MAX17113 datasheet(4/30 Pages) MAXIM

4 / 30 page

Low-Cost, Multiple-Output

Power Supply for LCD TVs

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ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VVIN = VIN2 = 12V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

STEP-UP REGULATOR

Output-Voltage Range

VVIN

Minimum tON

100

TA = +25°C

1.2375

1.250

1.2625

FB1 Regulation Voltage

FB1 = COMP,

CCOMP = 1mF

0°C < TA < +85°C

1.225

1.275

FB1 Fault Threshold

FB rising, hysteresis = 12mV

0.96

1.0

1.06

FB1 UVLO Threshold

0.05

0.125

0.2

FB1 Load Regulation

0A < ILOAD < full

0.5

FB1 Line Regulation

10.8V < VIN < 13.2V

0.08

0.15

%/V

FB1 Input Bias Current

VFB1 = 1.25V

125

300

FB1 Transconductance

ΔI = ±2.5μA at COMP, FB1 = COMP

125

320

600

μS

FB1 Voltage Gain

FB1 to COMP

1400

V/V

LX1 Leakage Current

VFB1 = 1.5V, VLX1 = 20V

μA

LX1 Current Limit

VFB1 = 1.1V, duty cycle = 25%

2.8

3.3

3.8

Current-Sense Transresistance

0.1

0.2

0.30

V/A

LX1 On-Resistance

200

Soft-Start Period

Soft-Start Step Size

ILIM/

128

POSITIVE AND NEGATIVE CHARGE-PUMP REGULATORS

0°C < TA < +85°C

1.23

1.25

1.27

FBP Regulation Voltage

TA = +25°C

1.2375

1.2625

FBP Line-Regulation Error

11V < VSUP < 16V, not in dropout

0.01

0.2

%/V

FBP Input Bias Current

VFBP = 1.5V, TA = +25°C

-50

+50

DRVP p-Channel MOSFET

On-Resistance

2.0

4.0

DRVP n-Channel MOSFET

On-Resistance

0.8

1.5

FBP Fault Trip Level

Falling edge

0.96

1.02

1.08

Positive Charge-Pump Soft-Start Period

3.3

Positive Charge-Pump

Soft-Start Step Size

VREF/

128

0°C < TA < +85°C

0.985

1.000

1.015

FBN Regulation Voltage

VREF – VFBN

TA = +25°C

0.99

1.00

1.01

FBN Input Bias Current

VFBN = 250mV, TA = +25°C

-50

+50

FBN Line Regulation Error

11V < VSUP < 16V, not in dropout

0.01

0.2

%/V

DRVN p-Channel On-Resistance

2.0

4.0

DRVN n-Channel On-Resistance

0.8

1.5

FBN Fault Trip Level

Rising edge

450

500

550

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