LTC2922 Linear Technology, LTC2922 Datasheet - Page 7

• Manufacturer Part Number: LTC2922
• Description: Power Supply Tracker
• Manufacturer: Linear Technology

FUNCTIONAL DIAGRA
U
SENSE
U
V
GENERATOR
REFERENCE
V1
V2
V3
V4
CC
CHARGE
PUMP
GND
AND
+
–
0.7V
0.5V
APPROXIMATELY 1V
V
AT V
V
1.2V
0.7V
0.5V
PUMP
SWON
CC
50mV
+ –
=5V
11.1V
(LTC2922 ONLY)
(LTC2922 ONLY)
+
–
+
–
+
–
+
–
+
–
OVERCURRENT
–
+
–
+
–
+
–
+
–
+
W
–
+
Figure 1. LTC2921 and LTC2922 Functional Diagram
MONITOR
MONITOR
MONITOR
MONITOR
MONITOR
D0
S0
UNDERVOLTAGE
OVERVOLTAGE
OVERVOLTAGE
OVERVOLTAGE
OVERVOLTAGE
OVERVOLTAGE
LATCH
V
D1
S1
CONTROL
LOGIC
D2
S2
P
ENABLE
REMOTE
SENSE
SWITCH
ENABLE
GATE
ENABLE
TIMER
ENABLE
CIRCUIT
BREAKER
RESET PULSE
TIMER ENABLE
G
D3
S3
(LTC2922 ONLY)
(LTC2922 ONLY)
LTC2921/LTC2922 Series
D4
S4
V
2 A
CC
SWITCHES ON
V
10 A
PUMP
V
CC
V
1.2V
PUMP
V
+
+
SWON
REMOTE
SWITCH
SENSE
GATE
+
+
PULSE
TIMER
TIMER
DONE
DONE
4 A
V
V
GATE
SWON
PUMP
ON
2921/22 F01
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TIMER
GATE
PG
29212fa
7