Datasheet

MAX8566
High-Efficiency, 10A, PWM
Internal-Switch Step-Down Regulator
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
DD
= V
EN
= 3.3V, V
FB
= 0.5V, V
SYNC
= 0V, T
A
= 0°C to +85°C, typical values are at T
A
= +25°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
FB Input Bias Current V
FB
= 0.7V, T
A
= +25°C 40 200 nA
REFIN Input Bias Current V
REFIN
= 0.6V, T
A
= +25°C 70 250 nA
V
DD
= 2.3V to 2.6V 0
V
DD
-
1.65
REFIN Common-Mode Range
V
DD
= 2.6V to 3.6V 0
V
DD
-
1.7
V
LX (ALL PINS COMBINED)
V
IN
= V
BST
- V
LX
= 3.3V 8 16
On-Resistance, High Side I
LX
= -2A
V
IN
= V
BST
- V
LX
= 2.5V 12 20
mΩ
V
IN
= V
LSS
= 3.3V 8 16
On-Resistance, Low Side I
LX
= 2A
V
IN
= V
LSS
= 2.5V 12 20
mΩ
Current-Limit Threshold V
IN
= 2.5V or 3.3V, high side 12 15 20 A
V
LX
= 3.6V 5 200
Leakage Current
V
IN
= 3.6V, V
EN
= 0V,
T
A
= +25°C
V
LX
= 0V -200 +5
µA
R
FREQ
= 50kΩ 0.8 1 1.2
Switching Frequency V
IN
= 2.5V or 3.3V
R
FREQ
= 23.3kΩ 1.7 2 2.3
MHz
Minimum Off-Time V
IN
= 2.5V or 3.3V 50 75 ns
Maximum Duty Cycle R
FREQ
= 50kΩ, V
IN
= 2.5V or 3.3V 87 95 %
Minimum Duty Cycle R
FREQ
= 50kΩ, V
IN
= 2.5V or 3.3V 10 %
RMS LX Output Current 10 A
ENABLE/SOFT-START
EN Input Logic-Low Threshold 0.4 0.7 V
EN Input Logic-High Threshold 1.65 1.90 V
Monotonic start 30 45
MODE Input Threshold V
DD
= 2.3V to 3.6V
No monotonic start 20
% of
V
DD
EN, MODE Input Current V
EN
= V
MODE
= 0V or 3.6V, V
DD
= 3.6V, T
A
= +25°C 0.01 1 µA
Soft-Start Charging Current V
SS
= 0.3V 5 8 11 µA
SS Discharge Resistance 8kΩ