My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1830EEE+
- Part No.:
- MAX1830EEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1830EEE+.pdf
- Description:
- IC REG BUCK ADJ 3A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1830EEE+ from Maxim Integrated is a 3A, 1MHz synchronous step-down DC-DC regulator with internal PMOS/NMOS switches, designed for low-voltage conversion in notebook/subnotebook systems. It delivers preset +2.5V, +1.8V, or +1.5V outputs (pin-selectable via FBSEL), supports adjustable output from +1.1V to VIN, operates from +3V to +5.5V input, and achieves up to 94% efficiency at 3A load.
For engineers reviewing the MAX1830EEE+ datasheet, MAX1830EEE+ pinout, MAX1830EEE+ application, or MAX1830EEE+ equivalent, this page provides verified technical context, confirmed pin functions, real-world efficiency curves, validated alternative options, and supply-chain support details specific to the QSOP-16 packaged MAX1830EEE+ variant.
Technical Context
The MAX1830EEE+ uses a current-mode, constant-off-time PWM control architecture with Idle Mode™ for light-load efficiency optimization. Its internal 45mΩ PMOS and 55mΩ NMOS switches eliminate external Schottky diodes and enable continuous 3A output with <330mV dropout at full load.
Switching frequency is resistor-programmable up to 1MHz via TOFF pin; off-time determines frequency based on VIN, VOUT, and internal switch voltage drops. The device enters 100% duty-cycle mode near dropout and features internal digital soft-start (256-cycle ramp) and thermal shutdown at 165°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports CPU I/O and chipset rails without external current boosting |
| Input Voltage Range | +3.0V to +5.5V - compatible with standard 3.3V/5V system rails and battery-backed supplies |
| Preset Output Voltages | +2.5V, +1.8V, +1.5V (FBSEL-configurable) - matches common core/logic voltage requirements |
| Adjustable Output Range | +1.1V to VIN - enables custom low-voltage rails down to sub-1.2V with external divider |
| Efficiency | Up to 94% at 3A - achieved via synchronous rectification and low RDS(on) internal switches |
| Switching Frequency | Up to 1MHz - allows compact 1.5µH inductors and reduces EMI filtering burden |
| Reference Accuracy | ±1.5% over -40°C to +85°C - ensures stable regulation across industrial temperature range |
| Shutdown Current | <1µA - enables ultra-low-power system sleep states without leakage concerns |
Pinout & Package
MAX1830EEE+ is housed in a 16-pin QSOP package (JEDEC MS-013AC, 3.9mm × 4.9mm, 0.635mm pitch) with exposed thermal pad connected internally to PGND pins (13, 15). Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX (Pins 1, 3, 14, 16) | Switch node | Drain connection of internal PMOS/NMOS switches; connects directly to inductor and output capacitor |
| IN (Pins 2, 4) | Main power input | Supplies internal PMOS switch; requires local 22µF ceramic input capacitor within 5mm |
| SHDN (Pin 5) | Enable/disable control | Active-low logic input; pulls supply current below 1µA when grounded |
| COMP (Pin 6) | Loop compensation | Connects to transconductance amplifier output; requires 470pF capacitor to VCC for stability |
| TOFF (Pin 7) | Off-time programming | Resistor-to-GND sets constant off-time (0.4–5.0µs), determining switching frequency up to 1MHz |
| FB (Pin 8) | Voltage feedback | Senses output voltage directly (fixed mode) or via resistive divider (adjustable mode); bias current <360nA |
| GND (Pin 9) | Analog ground | Reference for internal analog circuitry; must be separated from PGND in high-current layouts |
| REF (Pin 10) | Internal reference output | 1.100V ±1.5% reference; bypassed with 1µF capacitor to GND for noise immunity |
| FBSEL (Pin 11) | Output voltage selection | Configures preset output: GND = adjustable, VCC = +2.5V, REF = +1.8V, floating = +1.5V |
| VCC (Pin 12) | Analog supply | Powers internal analog blocks; bypassed with 10Ω + 2.2µF RC filter to reduce noise coupling |
| PGND (Pins 13, 15) | Power ground | Source connection of internal NMOS switch; ties to LX return path and inductor ground |
Key Features
| Feature | Design Value |
|---|---|
| Internal synchronous switches | 45mΩ PMOS + 55mΩ NMOS at VIN = +4.5V - eliminates Schottky diode, reduces conduction loss, improves thermal performance |
| Idle Mode™ operation | Skips pulses below 0.14–1.0A load threshold - maintains >85% efficiency at 10mA while reducing gate charge losses |
| Digital soft-start | 256-cycle ramp (≈1ms typical) - limits inrush current during startup without external components |
| 100% duty-cycle mode | Enables dropout operation down to VOUT + IOUT × RON,P - sustains regulation when VIN approaches VOUT |
| Thermal shutdown | 165°C trip with 15°C hysteresis - protects against sustained overload or poor PCB heatsinking |
| Output short-circuit protection | Forces ~4× tOFF off-time when VOUT < VOUT(NOM)/4 - prevents destructive current runaway |
Applications
| CPU Core Power Delivery | Chipset I/O Supply |
|---|---|
Use Scenario: Providing regulated +1.8V rail to Intel Pentium M or AMD Mobile Athlon XP processor cores in subnotebook platforms. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 3A continuous current with fast transient response to dynamic CPU load changes. Use Value: Achieves 92% efficiency at 2A load with 5V input, reducing thermal load on compact motherboard layouts. |
Use Scenario: Generating +2.5V supply for northbridge/southbridge chipsets requiring tight voltage tolerance and low noise. IC Role / Device Role / Timing Role: Fixed-output buck converter with ±1.5% reference accuracy and integrated soft-start for clean power sequencing. Use Value: Eliminates need for external MOSFET drivers and Schottky diodes, saving 4–6 mm² PCB area per rail. |
| Notebook System Memory | Embedded Controller Rail |
Use Scenario: Powering DDR SDRAM modules requiring stable +2.5V at up to 2.5A with minimal output ripple. IC Role / Device Role / Timing Role: High-efficiency synchronous buck regulator operating in constant-off-time mode for rapid line/load transient recovery. Use Value: Delivers <50mVpp output ripple with 120µF output capacitance, meeting JEDEC DDR timing margin requirements. |
Use Scenario: Supplying +1.5V to embedded controllers (ECs) in laptop EC firmware subsystems with deep-sleep capability. IC Role / Device Role / Timing Role: Adjustable-output regulator configured for +1.5V with shutdown current <1µA to preserve battery life. Use Value: Enables 30-day shelf-life in shipped devices by minimizing quiescent drain from backup battery circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1623EEE+ | 1A output, 500kHz max frequency, no Idle Mode, requires external Schottky diode | Lower cost for <1A loads; unsuitable for 3A CPU I/O rails due to current limit and efficiency gap | Select MAX1623EEE+ only for legacy designs where footprint compatibility exists and load current remains ≤0.8A |
| TPS5430DDAR | 3A output, 500kHz fixed frequency, external MOSFETs required, no integrated NMOS sync rectifier | Higher BOM count and layout complexity; lower light-load efficiency due to lack of pulse-skipping mode | Choose TPS5430DDAR if design requires programmable frequency independent of RTOFF or needs higher VIN tolerance (>6V) |
Compared with MAX1623EEE+, MAX1830EEE+ delivers 3× output current and 12% higher peak efficiency; compared with TPS5430DDAR, it reduces component count by two MOSFETs and improves light-load efficiency by 18–22% via Idle Mode™.
Availability
MAX1830EEE+ is available at Aetrix Electronics and suitable for notebook power management, CPU I/O supplies, and chipset voltage regulation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1830EEE+ 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 computing, communications, and industrial applications.
The MAX1830EEE+ belongs to Maxim's low-voltage synchronous buck regulator product line, engineered specifically for space-constrained portable computing systems requiring high efficiency, small solution size, and robust thermal performance.
FAQ
What output voltages does the MAX1830EEE+ support?
The MAX1830EEE+ supports three preset outputs (+2.5V, +1.8V, +1.5V) selected via FBSEL pin configuration, and an adjustable range from +1.1V to VIN using an external resistor divider on the FB pin. All configurations maintain ±1.5% output accuracy across -40°C to +85°C, and the MAX1830EEE+ datasheet confirms these values under specified load and input conditions.
Does the MAX1830EEE+ require an external Schottky diode?
No, the MAX1830EEE+ integrates both a 45mΩ PMOS power switch and a 55mΩ NMOS synchronous rectifier switch, eliminating the need for an external Schottky diode. This integration reduces component count, improves efficiency (up to 94%), and simplifies layout - a key advantage confirmed in the MAX1830EEE+ functional diagram and electrical characteristics table.
How is switching frequency set on the MAX1830EEE+?
Switching frequency on the MAX1830EEE+ is set by a resistor (RTOFF) connected from the TOFF pin to GND, which programs the constant off-time (tOFF) between 0.4µs and 5.0µs. The resulting frequency depends on VIN, VOUT, and internal switch voltage drops, reaching up to 1MHz - a behavior explicitly defined in the MAX1830EEE+ design procedure and typical operating characteristics.
What is the purpose of Idle Mode™ in the MAX1830EEE+?
Idle Mode™ in the MAX1830EEE+ skips switching cycles under light loads (below 0.14–1.0A threshold), reducing gate-charge and transition losses to maintain high efficiency (>85% at 10mA). This proprietary feature is documented in the MAX1830EEE+ General Description and Detailed Description sections, distinguishing it from standard pulse-frequency modulation.
Can the MAX1830EEE+ operate in 100% duty cycle mode?
Yes, the MAX1830EEE+ automatically enters 100% duty-cycle mode when input voltage approaches output voltage, keeping the internal PMOS switch continuously on to sustain regulation. Dropout voltage equals IOUT × RON,P, and this behavior is verified in the MAX1830EEE+ Absolute Maximum Ratings and Detailed Description sections under "100% Duty-Cycle Operation".
MAX1830EEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.1V (1.5V, 1.8V, 2.5V)
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX1830EEE+ FAQ
1.How can I place an order for MAX1830EEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1830EEE+ 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 MAX1830EEE+ reliable?
The price and inventory of MAX1830EEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1830EEE+ is usually 5 days.
3.What payment methods are accepted for MAX1830EEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1830EEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1830EEE+?
MAX1830EEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1830EEE+ 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 MAX1830EEE+?
For technical support, including MAX1830EEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1830EEE+ requirements.
6.How does Aetrix verify that MAX1830EEE+ is sourced from the original manufacturer or authorized distributors?
All MAX1830EEE+ 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 MAX1830EEE+ meets industry standards.
7.What is the process for return or replacement of MAX1830EEE+?
All MAX1830EEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1830EEE+, 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 MAX1830EEE+ part is unused and in its original packaging.
Return procedure for MAX1830EEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1830EEE+ 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…
