.3V to 95V
BOOST Voltage (100ms) ........................ –0.3V to 115V
TS Voltage (Continuous) ............................. –5V to 80V
TS Voltage (100ms)................................... –5V to 100V
ORDER PART
NUMBER
LTC4440EMS8E
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 4)
EXPOSED PAD IS GND (PIN 9)
MUST BE SOLDERED TO PCB
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
(Note 1)
Peak Output Current < 1µs (TG) ............................... 4A
Driver Output TG (with Respect to TS) ..... –0.3V to 15V
Operating Ambient Temperature Range
(Note 2) .............................................. –40°C to 85°C
Junction Temperature (Note 3)............................ 125°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
MS8E
PART MARKING
LTF9
1
2
3
4
INP
GND
V
CC
GND
8
7
6
5
TS
TG
BOOST
NC
TOP VIEW
9
MS8E PACKAGE
8-LEAD PLASTIC MSOP
ORDER PART
NUMBER
LTC4440ES6
S6
PART MARKING
LTZY
V
CC
1
GND 2
INP 3
6 BOOST
5 TG
4 TS
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
T
JMAX
= 125°C, θ
JA
= 230°C/W
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= V
BOOST
= 12V, V
TS
= GND = 0V, unless otherwise noted.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Supply (V
CC
)
I
VCC
DC Supply Current
Normal Operation INP = 0V 250 400 µA
UVLO V
CC
< UVLO Threshold (Falling) – 0.1V 25 80 µA
UVLO Undervoltage Lockout Threshold V
CC
Rising ● 5.7 6.5 7.3 V
V
CC
Falling ● 5.4 6.2 7.0 V
Hysteresis 300 mV
Bootstrapped Supply (BOOST – TS)
I
BOOST
DC Supply Current
Normal Operation INP = 0V 110 180 µA
UVLO V
BOOST
– V
TS
< UVLO
HS(FALLING)
– 0.1V, V
CC
= INP = 5V 86 170 µA
UVLO
HS
Undervoltage Lockout Threshold V
BOOST
– V
TS
Rising ● 6.75 7.4 7.95 V
V
BOOST
– V
TS
Falling ● 6.25 6.9 7.60 V
Hysteresis 500 mV
Input Signal (INP)
V
IH
High Input Threshold INP Ramping High ● 1.3 1.6 2 V
V
IL
Low Input Threshold INP Ramping Low ● 0.85 1.25 1.6 V
V
IH
– V
IL
Input Voltage Hysteresis 0.350 V
I
INP
Input Pin Bias Current ±0.01 ±2 µA
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