MAX8662ETM(2007) Просмотр технического описания (PDF) - Maxim Integrated

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MAX8662ETM
(Rev.:2007)

Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

Maxim Integrated 

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

ELECTRICAL CHARACTERISTICS (Output Regulator) (continued)

(VSYS_ = VPV_ = VIN45 = VIN67 = 4.0V, VBRT = 1.25V, circuit of Figure 1, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

FB Regulation Accuracy

From VFB1 = 0.98V, IOUT1 = 0 to 1200mA,

VOUT1 = 0.98V to 3.3V

-3

+3

%

FB1 Input Leakage Current

0.01 0.10 µA

pMOS On-Resistance

nMOS On-Resistance

pMOS Current Limit

ILX1 = 100mA

ILX1 = 100mA

VPV1 = 3.3V

VPV1 = 2.6V

VPV1 = 3.3V

VPV1 = 2.6V

0.12 0.24

Ω

0.15

0.2 0.4

Ω

0.3

1.4 1.8 2.2

A

Skip Mode Transition Current

90

mA

nMOS Zero-Cross Current

25

mA

LX Leakage

BUCK REGULATOR 2

VEN1 = 0V, VSYS = 5.5V,

TA = +25°C

VLX1 = VPV1 = 5.5V

VLX1 = 0V, VPV1 = 5.5V

0.01

-5.00 -0.01

1.00

µA

Supply Current

Output Voltage Range

ISYS + IPV2, no load, not

including SYS bias current

VPWM = 0V

VPWM = 5V

Guaranteed by FB accuracy

16

35

µA

2.1

mA

0.98

3.30

V

Maximum Output Current

900

mA

FB Regulation Accuracy

From VFB2 = 0.98V, IOUT2 = 0 to 600mA,

VOUT2 = 0.98V to 3.3V

-3

+3

%

FB2 Input Leakage Current

0.01 0.10 µA

pMOS On-Resistance

nMOS On- Resistance

pMOS Current Limit

ILX2 = 100mA

ILX2 = 100mA

VPV2 = 3.3V

VPV2 = 2.6V

VPV2 = 3.3V

VPV2 = 2.6V

0.2 0.4

Ω

0.3

0.2 0.4

Ω

0.3

1.07 1.30 1.55

A

Skip Mode Transition Current

90

mA

nMOS Zero-Cross Current

25

mA

LX Leakage

VEN2 = 0V, VSYS = 5.5V,

TA = +25°C

VLX2 = VPV2 = 5.5V

VLX2 = 0V, VPV2 = 5.5V

0.01

-5.00 -0.01

1.00

µA

BOOST REGULATOR FOR LED DRIVER

Supply Current

At SYS, no load, not

including SYS bias current

Switching

1

mA

Output Range

Minimum Duty Cycle

Maximum Duty Cycle

CS Regulation Voltage

OVP Regulation Voltage

OVP Sink Current

VOUT3

DMIN

DMAX

VCS

Duty = 90%, ILX3 = 0mA

VSYS

30

V

10

%

90

92

%

0.29 0.32 0.35

V

1.225 1.250 1.275 V

19.2 20.0 20.8 µA

OVP Soft-Start Period

Time for IOVP to ramp from 0 to 20µA

1.25

ms

_______________________________________________________________________________________ 5

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