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MAX16936

36V, 220kHz to 2.2MHz Step-Down Converter with 28µA Quiescent Current

Maxim Integrated 

MAX16936

36V, 220kHz to 2.2MHz Step-Down Converter

with 28µA Quiescent Current

ELECTRICAL CHARACTERISTICS (continued)

(VSUP = VSUPSW = 14V, VEN = 14V, L1 = 2.2FH, CIN = 4.7FF, COUT = 22FF, CBIAS = 1FF, CBST = 0.1FF, RFOSC = 12kI,

TA = TJ = -40NC to +125NC, unless otherwise noted. Typical values are at TA = +25NC.)

PARAMETER

Skip Mode Output Voltage

Load Regulation

Line Regulation

BST Input Current

SYMBOL

VOUT_SKIP

IBST_ON

IBST_OFF

LX Current Limit

ILX

LX Rise Time

Skip Mode Current Threshold

ISKIP_TH

Spread Spectrum

High-Side Switch

On-Resistance

RON_H

High-Side Switch Leakage

Current

Low-Side Switch

On-Resistance

RON_L

Low-Side Switch

Leakage Current

TRANSCONDUCTANCE AMPLIFIER (COMP)

FB Input Current

IFB

FB Regulation Voltage

VFB

FB Line Regulation

Transconductance

(from FB to COMP)

Minimum On-Time

Maximum Duty Cycle

OSCILLATOR FREQUENCY

DVLINE

gm

tON_MIN

DCMAX

Oscillator Frequency

EXTERNAL CLOCK INPUT (FSYNC)

External Input Clock

Acquisition time

tFSYNC

External Input Clock

Frequency

External Input Clock High

Threshold

VFSYNC_HI

CONDITIONS

No load, VFB = VBIAS, skip mode (Note 3)

VFB = VBIAS, 300mA < ILOAD < 2.5A

VFB = VBIAS, 6V < VSUPSW < 36V

High-side MOSFET on, VBST - VLX = 5V

High-side MOSFET off, VBST - VLX = 5V,

TA = +25°C

Peak inductor current

RFOSC = 12kW

TA = +25°C

Spread spectrum enabled

ILX = 1A, VBIAS = 5V

High-side MOSFET off, VSUP = 36V,

VLX = 0V, TA = +25NC

ILX = 0.2A, VBIAS = 5V

VLX = 36V, TA = +25NC

FB connected to an external resistor

divider, 6V < VSUPSW < 36V (Note 4)

6V < VSUPSW < 36V

VFB = 1V, VBIAS = 5V

(Note 3)

RFOSC = 73.2kI

RFOSC = 12kI

RFOSC = 12kI (Note 5)

VFSYNC rising

MIN TYP MAX

4.9

5

5.15

0.5

0.02

1

1.5

2

5

3

3.75 4.5

4

150 300 400

fOSC Q6%

100 220

1

3

1.5

3

1

20

100

0.99 1.0 1.015

0.02

700

80

98

340 400 460

2.0

2.2

2.4

1

1.8

2.6

1.4

UNITS

V

%

%/V

mA

FA

A

ns

mA

mI

FA

I

FA

nA

V

%/V

FS

ns

%

kHz

MHz

Cycles

Hz

V

Maxim Integrated

  3

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