LTC2907CDDB datasheet(3/16 Pages) LINER

3 / 16 page

LTC2906/LTC2907

29067f

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = V1 = 2.5V, VADJ = 0.55V, S1 = TOL = 0V, unless otherwise noted.

(Notes 2, 3, 4)

ELECTRICAL CHARACTERISTICS

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

of a device may be impaired.

Note 2: The greater of V1, VCC is the internal supply voltage (VMAX).

Note 3: All currents into pins are positive; all voltages are referenced to

GND unless otherwise noted.

Note 4: For reset thresholds test conditions refer to the voltage threshold

programming table in the Applications Information section.

Note 5: The output pins RST and RST have an internal pull-up to VMAX of

typically –6

µA. However, an external pull-up resistor may be used when

faster rise time is required or for VOH voltages greater than VMAX.

Note 6: The input current to the three-state input pins are the pull-up and

the pull-down current when the pins are either set to V1 or GND

respectively. In the open state, the maximum leakage current to V1 or GND

permissible is 10

µA.

5V Threshold Voltage vs

Temperature

3.3V Threshold Voltage vs

Temperature

2.5V Threshold Voltage vs

Temperature

TYPICAL PERFOR A CE CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ITMR(UP)

TMR Pull-Up Current

(LTC2907)

VTMR = 0V

–1.5

–2.1

–2.7

µA

ITMR(DOWN)

TMR Pull-Down Current

(LTC2907)

VTMR = 1.4V

1.5

2.1

2.7

µA

tRST

Reset Time-Out Period

(LTC2906)

140

200

260

tRST

Reset Time-Out Period

(LTC2907)

CTMR = 22nF

140

200

260

tUV

VX Undervoltage Detect to

VX Less Than Reset Threshold VRTX

150

µs

RST or RST

by More than 1%

VOL

Output Voltage Low RST, RST

I = 2.5mA

0.15

0.4

I = 100

µA; V1 and/or VCC = 1V (RST Only)

0.05

0.3

VOH

Output Voltage High RST, RST

I = –1

µA

VMAX – 1

(Notes 2, 5)

Three-State Inputs S1, TOL

VIL

Low Level Input Voltage

0.4

VIH

High Level Input Voltage

1.4

Pin Voltage when Left in Hi-Z State

I = –10

µA

0.7

I = 0

µA

0.9

I = 10

µA

1.1

IVPG

Programming Input Current (Note 6)

±25

µA

Specifications are at TA = 25°C unless otherwise noted.

TEMPERATURE (

°C)

29067 G01

TEMPERATURE (

°C)

TEMPERATURE (

°C)

3.12

3.07

3.02

2.97

2.92

2.87

29067 G02

29067 G03

2.375

2.325

2.275

2.225

2.175

4.75

4.70

4.65

4.60

4.55

4.50

4.45

4.40

4.35

–50

100

–25

–50

100

–25

–50

100

–25

7.5%

10%

7.5%

10%

7.5%

10%

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