ltc1473l Linear Technology Corporation, ltc1473l Datasheet - Page 6

• Manufacturer Part Number: ltc1473l
• Description: Dual Low Voltage Powerpath Switch Driver
• Manufacturer: Linear Technology Corporation

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.
FU CTIO AL DIAGRA
6
U
U
U
TIMER
DIODE
GND
V
IN1
IN2
SW
U
V
GG
+
1
2
3
4
5
6
7
8
DRIVERS
GATE
U
TO
6 A
V +
W
REGULATOR
SWITCHING
V
GG
900k
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.
1.16V
CURRENT
INRUSH
SENSE
+
–
S
R
SW A1/B1
SW A2/B2
DRIVERS
DRIVERS
LATCH
GATE
GATE
1473 FD
16
15
14
13
12
11
10
9
SAB1
GB1
SENSE
GA2
SAB2
GB2
GA1
SENSE
+
–