MC34717 查看數據表（PDF） - Freescale Semiconductor

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MC34717

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

SW1 Leakage Current (Standby and Shutdown modes)

ISW

-10

-

10

µA

PVIN1 Pin Leakage Current

(Shutdown Mode)

IPVIN1

-10

-

10

µA

Error Amplifier DC Gain(14)

Error Amplifier Unit Gain Bandwidth(14)

Error Amplifier Slew Rate(14)

Error Amplifier Input Offset(14)

AEA

-

150

-

dB

UGBWEA

-

3.0

-

MHz

SREA

-

7.0

-

V/µs

OFFSETEA

-3.0

0

3.0

mV

INV1 Pin Leakage Current

Thermal Shutdown Threshold(14)

Thermal Shutdown Hysteresis(14)

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(14)

Output Voltage Accuracy(14),(15),(16)

Line Regulation(14)

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

Load Regulation(14)

(Normal Operation, IOUT2 = 0.0 to 5.0 A)

Error Amplifier Reference Voltage(14)

Output Under-voltage Threshold

Output Over-voltage 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)(14)

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

Low Side N-CH Power MOSFET (M7) RDS(ON)(14)

(IOUT2 = 1.0 A, VIN = 3.3 V)

M3 RDS(ON)

(VIN = 3.3 V, M3 is on)

SW2 Leakage Current (Standby and Shutdown modes)

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

-8.0

-

-1.5

%

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

10

-

50

mΩ

RDS(ON)LS2

10

-

50

mΩ

RDS(ON)M3

2.0

-

4.0

Ω

ISW

-10

-

10

A

IPVIN2

-10

-

10

µA

Notes

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

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

16. ±1% is assured at room temperature

34717

8

Analog Integrated Circuit Device Data

Freescale Semiconductor

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