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Analog Devices Inc. LTC3336ACBZ-2-R7
- Part No.:
- LTC3336ACBZ-2-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
LTC3336ACBZ-2-R7.pdf
- Description:
- IC REG BUCK ADJ 250MA 12WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
LTC3336ACBZ-2-R7 from Analog Devices is a nanopower hysteretic buck DC/DC converter delivering up to 250mA output current from 2.5V–15V input, with 65nA quiescent current in regulation at no load (VOUT < 2.4V), pin-selectable 100mA/300mA peak input current, and 16 fixed output voltages (1.2V–5.0V). It targets primary battery-powered systems such as remote industrial sensors and asset trackers where ultra-low IQ and programmable peak current are critical.
For engineers reviewing the LTC3336ACBZ-2-R7 datasheet, LTC3336ACBZ-2-R7 pinout, LTC3336ACBZ-2-R7 application, or LTC3336ACBZ-2-R7 equivalent, key selection criteria include its WLCSP package (1.18mm × 1.62mm), IPEAK = 100mA/300mA configuration, PGOOD output, dropout mode operation, and sleep/wake-up thresholds with ±0.3% hysteresis around VOUT.
Technical Context
The LTC3336ACBZ-2-R7 implements a hysteretic control architecture with internal P-channel and N-channel MOSFETs, enabling efficient energy transfer via controlled inductor current ramping between IPEAK and IVALLEY. Its sleep mode monitors VOUT using a dedicated comparator, reducing VIN quiescent current to 65nA by disabling switching until VOUT falls below the sleep threshold.
Unlike conventional PWM regulators, it operates only in burst mode-charging COUT above regulation and then entering deep sleep-making it ideal for micropower applications where average load current is ≤10µA. The device supports bootstrapped INTVCC generation from VOUT for VOUT ≥ 2.4V, further lowering input supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 15V - supports 1× to 3× LiSOCl₂, 3× to 8× AAA primary batteries without external LDO pre-regulation. |
| Max Output Current | 250mA at 300mA IPEAK setting - delivers full rated load with 0.53Ω P-MOSFET RDS(ON) and 0.32Ω N-MOSFET RDS(ON) at 5V VOUT. |
| VIN Quiescent Current | 65nA (VOUT < 2.4V, no load) - enables >10-year battery life in always-on sensor nodes powered by 2.4Ah LiSOCl₂ cells. |
| Output Voltage Options | 16 fixed values (1.2V–5.0V) - selected via 4-pin-strapped OUT[3:0] inputs; eliminates need for external feedback resistors or digital interface. |
| IPEAK Selection | 100mA or 300mA only - configured via IPK0 (IPK1 internally tied to INTVCC in WLCSP variant), matching battery capacity curves for optimal runtime. |
| Power Good Output | PGOOD referenced to VOUT, 90–95% threshold - provides system-level power sequencing and brown-out detection without external comparators. |
| Package | 12-ball WLCSP (1.18mm × 1.62mm) - ultra-compact footprint for space-constrained IoT edge devices and wearable electronics. |
Pinout & Package
Package: 12-ball WLCSP (1.18mm × 1.62mm), MSL Level 1, –40°C to +125°C operating junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (B3) | Main input voltage supply | Accepts 2.5V–15V; requires ≥0.1μF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency noise and transient droop. |
| EN (A1) | Enable control input | Logic-high referenced to INTVCC; pulls VOUT to GND via 10kΩ resistor when low, enabling fast shutdown and battery isolation. |
| IPK0 (B2) | Peak current select bit | With IPK1 (internally tied to INTVCC), selects 100mA (IPK0 = 0) or 300mA (IPK0 = 1); sets inductor current limit to match battery discharge profile. |
| INTVCC (B1) | Internal logic supply rail | Generated from VOUT if ≥2.4V, else regulated to ~2V; supplies EN/IPK logic; requires ≥100nF external bypass in WLCSP. |
| PGOOD (C1) | Regulation status flag | Open-drain output referenced to VOUT; asserts high when VOUT is within ±2.5% of target; drives microcontroller wake-up interrupt directly. |
| OUT3–OUT0 (D1–C2) | Output voltage programming bits | 4-bit static code (e.g., 0100 = 2.5V); tied to INTVCC/VOUT for '1', GND for '0'; supports pin-strapped power-up defaults (1.2V/1.8V/2.5V/3.0V). |
| VOUT (C3) | Regulated output and sense node | Delivers up to 250mA; also serves as logic reference for OUT[3:0] and PGOOD; includes 1MΩ overvoltage clamp to 5% above setpoint. |
| SW (A3) | Buck switch node | Connects to inductor; switches P-MOSFET (100mA/300mA RDS(ON): 1.6Ω/0.53Ω) and N-MOSFET (0.96Ω/0.32Ω) to regulate energy transfer. |
| GND (A2) | Ground reference and thermal pad | Exposed ball; must be soldered to PCB ground plane for electrical integrity and thermal dissipation (θJA = 83°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65nA VIN IQ at no load (VOUT < 2.4V) extends primary battery life beyond 10 years in 10µA average-load applications. |
| Hysteretic sleep/wake control | ±0.3% hysteresis window around VOUT enables predictable sleep time calculation (tSLEEP = COUT·VOUT·0.6%/ILOAD) for precise energy budgeting. |
| Pin-strapped IPEAK selection | Dual IPEAK options (100mA/300mA) allow matching to battery's maximum sustainable current without firmware or I²C overhead. |
| Integrated P/N MOSFETs | On-chip switches eliminate external FETs and gate drivers; RDS(ON) optimized per IPEAK setting to minimize conduction loss across load range. |
| Bootstrapped INTVCC | When VOUT ≥ 2.4V, INTVCC derives from VOUT, reducing VIN IQ by factor of VIN/VOUT - e.g., 3.6V input yields ~60% lower IQ vs. VOUT < 2.4V case. |
Applications
| Remote Industrial Sensors | Asset Trackers |
|---|---|
Use Scenario: Battery-powered ultrasonic flow meter operating in unattended field locations for 10+ years. IC Role / Device Role / Timing Role: Primary buck regulator supplying 3.3V to MCU, RF transceiver, and analog front-end from 3.6V LiSOCl₂ cell. Use Value: 65nA IQ and 100mA IPEAK setting align with LiSOCl₂'s low-current, high-impedance discharge curve, maximizing usable capacity. | Use Scenario: GPS-enabled logistics tag reporting position every 4 hours using BLE or NB-IoT. IC Role / Device Role / Timing Role: Power management IC delivering 2.8V to GPS module and 1.8V to MCU core during active bursts. Use Value: Pin-strapped dual VOUT (via OUT[3:0]) and PGOOD enable seamless voltage domain sequencing without PMIC complexity. |
| Electronic Door Locks | SmartMesh® Applications |
Use Scenario: Wireless smart lock actuating solenoid upon authenticated BLE command, drawing 200mA peak for 500ms. IC Role / Device Role / Timing Role: High-efficiency buck converter providing 5.0V to motor driver from two-series alkaline cells (3.0V nominal). Use Value: 300mA IPEAK capability and 0.53Ω P-MOSFET RDS(ON) ensure minimal voltage drop during solenoid activation, preventing lock failure. | Use Scenario: Self-healing wireless sensor network node with sub-10µA average current and mesh routing duty cycle. IC Role / Device Role / Timing Role: Nanopower supply for SmartMesh transceiver (LTP590x) and microcontroller, maintaining VOUT regulation during RF transmit bursts. Use Value: Sleep-mode hysteresis and 250mA deliverable current support intermittent 100ms RF transmissions while sustaining multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DRVR | 60nA IQ, 1.8V–6.5V input, 1.8V–5.5V output; uses constant-frequency PWM, not hysteretic control; requires external feedback resistors. | Lower IQ but lacks pin-strapped VOUT/IPEAK; needs PCB layout space for resistors and may require firmware tuning for light-load efficiency. | Select when fixed-frequency EMI profile is required and design team can accommodate resistor-based VOUT programming. |
| MAX17691ATP+ | 1.2µA IQ (higher than LTC3336), 4.5V–60V input, 3.3V/5V fixed outputs; integrated high-side FET; no programmable IPEAK or sleep hysteresis. | Targets higher-input industrial rails (e.g., 24V PLCs); unsuitable for primary battery systems due to 10× higher IQ and minimum 4.5V VIN. | Select for wide-input industrial power rails where 1.2µA IQ is acceptable and fixed 3.3V/5V outputs suffice. |
Compared with TPS62840DRVR and MAX17691ATP+, the LTC3336ACBZ-2-R7 uniquely combines ultra-low 65nA IQ, pin-strapped 100mA/300mA IPEAK, and 16 VOUT options in a 1.18mm × 1.62mm WLCSP-enabling zero-resistor, zero-firmware power solutions for long-life primary-battery IoT endpoints.
Availability
LTC3336ACBZ-2-R7 is available at Aetrix Electronics and suitable for remote industrial sensors, asset trackers, and electronic door locks requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LTC3336ACBZ-2-R7 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.
The LTC3336 product line is designed specifically for ultra-low-power, primary-battery-powered IoT edge devices-emphasizing nanopower operation, programmable peak current, and minimal external components to reduce size and cost in space- and energy-constrained applications.
FAQ
What is the maximum deliverable output current for LTC3336ACBZ-2-R7?
The LTC3336ACBZ-2-R7 delivers up to 250mA when configured for the 300mA IPEAK setting. At the 100mA IPEAK setting, the maximum deliverable output current is 83mA. These values are confirmed in the Electrical Characteristics table under "Deliverable Output Current" and reflect actual load capability before regulation loss occurs.
How does the LTC3336ACBZ-2-R7 achieve 65nA input quiescent current?
The LTC3336ACBZ-2-R7 achieves 65nA VIN quiescent current by entering a deep sleep state when VOUT is in regulation and load current is near zero. In this state, switching is disabled, internal bias currents are minimized, and for VOUT settings < 2.4V, the INTVCC rail is generated from an ultra-low-power bandgap reference-not from VOUT.
Can LTC3336ACBZ-2-R7 be used with a 2.4V output setting?
Yes, LTC3336ACBZ-2-R7 supports a 2.4V output setting (OUT[3:0] = 0101). At this setting, the sleep threshold is 2.328V and wake-up threshold is 2.472V (±0.3% hysteresis), and VIN quiescent current drops further because internal circuits bootstrap from VOUT, reducing IQ below 65nA as specified in the Electrical Characteristics table.
What is the function of the PGOOD pin on LTC3336ACBZ-2-R7?
PGOOD on LTC3336ACBZ-2-R7 is an open-drain output referenced to VOUT that asserts high when VOUT is within 90–95% of its programmed value. It provides hardware-level power-good signaling for system reset control or microcontroller wake-up, eliminating need for external monitoring circuitry.
Does LTC3336ACBZ-2-R7 support dynamic output voltage changes during operation?
Yes, LTC3336ACBZ-2-R7 supports dynamic VOUT changes by reconfiguring the OUT[3:0] pins after startup. The Applications Information section describes alternate hookups using GPIOs to toggle these pins, enabling runtime voltage scaling-for example, stepping from 1.8V (MCU core) to 3.3V (RF transceiver) during transmission bursts.
LTC3336ACBZ-2-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 250mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLCSP (1.18x1.62)
LTC3336ACBZ-2-R7 FAQ
1.How can I place an order for LTC3336ACBZ-2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3336ACBZ-2-R7 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 LTC3336ACBZ-2-R7 reliable?
The price and inventory of LTC3336ACBZ-2-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3336ACBZ-2-R7 is usually 5 days.
3.What payment methods are accepted for LTC3336ACBZ-2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3336ACBZ-2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3336ACBZ-2-R7?
LTC3336ACBZ-2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3336ACBZ-2-R7 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 LTC3336ACBZ-2-R7?
For technical support, including LTC3336ACBZ-2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3336ACBZ-2-R7 requirements.
6.How does Aetrix verify that LTC3336ACBZ-2-R7 is sourced from the original manufacturer or authorized distributors?
All LTC3336ACBZ-2-R7 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 LTC3336ACBZ-2-R7 meets industry standards.
7.What is the process for return or replacement of LTC3336ACBZ-2-R7?
All LTC3336ACBZ-2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3336ACBZ-2-R7, 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 LTC3336ACBZ-2-R7 part is unused and in its original packaging.
Return procedure for LTC3336ACBZ-2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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