MAX16904 datasheet(4/14 Pages) MAXIM

Part #	MAX16904

Description	2.1MHz, High-Voltage, 600mA Mini-Buck Converter

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 14 page

2.1MHz, High-Voltage,

600mA Mini-Buck Converter

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VSUP = +14V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SKIP-Mode Peak Current

ISKIP

350

mA

High-Side DMOS RDSON

RON,HS

VBIAS = 5V

400

800

m

Low-Side DMOS RDSON

RON,LS

250

450

m

DMOS Peak Current-Limit

Threshold

IMAX

0.85

1.05

1.22

A

Soft-Start Ramp Time

tSS

7

8

9

ms

LX Rise Time

tRISE,LX

5

ns

Minimum On-Time

tON

80

ns

PWM Switching Frequency

fSW

Internally generated

1.925

2.1

2.275

MHz

SYNC Input Frequency Range

fSYNC

1.8

2.6

MHz

Spread-Spectrum Range

SS

Spread-spectrum option only

+6

%

PGOOD

VTHR,PGD

VOUT rising

93

PGOOD Threshold

VTHF,PGD

VOUT falling

88

91

94

%

PGOOD Debounce

tDEB

10

μs

PGOOD High Leakage Current

ILEAK,PGD

TA = +25°C

1

μA

PGOOD Output Low Level

VOUT,PGD

Sinking 1mA

0.4

V

LOGIC LEVELS

VIH,EN

2.4

EN Level

VIL,EN

0.6

V

EN Input Current

IIN,EN

VEN = VSUP = +42V, TA = +25°C

1

μA

VIH,SYNC

1.4

SYNC Switching Threshold

VIL,SYNC

0.4

V

SYNC Internal Pulldown

RPD,SYNC

200

k

THERMAL PROTECTION

Thermal Shutdown

TSHDN

175

°C

Thermal Shutdown Hysteresis

TSHDN,HYS

15

°C

Note 2: When the typical minimum on-time of 80ns is violated, the device skips pulses.

Note 3: Guaranteed by design; not production tested.

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