LTC2923 Datasheet, PDF (6/20 Pages) Linear Technology – Power Supply Tracking Controller

LTC2923
W
FU CTIO AL BLOCK DIAGRA
1
V_CC
ON
2
+
1.2V
–
–
0.4V
+
SHORT-CIRCUIT
FAULT LATCH
RQ
SQ
CHARGE
PUMP
10µA
ONSIG
GATE
11 (9)
10µA
STATUS
10
SDO
9
RAMPBUF
5
1×
ONSIG
GATE > RAMP + 4.9V
4.9V
GATE
RAMP > V_CC
V_CC
V_CC – RAMP > 200mV
RAMP
12 (10)
0.2V
V_CC
RAMP < 100mV
0.1V
V_CC < 2.6V
V_CC
2.6V
V_CC
TRACK1
3
0.8V
V_CC
FB1
8
6
TRACK2
4
PIN NUMBERS IN PARENTHESES CORRESPOND
TO THE 10-LEAD MSOP PACKAGE
0.8V
GND
6
FB2
7
2923 FBD
2923fa