MC34701 查看數據表（PDF） - Freescale Semiconductor

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MC34701

1.5A Switch-Mode Power Supply with Linear Regulator

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics (continued)

Characteristics noted under conditions -40°C ≤ TA ≤ 85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3V using

the typical application circuit (see Figure 33), unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

BUCK CONVERTER (CONTINUED)

High Side Power MOSFET Q1 RDS(ON)(9), (10)

ID = 500mA, TA = 25°C, VBST = 8.0V

Low Side Power MOSFET Q2 RDS(ON)(9), (10)

ID = 500mA, TA = 25°C, VBST = 8.0V

RDS(ON)Q1

mΩ

–

60

–

RDS(ON)Q2

mΩ

–

65

–

Buck Converter Peak Current Limit (High Level)

VOUT Pull-down MOSFET Q3 Current Limit

TA = 25°C, VBST = 8.0V

VOUT Pull-down MOSFET Q3 RDS(ON)(10)

ID = 1.0A, VBST = 8.0V

ILIMH

ILIMPQ3

-4.0

-2.7

-1.5

A

0.75

–

A

2.0

RDS(ON)PQ3

–

Ω

–

1.9

Thermal Shutdown (VOUT Pull-down MOSFET Q3)(9)

Thermal Shutdown Hysteresis (9)

Notes

9. Design information only. This parameter is not production tested.

10. ID is the MOSFET drain current.

TSD

THYS

150

170

190

°C

–

10

–

°C

34701

8

Analog Integrated Circuit Device Data

Freescale Semiconductor

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