MAX1637EEE+ by Analog Devices

Miniature, Low-Voltage, Precision Step-Down Controller

Status: Active
Series: MAX1637
RoHS: Unknown
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The MAX1637 synchronous, buck, switch-mode power-supply controller generates the CPU supply voltage in battery-powered systems. The MAX1637 is a stripped-down version of the MAX1636 in a smaller 16-pin QSOP package. The MAX1637 is intended to be powered separately from the battery by an external bias supply (typically the +5V system supply) in applications where the battery exceeds 5.5V. The MAX1637 achieves excellent DC and AC output voltage accuracy. This device can operate from a low input voltage (3.15V) and delivers the excellent load-transient response needed by upcoming generations of dynamic-clock CPUs. Using synchronous rectification, the MAX1637 achieves up to 95% efficiency. Efficiency is greater than 80% over a 1000:1 load-current range, which extends battery life in system-suspend or standby mode. Excellent dynamic response corrects output load transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Powerful 1A on-board gate drivers ensure fast external N-channel MOSFET switching. The MAX1637 features a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode. This reduces noise and RF interference in sensitive mobile-communications and pen-entry applications. Asserting the SKIP-bar pin enables fixed-frequency mode, for lowest noise under all load conditions. For a stand-alone device that includes a +5V VL linear regulator and low-dropout capabilities, refer to the MAX1636 data sheet.

Prices starting from US$6.65


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$7.78
64
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Logo for element14 element14 US$8.31
64
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Features

±2% DC Accuracy
0.1% (typ) DC Load Regulation
Adjustable Switching Frequency to 350kHz
Idle Mode™ Pulse-Skipping Operation
1.10V to 5.5V Adjustable Output Voltage
3.15V Minimum IC Supply Voltage (at VCC pin)
Internal Digital Soft-Start
1.1V ±2% Reference Output
1µA Total Shutdown Current
Output Overvoltage Crowbar Protection
Output Undervoltage Shutdown (foldback)
Tiny 16-Pin QSOP Package

Specifications

VIN (V) (min) 6
VIN (V) (max) 26
VOUT1 (V) (min) 1.1
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.1
Switch Type External
Preset VOUT (V) 5
Output Adjust. Method Resistor
Synchronous Switching? Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 350
Package/Pins QSOP/16
BudgetaryPrice (See Notes) 5.09


MAX1637EEE+ Semiconductors - ICs by Analog Devices

DC/DC CTRL SYNC BUCK 300KHZ QSOP-16

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 3.15V
Supply Voltage Max 5.5V
No. of Outputs 1 Output
Duty Cycle (%) 96%
Controller IC Case Style QSOP
No. of Pins 16Pins
Switching Frequency 300kHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Dc/Dc Ctrl, Sync Buck, 300Khz, Qsop-16 | Newark Electronics
DC/DC CTRL, SYNC BUCK, 300KHZ, QSOP-16 | element14

Frequently Asked Questions

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Is the MAX1637EEE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX1637EEE+ .

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