CDH2D09 查看數據表（PDF） - Maxim Integrated

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CDH2D09

PMIC with Integrated Charger and Smart Power Selector for Handheld Devices

Maxim Integrated 

PMIC with Integrated Charger and

Smart Power Selector for Handheld Devices

ELECTRICAL CHARACTERISTICS (continued)

(DC, USB, BVSET, UOK, DOK, LX_ unconnected; VTHM = VL/2, VPG_ = VAGND = 0V, VBAT = 4V, CEN = low, USUS = low, EN = high,

VPEN1 = VPEN2 = 3.3V, VPWM = 0V, COUT4 = 1µF, COUT5 = 1µF, CSYS = 10µF, PV1 = PV2 = PV3 = PV4 = PV5 = SYS, RDISET = 3kΩ,

RCISET = 3kΩ, CVL = 0.1µF, CCT = 0.15µF, CBP = 0.01µF, VFB1 = 1.1V, VFB2 = 1.1V, VFB3 = 1.1V, TA = -40°C to +85°C, unless other-

wise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

Skip Mode Transition Current

(Note 10)

n-Channel Zero-Crossing

Threshold

Maximum Duty Cycle

Minimum Duty Cycle

PWM mode

Internal Oscillator Frequency

Internal Discharge Resistance in

Shutdown

EN = low, resistance from LX1 to PG1

REG2—SYNCHRONOUS STEP-DOWN CONVERTER

Input Voltage

Maximum Output Current

FB2 Voltage

PV2 supplied from SYS

L = 4.7µH, RL = 0.13Ω (Note 7)

(Note 8)

Adjustable Output Voltage Range

FB2 Leakage Current

Load Regulation

VFB2 = 1.012V

PWM mode

TA = +25°C

TA = +85°C

Line Regulation

p-Channel On-Resistance

n-Channel On-Resistance

p-Channel Current-Limit

Threshold

PWM mode (Note 9)

VPV2 = 4V, ILX2 = 180mA

VPV2 = 4V, ILX2 = 180mA

Skip Mode Transition Current

(Note 10)

n-Channel Zero-Crossing

Threshold

Maximum Duty Cycle

Minimum Duty Cycle

Internal Oscillator Frequency

PWM mode

Internal Discharge Resistance in

Shutdown

EN = low, resistance from LX2 to PG2

REG3—SYNCHRONOUS STEP-DOWN CONVERTER

Input Voltage

PV3 supplied from SYS

Maximum Output Current

L = 4.7µH, RL = 0.13Ω (Note 7)

FB3 Voltage

(Note 8)

Adjustable Output Voltage Range

FB3 Leakage Current

Load Regulation

VFB2 = 1.012V

PWM mode

TA = +25°C

TA = +85°C

MIN TYP MAX UNITS

60

mA

10

mA

100

%

12.5

%

1.8

2.0

2.2

MHz

0.5

1.0

2.0

kΩ

425

0.997

1

-50

VSYS

1.012

-5

-50

4.4

1

200

150

1.028

VSYS

+50

400

265

0.555 0.615 0.675

60

10

100

12.5

1.8

2.0

2.2

0.5

1.0

2.0

V

mA

V

V

nA

%/A

%/D

mΩ

mΩ

A

mA

mA

%

%

MHz

kΩ

VSYS

V

425

mA

0.997 1.012 1.028

V

1

VSYS

V

-50

-5

+50

nA

-50

4.4

%/A

_______________________________________________________________________________________ 9

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