MCP2050-ESLASHP datasheet(25/40 Pages) MICROCHIP

25 / 40 page

 2012-2014 Microchip Technology Inc.

DS20002299C-page 25

MCP2050

2.5

Thermal Specifications

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

—

300

µs

(Note 2)

Short-Circuit to Shutdown

tSHUTDOWN

—

100

µs

RESET Timing

VREG OK detect to RESET

inactive

tRPU

——

60.0

µs

VREG not OK detect to

RESET active

tRPD

——

60.0

µs

WWDT

Reset Pulse Length

tWDRST

—

150

—

µs

-40/+100%

Power-Up Watchdog

Window Length

tPOWERUP

—27.2

—

±15%

RWWDTSELECT = 33 kΩ

(Note 2, Note 3)

Watchdog Window Length

tWLENGTH

5.95

8.05

±15%

RWWDTSELECT = 33 kΩ

(Note 4, Note 5)

102

120

138

±15%

RWWDTSELECT = 680 kΩ

(Note 4, Note 5)

Note 1:

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

Characterized, not 100% tested.

tPOWERUP = 0.8 ms × (RWWDTSELECT+1); R in kΩ.

tWLENGTH = (0.175 ms × RWWDTSELECT) + 1.2 ±15%; R in kΩ.

Characterized; tested for RWWDTSELECT = 33 kΩ and 680 kΩ

Parameter

Symbol

Typ

Max

Units

Test Conditions

Recovery Temperature

RECOVERY

+140

—

C

Shutdown Temperature

SHUTDOWN

+150

—

C

Short Circuit Recovery Time

tTHERM

1.5

5.0

Thermal Package Resistances

Thermal Resistance, 14L-PDIP

JA

—

C/W

Thermal Resistance, 14L-SOIC

JA

90.8

—

C/W

Thermal Resistance, 20L-QFN

JA

44.6

—

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 MCP2050 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

Test Conditions

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