LTC4360ISC8-1#TRPBF Linear Technology, LTC4360ISC8-1#TRPBF Datasheet

IC CTLR OVP 80V SHUTDOWN SC70-8

LTC4360ISC8-1#TRPBF

Manufacturer Part Number
LTC4360ISC8-1#TRPBF
Description
IC CTLR OVP 80V SHUTDOWN SC70-8
Manufacturer
Linear Technology
Type
Overvoltage Protection Controllerr
Datasheet

Specifications of LTC4360ISC8-1#TRPBF

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-VSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC4360ISC8-1#TRPBFLTC4360ISC8-1
Manufacturer:
LT
Quantity:
10 000
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APPLICATIONS
n
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L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT, PowerPath, How Swap and No R
Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
FEATURES
2.5V to 5.5V Operation
Overvoltage Protection Up to 80V
No Input Capacitor or TVS Required for Most
Applications
2% Accurate 5.8V Overvoltage Threshold
<1µs Overvoltage Turn-Off, Gentle Shutdown
Controls N-Channel MOSFET
Adjustable Power-Up dV/dt Limits Inrush
Reverse Voltage Protection (LTC4360-2)
Power Good Output
Low Current Shutdown (LTC4360-1)
Available in a Tiny 8-Lead SC70 Package
USB Protection
Handheld Computers
Cell/Smart Phones
MP3/MP4 Players
Digital Cameras
V
5V
IN
Protection from Overvoltage
IN
ON
LTC4360-1
Si1470DH
GATE
GND
PWRGD
SENSE
OUT
are trademarks of Linear Technology
436012 TA01a
C
OUT
V
5V
1.5A
OUT
DESCRIPTION
The LTC
2.5V to 5.5V systems from power supply overvoltage. It is
designed for portable devices with multiple power supply
options including wall adaptors, car battery adaptors and
USB ports.
The LTC4360 controls an external N-channel MOSFET in
series with the input power supply. During overvoltage
transients, the LTC4360 turns off the MOSFET within 1µs,
isolating downstream components from the input supply.
Inductive cable transients are absorbed by the MOSFET
and load capacitance. In most applications, the LTC4360
provides protection from transients up to 80V without
requiring transient voltage suppressors or other external
components.
The LTC4360 has a delayed start-up and an adjustable dV/dt
ramp-up for inrush current limiting. A PWRGD pin provides
power good monitoring for V
age condition, the LTC4360 automatically restarts with a
start-up delay. The LTC4360-1 features a soft shutdown
controlled by the ON pin, while the LTC4360-2 controls an
optional external P-channel MOSFET for negative voltage
protection.
V
Overvoltage Protection
IN
10V/DIV
5V/DIV
®
, V
V
4360 overvoltage protection controller safeguards
GATE
OUT
Output Protected from Overvoltage at Input
LTC4360-1/LTC4360-2
Si1470DH
C
OUT
= 10µF
0.5µs/DIV
IN
. Following an overvolt-
V
V
OUT
IN
Controller
436012 TA01b
436012fa
1

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LTC4360ISC8-1#TRPBF Summary of contents

Page 1

... Cell/Smart Phones n MP3/MP4 Players n Digital Cameras n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT, PowerPath, How Swap and No R are trademarks of Linear Technology SENSE Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION ...

Page 2

... TAPE AND REEL LTC4360CSC8-1#TRMPBF LTC4360CSC8-1#TRPBF LTC4360CSC8-2#TRMPBF LTC4360CSC8-2#TRPBF LTC4360ISC8-1#TRMPBF LTC4360ISC8-1#TRPBF LTC4360ISC8-2#TRMPBF LTC4360ISC8-2#TRPBF TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER Supplies V Input Voltage Range IN V Input Undervoltage Lockout IN(UVL) I Input Supply Current IN Thresholds V IN Pin Overvoltage Threshold IN(OV) ∆V Overvoltage Hysteresis OV External Gate ...

Page 4

LTC4360-1/LTC4360-2 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° 5V (LTC4360-1) unless otherwise noted Input Supply Current vs Input Voltage 1000 LTC4360 0V, LTC4360-2) ON 100 V = 2.5V ON (LTC4360-1) 10 ...

Page 5

PIN FUNCTIONS GATE: Gate Drive for External N-Channel MOSFET. An internal charge pump provides a 10µA pull-up current to charge the gate of the external N-channel MOSFET. An additional ramp circuit limits the GATE ramp rate when turning on to ...

Page 6

LTC4360-1/LTC4360-2 OPERATION Mobile devices like cell phones and MP3/MP4 players have highly integrated subsystems fabricated from deep submi- cron CMOS processes. The small form factor is accompanied by low absolute maximum voltage ratings. The sensitive electronics are susceptible to damage ...

Page 7

APPLICATIONS INFORMATION The GATE ramp rate is limited to 3V/ms similar rate which results in an inrush current into the load capacitor C of: OUT dV GATE • INRUSH OUT OUT dt The ...

Page 8

LTC4360-1/LTC4360-2 APPLICATIONS INFORMATION MOSFET Configurations and Selection The LTC4360 can be used with various external MOSFET configurations (see Figure 3). The simplest configuration is a single N-channel MOSFET. It has the lowest R voltage drop and is thus the most ...

Page 9

APPLICATIONS INFORMATION L and R form an LC tank circuit with any capacitance IN. If the wall adaptor is powered up first, plugging the wall adaptor output to IN does the equivalent of applying a voltage step ...

Page 10

LTC4360-1/LTC4360-2 APPLICATIONS INFORMATION As the IN pin can withstand up to 80V, a high voltage N- channel MOSFET can be used to protect the system against rugged abuse from high transient or DC voltages up to the BV of the ...

Page 11

APPLICATIONS INFORMATION with the USB input already live. As shown in Figure 9, a large current can build charge the N-channel MOSFET shuts off, the energy stored dumped into C ...

Page 12

LTC4360-1/LTC4360-2 PACKAGE DESCRIPTION 0.30 0.50 MAX REF 2.8 BSC 1.8 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 – 0.40 GAUGE PLANE 0.15 BSC 0.26 – 0.46 NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. ...

Page 13

... Revised GATE Control in Applications Information section 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 14

... Supplies and Reverse Current FDC6561AN OUT 10µF GATE OUT 5V R1 LTC4360 LN1351CTR GATEP PWRGD GND 436012 TA03 : 3µ 2.0V to 45V 0.6V to 39.5V OUT : 3µ 1.6V to 20V 0.6V to 19.5V OUT LT 0111 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2010 V OUT 5V 0.5A 436012fa ...

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