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Switching Regulator - Switching Regulators 
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MAX17532
42V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22µA No-Load Supply Current
42V, Low IQ Synchronous Buck Regulator Enables High Efficiency
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Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 4 |
| VIN (V) (max) | 42 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 37 |
| IOUT1 (A) (max) | 0.1 |
| 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 | TDFN/10 UMAX/10 |
| Budgetary Price (See Notes) | 1.22 |
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Parameters
Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 4 |
| VIN (V) (max) | 42 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 37 |
| IOUT1 (A) (max) | 0.1 |
| Switch Type | Internal |
| Output Adjust. Method | Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 2200 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=5458', '') |
| Package/Pins | TDFN/10 UMAX/10 |
| Budgetary Price (See Notes) | 1.22 |
Key Features
- Reduces External Components and Total Cost
- No Schottky–Synchronous
- Internal Compensation for Any Output Voltage
- Built-In Soft-Start
- All-Ceramic Capacitors, Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4V to 42V Input
- Adjustable 0.8V to 0.9 x VIN Output
- 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
- Reduces Power Dissipation
- 22µA Quiescent Current
- Peak Efficiency > 90%
- PFM Enables Enhanced Light-Load Efficiency
- 1.2µA Shutdown Current
- Operates Reliably in Adverse Environments
- Peak Current Limit Protection
- Built-In Output Voltage Monitoring Active-Low RESET
- Programmable EN/UVLO Threshold
- Monotonic Startup Into Prebiased Load
- Overtemperature Protection
- -High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150° C Junction Temperature Range
Applications/Uses
Description
The MAX17532 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 42V input. The converter can deliver up to 100mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C.
The MAX17532 uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.
The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) µMAX® packages. Simulation models are available.
The MAX17532 uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.
The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) µMAX® packages. Simulation models are available.
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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