LTC2914 datasheet(3/16 Pages) LINER

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LTC2914

2914f

The

● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VCC = 3.3V, VLn = 0.45V, VHn = 0.55V, LATCH = VCC, SEL = VCC,

DIS = Open unless otherwise noted. (Note 2)

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; all voltages are referenced to

GND unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VSHUNT

VCC Shunt Regulator Voltage

ICC = 5mA

●

6.2

6.6

6.9

ΔVSHUNT

VCC Shunt Regulator Load Regulation

ICC = 2mA to 10mA

●

200

300

VCC

Supply Voltage (Note 3)

●

2.3

VSHUNT

VCCR(MIN)

Minimum VCC Output Valid

DIS = 0V

●

VCC(UVLO)

Supply Undervoltage Lockout

VCC Rising, DIS = 0V

●

1.9

2.1

ΔVCC(UVHYST) Supply Undervoltage Lockout Hysteresis

DIS = 0V

●

525

ICC

Supply Current

VCC = 2.3V to 6V

●

100

µA

VREF

Reference Output Voltage

IVREF = ±1mA

●

0.985

1.015

VUOT

Undervoltage/Overvoltage Voltage Threshold

●

492

500

508

tUOD

Undervoltage/Overvoltage Voltage Threshold

to Output Delay

VHn = VUOT – 5mV or VLn = VUOT + 5mV

●

125

500

µs

IVHL

VHn, VLn Input Current

●

±15

tUOTO

UV/OV Time-Out Period

CTMR = 1nF

●

8.5

12.5

VLATCH(IH)

OV Latch Clear Input High

●

1.2

VLATCH(IL)

OV Latch Clear Threshold Input Low

●

0.8

ILATCH

LATCH Input Current

VLATCH > 0.5V

●

±1

µA

VDIS(IH)

DIS Input High

●

1.2

VDIS(IL)

DIS Input Low

●

0.8

IDIS

DIS Input Current

VDIS > 0.5V

●

123

µA

ITMR(UP)

TMR Pull-Up Current

VTMR = 0V

●

–1.3

–2.1

–2.8

µA

ITMR(DOWN)

TMR Pull-Down Current

VTMR = 1.6V

●

1.3

2.1

2.8

µA

VTMR(DIS)

Timer Disable Voltage

Referenced to VCC

●

–180

–270

VOH

Output Voltage High UV/OV

VCC = 2.3V, IUV/OV = –1µA

●

VOL

Output Voltage Low UV/OV

VCC = 2.3V, IUV/OV = 2.5mA

VCC = 1V, IUV = 100µA

●

0.1

0.01

0.3

0.15

Three-State Input SEL

VIL

Low Level Input Voltage

●

0.4

VIH

High Level Input Voltage

●

1.4

Pin Voltage when Left in Hi-Z State

ISEL = ±10µA

●

0.7

0.9

1.1

ISEL

SEL High, Low Input Current

●

±25

µA

ISEL(MAX)

Maximum SEL Input Current

SEL Tied to Either VCC or GND

●

±30

µA

ELECTRICAL CHARACTERISTICS

Note 3: VCC maximum pin voltage is limited by input current. Since the

VCC pin has an internal 6.5V shunt regulator, a low impedance supply that

exceeds 6V may exceed the rated terminal current. Operation from higher

voltage supplies requires a series dropping resistor. See Applications

Information.

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