MCP79400 datasheet(3/42 Pages) MICROCHIP

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 2011 Microchip Technology Inc.

DS25009C-page 3

MCP7940X

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings (†)

VCC.............................................................................................................................................................................6.5V

All inputs and outputs w.r.t. VSS ..........................................................................................................-0.6V to VCC +1.0V

Storage temperature ...............................................................................................................................-65°C to +150°C

Ambient temperature with power applied................................................................................................-40°C to +125°C

ESD protection on all pins

 4 kV

TABLE 1-1:

DC CHARACTERISTICS

† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at those or any other conditions above those

indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

DC CHARACTERISTICS

Electrical Characteristics:

Industrial (I):

VCC = +1.8V to 5.5V

TA = -40°C to +85°C

Param.

No.

Sym.

Characteristic

Min.

Typ.

Max.

Units

Conditions

—

SCL, SDA pins

—

VIH

High-level input voltage

0.7 VCC

—V

—

VIL

Low-level input voltage

—

0.3 VCC

0.2 VCC

VVCC = 2.5V to 5.5V

VHYS

Hysteresis of Schmitt

Trigger inputs

(SDA, SCL pins)

0.05

VCC

—V

(Note 1)

VOL

Low-level output voltage

(MFP, SDA)

—0.40

IOL = 3.0 ma @ VCC = 4.5V

IOL = 2.1 ma @ VCC = 2.5V

ILI

Input leakage current

—

±1

AVIN = VSS or VCC

ILO

Output leakage current

—

±1

AVOUT = VSS or VCC

CIN,

COUT

Pin capacitance

(SDA, SCL and MFP)

—10

VCC = 5.0V (Note 1)

TA = 25°C, f = 400 kHz

ICC Read Operating current

—

400

AVCC = 5.5V, SCL = 400 kHz

ICC Write

—

VCC = 5.5V

ICC Read Operating current

SRAM

—

300

AVCC = 5.5V, SCL = 400 kHz

ICC Write

—

400

AVCC = 5.5V, SCL = 400 kHz

D10

ICCS

Standby current

—

AVCC = 5.5V, SCL = SDA = VCC

D11

IBAT

Operating Current

—

700

—

VBAT = 1.8V @ 25°C, Figure 2-1

IVCC

—5

—

AVCC = 3.6V @ 25°C, Figure 2-2

(Note 2)

D12

VTRIP

VBAT Change Over

1.3

1.7

1.5V typical at TAMB = 25°C

D13

VCCFT

VCC Fall Time (Note 1)

300

—

sFrom VTRIP (max) to VTRIP (min)

D14

VCCRT

VCC Rise Time (Note 1)

0—

sFrom VTRIP (min) to VTRIP (max)

D15

VBAT

VBAT Voltage Range

(Note 1)

1.3

5.5

—

D16

COSC

Oscillator Pin

Capacitance

—3

—

(Note 1)

Note 1:

This parameter is periodically sampled and not 100% tested.

Standby with oscillator running.

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