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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 I_Q Synchronous Buck Regulator Enables High Efficiency

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Overview

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 V_IN. 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.

MAX17532: Block Diagram

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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 V_IN 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

Parametric Specs

Part Number

V_IN
(V)

V_OUT1
(V)

Output Adjust. Method

I_OUT1
(A)

Switch Type

Synchronous Switching

Power Good Signal

DC-DC Outputs

Oper. Freq.
(kHz)

Design Tools

Package/Pins

Budgetary
Price

min

max

min

max

See Notes

MAX17532

0.8

Resistor

0.1

Internal

Yes

2200

EE-Sim

TDFN/10

UMAX/10

$1.05 @1k

See All Step-Down Switching Regulators (404)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX17532ATBEVKIT: Evaluation Kit for MAX17532
MAX17532AUBEVKIT: Evaluation Kit for MAX17532

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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