My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4193ESA
- Part No.:
- MAX4193ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4193ESA.pdf
- Description:
- IC REG BOOST ADJ 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,955
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4193ESA 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 SO package. Key confirmed parameters include 2.0V–16.5V input range, 70µA typical operating current, 1µA max shutdown current, 85% typical efficiency, and on-board low-battery detection with 1.31V threshold.
For engineers reviewing the MAX4193ESA datasheet, MAX4193ESA pinout, MAX4193ESA application, or MAX4193ESA equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin functions, and two rigorously confirmed alternative parts - all grounded in Maxim's official documentation for the MAX4193ESA variant.
Technical Context
The MAX4193ESA operates as a pulse-frequency modulation (PFM) step-up regulator using a constant-frequency oscillator and comparator-based feedback loop. Its internal 1.31V reference compares against a resistive divider at VFB to control LX switching, enabling precise output voltage regulation without external op-amps.
It features integrated low-battery detection via LBR/LBD pins with 1.31V threshold and open-drain output capable of sinking 600µA, plus logic-level shutdown (IC pin) that reduces quiescent current to ≤1µA. The LX driver is a 4Ω N-channel MOSFET rated for 525mA peak current, optimized for minimal gate-drive loss in micropower applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.0V to 16.5V - supports single-cell Li-ion, multi-cell alkaline/NiCd, and wide industrial supply rails without external regulators. |
| Operating Current | 70µA typical - enables >1-year battery life in 10µA-average-load IoT sensors powered by CR2032 cells. |
| Shutdown Current | ≤1µA maximum - ensures negligible drain during system sleep modes, critical for always-on monitoring devices. |
| Efficiency | 85% typical at mid-load - reduces thermal stress and extends runtime in space-constrained portable medical or handheld instruments. |
| LX Output Driver | 4Ω on-resistance, 525mA peak - allows direct drive of small inductors (e.g., 470µH) without external MOSFETs in sub-5W boost designs. |
| Low-Battery Threshold | 1.31V ±0.07V - provides accurate, temperature-stable warning for 3V/9V battery depletion before system brownout. |
| Oscillator Frequency | 0.1kHz to 75kHz - set externally via CX capacitor (e.g., 47pF = 40kHz), balancing switching loss vs. inductor size. |
| Reference Accuracy | ±1.5% over -40°C to +85°C - enables untrimmed output voltage accuracy when using 1% feedback resistors. |
Pinout & Package
MAX4193ESA is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard JEDEC MS-012AC dimensions (4.9mm × 6.0mm, 1.75mm height). Pin spacing is 1.27mm, compatible with automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LBR | Low-battery detector input | Compares external voltage (e.g., battery tap) to internal 1.31V reference; triggers LBD output when below threshold. |
| 2 CX | Oscillator timing node | Connects to ground via ceramic capacitor (e.g., 47pF) to set switching frequency; stray capacitance must be minimized. |
| 3 LX | Switching output driver | Drives external inductor; integrates 4Ω N-MOSFET with 525mA peak rating - no external switch needed for ≤5W designs. |
| 4 GND | Analog and power ground | Single-point return for reference, comparator, and LX current path; requires low-impedance PCB trace to minimize noise. |
| 5 +VS | Main supply input | Accepts 2.0V–16.5V; can be bootstrapped from output for lower LX RON, or tied directly to input for lowest quiescent current. |
| 6 IC | Logic-level shutdown control | Pulled high to +VS for operation; driven <0.2V or left floating to enter shutdown mode (<1µA IQ). |
| 7 VFB | Feedback voltage input | Resistive divider from output sets regulated voltage as VOUT = 1.31V × (1 + R1/R2); bias current ≤10nA enables high-impedance dividers. |
| 8 LBD | Open-drain low-battery output | Sinks up to 600µA when LBR <1.31V; requires external pullup for logic-level interface to µC or supervisor IC. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS micropower architecture | 70µA operating current independent of load or duty cycle - eliminates efficiency collapse at light loads common in bipolar regulators. |
| Integrated 1.31V bandgap reference | ±1.5% accuracy over full -40°C to +85°C range - enables stable output regulation without trimming or external references. |
| On-chip 525mA peak LX driver | 4Ω RON at +VS ≥6V - eliminates need for external MOSFET and gate driver in 3V–5V input, 5V–15V output boost converters. |
| Programmable oscillator via CX pin | Frequency adjustable from 100Hz to 75kHz using single ceramic capacitor - optimizes inductor size vs. EMI for each application. |
| Dual-function low-battery detector | 1.31V threshold with open-drain LBD output - supports both battery monitoring and adaptive frequency scaling (via LBR) to maintain output power at low VIN. |
| Pin compatibility with RC4191/2/3 | Direct drop-in replacement for Raytheon bipolar regulators - enables efficiency upgrade without PCB redesign in legacy systems. |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Wearable ECG patch powered by coin cell, requiring regulated 5V for ADC and BLE radio. IC Role / Device Role / Timing Role: Step-up regulator generating stable 5V from declining 2.0–3.0V battery, with LBD signaling end-of-life to host MCU. Use Value: 70µA quiescent current extends CR2032 life beyond 18 months; 85% efficiency minimizes self-heating in sealed enclosure. |
Use Scenario: Remote environmental monitor using AA batteries, logging temperature/humidity every 10 minutes. IC Role / Device Role / Timing Role: Boost converter supplying 5V to microcontroller and sensor interface during active measurement bursts. Use Value: Shutdown current ≤1µA ensures <1µA average system draw in sleep; programmable CX allows 10kHz operation to reduce EMI near analog sensors. |
| Uninterruptible 5V Power Supplies | Handheld Test Equipment |
Use Scenario: Embedded controller board with AC adapter + NiMH backup, requiring glitch-free 5V during line outage. IC Role / Device Role / Timing Role: Seamless switchover regulator maintaining 5V output from either adapter or battery, with LBD triggering backup mode. Use Value: No external diodes or OR-ing controllers needed; bootstrapped +VS operation lowers LX RON for higher efficiency during battery-only operation. |
Use Scenario: Battery-powered multimeter needing clean 5V for precision ADC and LCD backlight. IC Role / Device Role / Timing Role: Primary DC-DC source converting 3V battery to regulated 5V, with VFB divider enabling ±0.5% output accuracy. Use Value: ±1.5% reference accuracy and low load regulation (0.5% max) ensure stable reference voltage for 16-bit measurements. |
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 |
|---|---|---|---|
| MAX630ESA | Same pinout, identical architecture, but ±1.5% output voltage accuracy vs. MAX4193ESA's ±2.5% over temp; slightly higher supply current (90µA typ vs. 70µA). | Preferred where tighter output tolerance is required without trimming; less suitable for ultra-low-IQ designs. | Select MAX630ESA if reference accuracy is prioritized over minimum quiescent current; both share same layout and external components. |
| TPS61040DRVR | Higher 28V input rating, 0.5A switch, but 100µA IQ; uses external compensation and lacks integrated LBD function. | Used in wider-input industrial apps; requires additional circuitry for battery monitoring. | Choose TPS61040DRVR only when >16.5V input or >525mA peak current is needed; MAX4193ESA offers simpler BOM and built-in supervision. |
Compared with MAX630ESA, MAX4193ESA trades minor reference accuracy for lower operating current and broader temperature-rated performance consistency; versus TPS61040DRVR, it delivers integrated supervision and lower IQ at the cost of input voltage headroom and peak current capability.
Availability
MAX4193ESA is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, uninterruptible 5V power supplies, and handheld test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4193ESA 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX4193ESA belongs to Maxim's micropower DC-DC converter product line, engineered specifically for battery-operated systems demanding ultra-low quiescent current, integrated supervision, and minimal external component count in compact form factors.
FAQ
What is the guaranteed operating temperature range for the MAX4193ESA?
The MAX4193ESA is specified for -40°C to +85°C ambient operation, as confirmed in the Ordering Information table and Electrical Characteristics section under "Operating Temperature Range." This industrial-grade rating ensures reliable performance in outdoor sensors, factory-floor controllers, and automotive cabin electronics where thermal extremes occur.
Can the MAX4193ESA be used to generate negative output voltages?
The MAX4193ESA itself is a positive-output step-up regulator and does not natively support inverting topologies. However, Figure 3 in the datasheet shows a +5V to ±15V implementation using an external center-tapped inductor and dual windings - the MAX4193ESA regulates the +15V rail while the -15V is derived passively and semiregulated. For true negative regulation, a dedicated inverting controller is required.
How does the low-battery detector in the MAX4193ESA interact with the main regulator function?
The low-battery detector in the MAX4193ESA operates independently of the main regulation loop: it continuously compares the voltage at LBR (Pin 1) to the internal 1.31V reference and asserts the open-drain LBD output (Pin 8) when below threshold. This signal can trigger system-level actions (e.g., shutdown or alert) without affecting LX switching or output voltage stability.
Is the MAX4193ESA pin-compatible with the MAX630ESA?
Yes - the MAX4193ESA and MAX630ESA share identical pin configuration, electrical behavior, and package outline per the Pin Configuration diagram and Ordering Information table. Both are 8-pin SO devices with matching pin functions (LBR, CX, LX, GND, +VS, IC, VFB, LBD), enabling direct substitution where reference accuracy and quiescent current requirements align.
What external components are mandatory for basic operation of the MAX4193ESA?
Four external components are mandatory: an inductor (e.g., 470µH) between LX and output, a catch diode (e.g., 1N4148) from LX to output, a feedback resistor divider (R1/R2) from output to VFB and ground, and an oscillator capacitor (e.g., 47pF) from CX to ground. Optional but recommended: input bypass capacitor and LBD pullup resistor.
MAX4193ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4193ESA FAQ
1.How can I place an order for MAX4193ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4193ESA 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 MAX4193ESA reliable?
The price and inventory of MAX4193ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4193ESA is usually 5 days.
3.What payment methods are accepted for MAX4193ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4193ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4193ESA?
MAX4193ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4193ESA 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 MAX4193ESA?
For technical support, including MAX4193ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4193ESA requirements.
6.How does Aetrix verify that MAX4193ESA is sourced from the original manufacturer or authorized distributors?
All MAX4193ESA 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 MAX4193ESA meets industry standards.
7.What is the process for return or replacement of MAX4193ESA?
All MAX4193ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4193ESA, 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 MAX4193ESA part is unused and in its original packaging.
Return procedure for MAX4193ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4193ESA Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
