MCP2021A datasheet(21/46 Pages) MICROCHIP

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 2012-2014 Microchip Technology Inc.

DS20002298C-page 21

MCP2021A/2A

Duty Cycle 4 @ 10.4 kbps

—

0.590

%tBIT

CBUS; RBUS conditions:

1nF; 1 k

 | 6.8 nF;

660

 | 10 nF; 500

THREC(MAX) = 0.251 x VBB,

THDOM(MAX)= 0.389 x VBB,

VBB =7.6V– 18V;

tBIT =96 µs.

D4 = tBUS_REC(MAX)/2 x tBIT

Voltage Regulator

Bus Activity Debounce time

tBDB

250

µs

Bus Activity to Voltage

Regulator Enabled

tBACTIVE

—

200

µs

Voltage Regulator Enabled

to Ready

tVEVR

300

—

1200

µs

Note 1

Chip Select to Ready Mode

tCSR

—

230

µs

Chip Select to Power-Down

tCSPD

—

330

µs

Note 2

Short Circuit to Shutdown

tSHUTDOWN

—

100

µs

RESET Timing

VREG OK Detect to RESET

Inactive

tRPU

——

µs

VREG Not OK Detect to

RESET Active

tRPD

——

µs

2.5

Thermal Specifications

Parameter

Sym

Min

Typ

Max

Units

Test Conditions

Specified Temperature Range

-40

—

+125

C

Maximum Junction Temperature

——

+150

C

Storage Temperature Range

-65

—

+150

C

Recovery Temperature

RECOVERY

—+140—

C

Shutdown Temperature

SHUTDOWN

—+150—

C

Short Circuit Recovery Time

tTHERM

—1.5

5.0

Thermal Package Resistances

Thermal Resistance, 8L-PDIP

JA

—

89.3

—

C/W

Thermal Resistance, 8L-SOIC

JA

—

149.5

—

C/W

Thermal Resistance, 8L-DFN

JA

—

C/W

Thermal Resistance, 14L-PDIP

JA

—

C/W

Thermal Resistance, 14L-SOIC

JA

—

90.8

—

C/W

Thermal Resistance, 14L-TSSOP

JA

—

100

—

C/W

Note 1:

The maximum power dissipation is a function of TJMAX,

JA, and ambient temperature, TA. The maximum

allowable power dissipation at an ambient temperature is PD =(TJMAX –TA)

JA. If this dissipation is

exceeded, the die temperature will rise above 150

C and the MCP2021A/2A will go into thermal shutdown.

2.4

AC Specifications (Continued)

AC Characteristics

Electrical Characteristics:

Unless otherwise indicated, all limits are specified for

VBB = 6.0V to 18.0V; TA = -40°C to +125°C.

Parameter

Sym

Min

Typ

Max

Units

Conditions

Note 1:

Time depends on external capacitance and load. Test condition: CREG = 4.7 µF, no resistor load.

Characterized, not 100% tested.

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