Manual

MAX8649

1.8A Step-Down Regulator with Differential

Remote Sense in 2mm x 2mm WLP

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Address 0x06h

Reset Value 0x01h

Type Read

Special Features Reset upon V

or IN1 UVLO

BIT NAME DESCRIPTION

DEFAULT

VALUE

B7 (MSB)

RAMP[2:0]

Control the RAMP Timing

000 = 32mV/µs

001 = 16mV/µs

010 = 8mV/µs

011 = 4mV/µs

100 = 2mV/µs

101 = 1mV/µs

110 = 0.5mV/µs

111 = 0.25mV/µs

000

B4 FORCE_HYS

Only Valid When Converter is Operating in OPERATION_MODE 0

0 = Automatically change between power-save mode and PWM mode,

depending on load current.

1 = Converter always operates in power-save mode regardless of load

current as long as OPERATION_MODE = 0. If OPERATION_MODE =

1, this setting is ignored.

B3 FORCE_OSC

Force Oscillator While Running in Hysteretic Mode

0 = Internal oscillator is disabled in power save when operating in

hysteretic mode.

1 = Internal oscillator is enabled in power save even when operating in

hysteretic mode.

B2 — Reserved for future use. 0

B1 RAMP_DOWN

Active Ramp-Down Control for Power-Save Mode

0 = Active ramp disabled for power-save mode.

1 = During ramp-down, the error crossing detector is disabled allowing

negative current to flow thought the nMOS device.

B0 (LSB) — Reserve for future use. 1

Table 9. I

C Register: RAMP

This register controls of ramp-up/down function.