Manual

MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
_______________________________________________________________________________________ 3
PARAMETER CONDITIONS MIN TYP MAX UNITS
VID0, VID1, EN Logic Input
Pulldown Resistor
Controlled by I
2
C command:
VID0_PD = 1
VID1_PD = 1
EN_PD = 1
200 320 450 kΩ
I
2
C INTERFACE
SDA Output Low Voltage I
SDA
= 3mA 0.03 0.4 V
I
2
C Clock Frequency 400 kHz
Bus-Free Time Between START
and STOP
t
BUF
1.3 µs
Hold Time Repeated START
Condition
t
HD_STA
0.6 0.1 µs
SCL Low Period t
LOW
1.3 0.2 µs
SCL High Period t
HIGH
0.6 0.2 µs
Setup Time Repeated START
Condition
t
SU_STA
0.6 0.1 µs
SDA Hold Time t
HD_DAT
0 -0.01 µs
SDA Setup Time t
SU_DAT
0.1 0.05 µs
Setup Time for STOP Condition t
SU_STO
0.6 0.1 µs
STEP-DOWN DC-DC REGULATOR
OPERATION_MODE_ = 0, V
OUT
= 1.27V, no switching 54 70 µA
IN1 + IN2
Supply Current
OPERATION_MODE_ = 1, V
OUT
= 1.27V, f
sw
= 3.25MHz 9 mA
Minimum Output Capacitance
Required for Stability
V
OUT
= 0.75V to 1.38V,
I
OUT
= 0 to 1.8A
10 µF
OUT Voltage Range 10mV steps 0.750 1.380 V
Output Overvoltage Protection Rising, 50mV hysteresis (typ) 1.65 1.8 1.9 V
ELECTRICAL CHARACTERISTICS (continued)
(V
IN1
= V
IN2
= 3.6V, V
AGND
= V
PGND
= 0V, V
DD
= 1.8V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
=
+25°C.) (Note 2)