LTC2906_15 Datasheet, PDF (13/16 Pages) Linear Technology – Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input

TYPICAL APPLICATIO S
LTC2906/LTC2907
2.5V, 1V Monitor, 10% Tolerance with LED Undervoltage Indicator
and 5V High Availability Auxiliary Supply (5V Not Monitored)
1V
86.6k
2.5V
V1
V_ADJ
0.1µF
LTC2907
100k
V_CC
TMR
5V
499Ω
RST
0.1µF
LED
22nF
TOL
S1
GND
0.1µF
2907 TA04
Dual Supply Monitor with Hysteresis, 5% Tolerance
(Supplies Rising), 10% Tolerance (After RST Goes Low)
3.3V
511k
100k
SYSTEM
RESET
V_ADJ
V1
LTC2906
V_CC
GND
S1
RST
RST
TOL
5V
0.1µF
10k
2906 TA05
3.3V
R_ONB
154k
R_ONA
100k
R_TB1
R_TA1 ^RTB2
R_TA2
Dual Supply Monitor for Tracked/Sequenced Supply
0.1µF
C_GATE
10nF
V_CC GATE
ON
IN
RAMP
DC/DC
2.5V
FB1
FB
OUT
LTC2923
RAMPBUF
R_FA1 ^RFB1
TRACK1
TRACK2
GND
IN
DC/DC
1.8V
FB2
FB
OUT
237k
R_FB2
R_FA2
100k
SYSTEM
0.1µF
V_CC
V1
LTC2907
TOL
RST
V_ADJ
TMR
S1
GND
22nF
292067 TA06
29067f
13