LTC4240IGN datasheet(2/28 Pages) LINER

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LTC4240

4240f

Supply Voltages

5VIN .................................................................... –0.3V to 12V

12VIN ................................................................. –0.3V to 14V

VEEIN ................................................................... 0.3V to –14V

Input Voltages

PRSNT1#, PRSNT2#, SCL, RESETIN,

OFF/ON .................................................. –0.3V to 12V

5VOUT, 5VSENSE, 3VIN,

3VSENSE, 3VOUT ............................ –0.3V to (5VIN + 0.3V)

ADDRIN, PRECHARGE ......................... –0.3V to 5VIN

Output Voltages

TIMER, FAULT, PWRGD, SDA, RESETOUT,

LED, DRIVE, GATE, 12VOUT ....................... –0.3V to 14V

VEEOUT ................................................................ –14V to 0.3V

BE ............................................. 0.3V to (5VIN + 0.3V)

Operating Temperature Range

LTC4240C ............................................... 0

°C to 70°C

LTC4240I .............................................–40

°C to 85°C

Storage Temperature Range .................... 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

ORDER PART

NUMBER

TJMAX = 140°C, θJA = 135°C/W

LTC4240CGN

LTC4240IGN

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Notes 1, 2)

ELECTRICAL CHARACTERISTICS

Consult LTC Marketing for parts specified with wider operating temperature ranges.

TOP VIEW

GN PACKAGE

28-LEAD PLASTIC SSOP

PRSNT1#

PRSNT2#

12VIN

VEEIN

TIMER

5VOUT

FAULT

PWRGD

GND

ADDRIN

SDA

SCL

RESETOUT

OFF/ON

RESETIN

12VOUT

VEEOUT

3VOUT

3VSENSE

3VIN

5VIN

5VSENSE

GATE

PRECHARGE

DRIVE

DGND

LED

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IDD

V12VIN Supply Current

OFF/ON = 0V

VLKO

Undervoltage Lockout

12VIN

7.00

8.00

10.80

5VIN

4.10

4.3

4.45

3VIN

2.35

2.45

2.55

VEEIN

–9

–10.5

VFB

Foldback Current Limit Voltage

VFB = (V5VIN – V5VSENSE), V5VOUT = 0V, TIMER = 0V

VFB = (V5VIN – V5VSENSE), V5VOUT = 3V, TIMER = 0V

VFB = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = 0V

VFB = (V3VIN – V3VSENSE), V3VOUT = 2V, TIMER = 0V

VCB

Circuit Breaker Trip Voltage

VTV = (V5VIN – V5VSENSE), V5VOUT = 5V, TIMER = Open

VTV = (V5VIN – V5VSENSE), V5VOUT = 0V, TIMER = Open

611

VTV = (V3VIN – V3VSENSE), V3VOUT = 3.3V, TIMER = Open

VTV = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = Open

611

tOC

Overcurrent Fault Response Time

(V5VIN – V5VSENSE) = 100mV, TIMER = Open

µs

Overcurrent Fault Response Time

(V3VIN – V3VSENSE) = 100mV, TIMER = Open

µs

tSC

Short-Circuit Response Time

(V5VIN – V5VSENSE) = 200mV, TIMER = Open

µs

(V3VIN – V3VSENSE) = 200mV, TIMER = Open

µs

IGATE(UP)

GATE Pin Turn-On Current

OFF/ON = 0V, VGATE = 0V, TIMER = 0V

– 20

– 65

–100

µA

IGATE(DN)

GATE Pin Turn-Off Current

VGATE = 5V, (Note 3)

100

200

300

µA

IGATE(FAULT) GATE Pin Fault-Off Current

OFF/ON = 0V, VGATE = 2V, TIMER = Open, FAULT = 0V

2.5

8.5

∆VGATE

External Gate Voltage

∆VGATE = (V12VIN – VGATE), IGATE = 1µA

600

1000

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. 12VIN = 12V, VEEIN = –12V, V3VIN = 3.3V, V5VIN = 5V unless otherwise noted.

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