34713 datasheet(8/21 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34713

ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

Table 4. Dynamic Electrical Characteristics

Characteristics noted under conditions 3.0 V

≤ V

IN ≤ 6.0 V, - 40°C ≤ T

A ≤ 85°C, GND = 0 V unless otherwise noted. Typical

values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

BUCK CONVERTER (PVIN, SW, PGND, BOOT)

Switching Node (SW) Rise Time (16)

(PVIN = 3.3 V, IOUT = 5.0 A)

tRISE

Switching Node (SW) Fall Time (16)

(PVIN = 3.3 V, IOUT = 5.0 A)

tFALL

Soft Start Duration (Normal Mode)

ILIM= 1.25 - 1.49 V

1.50 - 1.81 V

1.82 - 2.13 V

2.14 - 2.50 V

tSS

3.2

1.6

0.8

0.4

Over Current Limit Timer

tLIM

Over Current Limit Retry Time-out Period

tTIMEOUT

120

Output Undervoltage/Overvoltage Filter Delay Timer

tFILTER

5.0

µs

OSCILLATOR (FREQ)

Oscillator Default Switching Frequency

Oscillator Frequency tolerance is ±10% (FREQ = GND)

fSW

1.0

MHz

Oscillator Switching Frequency Range

fSW

200

1000

KHz

CONTROL AND SUPERVISORY (SD, PG)

PG Reset Delay

tPGRESET

8.0

Thermal Shutdown Retry Time-out Period (16)

tTIMEOUT

120

Notes

16.

Design information only, this parameter is not production tested.

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