LTC4416IMS#TRPBF Linear Technology, LTC4416IMS#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC4416IMS#TRPBF
• Description: IC CNTRLR POWERPATH 10-MSOP
• Manufacturer: Linear Technology
• Series: PowerPath™r

Specifications of LTC4416IMS#TRPBF

• Applications: Battery Backup, Industrial/Automotive, High Current Switch
• Fet Type: P-Channel
• Number Of Outputs: 2
• Internal Switch(s): No
• Delay Time - On: 60µs
• Delay Time - Off: 30µs
• Voltage - Supply: 3.6 V ~ 36 V
• Current - Supply: 130µA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

OPERATIO
The band-gap reference provides internal bias currents
used by the channel 1 and channel 2 controllers. It also
provides a precision voltage reference, V
parators C1 and C2. The band-gap reference is powered
as long as a minimum operational voltage is present on
either V1, V2, or V
The C1 and C2 comparators provide a fixed comparison
between the E1 and E2 inputs, respectively, and the in-
ternal V
represented by the H1 and H2 open-drain outputs. The
output states of H1 and H2 are not dependent upon
the relative voltage difference between V
V
open-drain output will be low impedance to GND. If V
is less than V
impedance to GND.
The A1 and A2 circuits act both as a high side
transconductance amplifiers and as comparators. Both
A1 and A2 act identically when the analog controllers
are fully enabled. The relationship of the G1 current is
represented by Figure 1.
When V
off condition and the I
V
I
G1
V2
V1
current is fixed at I
– V
– V
I
G(OFF)
VS
V1
VS
REF
, respectively. If V
– V
< V
V
signal. The comparator outputs are directly
RTO
VS
FR
REF
, the A1 acts as a class A output and the
I
< V
G(SRC)
, the H2 open-drain output will be low
Figure 1. I
U
S
RTO
.
I
G1
G1
, the A1 activates the reverse turn-
G(SRC)
current is I
G1
V
NOT DRAWN TO SCALE
FR
I
E1
G(SNK)
vs V
. As the V
is less than V
V1
– V
V
FON
G(OFF)
I
GFON(SNK)
VS
REF
V1
. When V
, used by com-
V1
– V
REF
– V
VS
V
4416 F01
V1
, the H1
voltage
VS
– V
RTO
VS
and
E2
<
approaches the forward regulation voltage, V
current will be proportional to V
> V
the I
LTC4416 OPERATION
The interaction of the LTC4416 analog controllers distin-
guish the operation of the LTC4416 from a simple circuit
using two PowerPath controllers. Table 1 explains the
different operation modes of the analog controllers.
Table 1. LTC4416 Operational Modes
The LTC4416 has six modes of operation. Each mode of
operation is dependent upon the configuration of the E1
and E2 input pins.
Load Sharing Operation
The load sharing mode configures the LTC4416 into two
independent PowerPath controllers. This is accomplished
by fully enabling both the first analog controller and the
second analog controller. Both channels will implement
the gate drive outlined in Figure 1.
V1 is Less Than V2 Operation
Channel 1 is fully enabled. If V
will implement all of the I
When V
“soft-off mode”. This means that G2 will only provide an
I
current.
When V
enabled, and G2 will become active implementing the I
output current listed in Figure 1.
G(SRC)
Sense
E1
1
1
0
X
0
FON
G1
, the A1 activates the fast-on condition, t
current is set to I
current instead of either an I
E2
E2
Sense V1 is Less Than V2
E2
X
0
0
1
1
is below the V
is above the V
Operation Mode
Load Sharing
V1 is Greater Than V2
Channel 1 Disabled.
Do Not Use
Channel 2 Disabled.
Do Not Use
Both Channels Disabled
LTC4416/LTC4416-1
GFON(SNK)
REF
REF
G1
currents listed in Figure 1.
threshold, channel 2 is fully
threshold, channel 2 is in a
V1
V1
– V
– V
.
VS
G(SRC)
VS
Disabled
Disabled
I
Enabled
Enabled
< V
G(OFF)1
. When V
RTO
FR
or an I
, the I
, channel 1
G(ON)
Disabled
Disabled
V1
Enabled
Enabled
I
G(OFF)2
G(SNK)
G(OFF)
– V
, and
4416fa

VS
G