MAX16962 datasheet(4/13 Pages) MAXIM

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MAX16962

4A, 2.2MHz, Synchronous Step-Down

DC-DC Converter

Maxim Integrated

Typical Operating Characteristics

(VPV = VPV1 = 5V, VEN = 5V, TA = +25°C, unless otherwise noted.)

ELECTRICAL CHARACTERISTICS (continued)

(VPV = VPV1 = VPV2 = 5V, VEN = 5V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +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

Pulldown Resistor

100

200

DIGITAL OUTPUT (SYNC AS OUTPUT)

Output Voltage Low

VOL

ISINK = 3mA

0.4

Output Voltage High

VOH

VPV = 5V, ISOURCE = 3mA

4.2

EFFICIENCY vs. LOAD CURRENT (SKIP)

LOAD CURRENT (A)

0.1

0.01

0.001

100

010

VIN = 5V

VOUT = 1.2V

VOUT = 1.8V

VOUT = 3.3V

fSW = 2.2MHz, SKIP MODE

EFFICIENCY vs. LOAD CURRENT (PWM)

LOAD CURRENT (A)

1.0

0.1

0.01

0.001

100

VOUT = 1.2V

VOUT = 3.3V

VOUT = 1.8V

fSW = 2.2MHz, PWM MODE

VIN = 5V

EFFICIENCY vs. LOAD CURRENT (PWM)

LOAD CURRENT (A)

1.0

0.1

0.01

0.001

100

VOUT = 1.2V

VOUT = 2.5V

VOUT = 1.8V

fSW = 2.2MHz, PWM MODE

VIN = 3.3V

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