MAX17435 查看數據表（PDF） - Maxim Integrated

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MAX17435

High-Frequency, Low-Cost SMBus Chargers

Maxim Integrated 

High-Frequency,

Low-Cost SMBus Chargers

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, no load on LDO, VDCIN = VCSSP = VCSSN = 19V, VLX = 0V, VBST - VLX = 5V, VBATT = VCSIP = VCSIN = 16.8V,

TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX UNITS

LOGIC LEVELS

SDA/SCL Input Low Voltage

0.8

V

SDA/SCL Input High Voltage

2.1

V

SDA/SCL Input Bias Current

-1

FA

SWITCHING REGULATOR

DHI Off-Time K Factor

VDCIN = 19V, VBATT = 10V, MAX17435

55

VDCIN = 19V, VBATT = 10V, MAX17435

93

67

ns/V

107

Cycle-by-Cycle Current-Limit

Sense Voltage

VCSIP - VCSIN

120

130

mV

DHI Resistance High

DHI Resistance Low

DLO Resistance High

DLO Resistance Low

ADAPTER DETECTION

IDHI = 10mA

IDHI = -10mA

IDLO = 10mA

IDLO = -10mA

3

I

1.6

I

6

I

6

I

Adapter Absence Detect

Threshold

VDCIN - VBATT, VDCIN falling

50

200

mV

Adapter Detect Threshold

VDCIN - VBATT, VDCIN rising

270

600

mV

CHARGE-PUMP MOSFET DRIVER

PDSL Gate-Driver Source Current

VPDSL - VDCIN = 3V, VDCIN = 19V

40

FA

PDSL Gate-Driver

Output Voltage High

VDCIN = 19V

VDCIN

+ 5.3

V

ADAPTER OVERVOLTAGE PROTECTION

ACOVP Threshold

Rising

2.04

2.1

V

PDSL SWITCH CONTROL

PDSL Turn-Off Resistance

SMBus TIMING SPECIFICATIONS

SMBus Frequency

fSMB

Bus Free Time

tBUF

START Condition Hold Time

from SCL

tHD:STA

START Condition Setup Time

from SCL

tSU:STA

STOP Condition Setup Time

from SCL

tSU:STO

4

kI

10

100

kHz

4.7

Fs

4

Fs

4.7

Fs

4

Fs

8   _______________________________________________________________________________________

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