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Renesas ZSPM4523AA1R
- Part No.:
- ZSPM4523AA1R
- Manufacturer:
- Renesas
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ZSPM4523AA1R.pdf
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Product details
Overview
ZSPM4523AA1R from Integrated Device Technology (IDT) is a synchronous DC/DC switching super capacitor charger IC with integrated high-side and low-side MOSFETs, temperature-independent MPPT algorithm, I²C programmable termination voltage (2.48–2.74 V ±1%) and charge current (50–1500 mA), and full fault protection. It operates from 3.2–7.2 V PV input to deliver up to 1.5 A at up to 92% efficiency in solar-powered supercapacitor energy storage systems.
For engineers reviewing the ZSPM4523AA1R datasheet, ZSPM4523AA1R pinout, ZSPM4523AA1R application, or ZSPM4523AA1R equivalent, key selection criteria include its 1 MHz switching frequency enabling compact LC filtering, reverse-current blocking at VOUT, programmable full-charge timer (200–1400 min), and open-drain NFLT fault reporting for system-level supervision.
Technical Context
The ZSPM4523AA1R implements a current-mode synchronous buck topology with internal gate drivers, oscillator, error amplifier, and MPP & current control block. Its MPPT engine continuously adjusts input voltage to maximize power extraction from photovoltaic cells without temperature drift compensation dependency.
Operation includes Full-Charge Mode (MPPT-controlled duty cycle) transitioning to Constant Voltage Mode upon reaching user-programmed VOUT termination, plus robust protection: VIN under-voltage lockout (3.15 V threshold, 200 mV hysteresis), VOUT over-voltage shutdown (102% of setpoint), cycle-by-cycle current limiting (2.5 A peak), and thermal shutdown (170°C trip, 160°C recovery).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.2 V to 7.2 V - supports direct connection to small-to-mid-size photovoltaic panels without pre-regulation. |
| Switching Frequency | 1 MHz ±10% - enables use of 4.7 µH inductor and 4.7 µF ceramic output capacitor for minimal board area. |
| Max Output Current | 1.5 A continuous - sufficient for rapid charging of 1–10 F supercapacitors in portable solar applications. |
| Termination Voltage | 2.48 V to 2.74 V ±1% - digitally programmable via I²C CONFIG1 register for precise supercapacitor cell balancing. |
| Charge Current Range | 50 mA to 1500 mA - user-configurable in 16 steps via I²C CONFIG3 register to match supercapacitor ESR and thermal limits. |
| Quiescent Current (Disabled) | 10 µA typical - preserves stored energy in supercapacitor during nighttime or low-light conditions. |
| Protection Features | VIN UVLO, VOUT OVP, thermal shutdown, cycle-by-cycle current limit - eliminates need for external supervision circuitry. |
Pinout & Package
Packaged in a thermally enhanced 16-pin PQFN (4 mm × 4 mm) with exposed thermal pad for junction-to-board heat transfer (θJA = 50°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Photovoltaic input supply | Accepts unregulated 3.2–7.2 V PV source; feeds internal VDD regulator and power switches. |
| VOUT | Regulated output to supercapacitor | Delivers programmable constant-voltage/constant-current charge; includes reverse-current blocking. |
| SW | Switch node | Connects to external LOUT inductor; carries high-frequency pulsed current between HS and LS FETs. |
| PGND | Power ground | High-current return path for inductor and internal power switches; separate from signal GND. |
| GND | Signal ground | Reference for EN, SCL, SDA, NFLT, VSENSE; must be connected to PGND at single point. |
| EN | Enable control input | Active-high logic input (VIH ≥ 2.2 V); disables device and reduces IQ to 10 µA when low. |
| NFLT | Inverted fault indicator | Open-drain output pulled low on VOUT_OV, TSD, or VIN_UV faults; requires external pull-up. |
| SCL / SDA | I²C serial interface | Standard/fast-mode (100/400 kHz) bidirectional bus for configuration and status readback. |
| VSENSE | Output voltage sense | High-impedance feedback input for precision VOUT regulation; connects directly across supercapacitor. |
| RSENSE | Current sense resistor | Connects between PGND and supercapacitor negative terminal; sets charge current scaling. |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-independent MPPT | Eliminates thermal drift in maximum power point tracking-ensures consistent solar harvest across -40°C to 125°C ambient. |
| VOUT reverse-current blocking | Prevents supercapacitor discharge back into PV panel at night or low irradiance-no external diode required. |
| I²C programmable registers | EEPROM-backed CONFIG1 (termination voltage) and CONFIG3 (charge current) enable field reconfiguration without hardware change. |
| Integrated power switches | 250 mΩ HS and 150 mΩ LS MOSFETs reduce conduction loss and eliminate external switch layout complexity. |
| Full fault supervision | NFLT pin and STATUS register (VOUT_OV, TSD, VIN_UV bits) provide real-time diagnostics for system host controller integration. |
Applications
| Portable Solar Chargers | Off-Grid Remote Sensors |
|---|---|
Use Scenario: Compact solar-powered USB chargers for outdoor gear and emergency kits using 1–5 F supercapacitors as energy buffer. IC Role / Device Role / Timing Role: Primary MPPT-controlled supercapacitor charger managing intermittent solar input and delivering stable 2.7 V output for downstream DC-DC conversion. Use Value: Enables >90% energy capture across varying light conditions while eliminating battery aging concerns and supporting 500k+ charge cycles. | Use Scenario: Wireless environmental monitoring nodes deployed in forests or agricultural fields powered by miniature PV panels and supercapacitors. IC Role / Device Role / Timing Role: Energy harvesting front-end regulating PV input to maintain supercapacitor voltage within safe operating range for ultra-low-power MCU wake-up cycles. Use Value: Delivers 10 µA shutdown current and programmable full-charge timer to extend operational lifetime between maintenance intervals. |
| Industrial IoT Gateways | Backup Power Modules |
Use Scenario: Edge gateways in smart building systems requiring reliable local energy storage for short-term grid outage resilience. IC Role / Device Role / Timing Role: High-efficiency DC/DC charger interfacing rooftop micro-PV arrays to 10–50 F supercapacitor banks for seamless transition during AC loss. Use Value: 1.5 A output capability and 92% peak efficiency minimize thermal rise in enclosed enclosures while supporting fast recharge after discharge events. | Use Scenario: Non-volatile memory backup circuits in industrial controllers where lithium batteries pose safety or lifecycle risks. IC Role / Device Role / Timing Role: Precision termination voltage control (±1%) ensures optimal supercapacitor voltage stress management during long-term float charging. Use Value: Programmable 2.48–2.74 V range matches supercapacitor manufacturer specifications-preventing overvoltage degradation and extending service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supercapacitor charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17710 | Lower max output current (100 mA), no integrated switches, requires external MOSFETs and compensation components. | Targeted at micropower sensor nodes-not suitable for >500 mA supercapacitor charging. | Select ZSPM4523AA1R when higher current, integrated power stage, and MPPT are required. |
| BQ24650 | Designed for Li-ion batteries; lacks temperature-independent MPPT and supercapacitor-specific termination voltage programming. | Requires external circuitry to adapt for supercapacitor charging-no native VOUT reverse-blocking or programmable CV range. | Select ZSPM4523AA1R for dedicated, optimized supercapacitor charging with solar MPPT and I²C configurability. |
Compared with MAX17710 and BQ24650, the ZSPM4523AA1R delivers higher integration (integrated 1.5 A switches), true PV-optimized MPPT, and precise supercapacitor voltage/current programming-reducing BOM count by ≥7 components and eliminating manual compensation tuning.
Availability
ZSPM4523AA1R is available at Aetrix Electronics and suitable for portable solar chargers, off-grid remote sensors, industrial IoT gateways, and backup power modules requiring stable component supply and long-lifecycle support.
Supply support for ZSPM4523AA1R 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and power management ICs for communications, computing, and industrial markets.
The ZSPM4523AA1R belongs to IDT's Smart Power product line, designed specifically for energy harvesting and supercapacitor-based power management in solar-powered embedded systems.
FAQ
What is the primary function of the ZSPM4523AA1R in a solar energy system?
The ZSPM4523AA1R serves as a fully integrated MPPT-controlled supercapacitor charger IC. It extracts maximum power from photovoltaic cells using a temperature-independent algorithm, regulates output voltage between 2.48 V and 2.74 V, and delivers up to 1.5 A of programmable charge current-enabling efficient, maintenance-free energy storage without batteries. Its design eliminates external power switches and compensation networks.
How does the ZSPM4523AA1R implement MPPT without temperature sensing?
The ZSPM4523AA1R uses an internal algorithm that dynamically adjusts the input operating point based on real-time VIN and IIN measurements-not ambient or junction temperature. This approach avoids thermal drift errors common in voltage-based or lookup-table MPPT methods, ensuring consistent power optimization across -40°C to 125°C operating junction temperatures without external sensors or calibration.
Can the ZSPM4523AA1R be used with lithium-ion batteries instead of supercapacitors?
No-the ZSPM4523AA1R is specifically architected for supercapacitor charging: its termination voltage range (2.48–2.74 V), reverse-current blocking, and charge profile lack the CC/CV sequencing, battery temperature monitoring, and safety cutoffs required for Li-ion. Using it with Li-ion batteries risks overvoltage, thermal runaway, or premature failure. For Li-ion, IDT's ZSPM4521 is the designated alternative.
What protection features are built into the ZSPM4523AA1R?
The ZSPM4523AA1R integrates input under-voltage lockout (3.15 V trip), output over-voltage protection (102% of programmed VOUT), cycle-by-cycle current limiting (2.5 A peak), and thermal shutdown (170°C trip with 10°C hysteresis). All faults assert the open-drain NFLT pin and set corresponding bits in the STATUS register-providing both hardware and software fault visibility without external components.
Is the ZSPM4523AA1R pin-compatible with other devices in the ZSPM45xx family?
Yes-the ZSPM4523AA1R shares identical 16-pin PQFN (4 mm × 4 mm) packaging and pinout with ZSPM4521 and ZSPM4551. However, register maps, default configurations, and functional blocks differ: ZSPM4521 targets Li-ion with different termination voltage range and safety logic, while ZSPM4523AA1R is optimized exclusively for supercapacitors with reverse-current blocking and MPPT architecture.
ZSPM4523AA1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
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- Topology:
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- Output Type:
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- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
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ZSPM4523AA1R FAQ
1.How can I place an order for ZSPM4523AA1R through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSPM4523AA1R 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 ZSPM4523AA1R reliable?
The price and inventory of ZSPM4523AA1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSPM4523AA1R is usually 5 days.
3.What payment methods are accepted for ZSPM4523AA1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSPM4523AA1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSPM4523AA1R?
ZSPM4523AA1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSPM4523AA1R 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 ZSPM4523AA1R?
For technical support, including ZSPM4523AA1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSPM4523AA1R requirements.
6.How does Aetrix verify that ZSPM4523AA1R is sourced from the original manufacturer or authorized distributors?
All ZSPM4523AA1R 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 ZSPM4523AA1R meets industry standards.
7.What is the process for return or replacement of ZSPM4523AA1R?
All ZSPM4523AA1R units undergo pre-shipment inspection (PSI). If there is an issue with ZSPM4523AA1R, 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 ZSPM4523AA1R part is unused and in its original packaging.
Return procedure for ZSPM4523AA1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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