EVALUATION KIT AVAILABLE
MAX17632
4.5V to 36V, 2A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
General Description
Benefits and Features
● Reduces External Components and Total Cost
• No Schottky - Synchronous Operation
• Internal Compensation Components
The MAX17632 family of parts (MAX17632A, MAX17632B
and MAX17632C) is a high-efficiency, high-voltage, syn-
chronous step-down DC-DC converter with integrated
MOSFETs operating over an input-voltage range of 4.5V
to 36V. It can deliver up to 2A current. The MAX17632A
and MAX17632B are fixed 3.3V and fixed 5V output parts,
respectively. The MAX17632C is an adjustable output
• All-Ceramic Capacitors, Compact Layout
● Reduces Number of DC-DC Regulators to Stock
• Wide 4.5V to 36V Input
• Adjustable Output Range from 0.9V to 90% of V
• Delivers Up to 2A Over Temperature Range
• 400kHz to 2.2MHz Adjustable Frequency with
External Clock Synchronization
IN
voltage (0.9V to 90% of V ) part. Built-in compensation
IN
across the output-voltage range eliminates the need for
external compensation components.
• Available in a 16-Pin, 3mm x 3mm TQFN Package
The MAX17632 features peak-current-mode control archi-
tecture. The device can be operated in the forced pulse-
width modulation (PWM), or pulse-frequency modulation
(PFM), or discontinuous-conduction mode (DCM) to enable
high efficiency under full-load and light-load conditions. The
MAX17632 offers a low minimum on time that allows high
switching frequencies and a smaller solution size.
● Reduces Power Dissipation
• Peak Efficiency > 90%
• PFM and DCM Modes Enable Enhanced Light-
Load Efficiency
• Auxiliary Bootstrap Supply (EXTVCC) for Improved
Efficiency
• 2.8μA Shutdown Current
The feedback-voltage regulation accuracy over -40°C to
+125°C for the MAX17632A/MAX17632B/MAX17632C is
±1.2%.The device is available in a 16-pin (3mm x 3mm)
TQFN package. Simulation models are available.
● Operates Reliably in Adverse Industrial Environments
• Hiccup-Mode Overload Protection
• Adjustable and Monotonic Startup with Prebiased
Output Voltage
Applications
• Built-in Output-Voltage Monitoring with RESET
• Programmable EN/UVLO Threshold
• Overtemperature Protection
• High Industrial -40°C to +125°C Ambient Operating
Temperature Range / -40°C to +150°C Junction
Temperature Range
● Industrial Control Power Supplies
● General-Purpose Point-of-Load
● Distributed Supply Regulation
● Base Station Power Supplies
● Wall Transformer Regulation
● High Voltage Single-Board Systems
Ordering Information appears at end of data sheet.
19-100164; Rev 0; 9/17