LTC4366-2_15,LTC4366-2_15 pdf中文资料,LTC4366-2_15引脚图,LTC4366-2

LTC4366-1/LTC4366-2

High Voltage Surge Stopper

FeaTures

n

DescripTion

The

LTC

®

4366

surge stopper protects loads from high

voltage transients. By controlling the gate of an external

N-channel MOSFET, the LTC4366 regulates the output

during an overvoltage transient. The load may remain

operational while the overvoltage is dropped across the

MOSFET. Placing a resistor in the return line isolates the

LTC4366 and allows it to float up with the supply; therefore,

the upper limit on the output voltage depends only on the

availability of high valued resistors and MOSFET ratings.

An adjustable overvoltage timer prevents MOSFET dam-

age during the surge while an additional 9 second timer

provides for MOSFET cool down. A shutdown pin reduces

the quiescent current to less than 14µA during shutdown.

After a fault the LTC4366-1 latches off while the LTC4366-2

will auto-retry.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Patents pending.

Rugged Floating Topology

Wide Operating Voltage Range: 9V to >500V

Adjustable Output Clamp Voltage

Controls N-Channel MOSFET

Adjustable Protection Timer

Internal 9 Second Cool-Down Timer

Shutdown I

Q

< 14µA

Available in 8-Lead TSOT and 8-Lead 3mm

×

2mm

DFN Packages

applicaTions

n

Industrial, Automotive and Avionic Surge Protection

High Voltage DC Distribution

28V Vehicle Systems

Typical applicaTion

Overvoltage Protected 1.5A, 28V Supply

V

IN

28V

IXTK90N25L2

V

OUT

1.5A

0.47µF

V

IN

100V/DIV

Overvoltage Protector Regulates Output at 43V During Transient

250V INPUT SURGE

10

324k

V

DD

SD

TIMER

1µF

GATE

2nF

28V

OUT

FB

BASE

12.4k

V

OUT

20V/DIV

43V CLAMP

28V

LTC4366-2

V

SS

422k

436612 TA01a

46.4k

100ms/DIV

436612 TA01b

436612fd

For more information

www.linear.com/LTC4366

1

LTC4366-1/LTC4366-2

absoluTe MaxiMuM raTings

(Notes 1, 2) All voltages relative to V

SS

, unless otherwise noted.

Supply Voltage (V

DD

) ................................ –0.3V to 10V

Supply Voltage (OUT) ................................. –0.3V to 5V

Input Voltages

FB .............................................. –0.3V to OUT + 0.3V

TIMER ................................................... –0.3V to 3.5V

SD

.......................................................... –0.3V to 10V

Output Voltages

BASE.........................................................–1.5V to 4V

OUT-BASE ............................................ –0.3V to 5.5V

GATE (Note 3) ........................................ –0.3V to 15V

GATE-OUT (Note 3)................................ –0.3V to 10V

Currents

I

VDD

...................................................................10mA

I

OUT

...................................................................10mA

BASE................................................. –300µA to 10µA

SD

.......................................................–10mA to 10µA

Operating Temperature Range

LTC4366C ................................................ 0°C to 70°C

LTC4366I .............................................–40°C to 85°C

LTC4366H .......................................... –40°C to 125°C

LTC4366MP ....................................... –55°C to 125°C

Storage Temperature Range .................. –65°C to 150°C

Lead Temperature (Soldering, 10 sec)

TSOT-23 Package Only .................................... 300°C

pin conFiguraTion

TOP VIEW

V

DD

1

SD

2

TIMER 3

V

SS

4

8 GATE

7 OUT

6 FB

5 BASE

V

SS

1

TIMER 2

SD

3

V

DD

4

9

8

7

6

5

BASE

FB

OUT

GATE

TS8 PACKAGE

8-LEAD PLASTIC TSOT-23

T

JMAX

= 125°C,

θ

JA

= 195°C/W

DDB PACKAGE

8-LEAD (3mm

×

2mm) PLASTIC DFN

T

JMAX

= 125°C,

θ

JA

= 75°C/W IF V

SS

IS SOLDERED TO PCB,

θ

JA

= 135°C/W IF V

SS

IS NOT SOLDERED TO PCB

EXPOSED PAD (PIN 9), PCB V

SS

CONNECTION OPTIONAL

2

436612fd

For more information

www.linear.com/LTC4366

LTC4366-1/LTC4366-2

orDer inForMaTion

Lead Free Finish

TAPE AND REEL (MINI)

LTC4366CTS8-1#TRMPBF

LTC4366ITS8-1#TRMPBF

LTC4366HTS8-1#TRMPBF

LTC4366CDDB-1#TRMPBF

LTC4366IDDB-1#TRMPBF

LTC4366HDDB-1#TRMPBF

LTC4366CTS8-2#TRMPBF

LTC4366ITS8-2#TRMPBF

LTC4366HTS8-2#TRMPBF

LTC4366CDDB-2#TRMPBF

LTC4366IDDB-2#TRMPBF

LTC4366HDDB-2#TRMPBF

TAPE AND REEL

LTC4366CTS8-1#TRPBF

LTC4366ITS8-1#TRPBF

LTC4366HTS8-1#TRPBF

LTC4366CDDB-1#TRPBF

LTC4366IDDB-1#TRPBF

LTC4366HDDB-1#TRPBF

LTC4366CTS8-2#TRPBF

LTC4366ITS8-2#TRPBF

LTC4366HTS8-2#TRPBF

LTC4366CDDB-2#TRPBF

LTC4366IDDB-2#TRPBF

LTC4366HDDB-2#TRPBF

PART MARKING*

LTFMC

LFMD

LTFMF

LFMG

LTFMC

LTFMF

LFMD

LFMG

PACKAGE DESCRIPTION

8-Lead Plastic TSOT-23

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead Plastic TSOT-23

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead Plastic TSOT-23

8-Lead (3mm

×

2mm) Plastic DFN

8-Lead (3mm

×

2mm) Plastic DFN

TEMPERATURE RANGE

0°C to 70°C

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

–40°C to 85°C

–40°C to 125°C

–55°C to 125°C

LTC4366MPTS8-1#TRMPBF LTC4366MPTS8-1#TRPBF

LTC4366MPTS8-2#TRMPBF LTC4366MPTS8-2#TRPBF

LTC4366MPDDB-1#TRMPBF LTC4366MPDDB-1#TRPBF

LTC4366MPDDB-2#TRMPBF LTC4366MPDDB-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.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to:

http://www.linear.com/tapeandreel/

436612fd

For more information

www.linear.com/LTC4366

3

LTC4366-1/LTC4366-2

elecTrical characTerisTics

SYMBOL

V

DD

Regulator

V

Z(VDD)

∆V

Z(VDD)

V

DD

I

VDD(STLO)

I

VDD(STHI)

I

VDD(SD)

V

Z(OUT)

∆V

Z(OUT)

OUT

V

UVLO1

∆V

UVH1

V

UVLO2

∆V

UVH2

I

OUT(AMP)

I

OUT(CP)

I

OUT(SD)

BASE, V

SS

V

Z(BASE)

∆V

Z(BASE)

I

BASE

I

VSS(AMP)

I

VSS(CP)

I

VSS(SD)

GATE Drive

∆V

GATE

I

GATE(ST)

I

GATE(CP)

I

GATE(FD)

I

GATE(FLT)

External N-Channel Gate Drive (GATE-OUT)

GATE Pin Current – Start-Up

GATE Pin Current – Charge Pump On

GATE Pin Current – Fast Discharge

GATE Pin Current – Fault

OUT = 4.9V, I = 0, –1µA

GATE = OUT = 0V

GATE = 5V, OUT = 4.9V

GATE = 10V, OUT = 4.9V

LTC4366C/I/H

LTC4366MP

l

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. All voltages relative to V

SS

, unless otherwise noted.

PARAMETER

V

DD

Shunt Regulator Voltage

V

DD

Shunt Regulator Load Regulation

V

DD

Supply Voltage (Note 3)

V

DD

Pin Current – Start-Up, Gate Low

V

DD

Pin Current – Start-Up, Gate High

V

DD

Pin Current – Shutdown

OUT Shunt Regulator Voltage

OUT Shunt Regulator Load Regulation

OUT Supply Voltage (Note 3)

OUT Undervoltage Lockout 1

OUT Undervoltage Lockout 1 Hysteresis

OUT Undervoltage Lockout 2

OUT Undervoltage Lockout 2 Hysteresis

OUT Pin Current – Regulation Amplifier On

OUT Pin Current – Charge Pump On

OUT Pin Current – Shutdown

BASE Shunt Regulator Voltage (OUT-BASE)

BASE Shunt Regulator Load Regulation

BASE Pin Leakage Current

V

SS

Pin Current – Regulation Amplifier On

V

SS

Pin Current – Charge Pump On

V

SS

Pin Current – Shutdown

I = –10µA, OUT = 4.5V

I = –10µA to –80µA, OUT = 4.5V

OUT = 4.5V, BASE = –0.5V

Rising

LTC4366C/I/H

LTC4366MP

GATE = 0V, V

DD

= 7V, OUT = 0V

GATE Open, V

DD

= 7V, OUT = 0V

V

DD

= 7V, OUT = 0V

I = 1mA, BASE = 0V

I = 1mA to 5mA

CONDITIONS

I = 1mA

I = 1mA to 5mA

LTC4366C/I/H

LTC4366MP

l

MIN

11.5

TYP

12

30

MAX

12.5

90

130

V

Z(VDD)

23

13

8

6.0

70

V

Z(OUT)

2.75

2.80

0.4

4.9

0.5

54

220

6

6.6

200

–5.5

–72

–230

–12

12.5

–11

–28

300

1.2

UNITS

V

mV

V

µA

V

mV

V

µA

V

mV

µA

V

µA

mA

4.5

15

9

5

5.0

3.0

2.42

0.2

4.5

0.3

2.55

0.28

4.75

0.4

37

150

3

5.5

–0.1

–30

–108

6.2

125

–0.8

–45

–160

–7

11.2

–4.5

–3.2

–14

122

0.3

12

–7.5

–20

200

0.7

5.7

30

OUT Regulator

l

4

436612fd

For more information

www.linear.com/LTC4366

LTC4366-1/LTC4366-2

elecTrical characTerisTics

SYMBOL

V

FB(REG)

I

FB

V

SD(TH)

V

SD(HYST)

I

SD

V

TIMER(H)

I

TIMER(UP)

I

TIMER(DN)

PARAMETER

3% FB pin Regulation Threshold (OUT-FB)

FB Pin Leakage Current

SD

Pin Threshold Voltage (V

DD

-SD)

SD

Pin Hysteresis

SD

Pin Input Pull-Up Current

TIMER Pin Threshold

TIMER Pin Pull-Up Current

TIMER Pin Pull-Down Current

V

DD

-SD = 0.7V

OUT-FB = 1.2V

Falling

LTC4366C/I/H

LTC4366MP

LTC4366C/I/H

LTC4366MP

LTC4366C/I/H

LTC4366MP

LTC4366C/I/H

LTC4366MP

FB,

SD,

TIMER

l

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. All voltages relative to V

SS

, unless otherwise noted.

CONDITIONS

MIN

1.193

1.0

147

129

–0.7

–0.5

2.6

–5.1

–4

0.9

0.7

15

420

60

5.9

TYP

1.23

0

1.5

280

–1.6

2.8

–9

1.8

20

700

150

9

MAX

1.267

±1

2.3

530

–3.5

3.1

–13

2.8

25

1200

300

16

19

UNITS

V

µA

V

mV

µA

V

µA

%

µs

ns

Seconds

TIMER Rising, V

DD

= 7V, OUT = V

Z(OUT)

TIMER = 1V

I

TIMER(RATIO)

TIMER Pin Current Ratio I

TIMER(DN)

/I

TIMER(UP)

AC Characteristics

t

DLY-SD

t

DLY-FAST

t

D(COOL)

SD

Low to Gate Low Filter Time

FB Low to Gate Low Delay Time

Cool-Down Timer (Internal)

Step V

DD

-SD from 0V to 3V

Step OUT-FB from 0V to 1.3V

V

DD

= V

Z(VDD)

LTC4366C/I/H

LTC4366MP

l

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:

All currents into pins are positive.

Note 3:

Limits on the maximum rating is defined as whichever limit occurs

first. An internal clamp limits the GATE pin to a maximum of 12V above

source. Driving this pin to voltages beyond the clamp may damage the

device.

Note 4:

T

J

is calculated from the ambient temperature, T

A

, and power

dissipation, P

D

, according to the formula:

T

J

= T

A

+ (P

D

• 250°C/W)

436612fd

For more information

www.linear.com/LTC4366

5

LTC4366-2_15

LTC4366-2_15概述

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