Datasheet

LTC4228-1/LTC4228-2
8
422812f
block DiagraM
+
–
+
–
A1
+
–
GA1
HGATE1
IN1
CPO1
DGATE1
OUT1
ON1
HGATE2
IN2
CPO2
DGATE2
OUT2
65mV 50mV 65mV50mV
SENSE1
+
SENSE1
–
ECB1
SENSE2
–
SENSE2
+
10µA
+
–
+
–
25mV
HGATE1 ON
1.235V
0.6V
1.235V
0.6V
10µA
INTV
CC
10µA
INTV
CC
CP1
25mV
2.2V
+
–
100µA
INTV
CC
12V
INTV
CC
10µA
100µA
+
–
A2
+
–
INTV
CC
INTV
CC
UV3
+
–
+
–
+
–
CHARGE
PUMP 1
f = 2MHz
GATE
DRIVER 1
GATE
DRIVER 2
CHARGE
PUMP 2
f = 2MHz
5V LDO
GA2
+
–
100µA
INTV
CC
2µA
+
–
SENSE1
+
1.9V
UV1
+
–
FAULT1 RESET
CP2
CP5
+
–
1.235V
0.2V
CP7
+
–
CP8
100µA
2µA
1.235V
0.2V
CP9
CP10
+
–
1.235V
CARD1 PRESENCE DETECT
HGATE2 ON
FAULT2 RESET
LOGIC
CARD2 PRESENCE DETECT
+
–
TMR1
*UFD PACKAGE ONLY
EN1
ON2
CP6
CP3
CP4
TMR2
422812 BD
EN2
INTV
CC
+
–
+
–
+
–
+
–
1.235V
+
–
SENSE2
+
1.9V
UV2
+
–
+
–
ECB2
10µA
INTV
CC
10µA
INTV
CC
GND
STATUS1
FAULT1
PWRGD1
EXPOSED PAD*
STATUS2
FAULT2
PWRGD2
INTV
CC
INTV
CC
10µA10µA
12V
12V
12V
10µA
INTV
CC
INTV
CC
10µA
DGATE2
IN2
0.7V
STAT2
+
–
+
–
4.2V
PG2
+
–
HGATE2
+
–
0.7V
DGATE1
IN1
STAT1
+
–
+–
HGATE1
PG1
4.2V
+
–
+–