MAX5097AATE+ datasheet(4/20 Pages) MAXIM

Part #	MAX5097AATE+

Description	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 20 page

40V, 600mA Buck Converters with Low-

Quiescent-Current Linear Regulator Mode

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VIN = +14V, IOUT = 1mA, CIN = 100µF, COUT = 22µF, L = 22µH, CBP = 1µF, VEN = +2.4V (Figure 2), SGND = PGND = 0V, TA = TJ =

-40°C to +125°C, unless otherwise noted. Typical values are at TA = TJ = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

5V version, MAX5096B/MAX5097B,

5.5V ≤ VIN ≤ 40V, IOUT = 10mA

4.89

5

5.09

V

Output Voltage

VOUT

3.3V version, MAX5096A/MAX5097A,

4V ≤ VIN ≤ 40V, IOUT = 10mA

89

3.3

3.378

V

ADJ Set Point

VADJ

IOUT = 10mA

1.21

1.2375

1.26

V

ADJ Input Bias Current

IFB

VADJ = 4V

0.5

100

nA

Adjustable Output Voltage Range

VADJ

IOUT = 10mA

1.237

11.000

V

Dropout Voltage

∆VDO

IOUT = 100mA,

VOUT = 0.98 x VOUT(NOMINAL) (5V version

only), MAX5096B/MAX5097B

0.37

V

Startup Response Time

Rising edge of EN to

VOUT = 10% VOUT(NOMINAL),

RL = 500Ω, VADJ = SGND,

LDO/BUCK = 4V, CSS = 2nF

300

µs

5V version,

+5.5V ≤ VIN ≤ +40V, IOUT = 100mA

0.125

Line Regulation

∆VOUT /

∆VIN

3.3V version,

+4V ≤ VIN ≤ +40V, IOUT = 100mA

0.093

mV/V

TJ = +25°C

0.242

0.374

5V version,

IOUT = 100µA to

100mA, VIN = +14V

TJ = -40°C to +125°C

0.242

1

TJ = +25°C

0.164

0.237

Load Regulation

∆VOUT /

∆IOUT

3.3V version,

IOUT = 100µA to

100mA, VIN = +14V

TJ = -40°C to +125°C

0.164

1

mV/mA

Power-Supply Rejection Ratio

PSRR

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

VOUT = +5V, VIN = +14V

60

dB

Short-Circuit Current

ISC

VIN = 6V

150

330

500

mA

BUCK MODE (LDO MODE TRANSITION)

LDO/BUCK High Threshold

2.0

V

LDO/BUCK Low Threshold

0.8

V

LDO/BUCK Input Leakage

LDO/BUCK = 11V

1

µA

Transition Timing from LDO Mode

to Buck Mode

Falling edge of LDO/BUCK to buck

converter on

32

Clock

Periods

Transition Timing from Buck

Mode to LDO Mode

Rising edge of LDO/BUCK to LDO

operation

100

µs

SOFT-START, ENABLE (EN) AND

RESET

Soft-Start Charge Current

ISS

VSS = 0.1V

3

5

7

µA

Soft-Start Reference Voltage

VSS-REF

VOUT = VOUT(NOMINAL) - 20%

0.9

0.99

1.1

V

EN High-Voltage Threshold

VENH

EN = high, regulator on

1.4

V

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