MAX15014 datasheet(6/25 Pages) MAXIM

6 / 25 page

(VIN_SW = VIN_LDO = VDRAIN = 14V, VEN_SYS = VEN_SW = 2.4V, VREG = VDVREG, VSYNC = VSET_LDO = VSGND = VPGND = 0V,

CREG = 1μF, CIN_SW = 0.1μF, CIN_LDO = 0.1μF, CLDO_OUT = 10μF, CDRAIN = 0.22μF, TA = TJ = -40°C to +125°C, unless otherwise

noted. Typical values are at TA = +25°C.) (Note 1)

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

Note 2: Maximum output current is limited by package power dissipation.

Note 3: This is the minimum voltage needed at SET_LDO for the system to recognize that the user wants an adjustable LDO_OUT.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RESET OUTPUT

RESET Threshold

VRESET

RESET goes high after rising VLDO_OUT

crosses this threshold

92.5

%VOUT

RESET Output Low Voltage

VRL

(VLDO_OUT – VRESET) / IRESET = 4kΩ

0.4

RESET Output High Leakage

Current

IRH

VRESET = 3.3V (For MAX15_ _ _B),

VRESET = 5V (For MAX15_ _ _A)

µA

RESET Output Minimum

Timeout Period

When LDO_OUT reaches RESET threshold,

CT = unconnected

µs

ENABLE to RESET Minimum

Timeout Period

When EN_SYS goes high, CLDO_OUT =

10µF, ILDO_OUT = 50mA,

VLDO_OUT = 3.3V, CT = unconnected

650

µs

Delay Comparator Threshold

(Rising)

VCT-TH

1.220

1.241

1.265

Delay Comparator Threshold

Hysteresis

VCTTH-HYST

100

CT Charge Current

ICT-CHQ

VCT = 0V

1.5

µA

CT Discharge Current

ICT-DIS

THERMAL SHUTDOWN

Thermal Shutdown

Temperature

Temperature rising

+160

°C

Thermal Shutdown Hysteresis

°C

MAX15014–MAX15017

1A, 4.5V to 40V Input Buck Converters with

50mA Auxiliary LDO Regulators

www.maximintegrated.com

Maxim Integrated │ 6

Electrical Characteristics (continued)

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