LTC4413EDD#TRPBF Linear Technology, LTC4413EDD#TRPBF Datasheet - Page 9

• Manufacturer Part Number: LTC4413EDD#TRPBF
• Description: IC IDEAL DIODE DUAL 10-DFN
• Manufacturer: Linear Technology

Specifications of LTC4413EDD#TRPBF

• Applications: Handheld/Mobile Devices
• Fet Type: P-Channel
• Number Of Outputs: 2
• Internal Switch(s): Yes
• Delay Time - On: 11µs
• Delay Time - Off: 2µs
• Voltage - Supply: 2.5 V ~ 5.5 V
• Current - Supply: 25µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

OPERATION
For short durations after the output is shorted, the
current may exceed I
short-circuit current can be large, depending on the load
current immediately before the short circuit occurs. During
overcurrent operation, the power consumption of the
LTC4413 is large, and is likely to cause an overtemperature
condition as the internal die temperature exceeds the
thermal shutdown temperature.
Overtemperature Protection
The overtemperature condition is detected when the
internal die temperature increases beyond 150°C. An
overtemperature condition causes the gate amplifi ers (A
and B) as well as the two P-channel MOSFETs (PA and
PB) to be shut off. When the internal die temperature
cools to below 140°C, the amplifi ers turn on and revert
to normal operation. Note that prolonged operation under
overtemperature conditions degrades reliability.
Channel Selection and Status Output
Two active-high control pins independently turn off the
two ideal diodes contained within the LTC4413, control-
ling the operation mode as described by Table 1. When
the selected channel is reverse biased, or the LTC4413 is
put into low power standby, the status signal indicates
this condition with a low voltage.
APPLICATIONS INFORMATION
Introduction
The LTC4413 is intended for power control applications
that include low loss diode ORing, fully automatic
switchover from a primary to an auxiliary source of power,
microcontroller controlled switchover from a primary to
an auxiliary source of power, load sharing between two or
more batteries, charging of multiple batteries from a single
charger and high side power switching. The LTC4413 is
optimized for low quiescent power consumption at the
expense of transient response. For more demanding slew
MAX
. The magnitude of this peak
Table 1. Mode Control
The function of the STAT pin depends on the mode that
has been selected. The following table describes the STAT
pin output current as a function of the mode selected, as
well as the conduction state of the two diodes.
Table 2. STAT Output Pin Funtion
rate or load transient applications, the pin compatible
LTC4413-1 is recommended.
Dual Battery Load Sharing with Automatic Switchover
to a Wall Adapter
An application circuit for dual battery load sharing with
automatic switchover of load from batteries to a wall adapter
is shown in Figure 3. When the wall adapter is not present,
whichever battery that has the higher voltage provides the
load current until it has discharged to the voltage of the
other battery. The load is then shared between the two
ENB1
High
High
Low
Low
ENB1
High
High
Low
Low
ENB2
High
High
Low
Low
ENB2
High
High
Low
Low
STATE
Diode OR (NB: The Two Outputs Are Not Connected
Internal to the Device)
Diode A = Enabled, Diode B = Disabled
Diode A = Disabled, Diode B = Enabled
All 0ff (Low Power Standby)
CONDITIONS
Diode A Forward Bias,
Diode B Forward Bias
Diode A Forward Bias,
Diode B Reverse Bias
Diode A Reverse Bias,
Diode B Forward Bias
Diode A Reverse Bias,
Diode B Reverse Bias
Diode A Forward Bias,
Diode B Disabled
Diode A Reverse Bias,
Diode B Disabled
Diode A Disabled,
Diode B Forward Bias
Diode A Disabled
Diode B Reverse Bias
Diode A Disabled,
Diode B Disabled
LTC4413
STAT
I
I
I
I
I
I
I
I
I
SNK
SNK
SNK
SNK
SNK
SNK
SNK
SNK
SNK
= 0μA
= 0μA
= 9μA
= 9μA
= 0μA
= 9μA
= 0μA
= 9μA
= 9μA
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