DC1555A Linear Technology, DC1555A Datasheet

DC1555A

Manufacturer Part Number

DC1555A

Description

LTC4365 High Voltage UV, OV And Reverse Supply Protection Controller

Manufacturer

Linear Technology

Series

-r

Datasheets

1.LTC4365CTS8TRMPBF.pdf (16 pages)

2.DC1555A.pdf (6 pages)

Specifications of DC1555A

Design Resources

DC1555 Design Files DC1555A Schematic

Main Purpose

Power Management, Voltage Protection, Over, Under

Embedded

Utilized Ic / Part

LTC4365

Primary Attributes

Secondary Attributes

Kit Application Type

Power Management

Application Sub Type

Overvoltage Protection

Features

Board Intended To Demonstrate Performance Of The LTC4365 High Voltage, Undervoltage Controller

Lead Free Status / Rohs Status

Not applicable / Not applicable

Current page: 1 of 6
Download datasheet (262Kb)

DESCRIPTION

Demonstration circuit DC1555A is intended to demonstrate

the performance of the LTC4365 High Voltage Undervoltage

(UV), Overvoltage (OV) and Reverse Supply Protection

Controller.

The LTC4365 protects circuits from input voltages that may

be too high, too low or negative. It operates by controlling

the gates of two back-to-back connected MOSFETs to keep

the output in a safe range. The OV and UV protection levels

are adjusted by resistive dividers at the OV and UV pins.

Asserting the shutdown pin disables the MOSFETs and

places the LTC4365 in a low-current shutdown state. The

FAULT pin is asserted when the Controller is in shutdown

PERFORMANCE SUMMARY

SYMBOL

ΔV

VIN

VIN(R)

GATE(UP)

GATE(FAST)

GATE(SLOW)

GATE(FAST)

FAULT

IN(UVLO)

SHDN

GATE

PARAMETER

Input Voltage Range

Input Supply Undervoltage Lockout

Input Supply Current

Reverse Input Supply Current

External N-Channel Gate Drive (Gate – V

External N-Channel Gate Pull-Up current

External N-Channel Fast Gate Pull-Down Current

External N-Channel Gentle Gate Pull-Down Current Gentle Shutdown, GATE = 20V, V

UV Input Threshold Voltage

OV Input Threshold Voltage

External N-Channel Fast Gate Turn-Off Delay

OV, UV Fault Propagation Delay

SHDN Input Threshold

OUT

)

= 25°C)

CONDITIONS

SHDN = 0V

SHDN = 2.5V

GATE

Fast Shutdown, GATE = 20V, V

UV Falling, ΔV

OV Rising, ΔV

UV: 1V 0.48V or OV: 0.52V to ΔV

UV: 1V 0.48V or OV: 0.52V to FAULT = Low

SHDN Falling to ΔV

FGATE

Rising

= –40V, V

= V

OUT

= 2.2nF

UV, OV and Reverse Supply

= V

= 5V, I

= 12V to 34V, I

OUT

mode or when the input voltage is outside of the UV or

OV level.

The LTC4365 can withstand DC voltages between –40V

and 60V and has a valid operating range of 2.5V to 34V.

The DC1555A includes the LTC4365 Controller, two back-

to-back connected power MOSFETs, three jumpers and

three LEDs to indicate the input and output voltages and

the FAULT pin signal.

Design ﬁ les for this circuit board are available at

http://www.linear.com/demo

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.

OUT

GATE(ON)

DEMO MANUAL DC1555A

= 0V

GATE

= 12V

GATE

= –1μA

= 0V

LTC4365: High Voltage

GATE

Protection Controller

= –1μA

GATE

= V

OUT

= 0V

OUT

= 12V

492.5

MIN

–40

–12

1.8

7.4

0.4

–1.2

0.75

TYP

–20

500

2.2

3.6

8.4

507.5

MAX

–1.8

150

–30

180

2.4

4.2

9.8

1.2

dc1555af

UNITS

μA

μs

Related parts for DC1555A

DC1555A Summary of contents

Page 1

... OV level. The LTC4365 can withstand DC voltages between –40V and 60V and has a valid operating range of 2.5V to 34V. The DC1555A includes the LTC4365 Controller, two back- to-back connected power MOSFETs, three jumpers and three LEDs to indicate the input and output voltages and the FAULT pin signal. Design ﬁ ...

Page 2

... LTC4365. Refer to Figures 1a and 1b for proper measurement equipment setup and follow the procedure below. Note that the circuit on the DC1555A is optimized for 12V operation; The Si4230 FET limits overvoltage and reverse voltage to 30V and –30V, respectively. Refer to the LTC4365 data sheet for applications optimized for other voltages ...

Page 3

... QUICK START PROCEDURE – POWER 0V TO 20V SUPPLY + + POWER 0V TO 30V SUPPLY – DEMO MANUAL DC1555A Figure 1a. Reverse Voltage Measurement Figure 1b. Undervoltage/Overvoltage Measurement dc1555a F01a R LOAD dc1555a F01b dc1555af 3 ...

Page 4

... DEMO MANUAL DC1555A PARTS LIST ITEM QUANTITY REFERENCE Required Circuit Components 1 3 CLD1, CLD2, CLD3 (OPT (OPT (OPT D1 (OPT (OPT (OPT E1, E2, E6 E3, E4, E5 JP1, JP2, JP3 (OPT (Bal to #1608A XJP1, XJP2, XJP3 DESCRIPTION Current Limiting, Diode, SOD-80 Capacitor, X5R, 4.7μF , 50V, 20%, 1210 Capacitor, Alum, 47μ ...

Page 5

... SCHEMATIC DIAGRAM 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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. DEMO MANUAL DC1555A dc1555af 5 ...

Page 6

... DEMO MANUAL DC1555A Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods ...

Related keywords

DC1555A datasheet
DC1555A data sheet
DC1555A pdf datasheet
DC1555A component
DC1555A part
DC1555A distributor
DC1555A RoHS
DC1555A datasheet download