MAX1536ETI+ datasheet(3/19 Pages) MAXIM

Part #	MAX1536ETI+

Description	3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage Control

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Manufacturer	MAXIM [Maxim Integrated Products]

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3 / 19 page

3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-

Down Regulator with Dynamic Output Voltage Control

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = VCC = VSHDN = +3.3V, VREFIN = +1.5V, SKIP = AGND, TA = 0°C to +85°C, unless otherwise noted. Typical

values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ICC + IIN

SHDN = AGND; current into VCC and IN;

LX = 0 or +3.3V

0.2

20

IIN

SHDN = AGND; current into IN; LX = 0

0.2

20

Shutdown Supply Currents

ILX

SHDN = AGND; current into LX; LX = +3.3V

0.1

20

µA

REFERENCE

REF Voltage

VREF

VCC = VIN = +3.0V to +5.5V

1.985

2.000

2.015

V

REF Load Regulation

IREF = -1µA to +50µA

10

mV

REFIN Input Voltage Range

VREFIN

VCC = VIN = +3.0V to +5.5V, VCC > VREFIN + 1.35V

0.7

2.0

V

REFIN Input Bias Current

IREFIN

VREFIN = 1.5V, VFB = 1.01

× VREFIN

-50

+50

nA

FAULT DETECTION

Thermal Shutdown

TSHDN

Rising, hysteresis = 15°C

165

°C

VCC and VIN rising, hysteresis 60mV typical

2.4

2.6

2.8

VCC - VREFIN, VCC rising, hysteresis 60mV typical

0.9

1.35

Undervoltage Lockout

Threshold

VCC - VFB, VCC rising, hysteresis 60mV typical

0.9

1.35

V

PGOOD Lower Trip Threshold

No load, falling edge, hysteresis = 1% (Note 4)

-12.5

-10

-8.0

%

PGOOD Upper Trip Threshold

No load, rising edge, hysteresis = 1% (Note 4)

+8.0

+10

+12.5

%

PGOOD Propagation Delay

tPGOOD

FB forced 2% beyond PGOOD trip threshold

5

µs

PGOOD Output Low Voltage

ISINK = 1mA

0.1

V

PGOOD Leakage Current

High-impedance state, forced to +5.5V

1

µA

FBLANK = VCC

112

150

188

FBLANK = open or AGND

75

100

125

Fault Blanking Time

tFBLANK

FBLANK = REF

37

50

63

µs

INPUTS AND OUTPUTS

SHDN, SKIP, GATE, VIN = VCC = +3.3V,

rising edge, hysteresis = 100mV

0.9

1.3

1.6

Logic Input Threshold

VSHDN,

VSKIP,

VGATE

SHDN, SKIP, GATE, VIN = VCC = +5.0V,

rising edge, hysteresis = 100mV

1.15

1.55

1.95

V

Logic Input Current

SHDN, SKIP, GATE

-0.5

+0.5

µA

FBLANK = VCC

VCC - 0.2

FBLANK = REF

1.8

2.2

FBLANK = open

0.8

1.2

FBLANK Logic Thresholds

VFBLANK

FBLANK = AGND

0.2

V

FBLANK Input Current

IFBLANK

FBLANK forced to AGND or VCC

-5

+5

µA

OD On-Resistance

ROD

GATE = VCC

10

25

Ω

OD Leakage Current

GATE = AGND, VOD = +5.5V

-50

+50

nA

OD On-Resistance

ROD

GATE = AGND

10

25

Ω

OD Leakage Current

GATE = VCC, VOD = +5.5V

-50

+50

nA

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