MAX1644EAE+T

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> Semiconductors - ICs

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Series Information for MAX1644EAE+T - Maxim Integrated

Description

DC/DC CONV SYNC BUCK 350KHZ SSOP-16
The MAX1644 constant-off-time, PWM step-down DC- DC converter is ideal for use in applications such as PC cards, CPU daughter cards, and desktop computer bus-termination boards. The device features internal synchronous rectification for high efficiency and reduced component count. It requires no external Schottky diode. The internal 0.10Ω PMOS power switch and 0.10Ω NMOS synchronous-rectifier switch easily deliver continuous load currents up to 2A. The MAX1644 produces a preset +3.3V or +2.5V output voltage or an adjustable output from +1.1V to VIN. It achieves efficiencies as high as 95%. The MAX1644 uses a unique current-mode, constant- off-time, PWM control scheme, which includes an Idle Mode™ to maintain high efficiency during light-load operation. The programmable constant-off-time archi- tecture sets switching frequencies up to 350kHz, allow- ing the user to optimize performance trade-offs between efficiency, output switching noise, component size, and cost. The device also features an adjustable soft-start to limit surge currents during start-up, a 100% duty cycle mode for low-dropout operation, and a low- power shutdown mode that disconnects the input from the output and reduces supply current below 1µA. The MAX1644 is available in a 16-pin SSOP package.

Specifications

Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
3V
Input Voltage Max:
5.5V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
SSOP
No. of Pins:
16Pins
Output Current:
2A
Output Voltage Min:
2.5V
Output Voltage Max:
3.3V
Switching Frequency:
350kHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet America

Conv DC-DC Single Step Down 3V to 5.5V 16-Pin SSOP T/R

Avnet America product

Avnet Europe

Conv DC-DC Single Step Down 3V to 5.5V 16-Pin SSOP T/R

Avnet Europe product

Avnet Asia

Conv DC-DC Single Step Down 3V to 5.5V 16-Pin SSOP T/R

Avnet Asia product

Future Electronics

MAX1644 Series 5.5 V 2 A 350 kHz Buck SMT Switching Regulator - SSOP-16