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Renesas DA9232-81VZ2
- Part No.:
- DA9232-81VZ2
- Manufacturer:
- Renesas
- Package:
- 12-XFBGA, WLCSP
- Datasheet:
-
DA9232-81VZ2.pdf
- Description:
- IC REG BUCK PROG 60MA 12WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,659
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Product details
Overview
DA9232-81VZ2 from Renesas Electronics is a high-efficiency, ultra-low quiescent current (750 nA no-load), ultra-low output ripple buck regulator delivering up to 60 mA output current with I²C programmable output voltage (0.6 V to 1.9 V in 50 mV steps) and dynamic voltage control (DVC), designed for battery-powered wearable and sensor applications requiring extended runtime and compact power delivery.
For engineers reviewing the DA9232-81VZ2 datasheet, DA9232-81VZ2 pinout, DA9232-81VZ2 application, or DA9232-81VZ2 equivalent, key selection criteria include its 1.65 mm × 1.25 mm WLCSP-12 package, 2.5 V–5.5 V input range, 1.5 MHz switching frequency, cycle-by-cycle over-current protection, and GPO-configurable event monitoring - all critical for space-constrained, low-power embedded systems.
Technical Context
The DA9232-81VZ2 integrates a synchronous buck converter with PMOS high-side (RON = 600–800 mΩ) and NMOS low-side (RON = 300–450 mΩ) FETs, operating in continuous conduction mode at 1.5 MHz. Its analog core includes UVLO with 2.5 V falling threshold and 200 mV hysteresis, ensuring reliable start-up above 2.75 V.
I²C interface (100–400 kHz) enables real-time DVC, register-based fault flagging, and GPO function reconfiguration (Power Good, Event Indicator, Reset Pulse). The device supports automatic output discharge and provides event/status/mask registers for system-level fault handling without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 60 mA continuous DC output - sufficient for MCU cores, BLE radios, and low-power sensors. |
| Quiescent Current | 750 nA (buck enabled, no load) - minimizes standby drain in always-on battery systems. |
| Input Voltage Range | 2.5 V to 5.5 V (2.75 V min for start-up) - compatible with single Li-ion, Li-poly, or two-cell alkaline sources. |
| Output Voltage Range | 0.6 V to 1.9 V in 50 mV steps - supports modern low-voltage logic rails including 0.8 V, 1.2 V, and 1.8 V domains. |
| Switching Frequency | 1.5 MHz fixed - enables use of small 1.5 µH inductors and 22 µF output capacitors for minimal board area. |
| UVLO Threshold | 2.5 V (falling), 2.75 V (rising) with 200 mV hysteresis - prevents brown-out oscillation during battery discharge. |
| I²C Support | Standard/fast mode (100–400 kHz) - interoperable with common microcontroller I²C peripherals without clock stretching. |
Pinout & Package
DA9232-81VZ2 is housed in a 1.65 mm × 1.25 mm × 0.5 mm, 12-pin Wafer-Level Chip-Scale Package (WLCSP) with 0.4 mm pitch, optimized for ultra-dense PCB layouts in wearables and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_SYS | Power VIN input | Main buck input supply rail (2.5–5.5 V); tied internally to VDD for analog core biasing. |
| SW | Buck switch node | Connection point for external inductor; carries high-frequency switching current and requires tight layout. |
| PGND | Buck ground return | Dedicated power ground path for buck loop - must be separated from analog ground to minimize noise coupling. |
| SDA / SCL | I²C bidirectional data/clock | Configurable interface for DVC, register read/write, and fault status polling; supports 400 kHz fast mode. |
| GPO | General-purpose output | Programmable digital output for Power Good indication, interrupt signaling, or reset pulse generation. |
| VBUCK_SNS | Output voltage feedback | Direct connection to regulated VOUT; used for closed-loop regulation and accuracy calibration. |
| IC_EN | Chip enable input | Active-high digital control enabling/disabling the entire buck regulator and associated circuitry. |
| VDD | Analog supply input | Internal analog core supply; must be connected to VDD_SYS per datasheet layout guidance. |
| GND | Analog ground reference | Reference for internal comparators and ADCs; should be star-connected to PGND at single point. |
| NC (A3, C2, D2) | No connection | Unbonded pads - must remain unconnected and unpopulated on PCB to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Control (DVC) | Real-time I²C-adjustable output voltage during operation - enables system-level power state optimization (e.g., lowering VDD during sleep). |
| Ultra-Low Quiescent Current | 750 nA total input current at no load - extends battery life in multi-year sensor deployments. |
| Cycle-by-Cycle Over-Current Protection | 550 mA SW current limit with soft-start current limiting (250 mA) - prevents inductor saturation and thermal runaway under fault. |
| Automatic Output Discharge | 33 Ω internal discharge path - ensures rapid VOUT ramp-down after disable, preventing back-powering of upstream circuits. |
| GPO Configurability | Four selectable modes (Power Good, Event Flag, Reset Pulse, Hi-Z/Pull-down) - eliminates need for external logic or discrete components. |
Applications
| Wearable Health Sensors | Smart Home Door Locks |
|---|---|
Use Scenario: Continuous ECG/PPG sensing in wrist-worn devices powered by coin-cell or thin-film batteries. IC Role / Device Role / Timing Role: Primary buck regulator supplying 1.2 V to ultra-low-power MCU and analog front-end. Use Value: 750 nA quiescent current and 81% efficiency at 10 µA load directly extend battery life beyond 2 years. |
Use Scenario: Battery-backed electronic deadbolt with BLE connectivity and touch keypad. IC Role / Device Role / Timing Role: Regulating 1.8 V for BLE SoC and 0.9 V for secure element during intermittent wake cycles. Use Value: Dynamic Voltage Control reduces active-mode power by 30% when BLE is idle, while GPO signals tamper events to host MCU. |
| Wireless Smoke Detectors | Industrial Remote Temperature Sensors |
Use Scenario: 10-year sealed lithium battery smoke alarm with self-test and wireless reporting. IC Role / Device Role / Timing Role: Single-output buck providing stable 3.3 V (via external LDO) or direct 1.8 V to RF transceiver and MCU. Use Value: Ultra-low output ripple (<10 mV pk-pk) ensures clean supply for sensitive smoke chamber analog signal chain. |
Use Scenario: Solar-charged outdoor sensor node measuring temperature/humidity every 15 minutes. IC Role / Device Role / Timing Role: Efficiently converting variable 2.8–4.2 V solar/battery input to precise 1.2 V for ADC and microcontroller. Use Value: 1.5 MHz switching allows use of miniature 1.5 µH inductor and ceramic caps, reducing BOM size and cost in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS62748YBGR | 60 mA output, 300 nA IQ, but fixed 1.8 V output; no I²C or DVC; 1.2 MHz switching. | Lacks programmability and event monitoring - suitable only for static-rail, lowest-IQ designs. | Select when absolute minimum quiescent current is prioritized over flexibility and system integration. |
| Analog Devices ADP5302ACBZ-1-R7 | 60 mA output, 750 nA IQ, I²C interface, but 0.8–3.3 V output range and larger 2.0 mm × 1.6 mm DFN-8 package. | Broader VOUT range supports more rail combinations, but larger footprint limits use in ultra-compact wearables. | Select when wider output voltage flexibility and proven automotive qualification are required over minimal size. |
Compared with TPS62748YBGR and ADP5302ACBZ-1-R7, DA9232-81VZ2 uniquely combines ultra-small WLCSP-12 packaging, full I²C configurability, DVC, and integrated GPO event signaling - making it optimal for next-generation miniaturized, intelligent battery-powered endpoints where board area and system-level control are constrained.
Availability
DA9232-81VZ2 is available at Aetrix Electronics and suitable for wearable health monitors, smart home security devices, wireless fire safety systems, and industrial remote sensors requiring stable component supply across long-lifecycle production programs.
Supply support for DA9232-81VZ2 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog power management, and embedded solutions for automotive, industrial, and IoT markets.
The DA9232-81VZ2 belongs to Renesas' ultra-low-power PMIC family, engineered specifically for battery-operated edge devices demanding nanowatt-level standby consumption, sub-millimeter packaging, and intelligent power orchestration via digital interfaces.
FAQ
What is the minimum input voltage required to start up the DA9232-81VZ2?
The DA9232-81VZ2 requires a minimum input voltage of 2.75 V on VDD_SYS to initiate start-up. Once operational, it sustains regulation down to 2.5 V. This UVLO rising threshold ensures reliable turn-on from partially discharged batteries while avoiding unstable brown-out conditions during discharge cycles - a critical behavior verified in the DA9232-81VZ2 datasheet Section 8 and Table 4.
Does the DA9232-81VZ2 support dynamic voltage scaling during operation?
Yes, the DA9232-81VZ2 supports real-time Dynamic Voltage Control (DVC) via its I²C interface. Users can adjust the output voltage in 50 mV steps from 0.6 V to 1.9 V while the device is regulating - enabling system-level power state transitions (e.g., lowering VOUT during MCU sleep) without hardware changes. This capability is documented in DA9232-81VZ2 datasheet Sections 10.3.4 and Figure 30–33.
How does the GPO pin function in the DA9232-81VZ2?
The GPO pin on the DA9232-81VZ2 is software-configurable through I²C registers to serve as Power Good indicator, event flag (e.g., over-current or UVLO), reset pulse generator, or Hi-Z/pull-down output. Its drive strength and logic thresholds are specified in Table 7 (VOH ≥1.4 V, VOL ≤0.4 V), and configuration is managed via the GPO register (Table 18) - eliminating need for external GPIO expanders in resource-constrained designs.
What protection features are integrated into the DA9232-81VZ2?
The DA9232-81VZ2 integrates cycle-by-cycle over-current protection (550 mA limit), output over-voltage protection (OVP), output under-voltage protection (UVP), automatic output discharge (33 Ω path), and under-voltage lockout (UVLO) with 200 mV hysteresis. All fault events generate flags accessible via I²C STATUS register (Table 16), allowing host MCU to respond without external supervision circuitry - a key differentiator confirmed in DA9232-81VZ2 datasheet Sections 10.3.5–10.3.9.
Is the DA9232-81VZ2 pin-compatible with other variants in the DA9232 family?
Yes, the DA9232-81VZ2 shares identical pinout, package dimensions, and electrical interface with all DA9232 family members (e.g., DA9232-81VZ1, DA9232-81VZ3), differing only in factory-programmed OTP settings such as default output voltage and I²C address. This allows design reuse across configurations without PCB revision - a detail confirmed in Renesas' Ordering Information (Table 29) and Package Outline (Section 12.1).
DA9232-81VZ2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 12-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.9V
- Current - Output:
- 60mA
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLCSP (1.68x1.28)
DA9232-81VZ2 FAQ
1.How can I place an order for DA9232-81VZ2 through Aetrix?
Please submit a Request for Quotation (RFQ) for DA9232-81VZ2 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 DA9232-81VZ2 reliable?
The price and inventory of DA9232-81VZ2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA9232-81VZ2 is usually 5 days.
3.What payment methods are accepted for DA9232-81VZ2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA9232-81VZ2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA9232-81VZ2?
DA9232-81VZ2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA9232-81VZ2 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 DA9232-81VZ2?
For technical support, including DA9232-81VZ2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA9232-81VZ2 requirements.
6.How does Aetrix verify that DA9232-81VZ2 is sourced from the original manufacturer or authorized distributors?
All DA9232-81VZ2 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 DA9232-81VZ2 meets industry standards.
7.What is the process for return or replacement of DA9232-81VZ2?
All DA9232-81VZ2 units undergo pre-shipment inspection (PSI). If there is an issue with DA9232-81VZ2, 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 DA9232-81VZ2 part is unused and in its original packaging.
Return procedure for DA9232-81VZ2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DA9232-81VZ2 Tags
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