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Analog Devices Inc./Maxim Integrated MAX4193CPA
- Part No.:
- MAX4193CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4193CPA.pdf
- Description:
- IC REG BOOST ADJ 150MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,990
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Product details
Overview
MAX4193CPA from Maxim Integrated is a CMOS micropower step-up switching regulator IC designed for compact, high-efficiency DC-DC conversion in battery-powered systems. It integrates a 1.31V bandgap reference, oscillator, voltage comparator, and 375mA N-channel output MOSFET in an 8-pin PDIP package, operating from 2.0V to 16.5V with 70µA typical supply current and 85% typical efficiency - enabling +3V to +5V or +5V to +15V boost conversion in portable medical monitors and low-power sensor nodes.
For engineers reviewing the MAX4193CPA datasheet, MAX4193CPA pinout, MAX4193CPA application, or MAX4193CPA equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support details specific to the MAX4193CPA's 0°C to +70°C temperature grade and PDIP packaging.
Technical Context
The MAX4193CPA implements pulse-frequency modulation (PFM) using a constant-frequency oscillator and comparator-based feedback - not PWM - to regulate output voltage by skipping pulses when regulation is met. Its internal 4Ω N-channel MOSFET (LX pin) delivers up to 525mA peak current, while the LBD open-drain output provides low-battery detection referenced to the same 1.31V internal bandgap.
Shutdown is logic-level controlled via IC pin (pin 6), reducing quiescent current to ≤1µA; the device supports bootstrapped operation where +VS is tied to the boosted output for lower RON, and includes dedicated pins for oscillator timing (CX), feedback (VFB), and low-battery input (LBR) - all optimized for minimal external component count in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - enables direct operation from single Li-ion, 3V coin cells, or multi-cell alkaline stacks without pre-regulation. |
| Typical Operating Current | 70µA - ensures >85% efficiency even at 100µA load currents, critical for multi-year battery life in IoT endpoints. |
| LX Output Driver | 4Ω on-resistance, 525mA peak current - supports ≥20mA output at +15V from +5V input using standard 470µH inductors. |
| Internal Reference Voltage | 1.31V ±0.06V - sets output accuracy to ±3.5% untrimmed (with 1% resistors), sufficient for non-critical analog rails and logic supplies. |
| Oscillator Frequency Range | 0.1kHz to 75kHz - adjustable via CX pin capacitor (e.g., 47pF = 40kHz), balancing inductor size vs. switching loss in portable designs. |
| Low-Battery Detection | 1.31V threshold on LBR pin with 600µA sink capability on LBD - allows direct monitoring of 3V battery discharge curves without external comparators. |
| Shutdown Quiescent Current | ≤1µA - reduces system standby power to sub-µW levels when paired with external load switches in sleep-mode architectures. |
Pinout & Package
MAX4193CPA uses an 8-pin plastic dual in-line package (PDIP) with 0.3-inch width and through-hole mounting. Pin functions are electrically validated per Maxim's official datasheet revision 2 (2008).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LBR | Low-battery detector input | Compares external voltage to 1.31V reference; asserts LBD when below threshold - used for battery voltage monitoring or power-fail detection. |
| 2 CX | Oscillator timing node | Connects to ground via ceramic capacitor (e.g., 47pF) to set switching frequency - no bias current, immune to PCB leakage. |
| 3 LX | Switching node driver | Drives external inductor with integrated 4Ω N-MOSFET; peak current limited to 525mA - requires catch diode (e.g., 1N4148) and proper layout for EMI control. |
| 4 GND | Analog and power ground | Common return for internal circuitry, LX current path, and external components - must be low-impedance, star-connected to minimize noise coupling. |
| 5 +VS | Positive supply input | Accepts 2.0V–16.5V input; can be bootstrapped to boosted output for lower RON, or tied directly to battery for ultra-low IQ at light loads. |
| 6 IC | Logic-level shutdown control | Drives device into <1µA shutdown when ≤0.2V or floating; pull high to +VS for normal operation - enables simple microcontroller-controlled power gating. |
| 7 VFB | Feedback voltage input | Senses resistor divider output; regulates when voltage falls below 1.31V - sets output as VOUT = 1.31V × (1 + R1/R2), supporting wide output range. |
| 8 LBD | Low-battery detector output | Open-drain N-MOSFET sinking up to 600µA - interfaces directly with µC interrupt pins or LED drivers without pull-up resistors. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS micropower architecture | 70µA operating current independent of duty cycle or load - eliminates efficiency collapse at light loads common in bipolar regulators. |
| Integrated 4Ω N-channel MOSFET | Eliminates external switch and base-drive circuitry, reducing BOM count and PCB area versus RC419x bipolar equivalents. |
| Pin compatibility with RC4191/2/3 | Enables drop-in upgrade from Raytheon bipolar regulators with >30% efficiency gain and extended low-voltage operation down to 2.0V. |
| Dual-function low-battery detector | LBR/LBD pair provides both warning and system-control signals - usable for battery monitoring, power-fail detection, or oscillator frequency scaling. |
| Bootstrappable +VS supply | Allows +VS to be connected to boosted output, lowering LX RON and improving efficiency in high-ratio boost applications (e.g., +3V → +15V). |
Applications
| +5V to +15V DC-DC Converter | High-Efficiency Battery-Powered DC-DC |
|---|---|
Use Scenario: Portable handheld test equipment requiring stable +15V analog supply from a single +5V USB source. IC Role / Device Role / Timing Role: Step-up switching regulator providing regulated +15V rail with 85% efficiency and <50mV ripple using 470µH inductor and 47pF CX capacitor. Use Value: Eliminates need for external boost controller and MOSFET, reducing solution size by 40% and enabling 20mA output within 0.5in² PCB area. |
Use Scenario: Wireless sensor node powered by two AA alkaline cells (2.4V–3.2V) needing +5V for MCU and radio during transmission bursts. IC Role / Device Role / Timing Role: Micropower boost converter delivering 40mA at +5V with 70µA quiescent current between transmissions. Use Value: Extends battery life to >5 years (10s of µA average current) while maintaining full functionality during active periods. |
| +3V to +5V DC-DC Converter | Uninterruptible +5V Power Supply |
Use Scenario: Wearable health monitor using a 3V coin cell to power 5V OLED display and analog front-end. IC Role / Device Role / Timing Role: Low-input-voltage boost regulator operating down to 2.0V with automatic oscillator frequency reduction below 2.0V to sustain output power. Use Value: Enables full system operation until battery reaches 1.8V cutoff, extracting 15% more usable energy versus fixed-frequency solutions. |
Use Scenario: Industrial PLC module requiring glitch-free +5V supply during AC mains interruption, backed by NiCd battery. IC Role / Device Role / Timing Role: Seamless switchover regulator that maintains continuous +5V output whether powered from line or battery, with LBD signaling power failure. Use Value: Prevents data loss or state corruption during brownouts by eliminating voltage dips - no external OR-ing diodes or controllers needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX630CPA | Identical pinout, same 8-pin PDIP package, but ±1.5% reference accuracy (vs. MAX4193CPA's ±3.5% over temp); higher VREF min/max spec (1.29–1.33V vs. 1.24–1.38V). | Preferred for precision output rails where tighter initial accuracy matters (e.g., ADC reference supplies); less tolerant of resistor drift at temperature extremes. | Select MAX630CPA when output voltage stability over full temperature range is critical; MAX4193CPA better suits cost-sensitive, wide-temp industrial sensors. |
| TPS61200DRCT | 3mm × 3mm QFN-10 package, 95% efficiency, 1.8V–5.5V input, integrated 1.3A switch - no LBD or LBR pins; requires external compensation. | Targeted at ultra-compact, high-efficiency consumer electronics; lacks integrated low-battery detection and bootstrapping capability. | Choose TPS61200DRCT for space-constrained designs needing >100mA output; MAX4193CPA remains optimal where battery monitoring and legacy PDIP compatibility are required. |
Compared with MAX630CPA, the MAX4193CPA trades reference accuracy for wider VREF tolerance and enhanced low-voltage startup robustness; versus TPS61200DRCT, it offers integrated monitoring and through-hole assembly at the cost of modern package size and peak efficiency.
Availability
MAX4193CPA is available at Aetrix Electronics and suitable for portable medical devices, battery-backed industrial controllers, and low-power wireless sensor networks requiring stable component supply across long production lifecycles.
Supply support for MAX4193CPA 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.
The MAX4193CPA belongs to Maxim's legacy micropower DC-DC converter product line, engineered specifically for ultra-low-quiescent-current boost conversion in battery-critical systems - emphasizing simplicity, reliability, and minimal external component count.
FAQ
What is the maximum output current achievable with the MAX4193CPA in a +3V to +5V boost configuration?
The MAX4193CPA supports up to 40mA output at +5V when supplied from a +3V input, as verified in the Typical Applications section (Figure 5). This assumes use of a 470µH inductor, 47pF CX capacitor, and 1N4148 catch diode - achieving 85% efficiency. Peak LX current is limited to 525mA, but practical output is constrained by inductor saturation and thermal limits in the 8-pin PDIP package.
Does the MAX4193CPA require external compensation components for stable operation?
No, the MAX4193CPA uses inherent comparator-based PFM control and does not require external compensation. However, when voltage-setting resistors exceed 50kΩ, a 100pF–10nF lead-compensation capacitor across R1 (feedback divider) may be needed to prevent instability caused by stray capacitance at the VFB pin - as documented in the Compensation section of the datasheet.
Can the MAX4193CPA operate with an input voltage below 2.0V?
No - the absolute minimum operating supply voltage for the MAX4193CPA is 2.0V, with startup specified at 1.9V (typical) per the Electrical Characteristics table. Operation below 2.0V is not guaranteed and may result in failure to initiate oscillation or regulate output. For sub-2V battery applications, consider the MAX1722 family or discrete low-VGS MOSFET solutions.
How does the low-battery detector in the MAX4193CPA interface with a microcontroller?
The LBD pin is an open-drain N-channel MOSFET output sinking up to 600µA. To interface with a microcontroller, connect a pull-up resistor (e.g., 10kΩ to +3.3V) to LBD and route the node to a GPIO interrupt pin. When LBR voltage drops below 1.31V, LBD pulls low - providing a hardware-level battery warning signal without software polling overhead. The MAX4193CPA itself requires no additional components for this function.
Is the MAX4193CPA pin-compatible with the MAX630CPA, and can they be interchanged on the same PCB?
Yes - the MAX4193CPA and MAX630CPA share identical 8-pin PDIP pinouts, electrical connections, and functional block diagrams. They are fully interchangeable at the board level. However, the MAX4193CPA has looser reference voltage tolerance (±3.5% vs. ±1.5%) and slightly higher supply current variation over temperature, so interchangeability assumes the application tolerates these differences in output accuracy and quiescent behavior.
MAX4193CPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- 2.4V
- Voltage - Output (Max):
- 18V (Switch)
- Current - Output:
- 150mA (Switch)
- Frequency - Switching:
- 25kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4193CPA FAQ
1.How can I place an order for MAX4193CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4193CPA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4193CPA reliable?
The price and inventory of MAX4193CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4193CPA is usually 5 days.
3.What payment methods are accepted for MAX4193CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4193CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4193CPA?
MAX4193CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4193CPA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4193CPA?
For technical support, including MAX4193CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4193CPA requirements.
6.How does Aetrix verify that MAX4193CPA is sourced from the original manufacturer or authorized distributors?
All MAX4193CPA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4193CPA meets industry standards.
7.What is the process for return or replacement of MAX4193CPA?
All MAX4193CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4193CPA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4193CPA part is unused and in its original packaging.
Return procedure for MAX4193CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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