MAX1557ETB+T by Analog Devices

16µA IQ, 1.2A PWM Step-Down DC-DC Converters

Status: Active
Series: MAX1557
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The MAX1556/MAX1556A/MAX1557 are low-operating-current (16µA), fixed-frequency step-down regulators. High efficiency, low-quiescent operating current, low dropout, and minimal (27µA) quiescent current in dropout make these converters ideal for powering portable devices from 1-cell Li-ion or 3-cell alkaline/NiMH batteries. The MAX1556 delivers up to 1.2A; has pin-selectable 1.8V, 2.5V, and 3.3V outputs; and is also adjustable. The MAX1557 delivers up to 600mA; has pin-selectable 1V, 1.3V, and 1.5V outputs; and is also adjustable. The MAX1556/MAX1556A/MAX1557 contain a low-on-resistance internal MOSFET switch and synchronous rectifier to maximize efficiency and dropout performance while minimizing external component count. A proprietary topology offers the benefits of a high fixed-frequency operation while still providing excellent efficiency at both light and full loads. A 1MHz PWM switching frequency keeps components small. Both devices also feature an adjustable soft-start to minimize battery transient loading. The MAX1556/MAX1556A/MAX1557 are available in a tiny 10-pin TDFN (3mm x 3mm) package.

Prices starting from US$2.63


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$2.65
1,430
Buy Now
Logo for element14 element14 US$2.95
1,430
Buy Now
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Features

Up to 97% Efficiency
95% Efficiency at 1mA Load Current
Low 16µA Quiescent Current
1MHz PWM Switching
Tiny 3.3µH Inductor
Selectable 3.3V, 2.5V, 1.8V, 1.5V, 1.3V, 1.2V, 1.0V, and Adjustable Output
1.2A Guaranteed Output Current (MAX1556/MAX1556A)
Voltage Positioning Optimizes Load-Transient Response
Low 27µA Quiescent Current in Dropout
Low 0.1µA Shutdown Current
No External Schottky Diode Required
Analog Soft-Start with Zero Overshoot Current
Small, 10-Pin, 3mm x 3mm TDFN Package

Specifications

VIN (V) (min) 2.6
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.75
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.6
Switch Type Internal
Preset VOUT (V) 1
Output Adjust. Method PresetResistor
Synchronous Switching? Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins TDFN/10
BudgetaryPrice (See Notes) 1.91


MAX1557ETB+T Semiconductors - ICs by Analog Devices

DC/DC CONV SYNC BUCK 1MHZ TDFN-10

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

Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 2.6V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case TDFN
No. of Pins 10Pins
Output Current 600mA
Output Voltage Min 1V
Output Voltage Max 1.5V
Switching Frequency 1MHz
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)

Alternative Descriptions

Dc/Dc Conv, Sync Buck, 1Mhz, Tdfn-10 | Newark Electronics
DC/DC CONV, SYNC BUCK, 1MHZ, TDFN-10 | element14

Frequently Asked Questions

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Is the MAX1557ETB+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1557ETB+T have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX1557ETB+T .

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