MAX1702B(2002) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1702B
(Rev.:2002)

Triple-Output Power-Management IC for Microprocessor-Based Systems

Maxim Integrated 

Triple-Output Power-Management IC for

Microprocessor-Based Systems

ELECTRICAL CHARACTERISTICS (continued)

(VINP1 = VINP2 = VINP3 = VIN = 3.6V, VLBI = 1.1V, VDBI = 1.35V, MR = ON2 = IN, PGM3 = GND, circuit of Figure 1, TA = -40°C to

+85°C unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

OUT1 Discharge Resistance

VOUT1 = 3.3V, VDBI = 1V

300

(Note 3)

Ω

SYNCHRONOUS BUCK REGULATOR 2 (REG2)

FB2 Regulation Voltage

2.6V ≤ VINP2 ≤ 5.5V, load = 0 to 400mA

FB Input Current

Error-Amp Transconductance

VFB = 0.7V

Dropout Voltage

Load = 400mA (Note 1)

P-Channel On-Resistance

N-Channel On-Resistance

ILX2 = 180mA

ILX2 = 180mA, VINP2 = 2.6V

ILX2 = 180mA

Current-Sense Transresistance

0.686

0.7

0.714

V

1

150

nA

150

250

350

µS

150

250

mV

0.25

0.4

Ω

0.3

0.5

0.2

0.35

Ω

0.40

0.47

0.54

V/A

P-Channel

Current-Limit Threshold

1.15

1.275

1.45

A

P-Channel Pulse-Skipping

Current Threshold

0.115 0.140 0.160

mA

N-Channel Zero-Crossing

Comparator

OUT2 Maximum Output Current 2.6V ≤ VINP2_ ≤ 5.5V (Note 2)

LX2 Leakage Current

VINP2 = 5.5V, LX2 = GND or INP2, VFB2 = 1V

LX2 Duty-Cycle Range

VINP_ = 4.2V

LX2 Discharge Resistance

VLX2 = VDBI = 1V

SYNCHRONOUS BUCK REGULATOR 3 (REG3)

PGM3 = GND, 3.6V ≤ VINP3_ ≤ 5.5V,

load = 0 to 800mA

OUT3 Voltage Accuracy

PGM3 = REF, 3.6V ≤ VINP3_ ≤ 5.5V,

load = 0 to 800mA

PGM3 = IN, 3.6V ≤ VINP3_ ≤ 5.5V,

load = 0 to 800mA

PGM3 = GND

OUT3 Input Resistance

PGM3 = REF

PGM3 = IN

PGM3 = GND

Error-Amp Transconductance

PGM3 = REF

PGM3 = IN

Dropout Voltage

Load = 800mA (Note 1)

P-Channel On-Resistance

N-Channel On-Resistance

ILX3 = 180mA

ILX3 = 180mA, VINP3 = 2.6V

ILX3 = 180mA

25

55

75

mA

0.4

A

-20

0.1

+20

µA

0

100

%

300

Ω

1.764

1.8

1.836

2.45

2.5

2.55

V

3.234

3.3

3.366

340

650

200

400

kΩ

160

320

105

175

245

75

125

175

µS

55

95

135

220

400

mV

0.25

0.4

Ω

0.3

0.5

0.2

0.35

Ω

_______________________________________________________________________________________ 3

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