MAX1771ESA

MAX1771ESA is a high-voltage PWM DC-DC converter controller from Maxim (now Analog Devices) geared for automotive and industrial power supplies. It typically drives an external MOSFET to form a buck (and in some configurations buck/boost) regulator. Key points:
- Wide input range suitable for automotive harsh environments (often up to ~60 V)
- Current-mode PWM control with soft-start
- Programmable switching frequency
- Protection features: undervoltage lockout, overcurrent/short-circuit protection, and thermal shutdown
- Enable/disable control and fault reporting
- ESA suffix denotes a specific packaging/temperature grade (e.g., automotive/industrial variant)
Use: design compact, efficient DC-DC converters with robust protection for harsh operating conditions. For exact electrical specs, pinout, and recommended application circuitry, consult the official MAX1771ESA datasheet.

- Pin count: 28 pins (MAX1771ESA is a 28-pin package).
- Function: High-efficiency synchronous buck DC-DC regulator controller with integrated dual MOSFET drivers for step-down power conversion. Provides current-mode PWM control, soft-start, enable/disable, undervoltage lockout, overcurrent protection, and protection/PGOOD features for chassis/power-supply applications.

MAX1771ESA is manufactured by Maxim Integrated. Maxim Integrated is a semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (now part of Analog Devices, Inc.).

Applications of MAX1771ESA:
- Automotive power management: wide input range DC-DC regulation
- Portable/battery-powered equipment: high-efficiency regulators
- Industrial and telecom power supplies: compact, efficient rails
- Consumer electronics: set-top boxes, displays, peripherals
- Power-backup/UPS and standby rails: reliable secondary power rails

MAX1771ESA is in a 28-pin TSSOP package with an exposed pad (EP).