Datasheet
MAX8566
High-Efficiency, 10A, PWM
Internal-Switch Step-Down Regulator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(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.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
EN/SS, EN, IN, SYNC, V
DD
,
LSS, PWRGD to GND ..........-0.3V to +4V (4.5V nonswitching)
SYNCOUT, SS, COMP, FB, REFIN,
FREQ to GND .........................................-0.3V to (V
DD
+ 0.3V)
LX Current (Note 1) .................................................-12A to +12A
BST to LX .................................-0.3V to +4V (4.5V nonswitching)
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T
A
= +85°C)
TQFN (derate 33.3mW/°C above +70°C) ..................2666.7W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
IN/V
DD
IN and V
DD
Voltage Range 2.3 3.6 V
LSS Voltage Range 2.3 3.6 V
Quiescent current, V
FB
= 0.7V 0.7 2.2
IN Supply Current
f
S
= 1MHz, no load 14
mA
Quiescent current, V
FB
= 0.7V 1.8 4
V
DD
Supply Current
f
S
= 1MHz, V
LSS
= V
DD
16
mA
T
A
= +25°C 50
Total Shutdown Current into IN
and V
DD
V
IN
= V
DD
= V
LSS
= (V
BST
- V
LX
) =
3.6V, V
EN
= 0V
T
A
= 0°C to +85°C 3
µA
V
DD
rising 2.0 2.2
V
DD
Undervoltage-Lockout
Threshold
LX starts/stops switching, 2µs
deglitch
V
DD
falling 1.72 1.90
V
BST
T
A
= +25°C 10
Shutdown Supply Current
V
IN
= V
DD
= V
BST
= 3.6V, V
LX
=
3.6V or 0V, V
EN
= 0V
T
A
= 0°C to +85°C 0.05
µA
PWM COMPARATOR
Comparator Propagation Delay 10mV overdrive 20 ns
COMP
Clamp Voltage, High V
IN
= 2.3V to 3.6V, V
FB
= 0.7V 1.80 2.0 2.15 V
Slew Rate 0.75 1.4 V/µs
Shutdown Resistance From COMP to GND, V
EN
= 0V 30 100 Ω
ERROR AMPLIFIER
FB Regulation Voltage V
COMP
= 1V to 2V, V
DD
= 2.5V and 3.3V 0.594 0.6 0.606 V
V
DD
= 2.3V to 2.6V 0
V
DD
-
1.65
Error-Amplifier Common-Mode
Input Range
V
DD
= 2.6V to 3.6V 0
V
DD
-
1.7
V
Error-Amplifier Maximum Output
Current
0.8 mA
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed
the IC’s package power-dissipation limits.