MAX17075(2008) 查看數據表（PDF） - Maxim Integrated

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MAX17075
(Rev.:2008)

Boost Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp

Maxim Integrated 

Boost Regulator with Integrated Charge Pumps,

Switch Control, and High-Current Op Amp

ELECTRICAL CHARACTERISTICS (continued)

(VVCC = +5V, Circuit of Figure 1, VAVDD = VSUP = +13V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

LX Current Limit

LX On-Resistance

LX Leakage Current

Current-Sense Transresistance

Soft-Start Period

POSITIVE CHARGE-PUMP REGULATOR

VSUP Input Supply Range

VSUP Overvoltage Threshold

Operating Frequency

FBP Regulation Voltage

FBP Line Regulation Error

FBP Input Bias Current

DRVP Current Limit

DRVP PCH On-Resistance

DRVP NCH On-Resistance

FBP Fault Trip Level

CONDITIONS

VFB = 1.1V, duty cycle = 75%

ILX = 200mA

VLX = 19V, TA = +25°C

7-bit current ramp

VSUP = rising, hysteresis = 200mV

VSUP = 12V to 18V, VGON = 30V

VFBP = 1.5V, TA = +25°C

Not in dropout

Falling edge

MIN TYP MAX UNITS

2.5

3.0

3.5

A

0.16 0.25

10

20

μA

0.1

0.2

0.3

V/A

14

ms

6

18

V

19

20

21

V

0.5 x

Hz

fOSC

-1.5% 1.250 +1.5%

V

0.2

%/V

-50

+50

nA

400

mA

4

6

1.5

3

0.96

1

1.04

V

Positive Charge-Pump Soft-Start Period

7-bit voltage ramp with filtering to prevent

high peak currents

3

5

ms

NEGATIVE CHARGE-PUMP REGULATOR

VSUP Input Supply Range

Operating Frequency

FBN Regulation Voltage (VREF - VFBN)

VREF - VFBN = 1V

6

18

V

0.5 x

Hz

fOSC

-1.5%

1 +1.5%

V

FBN Input Bias Current

VFBN = 0, TA = +25°C

-50

+50

nA

FBN Line Regulation Error

DRVN PCH On-Resistance

DRVN NCH On-Resistance

DRVN Current Limit

FBN Fault Trip level

VSUP = 9V to 18V, VGOFF = -7V

Not in dropout

Rising edge

0.2

%/V

4

6

1.5

3

400

mA

450

mV

Negative Charge-Pump Soft-Start Period

7-bit voltage ramp with filtering to prevent

high peak currents

3

5

ms

POSITIVE GATE DRIVER TIMING AND CONTROL SWITCHES

CTL Input Low Voltage

0.6

V

CTL Input High Voltage

CTL Input Current

CTL-to-COM Rising Propagation Delay

SRC Input Voltage Range

SRC-to-COM Switch On-Resistance

VCTL = 0 or VVCC, TA = +25°C

CLOAD = 100pF

VDEL = 1.5V, CTL = VCC

2

V

-1

+1

μA

250

ns

36

V

5

10

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