MC34700 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC34700

9.0 to 18 V, Quad Output, Integrated MOSFET Power Supply

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS

Table 2. Electrical Characteristics (continued)

Characteristics noted under conditions 9.0 V ≤ VIN ≤ 18 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

Test Conditions

Symbol

Min Typ Max Unit

RAMP GENERATORS

Ramp Amplitude (DC/DC1)

VFF Gain (DC/DC1)

Ramp Amplitude (DC/DC2,3)

VFF Gain (DC/DC2,3)

Ramp Bottom (DC/DC1,2,3)

Min Duty Cycle (DC/DC1)

Max Duty Cycle (DC/DC1)

Min Duty Cycle (DC/DC2,3)

Max Duty Cycle (DC/DC2,3)

POWER-GOOD

O V Threshold, all regulators

UV Threshold, all regulators

PGOOD Output Low Level

PGOOD Reset Delay

PGOOD Glitch Rejection

BUCK CONVERTER 1

Maximum VIN1 Input Voltage

Minimum VIN1 Input Voltage

Maximum Output Voltage

Minimum Output Voltage

Maximum Output Current

Total System Accuracy

Peak Short-circuit Current Limit

High Side On Resistance

Equivalent Dropout Resistance

Error Amplifier DC Gain

Error Amplifier Unity-gain Bandwidth

Error Amplifier Slew Rate @ 15 pF

Current Limit Timer

Current Limit Retry Timeout Period

VFF_GAIN1 x PVIN1, PVIN1 = 18 V

VFF_GAIN2 x PVIN2, PVIN2 = 6.0 V

ILOAD1 = 0 A

ILOAD1 = 0 A

ILOAD1 = 0 A

ILOAD1 = 0 A

VRAMP_AMP1

-

1.0

-

VFF_GAIN1

VRAMP_AMP2,3

-

0.055

-

1.25

-

VFF_GAIN2,3

-

0.208

VRAMP_OFFSET

-

0.2

-

D1

-

-

16

D1

68.4

-

-

D2,3

-

0

0

D2,3

83.6

-

-

VP-P

V/V

VP-P

V/V

V

%

%

%

%

Percentage of setpoint

Percentage of setpoint

ISINK = 6.0 mA

ΔOV_TH

ΔUV_TH

VOL_PGOOD

tPG-RESET

tPG-FILTER

-

-

108

%

92

-

-

%

-

0.4

-

V

100

μs

10

μs

VIN = 9.0V

VIN = 9.0V

VIN1 = 5.5 V, VOUT = 3.3 V, ILOAD = 2.0 A

VIN1_MAX

VIN1_MIN

VDC1VOUTMAX

VDC1VOUTMIN

IOUTDC1MAX

ΔVOUT1

ISHORT1

RDS(ON)_HS

RDO

AEA

GBW

SR

tLIM1

tTIMEOUT1

-

18

-

V

-

9.0

-

V

-

5.25

-

V

-

2.0

-

V

-

1.5

-

A

-1.5

-

1.5

%

2.5

-

4.5

A

-

150

-

mΩ

-

183

-

mΩ

-

110

-

dB

-

4.0

-

MHz

-

1.8

-

V/μs

-

10

-

ms

-

100

-

ms

Analog Integrated Circuit Device Data

Freescale Semiconductor

34700

5

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