34652 datasheet(9/26 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34652

ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

Table 4. Dynamic Electrical Characteristics

Characteristics noted under conditions 15 V ≤ VPWR ≤ 80 V and -40°C ≤ TA ≤ 85°C. All voltages are referenced to VIN unless

otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

UNDERVOLTAGE CONTROL

UV Active to Gate Low Filter Time

tUVAL

—

1.0

—

OVERVOLTAGE CONTROL

OV Active to Gate Low Filter Time

tOVAL

—

1.0

—

DISABLE INPUT CONTROL PIN (DISABLE) (14)

DISABLE Active to Gate Low Filter Time

tDISAL

—

1.0

—

CURRENT LIMIT CONTROL PINS (ILIM, ICHG)

Short Circuit Protection Delay

tSCPD

—

µs

Overcurrent Limit Filter Time

tOCFT

—

100

—

µs

Overcurrent Limit Regulation Time

tOC

—

3.0

—

ICHG Rise Time

Default

Adjustable with an External Capacitor

tICHGR

—

1.0

—

POWER GOOD OUTPUT PINS (PG, PG) (15)

Power Good Output Delay Time, from Power MOSFET Enhancement to PG

and PG Asserted

tPG

START-UP AND RETRY DELAY TIMER (TIMER)

Start-Up and Retry Delay Timer

Default

Maximum with External Resistor

Minimum with External Resistor

tTIMER

130

—

200

1000

100

270

—

Notes

14.

Referenced to VPWR.

15.

Referenced to VIN.

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