MAX17502
60V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter
60V Synchronous Buck Converter with Internal FETs Enables High Efficiency
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Key Features
Applications/Uses
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 60 |
| VOUT1 (V) (min) | 0.9 |
| VOUT1 (V) (max) | 55 |
| IOUT1 (A) (max) | 1 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 600 |
| Design Tools | EE-Sim |
| Package/Pins | TDFN/10 TSSOP/14 |
| Budgetary Price (See Notes) | $1.84 @1k |
Simplified Block Diagram
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Parameters
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 60 |
| VOUT1 (V) (min) | 0.9 |
| VOUT1 (V) (max) | 55 |
| IOUT1 (A) (max) | 1 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 600 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=1931', '') |
| Package/Pins | TDFN/10 TSSOP/14 |
| Budgetary Price (See Notes) | $1.84 @1k |
Key Features
- Eliminates External Components and Reduce Total Cost
- No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
- Internal Compensation and Feedback Divider for 3.3V and 5V Fixed Outputs
- All-Ceramic Capacitors, Ultra-Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 60V Input Voltage Range
- 0.9V to 92%VIN Adjustable Output Voltage
- Delivers up to 1A
- 600kHz and 300kHz Switching Frequency Options
- Available in a 10-Pin, 3mm × 2mm TDFN and 14-Pin, 5mm × 4.4mm TSSOP Packages
- Reduces Power Dissipation
- Peak Efficiency > 90%
- Shutdown Current = 0.9µA (typ)
- Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Current Limit, Sink 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
- High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
Applications/Uses
- Base Station, VOIP, Telecom
- Battery-Powered Equipment
- General-Purpose Point-of-Load
- Home Theater
- HVAC and Building Control
- Industrial Process Control
Description
Create a design and simulate using EE-Sim®: MAX17502
The MAX17502 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. This device is offered in a fixed 3.3V, 5V, or adjustable output voltage (0.9V to 92%VIN) while delivering up to 1A of current. The output voltage is accurate to within ±1.7% over -40°C to +125°C. The MAX17502 is available in compact TDFN and TSSOP packages. Simulation models are available.
The device features peak-current-mode control with pulse-width modulation (PWM) and operates with fixed switching frequency at any load. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.
A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/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.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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