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Details for MAX17245ETESB+ by Maxim Integrated
Electronic & Electrical Components > Semiconductors - ICs > Power Management
DC/DC CONV SYNC BUCK 2.2MHZ TQFN-16
MAX17245ETESB+ image

MAX17245ETESB+ by Maxim Integrated

DC/DC CONV SYNC BUCK 2.2MHZ TQFN-16
Features
180u00b0 Out-of-Phase Clock Output at SYNCOUT Enables Cascaded Power Supplies for Increased Power Output
220kHz to 2.2MHz Adjustable Frequency with External Synchronization
42V Input Voltage Transient Protection
>90% Peak Efficiency
All-Ceramic Capacitor Solution Allows Ultra-Compact Solution Size
Automatic LX Slew-Rate Adjustment for Optimum Efficiency Across Operating Frequency Range
Cycle-by-Cycle Current limit, Thermal Shutdown with Automatic Recovery
Eliminates External Components and Reduces Total Cost
Fixed 8ms Internal Software Start Reduces Input Inrush Current
Fixed Output Voltage with u00b12% Accuracy (5V/3.3V) or Externally Resistor Adjustable (1V to 10V)
Increases Design Flexibility
Integrated High-Side and Low-Side Switch Enables Synchronous Operation for High Efficiency and Reduced Cost
Low 28u03bcA (typ.) Quiescent Current
Low 5u03bcA (typ.) Shutdown Current
Operates Reliably
PWM and PFM Operation Optimizes Conversion Efficiency From Heavy to Light Loads
Power Good Output and High-Voltage EN Input Simplify Power Sequencing
Reduced EMI Emission with Spread-Spectrum
Reduces Power Dissipation
Part Information
MAX17245ETESB+ image
RoHS Compliant
Description
The MAX17245 high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 3.5V to 36V input voltage range with 42V input transient protection. The MAX17245 can operate in drop- out condition by running at 98% duty cycle. This converter delivers up to 3.5A and generates fixed output voltages of 3.3V/5V, along with the ability to program the output voltage between 1V to 10V. The MAX17245 uses a current-mode control architecture and can operate in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all loads and is useful in applications sensitive to switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. Under light-load applications, the external sync pin FSYNC logic input allows the device to operate in either PFM mode for reduced current consumption or fixed-frequency PWM (forced-PWM) mode to eliminate frequency variation to minimize EMI. Fixed-frequency PWM mode is extremely useful for power supplies designed for RF transceivers where tight emission control is necessary. This device is available in a compact 16-pin (5mm x 5mm) TQFN package with exposed pad and 16-pin TSSOP. -40°C to +85°C operation.
Specifications
Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
3.5V
Input Voltage Max:
36V
DC / DC Converter IC Case:
TQFN
No. of Pins:
16Pins
Output Current:
3.5A
Output Voltage Nom.:
3.3V
Switching Frequency:
2.2MHz
Operating Temperature Max:
85°C
Product Range:
MAX17245 Series
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)
Alternate Descriptions
MAX17245ETESB+, Buck Converters RS Components
Conv DC-DC Single Step Down 3.5V to 36V 16-Pin TQFN EP Tube Avnet America
Conv DC-DC Single Step Down 3.5V to 36V 16-Pin TQFN EP Tube Avnet Europe
36V, 3.5A, 2.2MHz Step-Down Converters with 28╬╝A Quiescent Current Future Electronics