LTC4416/LTC4416-1
36V, Low Loss Dual
PowerPath Controllers for
Large PFETs
FEATURES DESCRIPTIO
Designed Specifically to Drive Large and Small Q The LTC 4416/LTC4416-1 control two sets of external
G
PFETs P-channel MOSFETs to create two near ideal diode functions
Very Low Loss Replacement for Power Supply for power switchover circuits. This permits highly efficient
ORing Diodes ORing of multiple power sources for extended battery life
Wide Operating Voltage Range: 3.6V to 36V and low self heating. When conducting, the voltage drop
40C to 125C Operating Temperature Range across the MOSFET is typically 25mV. For applications with
Reverse Battery Protection a wall adapter or other auxiliary power source, the load is
Automatic Switching Between DC Sources automatically disconnected from the battery when the aux-
Low Quiescent Current: 35A per Channel iliary source is connected.
Load Current Sharing
TM
The LTC4416 integrates two interconnected PowerPath
MOSFET Gate Protection Clamp
controllers with soft switchover control. The soft-off
Precision Input Control Comparators for Setting
switchover permits the users to transfer between two dis-
Switchover Threshold Points
similar voltages without excessive voltage undershoot (or
Open-Drain Feedback Points for Customer Specified
V ) in the output supply. The LTC4416/LTC4416-1 also
DROOP
Hysteresis Control
contain a fast-on feature that dramatically increases gate
Minimal External Components
drive current when the forward input voltage exceeds 25mV.
Space Saving 10-Lead MSOP Package
The LTC4416 fast off feature is engaged when the sense
U
voltage exceeds the input voltage by 25mV. The LTC4416-1
APPLICATIO S
enables the fast off under the same conditions and when
the other external P-channel device is selected using the
High Current PowerPath Switch
enable pins.
Industrial and Automotive Applications
Uninterruptible Power Supplies
The wide operating supply range supports operation from one
Logic Controlled Power Switch
to eight Li-Ion cells in series. The low quiescent current (35A
Battery Backup System
per channel) is independent of the load current. The gate driver
Emergency Systems with Battery Backups
includes an internal voltage clamp for MOSFET protection.
, LT, LTc and LTM are registered trademarks of Linear Technology corporation.
The LTC4416/LTC4416-1 are available in low prolfi e 10-lead
PowerPath is a trademark of Linear Technology corporation.
All other trademarks are the property of their respective owners.
MSOP packages.
LTC4416 vs Schottky Diode
TYPICAL APPLICATIO
Forward Voltage Drop
8.0
Automatic PowerPath Switchover
Under and Overvoltage Shutdown Operation
cONSTANT
V1 = 12V (FAIL)
R
V1 = 13.5V (RESTORE) PRIMARY SUPPLY SUP75P03_07 ON
V
IN
V1
221k 75k
3.6
221k
V WITH
TH1
LTc4416
LTC4416 182k LTC4416-1
HYSTERESIS
V WITH
TH2
187k 24.9k E1 V1 H1 G1
HYSTERESIS
cONSTANT
GND GND G1 24.9k 187k 24.3k E1 V1
VOLTAGE
V
OUT
ScHOTTKY
TO
E2 V V GND GND V
S S S
DIODE
LOAD
H2 G2 E2 V2
4416 TA01c
H1 V2 H2 G2
0
4416 TA01
V2
0.02 UV ENABLED AT 5V, V RESTORED TO LOAD WHEN V RISES TO 5.5V
0.5
IN IN
SUP75P03_07
V2 = 10.8V BACKUP SUPPLY FORWARD VOLTAGE (V) 4416 TA01b OV ENABLED AT 13.5V, V RESTORED TO LOAD WHEN V FALLS TO 12V
IN IN
4416fa
cURRENT (A)
U
ULTC4416/LTC4416-1
U W U
ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO
(Note 1)
TOP VIEW
Supply Voltage (V1, V2) .............................. 14V to 40V
H1 1 10 G1
Voltage from V1 or V2 to V ....................... 40V to 40V
S
E1 2 9 V1
GND 3 8 V
Input Voltage S
E2 4 7 V2
E1, E2 .................................................... 0.3V to 40V H2 5 6 G2
V ........................................................... 14V to 40V MS PACKAGE
S
10-LEAD PLASTIC MSOP
Output Voltage
T = 130C, = 120C/W
JMAX JA
G1 ....... 0.3V to the Higher of V1 + 0.3V or V + 0.3V
S
ORDER PART NUMBER MS PART MARKING*
G2 ....... 0.3V to the Higher of V2 + 0.3V or V + 0.3V
S
H1, H2 ..................................................... 0.3V to 7V
LTC4416EMS LTCFC
Operating Ambient Temperature Range (Note 2)
LTC4416IMS LTCFC
LTC4416E ............................................ 40C to 85C
LTC4416EMS-1 LTCPS
LTC4416I ........................................... 40C to 125C
LTC4416IMS-1 LTCPS
Operating Junction
Order Options Tape and Reel: Add #TR
Temperature Range ................................ 40C to 125C
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: