My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1692EUB
- Part No.:
- MAX1692EUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1692EUB.pdf
- Description:
- IC REG BUCK ADJ 600MA 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,036
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1692EUB from Maxim Integrated is a low-noise, synchronous PWM step-down DC-DC converter optimized for Li-ion battery-powered wireless systems. It delivers up to 600mA output current with adjustable voltage (1.25V–VIN), operates from +2.7V to +5.5V input, features 750kHz fixed-frequency switching, and integrates P- and N-channel MOSFETs to eliminate external Schottky diodes - used in cellular phone baseband power rails.
For engineers reviewing the MAX1692EUB datasheet, MAX1692EUB pinout, MAX1692EUB application, or MAX1692EUB equivalent, key selection criteria include its 85µA quiescent current in PWM/PFM mode, 100% duty-cycle capability for low-dropout operation, ±1.2% reference accuracy, and 10-pin µMAX package with 1.11mm height for space-constrained handheld designs.
Technical Context
The MAX1692EUB employs slope-compensated current-mode PWM control with cycle-by-cycle current limiting, enabling stable regulation across 0–600mA load range and supporting 100% duty-cycle operation down to ~2.7V input. Its dual-mode architecture-forced PWM (SYNC/PWM = IN) and PWM/PFM (SYNC/PWM = GND)-allows harmonic control in RF-sensitive environments or extended battery life under light loads.
Internal synchronous rectification uses an N-channel MOSFET with NEGLIM comparator–controlled turn-off, eliminating reverse-current flow while maintaining regulation at zero load. The device integrates a 1.25V ±1.2% reference, feedback comparator, oscillator, and four current-sense comparators (PWM, PFM, NEGLIM, LIM) for comprehensive protection and mode management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +2.7V to +5.5V - supports single Li-ion (2.9–4.2V) or triple NiMH/NiCd batteries without external regulators. |
| Output Voltage Range | 1.25V to VIN - adjustable via external resistor divider; enables 1.8V CPU I/O, 2.5V chipset, or 3.3V transceiver rails. |
| Max Output Current | 600mA - guaranteed with LIM = IN; sufficient for baseband processors and RF transmitters in PDAs and handy-terminals. |
| Oscillator Frequency | 750kHz (±100kHz) - fixed-frequency operation simplifies EMI filtering; synchronizable from 500kHz to 1000kHz via SYNC/PWM pin. |
| Quiescent Current | 85µA in PWM/PFM mode - extends battery runtime during standby or light-load operation in portable devices. |
| Reference Accuracy | ±1.2% at 1.25V - ensures tight output voltage tolerance (e.g., ±15mV at 1.25V) without trimming components. |
| Shutdown Current | <0.1µA - reduces system leakage during deep sleep; output goes high-impedance when SHDN = GND. |
| Package | 10-pin µMAX (3mm × 3mm, 1.11mm height) - surface-mount, thermally enhanced package for compact PCB layouts. |
Pinout & Package
The MAX1692EUB is housed in a 10-pin µMAX package with exposed thermal pad (PGND-connected) and 0.5mm pitch. Pin 1 is marked by a dot; top-view pin numbering follows standard µMAX layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Primary supply input (+2.7V to +5.5V); requires 10µF bulk capacitor to PGND for ripple suppression. |
| 2 BP | Bypass Supply | Internally tied to IN; bypass with 0.1µF ceramic capacitor to GND for internal bias stability. |
| 3 GND | Analog Ground | Reference ground for REF, FB, and control circuitry; must be star-connected to PGND at single point. |
| 4 REF | Reference Output | 1.25V ±1.2% precision reference; supplies up to 50µA; bypass with 0.22µF capacitor to GND. |
| 5 FB | Feedback Input | Resistor-divider node sensing output voltage; high-impedance input (±50nA) enables accurate regulation. |
| 6 LIM | Current-Limit Select | Logic input: connect to IN for 600mA limit, GND for 250mA limit - sets internal P-channel overcurrent threshold. |
| 7 SYNC/PWM | Mode Control | Active-low input: GND enables PWM/PFM mode; IN forces fixed-frequency PWM; external clock syncs switching. |
| 8 SHDN | Shutdown Control | Active-low enable: GND disables regulator (IQ < 0.1µA); IN enables normal operation. |
| 9 LX | Switch Node | Drain connection of internal P- and N-channel MOSFETs; connects to inductor; high dv/dt node requiring short trace routing. |
| 10 PGND | Power Ground | High-current return path for LX and internal switches; must be low-inductance plane connected to IN capacitor ground. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated N-channel MOSFET eliminates Schottky diode loss, improving efficiency to 95% at 3.6V→3.3V/600mA. |
| Four-Mode Operation | Forced PWM, synchronizable PWM, PWM/PFM (Idle Mode™), and shutdown - dynamically optimizes noise vs. efficiency trade-offs. |
| 100% Duty-Cycle Capability | Enables dropout operation down to VIN − VOUT ≈ 280mV @ 600mA, critical for Li-ion discharge curve tracking. |
| No Minimum Load Requirement | Synchronous rectifier passes reverse inductor current in forced PWM mode, allowing stable regulation at zero load. |
| Low-Noise Fixed-Frequency PWM | 750kHz switching with controlled harmonics simplifies post-filtering; measured noise <1mVp-p in 100kHz–10MHz band. |
| Thermally Enhanced µMAX | Exposed thermal pad on underside improves power dissipation; 444mW max continuous power at +70°C ambient. |
Applications
| Cellular Phone Baseband Power | CPU I/O Supply |
|---|---|
Use Scenario: Powers ARM-based baseband processors and memory interfaces in GSM/CDMA handsets operating from single Li-ion cells. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 1.8V/600mA with low ripple and fast transient response to handle burst-mode transmission. Use Value: Enables 85µA quiescent current in idle mode and 95% peak efficiency, extending talk time by >12% versus non-synchronous alternatives. | Use Scenario: Supplies configurable I/O voltage rails (1.8V, 2.5V, 3.3V) for SoC peripherals in notebook chipsets and embedded controllers. IC Role / Device Role / Timing Role: Adjustable-output buck converter with precise 1.25V reference and ±1.2% accuracy for stable logic-level generation. Use Value: Eliminates need for external reference or trimming resistors; 10-pin µMAX footprint saves >30% board area versus SO-8 alternatives. |
| PDA & Handy-Terminal Logic Rails | Battery-Operated Medical Sensors |
Use Scenario: Provides clean, low-noise 2.5V supply for LCD drivers and touch-screen controllers in handheld terminals with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise PWM regulator with synchronizable frequency to avoid interference with 2.4GHz Bluetooth/WiFi bands. Use Value: SYNC/PWM pin allows alignment of switching edges with RF transmit windows, reducing conducted emissions by 15dB. | Use Scenario: Powers ultra-low-power analog front-ends and ADCs in portable ECG or glucose monitors running on coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: High-efficiency buck converter with sub-100µA quiescent current in PWM/PFM mode for multi-week battery life. Use Value: 0.1µA shutdown current and 100% duty-cycle operation below 3V input ensure full utilization of battery capacity down to 2.7V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3MHz switching frequency, 300mA output, 2.05V–6.5V input; smaller 6-pin WSON package but lower current rating. | Targeted at higher-frequency, lower-current apps like wearables; lacks PFM mode and 100% duty-cycle support. | Select when board space is critical and load ≤300mA; not suitable for 600mA cellular baseband rails. |
| ADP2302ARMZ-R7 | Fixed 3.3V output, 800mA rating, 3V–20V input; no adjustable output or SYNC capability; uses external diode. | Designed for industrial fixed-voltage supplies; lacks Li-ion optimization, low-noise modes, and compact µMAX footprint. | Choose only for non-battery, fixed-output systems where size and efficiency are secondary to cost. |
Compared with TPS62231DRYR and ADP2302ARMZ-R7, the MAX1692EUB uniquely combines 600mA output, 1.25V–VIN adjustability, 750kHz low-noise PWM, PWM/PFM mode, and 10-pin µMAX packaging - making it irreplaceable for space-constrained, battery-powered wireless applications requiring dynamic efficiency and EMI control.
Availability
MAX1692EUB is available at Aetrix Electronics and suitable for cellular phone baseband power, CPU I/O supplies, PDA logic rails, and battery-operated medical sensors requiring stable component supply across automotive-grade temperature ranges.
Supply support for MAX1692EUB 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, communications, and consumer markets.
The MAX1692EUB belongs to Maxim's low-noise, high-efficiency DC-DC converter product line, designed specifically for battery-powered wireless systems where EMI, size, and quiescent current are critical constraints.
FAQ
What is the maximum output current supported by the MAX1692EUB?
The MAX1692EUB guarantees 600mA output current when the LIM pin is connected to IN. With LIM tied to GND, the current limit drops to 250mA. This dual-threshold design allows flexible trade-offs between output capability and thermal management in compact layouts. The MAX1692EUB maintains regulation across this full range with ≤1.3% load regulation.
How does the MAX1692EUB achieve low-noise operation in sensitive RF applications?
The MAX1692EUB achieves low-noise operation through fixed-frequency 750kHz PWM switching, integrated synchronous rectification (eliminating diode noise), and slope-compensated current-mode control that suppresses subharmonic oscillation. Its SYNC/PWM pin allows external clock synchronization to avoid interference with IF bands - a feature confirmed in MAX1692EUB application circuits for cellular handsets.
Can the MAX1692EUB operate with a single Li-ion battery throughout its full discharge range?
Yes, the MAX1692EUB operates from +2.7V to +5.5V and supports 100% duty-cycle operation, enabling regulation down to input voltages only slightly above the output (e.g., 2.7V → 1.8V with ~280mV dropout). This matches the 2.7V–4.2V discharge curve of Li-ion cells, and its 85µA quiescent current in PWM/PFM mode maximizes usable battery capacity.
What is the purpose of the BP pin on the MAX1692EUB?
BP (Bypass) is an internal supply rail bypass pin tied directly to IN inside the MAX1692EUB die. It must be decoupled to GND with a 0.1µF ceramic capacitor placed adjacent to the pin. This stabilizes internal bias circuitry and prevents oscillation - omission causes erratic startup or regulation failure, as documented in MAX1692EUB layout guidelines.
Does the MAX1692EUB require an external Schottky diode?
No, the MAX1692EUB does not require an external Schottky diode. It integrates both P-channel (high-side) and N-channel (synchronous rectifier) MOSFETs, enabling full synchronous rectification. This design achieves up to 95% efficiency and eliminates reverse-recovery noise and forward-voltage drop associated with discrete diodes - a key specification confirmed in MAX1692EUB's General Description and Features sections.
MAX1692EUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 600mA
- Frequency - Switching:
- 750kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX1692EUB FAQ
1.How can I place an order for MAX1692EUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1692EUB 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 MAX1692EUB reliable?
The price and inventory of MAX1692EUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1692EUB is usually 5 days.
3.What payment methods are accepted for MAX1692EUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1692EUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1692EUB?
MAX1692EUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1692EUB 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 MAX1692EUB?
For technical support, including MAX1692EUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1692EUB requirements.
6.How does Aetrix verify that MAX1692EUB is sourced from the original manufacturer or authorized distributors?
All MAX1692EUB 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 MAX1692EUB meets industry standards.
7.What is the process for return or replacement of MAX1692EUB?
All MAX1692EUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX1692EUB, 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 MAX1692EUB part is unused and in its original packaging.
Return procedure for MAX1692EUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1692EUB 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…
