Datasheet

MAX16962
4A, 2.2MHz, Synchronous Step-Down
DC-DC Converter
4Maxim Integrated
Typical Operating Characteristics
(V
PV
= V
PV1
= 5V, V
EN
= 5V, T
A
= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(V
PV
= V
PV1
= V
PV2
= 5V, V
EN
= 5V, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
Note 2: All limits are 100% production tested at +25°C. Limits over temperature are guaranteed by design.
Note 3: Calculated value based on an assumed inductor current ripple of 30%.
Note 4: For SYNC frequency outside (1.7, 2.4) MHz, contact factory.
Note 5: 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.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Hysteresis 50 mV
Pulldown Resistor 50 100 200 kI
DIGITAL OUTPUT (SYNC AS OUTPUT)
Output Voltage Low VOL ISINK = 3mA 0.4 V
Output Voltage High VOH VPV = 5V, ISOURCE = 3mA 4.2 V
EFFICIENCY vs. LOAD CURRENT (SKIP)
MAX16962 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
10.10.010.001
10
20
30
40
50
60
70
80
90
100
0
01
0
V
IN
= 5V
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 3.3V
f
SW
= 2.2MHz, SKIP MODE
EFFICIENCY vs. LOAD CURRENT (PWM)
MAX16962 toc02
LOAD CURRENT (A)
1.00.10.010.001 10
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
V
OUT
= 1.2V
V
OUT
= 3.3V
V
OUT
= 1.8V
f
SW
= 2.2MHz, PWM MODE
V
IN
= 5V
EFFICIENCY vs. LOAD CURRENT (PWM)
MAX16962 toc03
LOAD CURRENT (A)
1.00.10.010.001 10
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
V
OUT
= 1.2V
V
OUT
= 2.5V
V
OUT
= 1.8V
f
SW
= 2.2MHz, PWM MODE
V
IN
= 3.3V