MAX8660 Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

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

MIN TYP

PWM Switching Frequency

fSW

1.9

2.0

REG1—SYNCHRONOUS STEP-DOWN DC-DC CONVERTER (MAX8660, MAX8660A, MAX8660B only)

SET1 = IN, VPV1 = 4.2V, load = 600mA

3.250 3.300

V1 Voltage

Accuracy (MAX8860/MAX8860B)

V1

SET1 not connected, VPV1 = 3.6V,

load = 600mA

2.955 3.000

SET1 = AGND, VPV1 = 3.6V, load = 600mA

SET1 = IN, VPV1 = 4.2V, load = 600mA

2.807

2.463

2.850

2.500

V1 Voltage Accuracy (MAX8660A)

V1

SET1 not connected, VPV1 = 3.6V,

load = 600mA

1.970 2.000

V1 Load Regulation

V1 Line Regulation

SET1 Input Leakage Current

V1 Dropout Voltage

p-Channel On-Resistance

n-Channel On-Resistance

p-Channel Current-Limit

Threshold

RP1

RN1

ILIM1

SET1 = AGND, VPV1 = 3.6V, load = 600mA

Load = 0 to 1200mA

Load = 800mA (Notes 3, 4)

Load = 1200mA (Notes 3, 4)

1.773

1.5

1.800

-1.5

0.15

0.01

150

200

0.12

0.15

1.8

n-Channel Zero-Crossing

25

Threshold

n-Channel Negative Current Limit

REG1 Maximum Output Current

V1 Bias Current

LX1 Leakage Current

Soft-Start Ramp Rate

(MAX8660/MAX8860B)

IOUT1

Forced-PWM mode only

2.6V ≤ VPV1 ≤ 6V (Note 5)

VPV1 = 6V, LX1 =

PG1 or PV1,

VEN1 = 0V

TA = +25°C

TA = +85°C

To V1 = 3.3V (total ramp time is 450µs for

all V1 output voltages)

-975

1.2

5

-2

±0.03

±0.2

5

7

Soft-Start Ramp Rate

(MAX8660A)

To V1 = 2.5V (total ramp time is 450µs for

all V1 output voltages)

3

5

V5 to V1 Enable Time

tVMHVSH1 Figure 6

350

Internal Off-Discharge Resistance

650

Minimum Duty Cycle

Maximum Duty Cycle

Forced-PWM mode only, min duty cycle in

skip mode is 0%

16.7

100

MAX

2.1

3.350

3.045

2.893

2.538

2.030

1.827

2.2

+2

9

7

UNITS

MHz

V

V

%/A

%/V

µA

mV

Ω

Ω

A

mA

mA

A

µA

µA

mV/µs

mV/µs

µs

Ω

%

%

5

Share Link: