MAX15003 데이터 시트보기 (PDF) - Maxim Integrated

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MAX15003

Triple-Output Buck Controller with Tracking/Sequencing

Maxim Integrated 

MAX15003

Triple-Output Buck Controller with

Tracking/Sequencing

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 5.5V to 23V or VIN = VREG = 4.5V to 5.5V, VDREG_ = VREG, VPGND_ = VSYNC = VPHASE = VSEL = 0V, CREG = 2.2µF, RRT =

100kΩ, CCT = 0.1µF, RILIM_ = 60kΩ, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at VIN = 12V and TA = TJ

= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

PHASE Input Logic High

PHASE Input Logic Low

PHASE Input Bias Current

SEL High Threshold

SEL Low Threshold

SEL Input Bias Current

PGOOD, RESET OUTPUTS

FB_ For Threshold PGOOD_

RESET, PGOOD_ Output Low

Level

RESET, PGOOD_ Leakage

CT Charging Current

CT Pulldown Resistance

CT Threshold for RESET Delay

OSCILLATOR

Switching Frequency Range

(Each Converter)

Switching Frequency Accuracy

(Each Converter)

Phase Delay

RT Voltage

Minimum Controllable On-Time

Minimum Off-Time

SYNC High-Level Voltage

SYNC Low-Level Voltage

SYNC Internal Pulldown Resistor

SYNC Frequency Range

SYNC Minimum On-Time

SYNC Minimum Off-Time

PWM Ramp Amplitude

(Peak-to-Peak)

PWM Ramp Valley

SYMBOL

CONDITIONS

Present only during startup

FB_ falling

Sinking 3mA

Sinking 3mA

CT rising

CT failling

fSW

VSYNC = 0V, fCLK = 1011 / (RRT + 1.75kΩ)

VRT

tON(MIN)

tOFF(MIN)

fSW ≤ 1500kHz

fSW ≥ 1500kHz

VPHASE = 0V (DH1 rising to DH2 rising and

DH2 rising to DH3 rising)

VPHASE = VREG (DH1 rising to DH2 rising

and DH2 rising to DH3 rising)

40kΩ < RRT < 500kΩ

(Note 3)

MIN

2

-1

80

-100

TYP

MAX

0.8

+1

20

+100

UNITS

V

V

µA

%VREG

%VREG

µA

0.540 0.555 0.570

V

0.1

V

-1

+1

µA

1.8

2.0

2.2

µA

33

Ω

1.8

2.6

V

1.2

200

2200 kHz

-5

+5

%

-7

+7

120

degrees

0

degrees

2

V

75

ns

150

ns

2

V

0.8

V

50

100 200

kΩ

0.6

6.9

MHz

30

ns

30

ns

2

V

1

V

Note 1: 100% production tested at TA = TJ = +25°C and TA = TJ = +125°C. Limits at other temperature are guaranteed by design.

Note 2: For 5V applications, connect REG directly to IN.

Note 3: The switching frequency is 1/3 of the SYNC frequency.

4

Maxim Integrated

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