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34712

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		开关双倍数据速率
页数	文件大小	规格书
23页	473K
描述
3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply

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34712 数据手册

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 T_A= 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⁾

(P_VIN= 3.3 V, I_OUT= ±3.0 A)

t_RISE

t_FALL

t_SS

Switching Node (SW) Fall Time ⁽¹⁹⁾

(P_VIN= 3.3 V, I_OUT= ±3.0 A)

Soft Start Duration

(Normal Mode)

1.3

2.6

Over Current Limit Timer

t_LIM

µs

Over Current Limit Retry Time-out Period

Output Undervoltage/Overvoltage Filter Delay Timer

OSCILLATOR (FREQ)

t_TIMEOUT

t_FILTER

5.0

120

Oscillator Default Switching Frequency ⁽¹⁸⁾

(FREQ = GND)

F_SW

1.0

MHz

kHz

Oscillator Switching Frequency Range

CONTROL AND SUPERVISORY (STBY, SD, PG)

PG Reset Delay

200

1000

t_PGRESET

t_TIMEOUT

8.0

Thermal Shutdown Retry Time-out Period ⁽¹⁹⁾

120

Notes

18. Oscillator Frequency tolerance is ±10%.

19. Design information only, this parameter is not production tested.

34712

Analog Integrated Circuit Device Data

Freescale Semiconductor

1...6 7 8910 11 12...23

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