LTC1473L_15 Datasheet, PDF (6/16 Pages) Linear Technology – Dual Low Voltage PowerPath Switch Driver

LTC1473L
PI FU CTIO S
GB1, GA1 (Pins 14, 16): Switch Gate Drivers. GA1 and GB1
drive the gates of the first back-to-back external N-channel
switches.
SAB1 (Pin 15): Source Return. The SAB1 pin is connected
to the sources of SW A1 and SW B1. A small pull-down
current source returns this node to 0V when the switches
are turned off.
W
FU CTIO AL DIAGRA
IN1 1
IN2 2
DIODE 3
V+
6µA
TIMER 4
TO
GATE
DRIVERS
V⁺ 5
V_GG 6
SW 7
GND 8
V_GG
SWITCHING
REGULATOR
INRUSH
CURRENT
SENSE
+
900k
–
1.16V
SW A1/B1
GATE
DRIVERS
SW A2/B2
GATE
DRIVERS
R
LATCH
S
16 GA1
15 SAB1
14 GB1
13 SENSE⁺
12 SENSE^–
11 GA2
10 SAB2
9 GB2
1473 FD
6