Table 2. i, C register map, Table 3. i – Rainbow Electronics MAX8649 User Manual
Page 21: C register: mode0
MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
______________________________________________________________________________________
21
POINTER
REGISTER
POR
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
0x00
MODE0
0xB4
OPER
MODE
SYNC
MODE
OUT MODE0[5:0]
0x01
MODE1
0x1E
OPER
MODE
SYNC
MODE
OUT MODE1[5:0]
0x02
MODE2
0xB0
OPER
MODE
SYNC
MODE
OUT MODE2[5:0]
0x03
MODE3
0x9E
OPER
MODE
SYNC
MODE
OUT MODE3[5:0]
0x04
CONTROL
0xE0
EN_PD
VID0_PD
VID1_PD
—
—
—
—
—
0x05
SYNC
0x00
SYNC[1:0]
—
—
—
—
—
—
0x06
RAMP
0x01
RAMP[2:0]
FORC E _H Y S FORC
E _OS C —
RAM
P _D OWN —
0x08
CHIP_ID1
0x20
DIE TYPE[7:4]
DIE TYPE[3:0]
0x09
CHIP_ID2
0x0D
DASH[3:0]
MASK REV[3:0]
Table 2. I
2
C Register Map
REGISTER NAME
MODE0
Address
0x00h
Reset Value
0xB4h
Type
Read/write
Special Features
Reset upon V
DD
or IN1 UVLO
BIT
NAME
DESCRIPTION
DEFAULT
VALUE
B7 (MSB)
OPERATION_MODE0
DC-DC Step-Down Converter Operation Mode for MODE0
0 = D C - D C conver ter autom ati cal l y chang es b etw een hyster eti c m od e for
l i ght load condi ti ons and PWM mod e for m ed ium to heavy l oad cond i tions.
1 = DC-DC converter operates in forced-PWM mode.
1
B6
SYNC_MODE0
Disable/Enable Synchronization to External Clock
0 = DC-DC converter ignores the external SYNC input regardless of
operation mode.
1 = D C - D C conver ter synchr oni zes to exter nal S Y N C i np ut w hen avai l ab l e.
0
B5
B4
B3
B2
B1
B0 (LSB)
OUT_ MODE0 [5:0]
Output Voltage Selection for MODE0
000000 = 0.75V
000001 = 0.76V
110011 = 1.26V
110100 = 1.27V
110101 = 1.28V
111110 = 1.37V
111111 = 1.38V
110100
Table 3. I
2
C Register: MODE0
This register contains output voltage and operation mode control for MODE0, VID0 = GND, VID1 = GND.