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Diodes Incorporated AP9234LA-AO-HSB-7
- Part No.:
- AP9234LA-AO-HSB-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9234LA-AO-HSB-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:630
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Product details
Overview
AP9234LA-AO-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 = 4.0V), 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 and medical wearables requiring precise, temperature-compensated current monitoring and auto-wake-up recovery from deep discharge.
For engineers reviewing the AP9234LA-AO-HSB-7 datasheet, AP9234LA-AO-HSB-7 pinout, AP9234LA-AO-HSB-7 application, or AP9234LA-AO-HSB-7 equivalent, this page delivers verified functional architecture, validated U-DFN2535-6 (Type B) package mapping, confirmed 6-pin terminal roles, and real-world selection guidance against comparable battery protection ICs with differing wake-up behavior and 0V-charge options.
Technical Context
The AP9234LA-AO-HSB-7 implements dual independent protection paths: one for charge control (using VCOC threshold and S2 gate drive) and one for discharge control (using VDOC/VSHORT thresholds and S1 gate drive), both referenced to VM–VSS. Its internal logic compensates RSS(ON) drift across –40°C to +85°C to maintain ±12 mV current-sense accuracy without external calibration.
It features factory-configured auto-wake-up mode (no external charger required for overdischarge recovery), selectable 0V battery charging (enabled), and fixed overvoltage charge detection at 8.0 V ±2.0 V between VDD and VM - a dedicated safety layer independent of cell voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Type | Single-chip 1-cell Li+ battery protector with integrated dual N-MOSFETs (common-drain EP pad) |
| VDD Operating Range | 1.5 V to 5.5 V - supports full Li+ cell voltage range (2.0–4.5 V) plus margin for transient spikes |
| Overcharge Detection | 3.5 V to 4.5 V in 5 mV steps, ±25 mV accuracy @ +25°C - enables tight SOC windowing without external resistors |
| Discharge Overcurrent Threshold | 0.03 V to 0.19 V in 10 mV steps, ±12 mV accuracy @ +25°C - sets precise current limit via sense-resistor-free internal sensing |
| Quiescent Current | 3.0 µA typ in operation, 0.1 µA max in power-down - extends shelf life of stored battery packs |
| Delay Accuracy | ±20% on all detection/release timers (e.g., tCU = 1000 ms ±200 ms) - eliminates need for external timing capacitors |
| Package | U-DFN2535-6 (Type B), 2.5 mm × 3.5 mm × 0.55 mm - thermally optimized for PCB copper pour on exposed drain pad (EP) |
Pinout & Package
Delivered in U-DFN2535-6 (Type B) package with exposed drain pad (EP) for thermal dissipation. Pin 4 (NC) must remain unconnected; EP serves as common drain for both internal MOSFETs and requires direct PCB copper connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharging MOSFET | Connected directly to battery negative (B−); forms low-side discharge path with EP drain |
| 2 (VSS) | Negative power reference | System ground return; bias reference for all voltage comparators and logic |
| 3 (VDD) | Positive supply input | Connected to battery positive (B+) via R1 (330–470 Ω); powers internal circuitry and gate drivers |
| 4 (NC) | No connect | Internally unconnected; must be left floating per datasheet |
| 5 (VM) | Charge/discharge current sense node | Monitors voltage drop across R2 (2.7 kΩ typical) between P− and S2; detects charge/discharge direction and magnitude |
| 6 (S2) | Source of charging MOSFET | Connected to charger negative (C−); forms low-side charge path with EP drain |
| EP | Common drain of both MOSFETs | Thermally critical node; requires ≥100 mm² copper area for reliable 7.1 A continuous current at +70°C |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated current sensing | Maintains ±12 mV discharge overcurrent accuracy across –40°C to +85°C by dynamically adjusting for RSS(ON) drift |
| Auto-wake-up from overdischarge | Recovers to normal operation when battery voltage rises above VDU (e.g., 2.7 V) without requiring external charger connection |
| 0V battery charge enable | Allows safe recharging of fully depleted cells (0 V) using standard CC/CV chargers - factory-configured in -AO variant |
| Integrated overvoltage charger detection | Shuts off charging MOSFET if VDD–VM exceeds 8.0 V ±2.0 V - protects against faulty or mismatched chargers |
| Ultra-low quiescent current | 3.0 µA typ operating current ensures <1% annual self-discharge loss in sealed battery packs |
Applications
| Power Tools | Medical Wearables |
|---|---|
|
Use Scenario: Cordless drill battery pack subjected to intermittent high-current bursts (up to 7 A) and storage at ambient temperatures from –20°C to +60°C. IC Role / Device Role / Timing Role: Primary protection controller enforcing overcurrent cutoff within 10 ms and auto-recovering from overdischarge during long-term shelf storage. Use Value: Prevents thermal runaway during stall conditions while enabling field-revival of deeply discharged packs without specialized equipment. |
Use Scenario: Rechargeable ECG patch worn continuously for 7 days, requiring guaranteed shutdown below 2.5 V to avoid cell damage and automatic restart upon recharge. IC Role / Device Role / Timing Role: Dual-threshold voltage supervisor with ±35 mV overdischarge detection accuracy and auto-wake-up release at 2.7 V. Use Value: Extends usable battery life by 18% versus fixed-threshold protectors through temperature-compensated voltage windows. |
| Bluetooth Headsets | IoT Sensor Nodes |
|
Use Scenario: Compact wireless earbud battery (300 mAh) experiencing frequent micro-short events during insertion/removal and 0V self-discharge during 6-month shelf life. IC Role / Device Role / Timing Role: Short-circuit protector with 360 μs detection latency and factory-enabled 0V charge function. Use Value: Eliminates need for manual reset or special "wake-up" chargers - end users simply plug in standard USB-C charger. |
Use Scenario: Solar-powered soil moisture sensor deployed outdoors with seasonal temperature swings (–30°C to +70°C) and infrequent data transmission cycles. IC Role / Device Role / Timing Role: Low-power guardian ensuring discharge cutoff at 2.0 V ±80 mV across full temperature range and consuming only 0.1 µA in sleep. Use Value: Guarantees 5+ year field deployment without battery replacement due to ultra-low leakage and robust overdischarge hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li+ battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N208AA-TR | Fixed overcharge threshold (4.25 V), no 0V charge, no auto-wake-up - requires external charger for overdischarge recovery | Lacks temperature compensation for current sensing; ±50 mV overdischarge accuracy vs. ±35 mV | Select only for cost-sensitive consumer electronics where shelf-life recovery is not required |
| BD14000GUL | Separate charge/discharge FET drivers, external sense resistor required, 1.8 µA quiescent current | Supports 2-cell configuration; lacks integrated overvoltage charger detection | Choose when design requires programmable thresholds or multi-cell scalability beyond 1-cell topology |
Compared with R5460N208AA-TR and BD14000GUL, the AP9234LA-AO-HSB-7 uniquely combines factory-set auto-wake-up, 0V charge enable, and RSS(ON)-compensated current sensing - reducing BOM count by two external components and enabling maintenance-free recovery in field-deployed devices.
Availability
AP9234LA-AO-HSB-7 is available at Aetrix Electronics and suitable for power tools, medical wearables, Bluetooth headsets, and IoT sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9234LA-AO-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, with ISO/TS 16949-certified manufacturing and AEC-Q qualified automotive products.
The AP9234L series belongs to Diodes' Battery Management IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li+ applications demanding precision protection without external passive components.
FAQ
What does the "-AO" suffix indicate in AP9234LA-AO-HSB-7?
The "-AO" denotes factory configuration for auto-wake-up mode and enabled 0V battery charging functionality. Unlike "-PO" (power-down) variants, it recovers from overdischarge without external charger intervention and permits safe recharging of fully depleted cells down to 0 V.
Can AP9234LA-AO-HSB-7 support bidirectional current sensing without external resistors?
Yes - it uses internal VM–VSS differential sensing to distinguish charge (negative VM voltage) from discharge (positive VM voltage) and triggers appropriate MOSFET shutdown. R2 (2.7 kΩ) is required for level-shifting but no additional sense resistor is needed.
How is thermal performance managed given the U-DFN2535-6 package?
Thermal management relies on the exposed drain pad (EP), which serves as the common drain for both MOSFETs. Diodes specifies ≥100 mm² of 2-ounce copper connected to EP for 7.1 A continuous current at +70°C ambient; insufficient copper area causes RSS(ON) derating and premature thermal shutdown.
Does AP9234LA-AO-HSB-7 require external capacitors for stable operation?
Yes - C1 (100 nF ceramic) between VDD and VSS is mandatory for supply stabilization, and C2/C3 (optional 100 nF) improve noise immunity on VM and VDD lines. R1 (330–470 Ω) limits inrush current and must be placed between B+ and VDD per the reference schematic.
AP9234LA-AO-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
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2535-6
AP9234LA-AO-HSB-7 FAQ
1.How can I place an order for AP9234LA-AO-HSB-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9234LA-AO-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-AO-HSB-7 reliable?
The price and inventory of AP9234LA-AO-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-AO-HSB-7 is usually 5 days.
3.What payment methods are accepted for AP9234LA-AO-HSB-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9234LA-AO-HSB-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9234LA-AO-HSB-7?
AP9234LA-AO-HSB-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9234LA-AO-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-AO-HSB-7?
For technical support, including AP9234LA-AO-HSB-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9234LA-AO-HSB-7 requirements.
6.How does Aetrix verify that AP9234LA-AO-HSB-7 is sourced from the original manufacturer or authorized distributors?
All AP9234LA-AO-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-AO-HSB-7 meets industry standards.
7.What is the process for return or replacement of AP9234LA-AO-HSB-7?
All AP9234LA-AO-HSB-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9234LA-AO-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-AO-HSB-7 part is unused and in its original packaging.
Return procedure for AP9234LA-AO-HSB-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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