LTC1422CS8 datasheet(2/16 Pages) LINER

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LTC1422

PACKAGE/ORDER I FOR ATIO

ORDER PART

NUMBER

TJMAX = 150°C, θJA = 130°C/W (N)

TJMAX = 150°C, θJA = 150°C/W (S)

TOP VIEW

N8 PACKAGE

8-LEAD PDIP

S8 PACKAGE

8-LEAD PLASTIC SO

RESET

TIMER

GND

VCC

SENSE

GATE

Supply Voltage (VCC) ........................................... 13.2V

Input Voltage (TIMER, SENSE) ... – 0.3V to (VCC + 0.3V)

Input Voltage (FB, ON) ........................... – 0.3V to 13.2V

Output Voltage (RESET) ........................ – 0.3V to 13.2V

Output Voltage (GATE) ............................. – 0.3V to 20V

Operating Temperature Range

LTC1422C ............................................... 0

°C to 70°C

LTC1422I ........................................... – 40

°C to 85°C

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

°C to 150°C

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

°C

ABSOLUTE MAXIMUM RATINGS

Consult factory for Military grade parts.

LTC1422CN8

LTC1422CS8

LTC1422IN8

LTC1422IS8

S8 PART MARKING

ELECTRICAL CHARACTERISTICS

1422

1422I

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DC Characteristics

ICC

VCC Supply Current

ON = VCC

0.65

1.00

VLKO

VCC Undervoltage Lockout

2.40

2.47

2.55

VLKH

VCC Undervoltage Lockout Hysteresis

120

VFB

FB Pin Voltage Threshold

1.220

1.232

1.244

∆VFB

FB Pin Threshold Line Regulation

≤ VCC ≤ 12V

0.5

2.5

VFBHST

FB Pin Voltage Threshold Hysteresis

2.0

VTM

TIMER Pin Voltage Threshold

1.208

1.232

1.256

∆VTM

TIMER Pin Threshold Line Regulation

≤ VCC ≤ 12V

215

VTMHST

TIMER Pin Voltage Threshold Hystersis

ITM

TIMER Pin Current

Timer On, GND

≤ VTIMER ≤ 1.5V

– 2.5

– 2.0

– 1.5

µA

Timer Off, VTIMER = 1.5V

VCB

Circuit Breaker Trip Voltage

VCB = (VCC – VSENSE)

ICP

GATE Pin Output Current

Charge Pump On, VGATE = GND

–12

– 10

– 8

µA

Charge Pump Off, VGATE = VCC

∆VGATE

External N-Channel Gate Drive

VGATE – VCC

VONHI

ON Pin Threshold High

1.25

1.30

1.35

VONLO

ON Pin Threshold Low

1.20

1.23

1.26

VONHYST

ON Pin Hysteresis

VOL

Output Low Voltage

RESET, IO = 3mA

0.14

0.4

IPU

Logic Output Pull-Up Current

RESET = GND

– 12

µA

tRST

Soft Reset Time

µs

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted.

(Note 1)

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

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