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MFG:TSSOP D/C:2005+
Part Number: MAX618
MFG: TSSOP
D/C: 2005+
Description: The MAX618 CMOS, PWM, step-up DC-DC converter generates output voltages up to 28V and accepts inputs f...
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MAX618
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DataSheet
General Description
MAX618 General Description
The MAX618 CMOS, PWM, step-up DC-DC converter generates output voltages up to 28V and accepts inputs from +3V to +28V. An internal 2A, 0.3½ switch eliminates the need for external power MOSFETs while supplying output currents up to 500mA or more. A PWM control scheme combined with Idle Mode™ operation at light loads minimizes noise and ripple while maximizing efficiency over a wide load range. No-load operating current is 500µA, which allows efficiency up to 93%.
A fast 250kHz switching frequency allows the use of small surface-mount inductors and capacitors. A shutdown mode extends battery life when the device is not in use. Adaptive slope compensation allows the MAX618 to accommodate a wide range of input and output voltages with a simple, single compensation capacitor.
The MAX618 is available in a thermally enhanced 16- pin QSOP package that is the same size as an industrystandard 8-pin SO but dissipates up to 1W. An evaluation kit (MAX618EVKIT) is available to help speed designs.
MAX618 Maximum Ratings
IN to GND .............................................................-0.3V to +30V
LX to GND .............................................................-0.3V to +30V
VL to GND ...............................................................-0.3V to +6V
SHDN, COMP, FB to GND ..............................-0.3V to (VL + 0.3V)
PGND to GND....................................................................±0.3V
Continuous Power Dissipation (TA = +70°C) (Note 1)
16-Pin QSOP (derate 15mW/°C above +70°C)...................1W
Operating Temperature Range ......................-40°C to +85°C
Junction Temperature...................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10sec) .........................+300°C
LX to GND .............................................................-0.3V to +30V
VL to GND ...............................................................-0.3V to +6V
SHDN, COMP, FB to GND ..............................-0.3V to (VL + 0.3V)
PGND to GND....................................................................±0.3V
Continuous Power Dissipation (TA = +70°C) (Note 1)
16-Pin QSOP (derate 15mW/°C above +70°C)...................1W
Operating Temperature Range ......................-40°C to +85°C
Junction Temperature...................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10sec) .........................+300°C
MAX618 Features
Adjustable Output Voltage Up to +28V
Up to 93% Efficiency
Wide Input Voltage Range (+3V to +28V)
Up to 500mA Output Current at +12V
500µA Quiescent Supply Current
3µA Shutdown Current
250kHz Switching Frequency
Small 1W 16-Pin QSOP Package
Up to 93% Efficiency
Wide Input Voltage Range (+3V to +28V)
Up to 500mA Output Current at +12V
500µA Quiescent Supply Current
3µA Shutdown Current
250kHz Switching Frequency
Small 1W 16-Pin QSOP Package
MAX618 Typical Application
Automotive-Powered DC-DC Converters
Industrial +24V and +28V Systems
LCD Displays
Palmtop Computers
Industrial +24V and +28V Systems
LCD Displays
Palmtop Computers
MAX618 Connection Diagram
MAX618
PDF/DataSheet Download
- Datasheet: MAX618
- File Size: 209325 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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