MAX8660 查看數據表（PDF） - Maxim Integrated

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MAX8660

High-Efficiency, Low-IQ, PMICs with Dynamic Voltage Management for Mobile Applications

Maxim Integrated 

High-Efficiency, Low-IQ, PMICs with Dynamic

Voltage Management for Mobile Applications

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VIN5 = VIN67 = VIN8 = 3.6V, Figure 3, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

p-Channel Current-Limit Threshold

n-Channel Zero-Crossing Threshold

ILIM3

n-Channel Negative Current Limit

Forced-PWM mode only

REG3 Maximum Output Current

V3 Bias Current

IOUT3 2.6V ≤ VPV3 ≤ 6V (Note 5)

LX3 Leakage Current

Soft-Start Ramp Rate

V3 Dynamic-Change Ramp Rate

EN34 to V3 Enable Time

Internal Off-Discharge Resistance

tPHLVTH3

VPV3 = 6V, LX3 = PG3 or

PV3, VEN34 = 0V

TA = +25°C

TA = +85°C

MAX8660/MAX8660A/MAX8661, RRAMP =

56kΩ to 1.4V

MAX8660B, RRAMP = 56kΩ to 1.15V

RRAMP = 56kΩ

MAX8660/MAX8660A/MAX8661, powering

up to 1.4V, Figure 6, RRAMP = 56kΩ

MAX8660B, powering up to 1.15V, Figure 6,

RRAMP = 56kΩ

Minimum Duty Cycle

Forced-PWM mode only, min duty cycle in

skip mode is 0%

Maximum Duty Cycle

REG4—SYNCHRONOUS STEP-DOWN DC-DC CONVERTER

V4 Output Voltage Accuracy

MAX8660/MAX8660A/MAX8661 REG4 default

output voltage, VPV4 = 3.6V, load = 200mA

V4

MAX8660B REG4 default output voltage,

VPV4 = 3.6V, load = 200mA

REG4 serial programmed from 0.9V to 1.8V,

load = 200mA (Note 6)

V4 Load Regulation

Load = 0 to 400mA

V4 Line Regulation

(Note 7)

p-Channel On-Resistance

n-Channel On-Resistance

p-Channel Current-Limit Threshold

n-Channel Zero-Crossing Threshold

RP4

RN4

ILIM4

n-Channel Negative Current Limit

Forced-PWM mode only

REG4 Maximum Output Current

V4 Bias Current

IOUT4 2.6V ≤ VPV4 ≤ 6V (Note 5)

LX4 Leakage Current

Soft-Start Ramp Rate

V4 Dynamic-Change Ramp Rate

VPV4 = 6V, LX4 = PG4 or

PV4, VEN34 = 0V

TA = +25°C

TA = +85°C

MAX8660/MAX8660A/MAX8661,

RRAMP = 56kΩ to 1.4V

MAX8660B, RRAMP = 56kΩ to 1.15V

RRAMP = 56kΩ

MIN

1.85

1.6

-2

1.379

1.133

-1.5

0.65

0.4

-2

TYP

2.15

25

-0.8

0.01

+0.03

0.24

8

6.7

10

400

400

550

16.7

100

1.400

1.150

-40

0.1

0.37

0.3

0.78

25

-975

0.01

±0.02

0.12

8

6.7

10

MAX

2.45

+2

1.421

1.167

+1.5

0.90

+2

UNITS

A

mA

A

A

µA

µA

mV/µs

mV/µs

µs

Ω

%

%

V

%

mV/A

%/V

Ω

Ω

A

mA

mA

A

µA

µA

mV/µs

mV/µs

7

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