MAX5072ETJ View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX5072ETJ

2.2MHz, Dual-Output Buck or Boost Converter with POR and Power-Fail Output

Maxim Integrated 

2.2MHz, Dual-Output Buck or Boost

Converter with POR and Power-Fail Output

ELECTRICAL CHARACTERISTICS (continued)

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

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

PHASE converter 2/SOURCE2 waveform

45

degrees

SYNC to SOURCE 1 Phase Delay SYNCPHASE ROSC = 60kΩ, 1%

Clock Output High Level

VCLKOUTH VL = 5.2V, sourcing 5mA

Clock Output Low Level

VCLKOUTL VL = 5.2V, sinking 5mA

FSEL1

FSEL1 Input High Threshold

VIH

V+ = VL = +5.2V

FSEL1 Input Low Threshold

VIL

V+ = VL = +5.2V

EN_ INPUTS

EN_ Input High Threshold

VIH

V+ = VL = +5.2V

EN_ Input Low Threshold

VIL

V+ = VL = +5.2V

EN_ Bias Current

IB(EN)

MANUAL RESET (MR) AND POWER-ON-RESET (RST)

MR Minimum Pulse Width

tMR

45

degrees

4

V

0.4

V

2.4

V

0.8

V

2.4

1.8

V

1.2

0.8

V

250

nA

10

µs

MR Glitch Immunity

MR to RST Propagation Delay

MR Input High Threshold

MR Input Low Threshold

MR Internal Pullup Resistor

Power-On-Reset Threshold

FB_ to RST Propagation Delay

RST Active Timeout Period

RST Output Voltage

RST Output Leakage Current

tMD

VIH

VIL

RMR

VTH

tFD

tRP

VRST_

IRSTLK

Maximum glitch pulse width allowed for

RST to remain high

V+ = VL = +5.2V

V+ = VL = +5.2V

RST goes high 180ms after VOUT1 and

VOUT2 cross this threshold

FB overdrive from 0.8V to 0.6V

ISINK = 3mA (MAX5072ETJ)

ISINK = 3mA (MAX5072ATJ)

V+ = VL = 5.2V, VRST = 23V, VFB_ = 0.8V

100

ns

1

µs

2.4

V

0.8

V

44

kΩ

90

92.5

95 % VOUT

1.1

µs

140

200

360

ms

0.4

V

0.52

1

µA

4 _______________________________________________________________________________________

Share Link: