MC34717(2007) 查看數據表（PDF） - Freescale Semiconductor

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MC34717
(Rev.:2007)

5.0 A 1.0 MHz Fully Integrated Dual Switch-Mode Power Supply

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics

Characteristics noted under conditions 3.0 V ≤ VIN ≤ 6.0 V, -40°C ≤ TA ≤ 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

PVIN1 Pin Leakage Current

(Shutdown Mode)

IPVIN1

-10

-

10

µA

INV1 Pin Leakage Current

Thermal Shutdown Threshold (15)

Thermal Shutdown Hysteresis (15)

IINV1

-1.0

-

1.0

µA

TSDFET1

-

170

-

°C

TSDHYFET1

-

25

-

°C

CHANNEL 2 BUCK CONVERTER (PVIN2, SW2, PGND2, BOOT2, INV2, COMP2, ILIM2)

Channel 2 High-side MOSFET Drain Voltage Range

Output Voltage Adjustment Range(15)

Output Voltage Accuracy (15), (16), (17)

Line Regulation (15)

(Normal Operation, VIN = 3.0 V to 6.0 V, IOUT2 = +2.5 A)

Load Regulation (15)

(Normal Operation, IOUT2 = 0.0 A to 5.0 A)

Error Amplifier Reference Voltage (15)

Output Undervoltage Threshold

Output Overvoltage Threshold

Continuous Output Current

Over Current Limit

Soft Start Adjusting Reference Voltage Range

Short Circuit Current Limit

High-Side N-CH Power MOSFET (M6) RDS(ON) (15)

(IOUT2 = 1.0 A, VBOOT2 - VSW2= 3.3 V)

Low-Side N-CH Power MOSFET (M7) RDS(ON) (15)

(IOUT2 = 1.0 A, VIN = 3.3 V)

M3 RDS(ON)

(VIN = 3.3 V, M3 is on)

PVIN2 Pin Leakage Current

(Shutdown Mode)

PVIN

2.5

-

6.0

V

VOUTHI2

0.7

-

3.6

V

-

-1.0

-

1.0

%

REGLN2

-1.0

-

1.0

%

REGLD2

-1.0

-

1.0

%

VREF2

-

0.7

-

V

VUVR2

-1.5

-

-8.0

%

VOVR2

1.5

-

8.0

%

IOUT2

-

-

5.0

A

ILIM2

-

6.5

-

A

VILIM2

1.25

-

VDDI

V

ISHORT2

-

8.5

-

A

RDS(ON)HS2

15

-

50

mΩ

RDS(ON)LS2

15

-

50

mΩ

RDS(ON)M3

2.0

-

4.0

Ω

IPVIN2

-10

-

10

µA

INV2 Pin Leakage Current

IINV2

-1.0

-

1.0

µA

Notes

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

16. This is directly affected by the accuracy of the external feedback network, 1% feedback resistors are recommended.

17. ±1% is assured at room temperature

34717

8

Analog Integrated Circuit Device Data

Freescale Semiconductor

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