Rainbow Electronics MAX8649 - Manual (Page 5)

MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
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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)
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 60 %
Minimum On- and Off-Time 30 40 50 ns
OUT Discharge Resistance During shutdown or UVLO, from SNS+ to PGND 650 Ω
SNS+, SNS- Input Impedance 400 600 850 k Ω
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 = 00 default 18.9 26.0 38.0
SYNC = 1X default 14.2 19.2 28.5 SYNC Capture Range
SYNC = 01 default 9.5 13.0 19.0
MHz
SYNC Pulse Width 13 ns
PROTECTION CIRCUITS
Thermal-Shutdown Hysteresis 20 °C
Thermal Shutdown +160 °C
Note 2: All devices are 100% production tested at T A = +25°C. Limits over the operating temperature range are guaranteed by
design.