Datasheet
LTC4228-1/LTC4228-2
2
422812f
absoluTe MaxiMuM raTings
Supply Voltages
IN1, IN2 .................................................. –0.3V to 24V
INTV
CC
..................................................... –0.3V to 7V
Input Voltages
ON1, ON2, EN1, EN2............................... –0.3V to 24V
TMR1, TMR2 .........................–0.3V to INTV
CC
+ 0.3V
SENSE1
+
, SENSE2
+
................................ –0.3V to 24V
SENSE1
–
, SENSE2
–
................................ –0.3V to 24V
Output Voltages
FA U LT1, FAU LT2 , PWRGD1, PWRGD2 ..... –0.3V to 24V
STATUS1, STATUS2 ................................ –0.3V to 24V
CPO1, CPO2 (Note 3) ............................. –0.3V to 35V
DGATE1, DGATE2 (Note 3) ..................... –0.3V to 35V
(Notes 1, 2)
9 10
TOP VIEW
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
11 12 13
28
29
27 26 25 24
14
23
6
5
4
3
2
1
SENSE1
–
SENSE1
+
IN1
INTV
CC
GND
IN2
SENSE2
+
SENSE2
–
FAULT1
ON1
EN1
TMR1
TMR2
EN2
ON2
FAULT2
DGATE1
CPO1
STATUS1
HGATE1
OUT1
PWRGD1
DGATE2
CPO2
STATUS2
HGATE2
OUT2
PWRGD2
7
17
18
19
20
21
22
16
8
15
T
JMAX
= 125°C, θ
JA
= 43°C/W (NOTE 5)
EXPOSED PAD (PIN 29) PCB GND CONNECTION OPTIONAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
GN PACKAGE
28-LEAD PLASTIC SSOP NARROW
28
27
26
25
24
23
22
21
20
19
18
17
16
15
STATUS1
CPO1
DGATE1
SENSE1
–
SENSE1
+
IN1
INTV
CC
GND
IN2
SENSE2
+
SENSE2
–
DGATE2
CPO2
STATUS2
HGATE1
OUT1
PWRGD1
FAULT1
ON1
EN1
TMR1
TMR2
EN2
ON2
FAULT2
PWRGD2
OUT2
HGATE2
T
JMAX
= 125°C, θ
JA
= 80°C/W
pin conFiguraTion
HGATE1, HGATE2 (Note 4) ..................... –0.3V to 35V
OUT1, OUT2 ........................................... –0.3V to 24V
Average Currents
FA U LT1, FAU LT2 , PWRGD1, PWRGD2 ................... 5mA
STATUS1, STATUS2 ..............................................5mA
INTV
CC
................................................................. 1mA
Operating Temperature Range
LTC4228C ................................................ 0°C to 70°C
LTC4228I .............................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
GN Package ...................................................... 300°C