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LTC4416IMS-1#PBF

P1-P3P4-P6P7-P9P10-P12
LTC4416/LTC4416-1
1
4416fa
36V, Low Loss Dual
PowerPath Controllers for
Large PFETs
The LTC
®
4416/LTC4416-1 control two sets of external
P-channel MOSFETs to create two near ideal diode functions
for power switchover circuits. This permits highly efficient
OR’ing of multiple power sources for extended battery life
and low self heating. When conducting, the voltage drop
across the MOSFET is typically 25mV. For applications with
a wall adapter or other auxiliary power source, the load is
automatically disconnected from the battery when the aux-
iliary source is connected.
The LTC4416 integrates two interconnected PowerPath
TM
controllers with soft switchover control. The “soft-off”
switchover permits the users to transfer between two dis-
similar voltages without excessive voltage undershoot (or
V
DROOP
) in the output supply. The LTC4416/LTC4416-1 also
contain a “fast-on” feature that dramatically increases gate
drive current when the forward input voltage exceeds 25mV.
The LTC4416 “fast off” feature is engaged when the sense
voltage exceeds the input voltage by 25mV. The LTC4416-1
enables the fast off under the same conditions and when
the other external P-channel device is selected using the
enable pins.
The wide operating supply range supports operation from one
to eight Li-Ion cells in series. The low quiescent current (35µA
per channel) is independent of the load current. The gate driver
includes an internal voltage clamp for MOSFET protection.
The LTC4416/LTC4416-1 are available in low profile 10-lead
MSOP packages.
■
High Current PowerPath Switch
■
Industrial and Automotive Applications
■
Uninterruptible Power Supplies
■
Logic Controlled Power Switch
■
Battery Backup System
■
Emergency Systems with Battery Backups
■
Designed Specifically to Drive Large and Small Q
G
PFETs
■
Very Low Loss Replacement for Power Supply
OR’ing Diodes
■
Wide Operating Voltage Range: 3.6V to 36V
■
–40°C to 125°C Operating Temperature Range
■
Reverse Battery Protection
■
Automatic Switching Between DC Sources
■
Low Quiescent Current: 35µA per Channel
■
Load Current Sharing
■
MOSFET Gate Protection Clamp
■
Precision Input Control Comparators for Setting
Switchover Threshold Points
■
Open-Drain Feedback Points for Customer Specified
Hysteresis Control
■
Minimal External Components
■
Space Saving 10-Lead MSOP Package
Automatic PowerPath Switchover
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
PowerPath is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
LTC4416
PRIMARY SUPPLY
BACKUP SUPPLYV2 = 10.8V
V1 = 12V (FAIL)
V1 = 13.5V (RESTORE)
SUP75P03_07
SUP75P03_07
E1
GND
E2
H2
H1
V1
G1
V
S
G2
V2
24.9k187k
221k
V1
GND
V2
V
S
4416 TA01
FORWARD VOLTAGE (V)
0.02
0
CURRENT (A)
8.0
3.6
CONSTANT
R
ON
4416 TA01b
0.5
CONSTANT
VOLTAGE
SCHOTTKY
DIODE
LTC4416
LTC4416 vs Schottky Diode
Forward Voltage Drop
LTC4416-1
H1
E1
GND
E2
H2
G1
V1
V
S
V2
G2
182k
24.3k24.9k
GND
V
IN
187k
V
TH1
WITH
HYSTERESIS
V
TH2
WITH
HYSTERESIS
V
OUT
TO
LOAD
4416 TA01c
75k221k
UV ENABLED AT 5V, V
IN
RESTORED TO LOAD WHEN V
IN
RISES TO 5.5V
OV ENABLED AT 13.5V, V
IN
RESTORED TO LOAD WHEN V
IN
FALLS TO 12V
Under and Overvoltage Shutdown Operation
LTC4416/LTC4416-1
2
4416fa
Supply Voltage (V1, V2) .............................. –14V to 40V
Voltage from V1 or V2 to V
S
....................... –40V to 40V
Input Voltage
E1, E2 ....................................................
–0.3V to 40V
V
S
........................................................... –14V to 40V
Output Voltage
G1 .......
–0.3V to the Higher of V1 + 0.3V or V
S
+ 0.3V
G2 .......
–0.3V to the Higher of V2 + 0.3V or V
S
+ 0.3V
H1, H2 .....................................................
–0.3V to 7V
Operating Ambient Temperature Range (Note 2)
LTC4416E ............................................
–40°C to 85°C
LTC4416I ...........................................
–40°C to 125°C
Operating Junction
Temperature Range ................................ –40°C to 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
The
● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V1 = V2 = 12V, E1 = 2V, E2 = GND, GND = 0V. Current into a pin is
positive and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
V1
, V
V2
,
V
VS
Operating Supply Range V1, V2 and/or V
S
Must be in This Range for Proper
Operation
●
3.6 36 V
I
QFL
Quiescent Supply Current at Low Supply
While in Forward Regulation
V
V1
= 3.6V, V
V2
= 3.6V. Measure Combined Current
at V1, V2 and V
S
Pins Averaged with V
VS
= 3.560V
and V
VS
= 3.6V (Note 3)
●
70 µA
I
QFH
Quiescent Supply Current at High Supply
While in Forward Regulation
V
V1
= 36V, V
V2
= 36V. Measure Combined Current
at V1, V2 and V
S
Pins Averaged with V
VS
= 35.960V
and V
VS
= 36V (Note 3)
●
130 µA
I
QRL
Quiescent Supply Current at Low Supply
While in Reverse Turn-Off
V
V1
= 3.6V, V
V2
= 3.6V. Measure Combined Current
at V1, V2 and V
S
Pins with V
VS
= 3.7V
●
70 µA
I
QRH
Quiescent Supply Current at High Supply
While in Reverse Turn-Off
V
V1
= 35.9V, V
V2
= 35.9V. Measure Combined
Current at V1, V2 and V
S
Pins with V
VS
= 36V
●
130 µA
I
QCL
Quiescent Supply Current at Low Supply
with E1 and E2 Active
V
V1
= 3.6V, V
V2
= 3.6V, V
V1
– V
VS
= 0.9V,
V
E1
= 0V, V
E2
= 2V, V1 and V2 Measured Separately
●
30 µA
I
QCH
Quiescent Supply Current at High Supply
with E1 and E2 Active
V
V1
= 36V, V
V2
= 36V, V
V1
– V
VS
= 0.9V,
V
E1
= 0V, V
E2
= 2V, V1 and V2 Measured Separately
●
65 µA
I
LEAK
V1, V2 and V
S
Pin Leakage Currents
When Other Pin Supplies Power (Note 4)
V
V1
= V
V2
= 28V, V
VS
= 0V. Measure I
VS
–10 –1 1 µA
V
V1
= V
V2
= 14V, V
VS
= –14V. Measure I
VS
–10 –1 1 µA
V
V1
= V
V2
= 36V, V
VS
= 8V. Measure I
VS
–10 –1 1 µA
PowerPath Controller
V
FR
PowerPath Switch Forward Regulation
Voltage
V
V1
, V
V2
– V
VS
, 3.6V ≤ V
V1
, V
V2
≤ 36V,
C
G1
= C
G2
= 3nF
●
10 40 mV
V
RTO
PowerPath Switch Reverse Turn-Off
Threshold Voltage
V
V1
, V
V2
– V
VS
, 3.6V ≤ V
V1
, V
V2
≤ 36V,
C
G1
= C
G2
= 3nF
●
–40 –10 mV
V
FO
PowerPath Switch Forward Fast-On
Voltage Comparator Threshold
V
V1
, V
V2
– V
VS
, 6V ≤ V
V1
, V
V2
≤ 36V,
C
G1
= C
G2
= 3nF, I
G1
, I
G2
> 500µA
●
50 125 mV
ELECTRICAL CHARACTERISTICS
ABSOLUTE AXI U RATI GS
W
W W
U
PACKAGE/ORDER I FOR ATIO
U UW
1
2
3
4
5
H1
E1
GND
E2
H2
10
9
8
7
6
G1
V1
V
S
V2
G2
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 130°C, θ
JA
= 120°C/W
ORDER PART NUMBER MS PART MARKING*
LTC4416EMS
LTC4416IMS
LTC4416EMS-1
LTC4416IMS-1
LTCFC
LTCFC
LTCPS
LTCPS
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
LTC4416/LTC4416-1
3
4416fa
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4416E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC4416I is guaranteed and tested
over the –40°C to 125°C operating temperature range.
Note 3: This results in the same supply current as would be observed with
an external P-channel MOSFET connected to the LTC4416 and operating in
forward regulation.
Note 4: Only 3 of 9 permutations illustrated. This specification is the same
when power is provided through V
S
or V2. This specification is only valid
when V1, V2 and V
S
are within 28V of each other.
Note 5: V1 and V2 are held at 12V and G1 and G2 are forced to 9V. V
S
is
set at 12V to measure the source current at either G1 or G2.
Note 6: V1 and V2 are held at 12V and G1 and G2 are forced to 9V. V
S
is
set at 11.96V to measure the sink current at either G1 or G2.
Note 7: V1 and V2 are held at 12V and G1 and G2 are forced to 9V. V
S
is
set at 11.875V to measure the sink current at either G1 or G2.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
G1, G2 Controller
I
G(SRC)
I
G(SNK)
I
G(FO)
I
G(OFF)
GATE Active Forward Regulation
Source Current
Sink Current
Sink Current During Fast-On
Source Current During Fast-Off
(Note 5)
(Note 6)
(Note 7)
(Note 12)
–9
15
500
–2
200
–500
µA
µA
µA
µA
V
G(ON)
G1 and G2 Clamp Voltage Apply I
G1
= I
G2
= 2µA, V
V1
= V
V2
= 12V,
V
VS
= 11.8V, Measure V
V1
– V
G1
or V
V2
– V
G2
●
7.4 8.25 9.1 V
V
G(OFF)
G1 and G2 Off Voltage Apply I
G1
= I
G2
= –30µA, V
V1
= V
V2
= 12V,
V
VS
= 12.2V, Measure V
V1
– V
G1
or V
V2
– V
G2
●
0.350 0.920 V
t
G(ON)
G1 and G2 Turn-On Time V
GS
< –6V, C
G
= 17nF (Note 8)
●
60 µs
t
G(OFF)
G1 and G2 Turn-Off Time V
GS
> –1.5V, C
G
= 17nF (Note 9)
●
30 µs
t
E(OFF)
Enable Comparator Turn-Off Delay (Note 14) LTC4416-1 Only
●
6 µs
H1 and H2 Open-Drain Drivers
I
H(OFF)
H1 and H2 Off Current 3.6V ≤ V
V1
, V
V2
≤ 36V (Note 10)
●
–1 1 µA
V
H(ON)
H1 and H2 On Voltage 3.6V ≤ V
V1
, V
V2
≤ 36V (Note 10)
●
100 mV
t
H(ON)
H1 and H2 Turn-On Time (Note 11) 5 µs
t
H(OFF)
H1 and H2 Turn-Off Time (Note 11) 10 µs
E1 and E2 Enable Input Comparators
V
REF
E1 and E2 Input Threshold Voltage 3.6V ≤ V
V1
, V
V2
≤ 36V, –40°C to 85°C
4V ≤ V
V1
, V
V2
≤ 36V, –40°C to 125°C
1.180
1.180
1.215
1.215
1.240
1.240
V
V
I
E
E1 and E2 Input Leakage Current 0V ≤ V
E1
, V
E2
≤ 1.5V
●
–100 100 nA
I
G(ENOFF)
Source Current When Other Channel
Enabled (Note 13)
LTC4416
LTC4416-1
–9
–500
–3
µA
µA
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V1 = V2 = 12V, E1 = 2V, E2 = GND, GND = 0V. Current into a pin is
positive and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
Note 8: V1 and V2 are held at 12V and V
S
is stepped from 12.2V to 11.8V
to trigger the event. G1 and G2 voltages are initially V
G(OFF)
.
Note 9: V1 and V2 are held at 12V and V
S
is stepped from 11.8V to 12.2V
to trigger the event. G1 and G2 voltages are initially V
G(ON)
.
Note 10: H1 and H2 are forced to 2V. E1 and E2 are forced to 1.5V to
measure the off current of H1 and H2. H1 and H2 are forced with 1mA to
measure the on voltage of H1 and H2.
Note 11: H1 and H2 are forced to 2V. E1 and E2 are stepped from 1.3V
to 1.1V to measure t
S(ON)
. E1 and E2 are stepped from 1.1V to 1.3V to
measure t
S(OFF)
.
Note 12: V1 and V2 are held at 12V and G1 and G2 are forced to 9V. V
S
is
set to 12.05V to measure the source current at either G1 or G2.
Note 13: V1 and V2 are held at 12V and G1 and G2 are forced to 9V. V
S
is set to 12V to measure the source current at either G1 or G2 when the
channel is deselected.
Note 14: V1 and V2 are held at 12V, V
S
= 11.96V and G1 and G2 have a 4k
resistor each to 9V. Measure the delay after the channel is disabled until
the gate signal begins to pull high.
P1-P3P4-P6P7-P9P10-P12

LTC4416IMS-1#PBF

Mfr. #:
Buy LTC4416IMS-1#PBF
Manufacturer:
Analog Devices Inc.
Description:
Power Management Specialized - PMIC 36V, L Loss 2x PwrPath Cntrs for Lrg PFE
Lifecycle:
New from this manufacturer.
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