SMD Marking Code - 644

644

Total Parts	4/4
Manufacturers	Ricoh Co., Ltd, Torex Semiconsuctor Ltd.
Functions	DC/DC Voltage Converter Integrated Circuit, Linear Voltage Regulator Integrated Circuit
Cases	SOT-23, SOT-89, SOT-23-5, SOT-25
Pins	28sd, 28ca, 20br, 16sw
Description	PFM step-up, 100kHz, 4.4V±2.5%, 400mA PFM step-up, 100kHz, 4.4V±2.5%, 400mA LDO, 4.4V±1.5%, 300mA, +CE, ECO, CL PFM step-up, 100kHz, 4.4V±2.5%, 400mA, +CE

SMD Code	A	Part Number	Manufacturer	Case	Pin	Description
644	cm	XC9111B441MR	Tor	SOT-23	16sw	DC/DC Voltage Converter Integrated Circuit PFM step-up, 100kHz, 4.4V±2.5%, 400mA
644	jb	XC9111B441PR	Tor	SOT-89	20br	DC/DC Voltage Converter Integrated Circuit PFM step-up, 100kHz, 4.4V±2.5%, 400mA
644	-	R1191N044D	Ric	SOT-23-5	28ca	Linear Voltage Regulator Integrated Circuit LDO, 4.4V±1.5%, 300mA, +CE, ECO, CL
644	eh	XC9111D441MR	Tor	SOT-25	28sd	DC/DC Voltage Converter Integrated Circuit PFM step-up, 100kHz, 4.4V±2.5%, 400mA, +CE