IC CTRLR LOWLOS PWRPATH TSOT23-6

LTC4412HVIS6#TRPBF

Manufacturer Part NumberLTC4412HVIS6#TRPBF
DescriptionIC CTRLR LOWLOS PWRPATH TSOT23-6
ManufacturerLinear Technology
SeriesPowerPath™
LTC4412HVIS6#TRPBF datasheet
 


Specifications of LTC4412HVIS6#TRPBF

ApplicationsHandheld/Mobile DevicesFet TypeP-Channel
Number Of Outputs1Internal Switch(s)No
Delay Time - On110µsDelay Time - Off13µs
Voltage - Supply2.5 V ~ 36 VCurrent - Supply19µA
Operating Temperature-40°C ~ 125°CMounting TypeSurface Mount
Package / CaseTSOT-23-6, TSOT-6Operating Temperature (max)125C
Operating Temperature (min)-40CPin Count6
MountingSurface MountPackage TypeTSOT-23
Case Length2.9mmScreening LevelAutomotive
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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FEATURES
Very Low Loss Replacement for Power Supply
OR’ing Diodes
3V to 36V AC/DC Adapter Voltage Range
–40 C to 125 C Operating Temperature Range
Minimal External Components
Automatic Switching Between DC Sources
Simplifies Load Sharing with Multiple Batteries
Low Quiescent Current: 11 A
2.5V to 36V Battery Voltage Range
Reverse Battery Protection
Drives Almost Any Size MOSFET for Wide Range of
Current Requirements
MOSFET Gate Protection Clamp
Manual Control Input
Low Profile (1mm) SOT-23 (ThinSOT
U
APPLICATIO S
Industrial and Automotive Applications
Notebook and Handheld Computers
USB-Powered Peripherals
Uninterruptable Power Supplies
Logic Controlled Power Switch
, LTC and LT are registered trademarks of Linear Technology Corporation.
PowerPath and ThinSOT are trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
1N5819
WALL
ADAPTER
INPUT
FDN306P
BATTERY
CELL(S)
LTC4412HV
1
6
V
SENSE
IN
2
5
GND
GATE
3
4
CTL
STAT
Figure 1. Automatic Switchover of Load Between a Battery and a Wall Adapter
36V, Low Loss PowerPath
Controller in ThinSOT
DESCRIPTIO
®
The LTC
4412HV controls an external P-channel MOSFET
to create a near ideal diode function for power switchover
or load sharing. This permits highly efficient OR’ing of mul-
tiple power sources for extended battery life and low self-
heating. When conducting, the voltage drop across the
MOSFET is typically 20mV. For applications with a wall
adapter or other auxiliary power source, the load is auto-
matically disconnected from the battery when the auxiliary
source is connected. Two or more LTC4412HVs may be in-
terconnected to allow load sharing between multiple bat-
teries or charging of multiple batteries from a single charger.
The LTC4412HV is an extended supply and temperature
range version of the LTC4412.
The wide supply operating range supports operation from
TM
) Package
one to eight Li-Ion cells in series. The low quiescent
current (11 A typical) is independent of the load current.
The gate driver includes an internal voltage clamp for
MOSFET protection.
The STAT pin can be used to enable an auxiliary P-channel
MOSFET power switch when an auxiliary supply is
detected. This pin may also be used to indicate to a micro-
controller that an auxiliary supply is connected. The con-
trol (CTL) input enables the user to force the primary
MOSFET off and the STAT pin low.
The LTC4412HV is available in a low profile (1mm) SOT-23
package.
LTC4412HV vs Schottky Diode Forward Voltage Drop
TO LOAD
C
OUT
V
CC
470k
STATUS OUTPUT
LOW WHEN WALL
4412HV F01
ADAPTER PRESENT
LTC4412HV
U
1
CONSTANT
R
ON
LTC4412HV
CONSTANT
VOLTAGE
SCHOTTKY
DIODE
0
0.02
0.5
FORWARD VOLTAGE (V)
4412HV F01b
sn4412hv 4412hvfs
TM
1

LTC4412HVIS6#TRPBF Summary of contents

  • Page 1

    ... Low Profile (1mm) SOT-23 (ThinSOT U APPLICATIO S Industrial and Automotive Applications Notebook and Handheld Computers USB-Powered Peripherals Uninterruptable Power Supplies Logic Controlled Power Switch , LTC and LT are registered trademarks of Linear Technology Corporation. PowerPath and ThinSOT are trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO 1N5819 WALL ADAPTER INPUT ...

  • Page 2

    LTC4412HV ABSOLUTE MAXIMUM (Note 1) Supply Voltage (V ) .................................. –14V to 40V IN Voltage from V to SENSE ........................ – 40V to 40V IN Input Voltage CTL ........................................................– 0.3V to 40V SENSE .................................................... –14V to 40V ...

  • Page 3

    ELECTRICAL CHARACTERISTICS temperature range, unless otherwise noted specifications are at T and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified. SYMBOL PARAMETER GATE and STAT Outputs GATE Active Forward Regulation I Source ...

  • Page 4

    LTC4412HV W U TYPICAL PERFOR A CE CHARACTERISTICS V vs Temperature and FR Supply Voltage 2. 28V 36V IN 18 –50 – 100 TEMPERATURE ( C) ...

  • Page 5

    CTIO S V (Pin 1): Primary Input Supply Voltage. Supplies power IN to the internal circuitry and is one of two voltage sense inputs to the internal analog controller (The other input to the controller ...

  • Page 6

    LTC4412HV U OPERATIO Operation can best be understood by referring to the Block Diagram, which illustrates the internal circuit blocks along with the few external components, and the graph that accompanies Figure 1. The terms primary and auxiliary are arbitrary ...

  • Page 7

    U U APPLICATIO S I FOR ATIO Introduction The system designer will find the LTC4412HV useful in a variety of cost and space sensitive power control applica- tions that include low loss diode OR’ing, fully automatic switchover from a primary ...

  • Page 8

    LTC4412HV U U APPLICATIO S I FOR ATIO V and SENSE Pin Usage IN Since the analog controller’s thresholds are small ( 20mV), the V and SENSE pin connections should be made way to avoid unwanted I ...

  • Page 9

    U TYPICAL APPLICATIO S Automatic PowerPath Control The applications shown in Figures 1, 2 and 3 are automatic ideal diode controllers that require no assistance from a microcontroller. Each of these will automatically connect the higher supply voltage, after accounting ...

  • Page 10

    LTC4412HV U TYPICAL APPLICATIO S rising. This is due to the SENSE pin voltage rising above the battery voltage and turning off the MOSFET before the Schottky diode turns on. The factors that determine the magnitude of the voltage droop ...

  • Page 11

    ... Single Charging Source Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. High Side Power Switch Figure 7 illustrates an application circuit for a logic con- trolled high side power switch ...

  • Page 12

    ... Operation of USB Component Peripheral Devices 2.6A Forward Current, 28mV Regulated Forward Voltage www.linear.com 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 6 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 sn4412hv 4412hvfs LT/TP 0304 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2004 ...