MAX8649(2009) Ver la hoja de datos (PDF) - Maxim Integrated

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componentes Descripción

Fabricante

MAX8649
(Rev.:2009)

1.8A Step-Down Regulator with Remote Sense in 2mm x 2mm WLP

Maxim Integrated 

1.8A Step-Down Regulator with Differential

Remote Sense in 2mm x 2mm WLP

ELECTRICAL CHARACTERISTICS (continued)

(VIN1 = VIN2 = 3.6V, VAGND = VPGND = 0V, VDD = 1.8V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA =

+25°C.) (Note 2)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Minimum Duty Cycle

Forced PWM mode only, minimum duty cycle in

(OPERATION_MODE_ = 1) = 0%

16

%

Maximum Duty Cycle

Minimum On- and Off-Time

OUT Discharge Resistance

SNS+, SNS- Input Impedance

During shutdown or UVLO, from SNS+ to PGND

60

%

30

40

50

ns

650

Ω

400

600

850

kΩ

Time Delay from PWM

to Power-Save Mode

Time required for error amplifier to stabilize before

switching mode

70

µs

Time Delay from Power-Save

Mode to PWM

Time required for error amplifier to stabilize before

switching mode

140

µs

SYNCHRONIZATION (SYNC)

SYNC Capture Range

SYNC Pulse Width

SYNC = 00 default

SYNC = 1X default

SYNC = 01 default

18.9 26.0 38.0

14.2 19.2 28.5 MHz

9.5

13.0 19.0

13

ns

PROTECTION CIRCUITS

Thermal-Shutdown Hysteresis

20

°C

Thermal Shutdown

+160

°C

Note 2: All devices are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by

design.

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