MC34712 datasheet(9/24 Pages) FREESCALE

部品番号	MC34712

部品情報	3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply

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Analog Integrated Circuit Device Data

Freescale Semiconductor

9

34712

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, GND, BOOT)

Switching Node (SW) Rise Time(19)

(PVIN = 3.3 V, IOUT = ±3.0 A)

tRISE

-

14

-

ns

Switching Node (SW) Fall Time(19)

(PVIN = 3.3 V, IOUT = ±3.0 A)

tFALL

-

20

-

ns

Minimum OFF Time

tOFFMIN

-

150

-

ns

Minimum ON Time

tONMIN

-

100

-

ns

Soft Start Duration

(Normal Mode)

tSS

1.3

-

2.6

ms

Over-current Limit Timer

tLIM

-

10

-

ms

Over-current Limit Retry Timeout Period

tTIMEOUT

80

-

120

ms

Output Under-voltage/Over-voltage Filter Delay Timer

tFILTER

5.0

-

25

µs

OSCILLATOR (FREQ)

Oscillator Default Switching Frequency(18)

(FREQ = GND)

FSW

-

1.0

-

MHz

Oscillator Switching Frequency Range

FSW

200

-

1000

kHz

CONTROL AND SUPERVISORY (STBY, SD, PG)

PG Reset Delay

tPGRESET

8.0

-

12

ms

Thermal Shutdown Retry Time-out Period(19)

tTIMEOUT

80

-

120

ms

Notes

18.

Oscillator Frequency tolerance is ±10%.

19.

Design information only, this parameter is not production tested.

同様の部品番号 - MC34712

メーカー	部品番号	データシート	部品情報
Freescale Semiconductor...	MC34712EP	477Kb / 23P	3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply
Freescale Semiconductor...	MC34712EPR2	477Kb / 23P	3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply

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同様の説明 - MC34712

メーカー	部品番号	データシート	部品情報
Freescale Semiconductor...	MC34164-3	477Kb / 23P	3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply
NXP Semiconductors	KT34712UG	2Mb / 16P	Using the 3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply Rev. 4.0, 1/2009
Freescale Semiconductor...	MC34717	778Kb / 28P	5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Power Supply
	MC34713	587Kb / 23P	5.0 A 1.0 MHz Fully Integrated Single Switch-Mode Power Supply
	34717	651Kb / 25P	5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Dual Switch-Mode Power Supply
NXP Semiconductors	KT34717UG	1Mb / 20P	Using the 5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Power Supply Rev. 3.0, 1/2009
Freescale Semiconductor...	MC34716	772Kb / 27P	1.0 MHz Dual Switch-Mode DDR Power Supply
	34716	664Kb / 25P	1.0 MHz Dual Switch-Mode DDR Power Supply
	34712	477Kb / 23P	3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply
NXP Semiconductors	KT34716UG	1,005Kb / 17P	Using the 1.0 MHz Dual Switch-Mode DDR Power Supply Rev. 3.0, 1/2009