MAX8614B

Dual-Output (+ and -) DC-DC Converters for CCD

Small, 3mm x 3mm TDFN Package

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Overview

Dual Output Voltages (+ and -)
Adjustable Up to +24V and Down to -10V at 5.5V_IN
Output Short/Overload Protection
True Shutdown on Both Outputs
Controlled Inrush Current During Soft-Start
Selectable Power-On Sequencing
Up to 90% Efficiency
1µA Shutdown Current
1MHz Fixed-Frequency PWM Operation
Fault-Condition Flag
Thermal Shutdown
Small, 3mm x 3mm, 14-Pin TDFN Package

The MAX8614A/MAX8614B dual-output step-up DC-DC converters generate both a positive and negative supply voltage that are each independently regulated. The positive output delivers up to 50mA while the inverter supplies up to 100mA with input voltages between 2.7V and 5.5V. The MAX8614A/MAX8614B are ideal for powering CCD imaging devices and displays in digital cameras and other portable equipment.

The MAX8614A/MAX8614B generate an adjustable positive output voltage up to +24V and a negative output down to 16V below the input voltage. The MAX8614B has a higher current limit than the MAX8614A. Both devices operate at a fixed 1MHz frequency to ease noise filtering in sensitive applications and to reduce external component size.

Additional features include pin-selectable power-on sequencing for use with a wide variety of CCDs, True Shutdown™, overload protection, fault flag, and internal soft-start with controlled inrush current.

The MAX8614A/MAX8614B are available in a spacesaving 3mm x 3mm 14-pin TDFN package and are specified over the -40°C to +85°C extended temperature range.

Applications

Camcorders and Portable Multimedia
CCD Bias Supplies and OLED Displays
Digital Cameras
PDAs and Smartphones

Documentation

Data Sheet 1

MAX8614: Dual-Output (+ and -) DC-DC Converters for CCD Data Sheet (Rev.3) 12/17/2019

Reliability Data 1

MAX8614B Reliability Data 01/12/2023

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Switching Regulators & Controllers 1
MAX1567	Obsolete	Six-Channel, High-Efficiency, Digital Camera Power Supplies

Evaluation Kits

Evaluation Kit for the MAX8614A/MAX8614B

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Features and Benefits

2.7V to 5.5V Input Range
Adjustable Output
- V_BST = +15V (At 20mA)
- V_INV = -7.5V (At 80mA)
Adjustable Up to +24V and Down to -10V at a +5.5V Input

0.1µA (typ) IC Shutdown Current
Fixed 1MHz PWM Switching Frequency
Surface-Mount Component Construction
Fully Assembled and Tested

Product Details

The MAX8614 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board. The EV kit contains the MAX8614B (0.8A/0.75A current limit), a dual-output, step-up DC-DC converter that generates an adjustable positive and an adjustable negative output. The EV kit accepts a 2.7V to 5.5V input and provides a +15V and -7.5V output at 1MHz fixed PWM operation.

The MAX8614 EV kit can also be used to evaluate the MAX8614A, a dual-output, step-up DC-DC converter that has a lower current limit (0.44A/0.33A).

Applications