MAX15014 datasheet(5/25 Pages) MAXIM

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(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)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Undervoltage Lockout

Hysteresis

UVLO_

LDOHYST

0.3

Output Current

IOUT

VIN = 6V (Note 2)

200

Output Voltage

VLDO_OUT

SET_LDO = SGND,

MAX1501_A

ILDO_OUT = 100µA

4.90

5.06

ILDO_OUT = 1mA

4.90

5.06

6V ≤ VIN_LDO ≤ 40V,

ILDO_OUT = 1mA

4.85

5.15

1mA ≤ IOUT ≤ 50mA,

VIN_LDO = 14V

4.85

5.15

SET_LDO = SGND,

MAX1501_B

ILDO_OUT = 100µA

3.22

3.3

3.35

ILDO_OUT = 1mA

3.22

3.3

3.35

6V ≤ VIN_LDO ≤ 40V,

ILDO_OUT = 1mA

3.2

3.3

3.4

1mA ≤ ILDO_OUT ≤

50mA, VIN_LDO = 14V

3.2

3.3

3.4

Adjustable Output Voltage

Range

VADJ

VSET_LDO > 0.25V

1.5

11.0

Dropout Voltage

ΔVDO

VIN_LDO = 5V,

MAX1501_A

IOUT = 10mA

0.6

IOUT = 50mA

0.82

VIN_LDO = 4.0V,

MAX1501_B

IOUT = 10mA

0.1

IOUT = 50mA

0.4

Startup Response Time

From EN_SYS high to LDO_OUT rise,

RL = 500Ω, SET_LDO = SGND

400

µs

SET_LDO Reference Voltage

VSET_LDO

1.220

1.241

1.265

Minimum SET_LDO Threshold

(Note 3)

185

SET_LDO Input Leakage

Current

ISET_LDO

VSET_LDO = 11V

0.5

100

Power-Supply Rejection Ratio

PSRR

IOUT = 10mA, f = 100Hz, 500mVP-P, VLDO_

OUT = 5V

IOUT = 10mA, f = 1MHz, 500mVP-P, VLDO_

OUT = 5V

Short-Circuit Current

ISC

125

185

300

MAX15014–MAX15017

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

50mA Auxiliary LDO Regulators

www.maximintegrated.com

Maxim Integrated │ 5

Electrical Characteristics (continued)

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