MAX15000AEUB+ datasheet(3/18 Pages) MAXIM

Part #	MAX15000AEUB+

Description	Current-Mode PWM Controllers with Programmable Switching Frequency

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Manufacturer	MAXIM [Maxim Integrated Products]

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Current-Mode PWM Controllers with

Programmable Switching Frequency

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(VIN = +12V (for MAX15000, bring VIN up to 23.6V for startup), 10nF bypass capacitors at IN and VCC, R12 = 15k

Ω (MAX1500_A), R12

= 7.5k

Ω (MAX1500_B), R15 = 1kΩ, C6 = 100nF (see the Typical Application Circuit), NDRV = open, VUVLO/EN = +1.4V, VFB = +1.0V,

COMP = open, VCS = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GATE DRIVER

RON(LOW) Measured at NDRV sinking 100mA

2

4

Driver Output Impedance

RON(HIGH) Measured at NDRV sourcing 20mA

4

10

Ω

Driver Peak Sink Current

1A

Driver Peak Source Current

0.65

A

PWM COMPARATOR

Comparator Offset Voltage

VPWM

VCOMP - VCS

1.24

1.38

1.54

V

CS Input Bias Current

ICS

VCS = 0V

-4

+4

µA

Comparator Propagation Delay

tPWM

Change in VCS = 0.1V

60

ns

CURRENT-LIMIT COMPARATOR

Current-Limit Trip Threshold

VCS

900

1000

1100

mV

CS Input Bias Current

ICS

VCS = 0V

-4

+4

µA

Propagation Delay From

Comparator Input to NDRV

tPDCS

100mV overdrive

60

ns

IN CLAMP VOLTAGE

IN Clamp Voltage

VINC

2mA sink current (Note 2)

24.1

26.1

29.0

V

ERROR AMPLIFIER

Voltage Gain

RLOAD = 100k

Ω

80

dB

Unity-Gain Bandwidth

RLOAD = 100k

Ω, CLOAD = 200pF

2

MHz

Phase Margin

RLOAD = 100k

Ω, CLOAD = 200pF

65

degrees

FB Input Offset Voltage

±1

mV

COMP High Voltage

ICOMP = 0

2.8

COMP Low Voltage

ICOMP = 0

1.1

V

Source Current

0.5

mA

Sink Current

0.5

mA

Reference Voltage

VREF

(Note 3)

1.230

V

Reference Voltage Accuracy

-1.5

+1.5

%

FB Input Bias Current

-50

+50

nA

COMP Short-Circuit Current

8mA

DIGITAL SOFT-START

1984

NDRV

cycles

Soft-Start Duration

tSS

fSW = 350kHz

5.6

ms

Reference Voltage Steps During

Soft-Start

31

steps

Reference Voltage Step

39.67

mV

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