MAX8734 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8734

High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

Maxim Integrated 

High-Efficiency, Quad-Output, Main Power-

Supply Controllers for Notebook Computers

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = VCC, V SHDN = 5V,

TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

Overvoltage Fault

Propagation Delay

CONDITIONS

FB3 or FB5 delay with 50mV overdrive

MIN TYP MAX UNITS

10

µs

PGOOD Threshold

FB3 or FB5 with respect to nominal output, falling edge,

typical hysteresis = 1%

-12

-9.5

-7

%

PGOOD Propagation Delay

PGOOD Output Low Voltage

PGOOD Leakage Current

Thermal-Shutdown Threshold

Falling edge, 50mV overdrive

ISINK = 4mA

High state, forced to 5.5V

10

µs

0.3

V

1

µA

+160

oC

Output Undervoltage

Shutdown Threshold

FB3 or FB5 with respect to nominal output voltage

65

70

75

%

Output Undervoltage

Shutdown Blanking Time

From ON_ signal

10

22

35

ms

INPUTS AND OUTPUTS

Feedback Input Leakage Current

PRO Input Voltage

SKIP Input Voltage

TON Input Voltage

ON3, ON5 Input Voltage

Input Leakage Current

SHDN Input Trip Level

VFB3 = VFB5 = 2.2V

Low level

High level

Low level

Float level

High level

Low level

High level

Clear fault level/SMPS off level

Delay start level

SMPS on level

V PRO or VTON = 0 or 5V

VON_ = 0 or 5V

V SKIP = 0 or 5V

V SHDN = 0 or 24V

VCS_ = 0 or 5V

VILIM3, VILIM5 = 0 or 2V

Rising edge

Falling edge

-200 +40 +200

nA

0.6

V

1.5

0.8

1.7

2.3

V

2.4

0.8

V

2.4

0.8

1.7

2.3

V

2.4

-1

+1

-2

+2

-1

+1

µA

-1

+1

-2

+2

-0.2

+0.2

1.2

1.6

2.0

V

0.96 1.00 1.04

DH_ Gate-Driver

Sink/Source Current

DH3, DH5 forced to 2V

2

A

DL_ Gate-Driver Source Current

DL_ Gate-Driver Sink Current

DH_ Gate-Driver On-Resistance

DL_ Gate-Driver On-Resistance

DL3 (source), DL5 (source), forced to 2V

DL3 (sink), DL5 (sink), forced to 2V

BST - LX_ forced to 5V

DL_, high state (pullup)

DL_, low state (pulldown)

1.7

A

3.3

A

1.5

4.0

Ω

2.2

5.0

Ω

0.6

1.5

4 _______________________________________________________________________________________

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