Rainbow Electronics MAX8649 - Manual (Page 27)

MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
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REGISTER NAME RAMP
Address 0x06h
Reset Value 0x01h
Type Read
Special Features Reset upon V
DD
or IN1 UVLO
BIT NAME DESCRIPTION
DEFAULT
VALUE
B7 (MSB)
B6
B5
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.
0
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.
0
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.
0
B0 (LSB) — Reserve for future use. 1
Table 9. I 2 C Register: RAMP
This register controls of ramp-up/down function.