MAX5073 Просмотр технического описания (PDF) - Maxim Integrated

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MAX5073

2.2MHz, Dual-Output Buck or Boost Converter with Internal Power MOSFETs

Maxim Integrated 

2.2MHz, Dual-Output Buck or Boost Converter

with Internal Power MOSFETs

ELECTRICAL CHARACTERISTICS (continued)

(V+ = VL = 5.2V or V+ = 5.5V to 23V, EN_ = VL, SYNC = GND, IVL = 0mA, PGND = SGND, CBYPASS = 0.22µF, CVL = 4.7µF (ceram-

ic), ROSC = 10kΩ (circuit of Figure 1), TA = TJ = TMIN to TMAX, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

INTERNAL OSCILLATOR/SYNC

Maximum Duty Cycle

Switching Frequency Range

Switching Frequency

Switching Frequency Accuracy

DMAX

SYNC = SGND, fSW = 1.25MHz

SYNC = SGND, fSW = 2.2MHz

84

86

95

%

84

86

95

fSW

Each converter

200

2200 kHz

fSET

ROSC = 10kΩ, each converter

1125 1250 1375 kHz

5.6kΩ ≤ ROSC ≤ 56kΩ, 1% each converter

-15

+15

%

SYNC Frequency Range

fSYNC

SYNC input frequency is twice the

individual converter frequency

400

4400 kHz

SYNC High Threshold

SYNC Low Threshold

SYNC Input Min Pulse Width

VSYNCH

VSYNCL

tSYNCIN

2.4

V

0.8

V

100

ns

Clock Output Phase Delay

CLKOUT ROSC = 60kΩ, 1%, with respect to converter

PHASE 2 / SOURCE2 waveform

45

degrees

SYNC to SOURCE1 Phase Delay

Clock Output High Level

Clock Output Low Level

EN_ INPUTS

SYNCPHASE ROSC = 60kΩ, 1%

VCLKOUTH VL = 5.2V, sourcing 5mA

VCLKOUTL VL = 5.2V, sinking 5mA

45

degrees

4

V

0.4

V

EN_ Input High Threshold

VIH

EN_ Input Low Threshold

VIL

EN_ Bias Current

IB(EN)

POWER-GOOD OUTPUT (PGOOD_)

V+ = VL = 5.2V

V+ = VL = 5.2V

2.4

1.8

V

1.2

0.8

V

250

nA

PGOOD_ Threshold

PGOODVTH_

PGOOD goes high after VOUT crosses

PGOOD_ threshold

90

92.5

95 % VOUT

PGOOD_ Output Voltage

PGOOD_ Output Leakage Current

THERMAL MANAGEMENT

VPGOOD_

ILKPGOOD_

ISINK = 3mA (MAX5073ETI)

ISINK = 3mA (MAX5073ATI)

V+ = VL = 5.2V, VPGOOD_ = 23V, VFB_ = 1V

0.4

V

0.52

1

µA

Thermal Shutdown

TSHDN Junction temperature

+150

°C

Thermal Hysteresis

THYST Junction temperature

30

°C

Note 1: Specifications at -40°C are guaranteed by design and not production tested.

Note 2: Operating supply range (V+) is guaranteed by VL line regulation test. Connect V+ to VL for 5V operation.

Note 3: Output current may be limited by the power dissipation of the package, refer to the Power Dissipation section in the

Applications Information.

4 _______________________________________________________________________________________

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