LINEAR TECHNOLOGY LTC4232 Technical data

Low Voltage Hot Swap Controllers

LTC4232

UV

F LT

OV

LTC4210

LTC4280/LTC4215

LOAD CURRENT

OUTPUT VOLTAGE

EXTERNAL INPUT

LTC4232: 5A Integrated Hot Swap™ Controller

n

Small Footprint

n

33mΩ MOSFET with R

n

Wide Operating Voltage Range: 2.9V to 15V

n

Adjustable, 10% Accurate (5A) Current Limit

n

Current and Temperature Monitor Outputs

n

Overtemperature Protection

n

Adjustable Current Limit Timer Before Fault

n

Power Good and Fault Outputs

n

Adjustable Inrush Current Control

n

2% Accurate UV and OV Protection

SENSE

V

2.9V to 15V

ADC

V

OUT

5A

IN

Power Good

Current Monitor

Adjustable

Current Limit Timer

LTC4210: Hot Swap Controller in 6-Lead SOT-23 Package

n

Adjustable Analog Current Limit with Circuit Breaker

n

Fast Response Limits Peak Fault Current

n

Adjustable Supply Voltage Power-Up Rate

n

High Side Drive for External N-Channel MOSFET

n

Controls Supply Voltages from 2.7V to 16.5V

n

Undervoltage Lockout

n

Adjustable Overvoltage Protection Using Timer Pin

n

LTC4210-1: Automatic Retry After Fault

n

LTC4210-2: Latchoff After Fault

n

Low Profile (1mm) SOT-23 (ThinSOT™) Package

V

2.7V to 16.5V

IN

Adjustable

Timer

LTC4280/LTC4215: Hot Swap Controllers with I2C Interface and ADC

n

8-Bit ADC Monitors Current and Voltage

n

I2C/SMBus Interface

n

Wide Operating Voltage Range: 2.9V to 15V

n

Inrush Current Limit with Foldback

n

LTC4280 Has Adjustable Overcurrent Filter Time

n

LTC4215 Has Fixed Overcurrent (20µs/420µs),

Optional Soft-Start for Inrush Current (Controlled dI/dt)

n

High Side Drive for External N-Channel MOSFET

n

No External Gate Capacitor Required

n

Input Overvoltage/Undervoltage Protection

n

Optional Latchoff or Auto-Retry After Faults

n

Alerts Host After Faults

V

2.9V to 15V

I2C

IN

8-BIT

ADC

Current Limit Adjustment
and Temperature Monitor

V

OUT

V

OUT

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered
trademarks and Hot Swap and ThinSOT are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.

LTC4224: Compact Dual Low Voltage Hot Swap Controller

V

CC1

FAULT

ON1

ON2

LTC4224

12V

SENSE

12V

GATE

12V

OUT

12V

IN

V

CC

AUXIN

AUXOUT

EN

AUXON
12ON
AUXPGOOD
12PGOOD
FAULT

TIMER

IPMC

12IMON

LTC4223

ADC

n

Controls Load Voltages from 1V to 6V

n

No Gate Components Required

n

Adjustable Current Limit with Circuit Breaker

n

Limits Peak Fault Current in ≤1μs

n

No External Timing Capacitor Required

n

Adjustable Supply Voltage Power-Up Rate

n

Gate Drive for External N-Channel MOSFET

n

LTC4224-1: Latchoff After Fault

n

LTC4224-2: Automatic Retry After Fault

V

IN1

V

IN2

LTC4223: Dual Supply Hot Swap Controller for AMC and MicroTCA

n

Controls 12V and 3.3V Auxiliary Supplies

n

Integrated 0.3Ω Auxiliary Switch

n

Fast Response Limits Peak Fault Current

n

Adjustable Current Limit Circuit Breaker

for 12V Supply

n

Analog Current Limiting

for 3.3V Auxiliary Supply

n

Adjustable 12V Power-Up Rate with

External Capacitor

n

High Side Current Sense Monitor

for 12V Output

n

Thermal Shutdown Protection

n

LTC4223-1: Latchoff After Fault

n

LTC4223-2: Automatic Retry After Fault

n

MicroTCA and AdvancedMC

Applications

12V

3.3V

DUAL

Connector Plug-In Card

12V

7.4A

3.3V
150mA

V

V

OUT1

OUT2

GND

Low Voltage Hot Swap Controller Selection Guide

Part
Number

LTC4210 1 2.7V to 16.5V • Adjustable Overvoltage Protection SOT-23

LTC4211 1 2.5V to 16.5V • Reset Output SO-8, MSOP-8, MSOP-10

LTC4215 1 2.9V to 15V • • • • • 8-Bit

LTC4280 1 2.9V to 15V • • • • 8-Bit Adj. Overcurrent Filter Time 4mm × 5mm QFN-24

LTC4218/
LTC4218-12

LTC4217/
LTC4217-12

LTC4219-5/
LTC4219-12

LTC4232 1 2.9V to 15V • • • • 5A

LTC4221 2 1V to 13.5V • • • • Supply Sequencing Narrow SSOP-16

LTC4222 2 2.9V to 29V • • • • • 10-Bit

LTC4223 2

LTC4224 2 1V to 6V • • Small Solution Size 3mm × 2mm DFN-10, MSOP-10

www.linear.com/LVHotSwap n 1-800-4-LINEAR

# of

Channels VIN Range

2.9V to 26.5V

1

12V Preset

2.9V to 26.5V

1

12V Preset

1 5V/12V Preset • • • • 5A

12V and 3.3V

Auxiliary

Active

Fold-

Soft-

Limiting

back

• • • •

• • • • 2A

• • •

Start

Power

Good Fault

I2C

ADC

Internal

MOSFET Extra Features Packages

Fixed Overcurrent Filter Time GPIO,

Up to 27 I2C Addresses

Current and Temperature

Monitor Outputs

Current and Temperature

Monitor Outputs

Current and Temperature

Monitor Outputs

Current and Temperature

Monitor Output

Dual Version of LTC4215 with

10-Bit ADC and Wide Input Range

MicroTCA Compliant Current

Monitor Output

4mm × 5mm QFN-24,

SSOP-16

5mm × 3mm DFN-16,

SSOP-16

5mm × 3mm DFN-16,

TSSOP-20

5mm × 3mm DFN-16

5mm × 3mm DFN-16

5mm × 5mm QFN-32,

SSOP-36

5mm × 4mm DFN-16,

SSOP-16

0212A