Specification	MAX629ESA+

Current - Output	500 mA
Frequency - Switching	300 kHz
Function	Step-Up/Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Positive or Negative
Output Type	Adjustable
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Boost, SEPIC, Flyback
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	28 V
Voltage - Output (Max) [Min]	-28 V
Voltage - Output (Min/Fixed)	0.8 V

MAX629 Series

Part	Mounting Type	Current - Output	Topology	Output Type	Package / Case	Package / Case	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Function	Frequency - Switching	Voltage - Output (Max) [Max]	Voltage - Output (Max) [Min]	Output Configuration	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Supplier Device Package	Number of Outputs
Analog Devices Inc./Maxim Integrated MAX629ESA-T	Surface Mount	500 mA	Boost Flyback SEPIC	Adjustable	0.154 in	8-SOIC	3.9 mm	85 C	-40 ¯C	5.5 V	Step-Up Step-Up/Step-Down	300 kHz	28 V	-28 V	Positive or Negative	2.7 V	0.8 V	8-SOIC	1
Analog Devices Inc./Maxim Integrated MAX629ESA+T	Surface Mount	500 mA	Boost Flyback SEPIC	Adjustable	0.154 in	8-SOIC	3.9 mm	85 C	-40 ¯C	5.5 V	Step-Up Step-Up/Step-Down	300 kHz	28 V	-28 V	Positive or Negative	2.7 V	0.8 V	8-SOIC	1
Analog Devices Inc./Maxim Integrated MAX629ESA	Surface Mount	500 mA	Boost Flyback SEPIC	Adjustable	0.154 in	8-SOIC	3.9 mm	85 C	-40 ¯C	5.5 V	Step-Up Step-Up/Step-Down	300 kHz	28 V	-28 V	Positive or Negative	2.7 V	0.8 V	8-SOIC	1
Analog Devices Inc./Maxim Integrated MAX629ESA+	Surface Mount	500 mA	Boost Flyback SEPIC	Adjustable	0.154 in	8-SOIC	3.9 mm	85 C	-40 ¯C	5.5 V	Step-Up Step-Up/Step-Down	300 kHz	28 V	-28 V	Positive or Negative	2.7 V	0.8 V	8-SOIC	1

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	637	$ 10.72
	Tube	1	$ 12.85
		10	$ 9.07
		25	$ 8.10
		100	$ 7.01
		250	$ 6.49
		500	$ 6.17
		1000	$ 5.95

Description

General part information

MAX629 Series

The MAX629 low-power DC-DC converter features an internal N-channel MOSFET switch and programmable current limiting. It is designed to supply positive or negative bias voltages up to ±28V from input voltages in the 0.8V to VOUT range, and can be configured for boost, flyback, and SEPIC topologies.The MAX629's current-limited pulse-frequency-modulation (PFM) control scheme provides high efficiency over a wide range of load conditions. An internal, 0.5A N-channel MOSFET switch reduces the total part count, and a high switching frequency (up to 300kHz) allows for tiny surface-mount magnetics.The MAX629's combination of low supply current, logic-controlled shutdown, small package, and tiny external components makes it an extremely compact and efficient high-voltage biasing solution that's ideal for battery-powered applications. The MAX629 is available in an 8-pin SO package.Applications2-Cell and 3-Cell Battery-Powered ApplicationsHigh-Efficiency DC-DC Boost ConvertersPalmtop ComputersPositive or Negative LCD Bias GeneratorsVaractor Tuning Diode Bias

Documents

Technical documentation and resources

Datasheet

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

Package Drawing

MAX629 Reliability Data

Reliability Data