Analog Devices Inc./Maxim Integrated MAX619C/D+C0N

Overview

The MAX619C/D+C0N from Maxim Integrated is a regulated 5V ±4% charge-pump DC-DC converter designed for low-voltage battery-powered systems. It operates from 2V to 3.6V input (e.g., two alkaline or NiMH cells), delivers up to 50mA output current at ≥3V input, features 500kHz internal oscillator, logic-controlled shutdown with ≤1µA quiescent current, and requires only four external capacitors - enabling compact 0.1in² designs in portable instrumentation and microprocessor-based systems.

For engineers reviewing the MAX619C/D+C0N datasheet, MAX619C/D+C0N pinout, MAX619C/D+C0N application, or MAX619C/D+C0N equivalent, key selection criteria include guaranteed output current over temperature (20mA at VIN ≥2V, 50mA at VIN ≥3V), no-inductor architecture for low EMI, load-disconnect capability during shutdown, and compatibility with standard 8-pin DIP/SO footprints.

Technical Context

The MAX619C/D+C0N employs a pulse-skipping controller to regulate output voltage at 5V ±4%, dynamically switching between voltage-doubler mode (VIN = 3.0–3.6V) and voltage-tripler mode (VIN = 2.0–2.5V), with hybrid 2.5× operation between 2.5–3.0V. Internal circuitry selects the higher of VIN or VOUT as its supply rail to maximize efficiency across the input range.

It integrates CMOS-compatible SHDN control, disconnects OUT from IN during shutdown, and lacks short-circuit protection. Output ripple is specified at ≤100mV (no-load to full-load), and efficiency reaches 80% typical at VIN = 2V, IOUT = 20mA.

Key Specifications

Pinout & Package

The MAX619C/D+C0N is packaged in an 8-pin plastic DIP (dual in-line package), compatible with through-hole assembly and prototyping breadboards. Pin assignments follow standard Maxim charge-pump layout and are electrically identical to the SO variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar charge-pump DC-DC converter applications.

Compared with MAX619C/D+C0N, MAX680CPA offers higher current but sacrifices shutdown control and precision regulation at low VIN, while TPS60403DBVR improves integration and frequency but demands revised layout and filtering - making MAX619C/D+C0N optimal for cost-sensitive, low-EMI, battery-critical designs requiring guaranteed 20mA down to 2V.

Availability

MAX619C/D+C0N is available at Aetrix Electronics and suitable for two-cell battery conversion, portable instrumentation, and microprocessor-based systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MAX619C/D+C0N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, communications, and consumer applications.

The MAX619C/D+C0N belongs to Maxim's charge-pump DC-DC converter product line, engineered specifically for ultra-low-power, inductorless voltage boosting in space- and battery-constrained portable electronics.

FAQ

What is the operating temperature range for the MAX619C/D+C0N?

The MAX619C/D+C0N is rated for operation from 0°C to +70°C, matching the "C" grade specification defined in Maxim's ordering matrix. This range covers commercial and consumer-grade portable equipment where ambient temperatures remain within typical indoor or handheld-use conditions. The device's output current guarantee (20mA at VIN ≥2V) is validated across this full temperature span, ensuring reliable performance without derating in standard applications.

Does the MAX619C/D+C0N require external inductors?

No, the MAX619C/D+C0N does not require external inductors. It uses a capacitor-based charge-pump architecture with two external 0.22µF flying capacitors (C1 and C2) and two 10µF bulk capacitors (input and output). This inductorless design eliminates magnetic fields, reduces EMI, simplifies layout, and enables ultra-compact implementations - a core advantage confirmed in the device's "No Inductors; Very Low EMI Noise" feature list.

How does shutdown functionality work on the MAX619C/D+C0N?

The MAX619C/D+C0N enters shutdown when the SHDN pin is driven high (logic "1"). In this state, internal switching halts, the output is actively disconnected from the input, and supply current drops to ≤1µA. The device resumes regulation within ~0.5ms after SHDN is pulled low (to GND), assuming VIN = 3.6V and no load. This behavior is explicitly documented in the "Shutdown Mode" section and verified in typical operating characteristics graphs.

Can the MAX619C/D+C0N drive a 50mA load across its full input range?

The MAX619C/D+C0N guarantees 50mA output current only when VIN ≥3.0V. At VIN = 2.0V, the guaranteed output current is 20mA - a hard specification confirmed in the "Features" table and Electrical Characteristics section. Attempting 50mA at 2V may cause output droop or instability, as efficiency and charge-pump gain decrease significantly below 3V. Designers must size loads accordingly per input voltage conditions.

What capacitor types are recommended for the MAX619C/D+C0N?

For flying capacitors C1 and C2, 0.22µF X7R or NP0 ceramic capacitors are recommended due to low ESR and stable capacitance over voltage/temperature. For input (C3) and output (C4) bulk capacitors, 10µF tantalum (e.g., Sprague 595D106X0010A2) or low-ESR ceramic capacitors are specified. Ceramic variants allow reduction to 2µF (C3) and 1µF (C4), as noted in the Applications Information section - all values validated in typical operating circuits.