LTC4412HVIS6#TR Linear Technology, LTC4412HVIS6#TR Datasheet

IC CONTROLLER LOW LOSS TSOT23-6

LTC4412HVIS6#TR

Manufacturer Part Number
LTC4412HVIS6#TR
Description
IC CONTROLLER LOW LOSS TSOT23-6
Manufacturer
Linear Technology
Series
PowerPath™r
Datasheet

Specifications of LTC4412HVIS6#TR

Applications
Handheld/Mobile Devices
Fet Type
P-Channel
Number Of Outputs
1
Internal Switch(s)
No
Delay Time - On
110µs
Delay Time - Off
13µs
Voltage - Supply
2.5 V ~ 36 V
Current - Supply
19µA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-6, TSOT-6
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
LTC4412HVIS6#TRLTC4412HVIS6#PBF
Manufacturer:
LT
Quantity:
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LTC4412HVIS6#TRLTC4412HVIS6#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
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Part Number:
LTC4412HVIS6#TRMPBF
Manufacturer:
LT
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LTC4412HVIS6#TRMPBF
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Part Number:
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PowerPath and ThinSOT are trademarks of Linear Technology Corporation.
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
, LTC and LT are registered trademarks of Linear Technology Corporation.
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
Industrial and Automotive Applications
Notebook and Handheld Computers
USB-Powered Peripherals
Uninterruptable Power Supplies
Logic Controlled Power Switch
Figure 1. Automatic Switchover of Load Between a Battery and a Wall Adapter
ADAPTER
BATTERY
CELL(S)
INPUT
WALL
1
2
3
U
V
GND
CTL
LTC4412HV
IN
1N5819
SENSE
GATE
STAT
6
5
4
FDN306P
U
TM
) Package
C
V
OUT
CC
4412HV F01
470k
TO LOAD
STATUS OUTPUT
LOW WHEN WALL
ADAPTER PRESENT
DESCRIPTIO
The LTC
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
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.
36V, Low Loss PowerPath
®
4412HV controls an external P-channel MOSFET
LTC4412HV vs Schottky Diode Forward Voltage Drop
Controller in ThinSOT
1
0
0.02
U
LTC4412HV
FORWARD VOLTAGE (V)
CONSTANT
CONSTANT
VOLTAGE
R
ON
LTC4412HV
SCHOTTKY
DIODE
4412HV F01b
sn4412hv 4412hvfs
0.5
1
TM

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LTC4412HVIS6#TR 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 ...

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