MC34700_09 datasheet(6/28 Pages) FREESCALE

Part #	MC34700

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

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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ELECTRICAL CHARACTERISTICS

STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS

Analog Integrated Circuit Device Data

6

Freescale Semiconductor

34700

BUCK CONVERTER 2

Maximum VIN2 Input Voltage

VIN2_MAX

-

6.0

-

V

Minimum VIN2 Input Voltage

VIN2_MIN

-

1.5

-

V

Maximum Output Voltage

VIN = 9.0 V

VDC2VOUTMAX

-

3.6

-

V

Minimum Output Voltage

VIN = 9.0 V

VDC2VOUTMIN

-

0.7

-

V

Maximum Output Current

IOUTDC2MAX

-

1.25

-

A

Total System Accuracy

ΔVOUT2

-1.5

-

1.5

%

Peak Short-circuit Current Limit

ISHORT2

2.0

-

4.5

A

High Side On Resistance

RDS(ON)_HS

-

175

-

m

Ω

Low Side On Resistance

RDS(ON)_LS

-

150

-

m

Ω

Equivalent Dropout Resistance

VIN2 = 1.7 V, VOUT = 1.25 V,

ILOAD = 1.25 A

RDO

-

150

-

m

Ω

SW2 Leakage Current

VIN = 12 V, VIN2 = 0 V, EN2 = 0 V

ISW2

-

400

-

μA

Error Amplifier DC Gain

AEA

-

110

-

dB

Error Amplifier Unity Gain Bandwidth

GBW

-

4.0

-

MHz

Error Amplifier Slew Rate

SR

-

1.8

-

V/

μs

Current Limit Timer

tLIM2

-

10

-

ms

Current Limit Retry Timeout Period

tTIMEOUT2

-

100

-

ms

BUCK CONVERTER 3

Maximum VIN3 Input Voltage

VIN3_MAX

-

6.0

-

V

Minimum VIN3 Input Voltage

VIN3_MIN

-

1.5

-

V

Maximum Output Voltage

VDC3VOUTMAX

-

3.6

-

V

Minimum Output Voltage

VDC2VOUTMIN

-

0.7

-

V

Maximum Output Current

IOUTDC3MAX

-

1.25

-

A

Total System Accuracy

ΔVOUT3

-1.5

-

1.5

%

Peak Short-circuit Current Limit

ISHORT3

2.0

-

4.5

A

High Side On Resistance

RDS(ON)_HS

-

160

-

m

Ω

Low Side On Resistance

RDS(ON)_LS

-

140

-

m

Ω

Equivalent Dropout Resistance

VIN2 = 1.7 V, VOUT = 1.25 V,

ILOAD = 1.25 A

RDO

-

150

-

m

Ω

SW3 Leakage Current

VIN = 12 V, VIN3 = 0 V, EN3 = 0 V

ISW3

-

400

-

μA

Error Amplifier DC Gain

AEA

-

110

-

dB

Error Amplifier Unity Gain Bandwidth

GBW

-

4.0

-

MHz

Error Amplifier Slew Rate

SR

-

1.8

-

V/

μs

Current Limit Timer

tLIM3

-

10

-

ms

Current Limit Retry Timeout Period

tTIMEOUT3

-

100

-

ms

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

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MC34700 Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc

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