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Diodes Incorporated AP9234LA-AB-HSB-7
- Part No.:
- AP9234LA-AB-HSB-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9234LA-AB-HSB-7.pdf
- Description:
- MULTICELL BATT MANAGER U-DFN2535
- Quantity:
- Payment:
- Shipping:
Inventory:1,276
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Product details
Overview
AP9234LA-AB-HSB-7 from Diodes Incorporated is a high-accuracy, single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) = 13 mΩ typ at VDD = 3.9V), overcharge/overdischarge voltage detection (±25 mV @ +25°C), and discharge overcurrent sensing (±12 mV). It operates in 1-cell Li+ battery packs for portable power tools, medical handhelds, and Bluetooth speakers requiring precise, low-quiescent-current protection.
For engineers reviewing the AP9234LA-AB-HSB-7 datasheet, AP9234LA-AB-HSB-7 pinout, AP9234LA-AB-HSB-7 application, or AP9234LA-AB-HSB-7 equivalent, this page delivers verified functional roles, validated thermal-aware current limits, confirmed U-DFN2535-6 (Type B) package mapping, and real-world timing behavior across -40°C to +85°C - all critical for BMS reliability validation and layout-sensitive PCB design.
Technical Context
The AP9234LA-AB-HSB-7 implements independent charge/discharge MOSFET control via internal logic with fixed delay timers (tCU = 1000 ms typ, tDOC = 10 ms typ) and auto-wake-up functionality. Its VM-sense architecture enables simultaneous monitoring of charge/discharge current using a single external sense resistor (R2), with built-in compensation for MOSFET on-resistance drift across temperature.
It features factory-configured 0V battery charge enablement, overvoltage charger detection (8.0 V fixed, ±2.0 V accuracy), and dual operating modes: auto-wake-up (IAUTO = 3.5–5.5 µA @ VDD = 1.8 V) and power-down (IPDN ≤ 0.1 µA). The device uses high-voltage CMOS process supporting up to 24 V between VDD and VM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.25 V ±25 mV @ +25°C - sets precise upper cell voltage limit before disabling charge FET |
| Discharge Overcurrent Threshold | 0.05 V ±12 mV @ +25°C - enables accurate current limiting down to ~3.8 A with 13 mΩ RSS(ON) |
| Quiescent Current (Operation) | 3.0 µA typ @ VDD = 3.5 V - minimizes standby drain in always-on battery systems |
| MOSFET On-Resistance | 13.0 mΩ typ @ VDD = 3.9 V, ID = 1 A - defines conduction loss and thermal rise during 5 A continuous discharge |
| Operating Temperature Range | -40°C to +85°C - validated performance for industrial and consumer portable equipment |
| Package | U-DFN2535-6 (Type B), 2.5 mm × 3.5 mm × 0.55 mm - compact footprint with exposed drain pad for thermal management |
| 0V Charge Function | Enabled - allows safe reactivation of deeply discharged cells without manual intervention |
Pinout & Package
AP9234LA-AB-HSB-7 is housed in a thermally enhanced U-DFN2535-6 (Type B) package with an exposed drain pad (EP) serving as the common drain for both integrated N-channel MOSFETs. PCB layout requires direct copper connection to EP for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharging MOSFET | Connects directly to battery negative terminal; forms current path during discharge |
| 2 (VSS) | Negative power reference | Ground return for internal circuitry and voltage comparators |
| 3 (VDD) | Positive supply input | Connected to battery positive via R1; powers internal logic and gate drivers |
| 4 (NC) | No connect | Must remain unconnected; no internal bonding or function |
| 5 (VM) | Current sense and charge status input | Monitors voltage drop across R2 to detect charge/discharge current and short-circuit events |
| 6 (S2) | Source of charging MOSFET | Connects to charger negative; controls charge path activation/deactivation |
| EP | Common drain of both MOSFETs | Thermal and electrical node tied to P+; requires large copper pour for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates need for external discrete FETs and reduces BOM count by two components |
| Temperature-compensated current sensing | Maintains ±12 mV discharge overcurrent accuracy across full -40°C to +85°C range |
| Built-in 1000 ms overcharge delay | Prevents false triggering from transient voltage spikes during fast-charge termination |
| Auto-wake-up from overdischarge | Enables autonomous recovery when battery voltage rises above VDU without external charger presence |
| 0V battery charge enable | Permits safe recharge of fully depleted cells, extending usable battery life in infrequently used devices |
Applications
| Power Tools | Medical Handheld Devices |
|---|---|
Use Scenario: Cordless drill operating under intermittent high-current loads with frequent deep discharge cycles. IC Role / Device Role / Timing Role: Battery protection controller enforcing overdischarge cutoff at 2.5 V and releasing at 3.0 V after 2 ms delay to prevent false shutdown during motor surge. Use Value: Prevents irreversible capacity loss by halting discharge before cell voltage collapses below 2.0 V, preserving cycle life beyond 500 cycles. | Use Scenario: Portable ultrasound probe powered by sealed 1-cell Li+ pack requiring zero-maintenance operation between clinical sessions. IC Role / Device Role / Timing Role: Dual-role protector enabling 0V charge recovery and detecting load shorts within 360 µs to isolate fault before thermal runaway. Use Value: Eliminates need for manual battery replacement or service technician intervention after prolonged storage-induced deep discharge. |
| Bluetooth Speakers | Wearable Fitness Trackers |
Use Scenario: Compact speaker with USB-C charging and multi-hour playback, subject to ambient temperature swings from 0°C to 45°C. IC Role / Device Role / Timing Role: Precision voltage monitor maintaining ±35 mV overdischarge detection accuracy across temperature to avoid premature shutdown during cold-weather use. Use Value: Delivers consistent runtime reporting and prevents audible cut-off during bass-heavy audio peaks by rejecting transient voltage dips. | Use Scenario: Slim wrist-worn tracker with constrained PCB area and strict 3 µA max system quiescent budget. IC Role / Device Role / Timing Role: Ultra-low-power protector consuming only 3.0 µA in active mode while continuously monitoring cell voltage and charge status. Use Value: Extends battery life to ≥7 days per charge without compromising protection integrity or requiring periodic firmware wake-ups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li+ battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9235LA-AB-HSB-7 | Fixed overcharge voltage 4.35 V (vs. 4.25 V); same package and pinout | Targeted for higher-voltage Li+ chemistries (e.g., LiCoO₂ with 4.35 V max) | Select when cell specification mandates 4.35 V OCV threshold and thermal stability at elevated charge voltage |
| R5640T202A-TR | Separate charge/discharge FET control; no integrated MOSFETs; 2.5 µA IQ | Requires external MOSFETs but supports customizable RSS(ON) and higher current ratings | Choose for designs needing >10 A continuous discharge or field-replaceable FETs in high-reliability systems |
Compared with AP9234LA-AB-HSB-7, the AP9235LA variant offers tighter voltage alignment for advanced Li-ion cells, while the R5640T demands external FETs but grants design flexibility for high-current or repairable battery modules - making AP9234LA optimal for cost-sensitive, space-constrained 1-cell packs where integration and ultra-low IQ are primary constraints.
Availability
AP9234LA-AB-HSB-7 is available at Aetrix Electronics and suitable for portable power tools, medical handhelds, and Bluetooth speakers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP9234LA-AB-HSB-7 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.
The AP9234L series belongs to Diodes' battery protection IC product line, engineered specifically for compact, high-accuracy 1-cell Li+ battery management in consumer and industrial portable electronics - emphasizing integration, thermal robustness, and low-power operation.
FAQ
What is the function of the VM pin on AP9234LA-AB-HSB-7?
The VM pin serves as the bidirectional current-sense input that monitors voltage drop across the external sense resistor (R2) to detect both charge and discharge overcurrent conditions. During discharge, it measures the S1-to-VSS potential; during charge, it measures the S2-to-VSS potential. Internal logic uses this signal to trigger MOSFET shutdown within 10 ms for discharge overcurrent or 360 µs for short-circuit events.
Does AP9234LA-AB-HSB-7 support automatic recovery from overdischarge without a charger?
Yes - AP9234LA-AB-HSB-7 includes auto-wake-up functionality. When the battery voltage rises above the overdischarge release voltage (VDU = 3.0 V typ) and remains there for ≥2 ms, the device automatically re-enables the discharge MOSFET. This eliminates dependency on external charging to exit overdischarge lockout, critical for devices left idle for extended periods.
How does the integrated MOSFET on-resistance affect current-limiting accuracy?
The AP9234LA-AB-HSB-7 compensates for RSS(ON) variation across temperature and VDD using internal calibration circuits. At +25°C and VDD = 3.9 V, RSS(ON) = 13.0 mΩ typ; the IC adjusts its VDOC threshold dynamically so that a 0.05 V sense voltage corresponds to ~3.8 A regardless of MOSFET heating or supply sag - ensuring ±12 mV current-sense accuracy over full operating range.
Can AP9234LA-AB-HSB-7 be used in automotive applications?
No - AP9234LA-AB-HSB-7 is not AEC-Q200 qualified and lacks automotive-grade qualification documentation. While it operates from -40°C to +85°C, its design targets consumer and industrial portable equipment. For automotive battery packs, Diodes recommends contacting their sales team for AEC-Q100-qualified alternatives with PPAP support and IATF 16949 manufacturing certification.
AP9234LA-AB-HSB-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Battery Protection
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Current, Over Voltage, Short Circuit
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2535-6
AP9234LA-AB-HSB-7 FAQ
1.How can I place an order for AP9234LA-AB-HSB-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9234LA-AB-HSB-7 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 AP9234LA-AB-HSB-7 reliable?
The price and inventory of AP9234LA-AB-HSB-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9234LA-AB-HSB-7 is usually 5 days.
3.What payment methods are accepted for AP9234LA-AB-HSB-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9234LA-AB-HSB-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9234LA-AB-HSB-7?
AP9234LA-AB-HSB-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9234LA-AB-HSB-7 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 AP9234LA-AB-HSB-7?
For technical support, including AP9234LA-AB-HSB-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9234LA-AB-HSB-7 requirements.
6.How does Aetrix verify that AP9234LA-AB-HSB-7 is sourced from the original manufacturer or authorized distributors?
All AP9234LA-AB-HSB-7 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 AP9234LA-AB-HSB-7 meets industry standards.
7.What is the process for return or replacement of AP9234LA-AB-HSB-7?
All AP9234LA-AB-HSB-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9234LA-AB-HSB-7, 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 AP9234LA-AB-HSB-7 part is unused and in its original packaging.
Return procedure for AP9234LA-AB-HSB-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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