Specification	MAXM38643AEMB+T

Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	10-SMD Module
Supplier Device Package	10-eMGA (2.6x2.1)
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	1.8 V

MAXM38643 Series

Tiny, 1.8V to 5.5V Input, 330nA IQ, 600mA nanoPower Buck Module

Part	Package / Case	Voltage - Input (Min) [Min]	Mounting Type	Supplier Device Package	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices Inc./Maxim Integrated MAXM38643AEMB+	10-SMD Module	1.8 V	Surface Mount	10-eMGA (2.6x2.1)	5.5 V	85 °C	-40 C
Analog Devices Inc./Maxim Integrated MAXM38643AEMB+T	10-SMD Module	1.8 V	Surface Mount	10-eMGA (2.6x2.1)	5.5 V	85 °C	-40 C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.63
		10	$ 3.06
		100	$ 2.17
		500	$ 1.79
		1000	$ 1.67
	Digi-Reel®	1	$ 4.63
		10	$ 3.06
		100	$ 2.17
		500	$ 1.79
		1000	$ 1.67
	N/A	0	$ 4.91
	Tape & Reel (TR)	2500	$ 1.64

Description

General part information

MAXM38643 Series

The MAXM38643 is an ultra-low-IQ (330nA) buck module that steps down input voltages in the range of 1.8V to 5.5V to a wide range of output voltages between 0.7V to 3.3V (using a single resistor at the RSELpin). The output voltage is programmable upon startup using a single external resistor from the RSELpin to GND. Factory-preprogrammed fixed output voltage versions from 0.5V to 5V are also available that do not use the RSELpin to set the output voltage. In this case, the RSELpin in the module is left floating.The module offers robust performance features. To optimize efficiency and transient response across the load operation range, the module automatically switches between ultra-low-power mode (ULPM), low-power mode (LPM), and highpower mode (HPM) to better service the load, depending on the load current. The device overregulates in ULPM to improve efficiency and allow the output capacitor to handle the transient load currents. The device has 90% duty cycle limitation. An active discharge resistor pulls OUT to ground when the part is in shutdown.ApplicationsBluetooth®LE DevicesHearablesPortable Space-Constrained ProductsSingle Li+ and Coin Cell Battery ProductsUltra-Low-Power IoT, NB IoTWearablesWired, Wireless Products

Documents

Technical documentation and resources

MAXM38643: Tiny, 1.8V to 5.5V Input, 330nA IQ, 600mA nanoPower Buck Module Data Sheet (Rev.0)

Data Sheet