MAX17503ATP+ by Analog Devices

4.5V-60V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

Status: Active
Series: MAX17503
RoHS: Unknown
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The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17503/MAX17503S high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs operates over a 4.5V to 60V input. It delivers up to 2.5A and 0.9V to 90%VIN output voltage. Built-in compensation across the output voltage range eliminates the need for external components. The feedback (FB) regulation accuracy over -40°C to +125°C is ±1.1%. The device is available in a compact (4mm x 4mm) TQFN-EP lead(Pb)-free package with an exposed pad. Simulation models are available. The device features a peak-current-mode control architecture with a MODE feature that can be used to operate the device in pulse-width modulation (PWM), pulse-frequency modulation (PFM), or discontinuous-conduction mode (DCM) 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. DCM features constant frequency operation down to lighter loads than PFM mode, by not skipping pulses, but only disabling negative inductor current at light loads. DCM operation offers efficiency performance that lies between PWM and PFM modes.The MAX17503S offers a lower minimum on-time that allows for higher switching frequencies and a smaller solution size. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/input undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

Prices starting from US$3.66


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Logo for Newark Electronics Newark Electronics US$4.18
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Logo for element14 element14 US$3.69
1,512
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Features

Eliminates External Components and Reduces Total Cost No Schottky-Synchronous Operation for High Efficiency and Reduced Cost Internal Compensation for Stable Operation at Any Output Voltage All-Ceramic Capacitor Solution: Ultra-Compact Layout with as Few as Eight External Components
No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
Internal Compensation for Stable Operation at Any Output Voltage
All-Ceramic Capacitor Solution: Ultra-Compact Layout with as Few as Eight External Components
Reduces Number of DC-DC Regulators to Stock Wide 4.5V to 60V Input Voltage Range 0.9V to 90%VIN Output Voltage Delivers Up to 2.5A Over Temperature 100kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization MAX17503S Allows Higher Frequency of Operation Available in a 20-Pin, 4mm x 4mm TQFN-EP Package
Wide 4.5V to 60V Input Voltage Range
0.9V to 90%VIN Output Voltage
Delivers Up to 2.5A Over Temperature
100kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
MAX17503S Allows Higher Frequency of Operation
Available in a 20-Pin, 4mm x 4mm TQFN-EP Package
Reduces Power Dissipation Peak Efficiency of 94% PFM and DCM Modes for High Light-Load Efficiency Shutdown Current = 2.8µA (typ)
Peak Efficiency of 94%
PFM and DCM Modes for High Light-Load Efficiency
Shutdown Current = 2.8µA (typ)
Operates Reliably Hiccup-Mode Current Limit and Autoretry Startup Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin) Resistor-Programmable EN/UVLO Threshold Adjustable Soft-Start and Prebiased Power-Up Wide -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
Hiccup-Mode Current Limit and Autoretry Startup
Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin)
Resistor-Programmable EN/UVLO Threshold
Adjustable Soft-Start and Prebiased Power-Up
Wide -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 60
VOUT1 (V) (min) 0.9
VOUT1 (V) (max) 54
IOUT1 (A) (max) 2.5
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 2200
Design Tools EE-Sim
Package/Pins TQFN-CU/20
BudgetaryPrice (See Notes) 2.44


MAX17503ATP+ Semiconductors - ICs by Analog Devices

DC/DC CONV SYNC BUCK 2.2MHZ TQFN-20

Status: Unknown
Series: Himalaya Series
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 4.5V
Input Voltage Max 60V
No. of Outputs 1Outputs
DC / DC Converter IC Case TQFN
No. of Pins 20Pins
Output Current 2.5A
Output Voltage Min 900mV
Output Voltage Max 54V
Switching Frequency 2.2MHz
Operating Temperature Max 125°C
Product Range Himalaya Series
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Dc/Dc Conv, Sync Buck, 2.2Mhz, Tqfn-20 | Newark Electronics
DC/DC CONV, SYNC BUCK, 2.2MHZ, TQFN-20 | element14

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This part has not been flagged as RoHS Compliant.

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