Specification	MAX638ACSA+

Frequency - Switching	65 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	16.5 V
Voltage - Input (Min) [Min]	2.2 V
Voltage - Output (Max) [Max]	16.5 V
Voltage - Output (Min/Fixed)	1.31 V
Voltage - Output (Min/Fixed)	5 V

MAX638 Series

5V Adjustable, CMOS, Step-Down Switching Regulator

Part	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed)	Output Type	Topology	Function	Output Configuration	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Mounting Type	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching	Package / Case	Package / Case	Package / Case	Supplier Device Package	Current - Output
Analog Devices Inc./Maxim Integrated MAX638ACSA	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	0 °C	70 °C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC
Analog Devices Inc./Maxim Integrated MAX638AEPA+	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Through Hole	1	-40 ¯C	85 C	65 kHz		8-DIP (0.300" 7.62mm)		8-PDIP
Analog Devices Inc./Maxim Integrated MAX638AESA-TG068	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	-40 ¯C	85 C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC
Analog Devices Inc./Maxim Integrated MAX638ACSA+T	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	0 °C	70 °C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC
Analog Devices Inc./Maxim Integrated MAX638BCPA	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Through Hole	1	0 °C	70 °C	65 kHz		8-DIP (0.300" 7.62mm)		8-PDIP	525 mA
Analog Devices Inc./Maxim Integrated MAX638ACSA+	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	0 °C	70 °C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC
Analog Devices Inc./Maxim Integrated MAX638AMJA	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Through Hole	1	-55 °C	125 °C	65 kHz		8-CDIP (0.300" 7.62mm)		8-CERDIP
Analog Devices Inc./Maxim Integrated MAX638AESA+	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	-40 ¯C	85 C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC
Analog Devices Inc./Maxim Integrated MAX638ACPA+	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Through Hole	1	0 °C	70 °C	65 kHz		8-DIP (0.300" 7.62mm)		8-PDIP
Analog Devices Inc./Maxim Integrated MAX638AESA-T	2.2 V	1.31 V	5 V	Adjustable (Fixed)	Buck	Step-Down	Positive	16.5 V	16.5 V	Surface Mount	1	-40 ¯C	85 C	65 kHz	0.154 in	8-SOIC	3.9 mm	8-SOIC

Pricing

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

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 0.00
		9000	$ 0.00
Newark	Each	1	$ 7.59
		10	$ 6.86
		25	$ 6.54
		50	$ 6.11
		100	$ 5.67
		300	$ 5.42
		500	$ 4.94

Description

General part information

MAX638 Series

The MAX638 was introduced in 1996. It was considered state of the art for many years and is still available for sale.For a list of more recent products, view ourlatest switching regulators.

Documents

Technical documentation and resources

MAX638 Reliability Data

Reliability Data

Package Drawing - Small-Outline IC, Narrow (0.15in)

Package Drawing

Datasheet

EOL Notices EN

Datasheet