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Diodes Incorporated AP9101CK-BZTRG1
- Part No.:
- AP9101CK-BZTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-BZTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
AP9101CK-BZTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC designed for 1-cell packs. It integrates overcharge (4.375V), overdischarge (2.500V), discharge/charge overcurrent (0.150V / −0.150V), short-circuit (0.700V), and overvoltage charger (8.0V) detection with ±25mV voltage accuracy and built-in fixed delay timing. It drives external N-channel MOSFETs via CO and DO pins in portable power tools and Bluetooth headsets.
For engineers reviewing the AP9101CK-BZTRG1 datasheet, AP9101CK-BZTRG1 pinout, AP9101CK-BZTRG1 application, or AP9101CK-BZTRG1 equivalent, this device supports precise 1-cell Li+ pack safety control with selectable 0V charge and power-down mode, low 3.0µA operating current, SOT25 packaging, and RoHS/Green compliance.
Technical Context
The AP9101CK-BZTRG1 implements independent voltage and current monitoring paths: VDD–VSS sensing for cell voltage thresholds (VCU = 4.375V, VDL = 2.500V), and VM–VSS differential sensing for discharge/charge overcurrent (VDOC = 0.150V, VCOC = −0.150V) and short-circuit (VSHORT = 0.700V). Its logic circuit enforces auto-release overcharge protection and uses internal RVMD/RVMS resistors (300kΩ/30kΩ typ) to bias VM during fault states.
It features fixed detection delays (tCU = 1.0s typ, tDOC = 12ms typ, tSHORT = 10µs typ) with ±20% accuracy at +25°C, operates from 1.5V to 5.5V supply, tolerates up to 30V between VDD and VM, and supports factory-configured 0V battery charge enablement and power-down mode selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge MOSFET |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers discharge cutoff to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Charge Overcurrent Threshold | −0.150V ±15mV - identifies reverse current flow during abnormal charging |
| Short-Circuit Detection Voltage | 0.700V ±100mV - enables ultrafast (10µs typ) shutdown for hard shorts |
| Operating Current | 3.0µA typ at 3.5V - minimizes quiescent drain on standby battery |
| VM–VSS Sense Range | −0.3V to 5.5V - accommodates bidirectional current sensing with external RSNS |
Pinout & Package
AP9101CK-BZTRG1 is packaged in SOT25 (5-pin), with pin 1 marked. The package supports surface-mount reflow and provides thermal dissipation up to 250mW at +25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short circuits |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO gate outputs |
| VSS | Negative Supply Reference | Ground reference for all voltage measurements and logic; tied to battery negative |
| DO | Discharge Control Output | Drives gate of discharge-side N-MOSFET; pulled low during overdischarge, overcurrent, or short |
| CO | Charge Control Output | Drives gate of charge-side N-MOSFET; pulled low during overcharge, charge overcurrent, or overvoltage charger fault |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed Protection Thresholds | Fixed VCU = 4.375V, VDL = 2.500V, VDOC = 0.150V, VCOC = −0.150V - eliminates external resistor trimming and calibration |
| Built-in Fixed Delay Timing | No external capacitors required for tCU (1.0s), tDL (100ms), tDOC (12ms), tSHORT (10µs) - reduces BOM count and layout area |
| Selectable 0V Battery Charge | Enabled per part number - allows safe recharge of fully depleted cells without manual pre-charge circuitry |
| Power-Down Mode Option | 0.01µA typ standby current - extends shelf life for sealed battery packs awaiting deployment |
| High-Voltage Sense Capability | 30V max VDD–VM rating - supports robust operation with high-side sensing configurations and transient immunity |
Applications
| Power Tools | Wireless Headsets |
|---|---|
Use Scenario: Cordless drill battery pack subjected to high-pulse discharge currents and intermittent fast charging. IC Role / Device Role / Timing Role: Primary protection controller enforcing overdischarge cutoff at 2.500V and short-circuit shutdown within 10µs. Use Value: Prevents cell swelling and thermal runaway during stall-load conditions while enabling full capacity utilization. |
Use Scenario: Compact Li+ battery in Bluetooth earbuds requiring ultra-low quiescent current and reliable 0V recovery. IC Role / Device Role / Timing Role: Standby-mode protector with 0.01µA power-down current and factory-enabled 0V charge function. Use Value: Eliminates need for external wake-up circuitry and guarantees recharge capability after long-term storage. |
| Medical Wearables | POS Terminals |
Use Scenario: Single-cell battery powering ECG patch with strict safety certification requirements. IC Role / Device Role / Timing Role: Safety-critical voltage/current monitor with ±25mV overcharge detection accuracy and auto-release behavior. Use Value: Meets IEC 62368-1 fault response timing and precision mandates without external calibration components. |
Use Scenario: Portable payment terminal experiencing frequent partial discharges and variable ambient temperature. IC Role / Device Role / Timing Role: Dual-threshold protector with overdischarge hysteresis (VDU = 2.900V) and wide-temp operation (−40°C to +85°C). Use Value: Avoids false lockout during cold-weather operation while maintaining tight voltage guardbands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261AAB-M6T1U | Fixed VCU = 4.250V, VDL = 2.500V; no overvoltage charger detection; requires external capacitor for delay timing | Lacks 8.0V overvoltage charger monitoring and fixed-delay integration - less suitable for USB PD or multi-adapter environments | Choose when cost sensitivity outweighs need for charger voltage supervision and component count reduction |
| Ricoh RP502K001B-TR-F | Lower operating current (1.8µA typ); supports 2-cell configuration; no 0V charge option; different pinout (SOT-26) | Designed for dual-cell stacks and ultra-low-power IoT sensors - not drop-in compatible for 1-cell SOT25 layouts | Prefer for energy-harvesting systems where sub-2µA quiescent current is mandatory and 2-cell topology is acceptable |
Compared with S-8261AAB-M6T1U and RP502K001B-TR-F, AP9101CK-BZTRG1 uniquely combines 8.0V overvoltage charger detection, factory-set thresholds, zero external timing components, and SOT25 footprint - making it optimal for compact, adapter-flexible 1-cell consumer electronics.
Availability
AP9101CK-BZTRG1 is available at Aetrix Electronics and suitable for power tools, wireless headsets, medical wearables, and POS terminals requiring stable component supply, long-lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CK-BZTRG1 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, cost-sensitive 1-cell Li+ applications demanding precision, low power, and minimal external components.
FAQ
What is the function of the VM pin on AP9101CK-BZTRG1?
The VM pin serves as the current-sense input terminal, measuring the voltage difference between itself and VSS to detect discharge overcurrent (≥0.150V), charge overcurrent (≤−0.150V), and short-circuit (≥0.700V) conditions. Internally, it connects to RVMS (30kΩ typ) to VSS and RVMD (300kΩ typ) to VDD during fault states to ensure stable biasing and accurate threshold comparison across temperature.
Does AP9101CK-BZTRG1 support automatic recovery from overdischarge?
Yes - AP9101CK-BZTRG1 implements auto-release overdischarge protection. When the battery voltage rises above the overdischarge release voltage (VDU = 2.900V), the DO pin returns high to re-enable the discharge MOSFET. This occurs without requiring external intervention, provided the device is configured in auto-wake-up mode (indicated by 'B' in the suffix), which is standard for this variant.
Can AP9101CK-BZTRG1 be used with 2-cell battery packs?
No - AP9101CK-BZTRG1 is strictly designed for 1-cell lithium-ion/polymer batteries. Its overcharge detection range (up to 4.5V) and absolute maximum VDD–VSS rating (12V) do not support the 8.4V nominal voltage of a 2-cell stack. For 2-cell applications, Diodes offers the AP9211 or AP9221 families, which feature higher voltage thresholds and dual-cell monitoring architecture.
How does the overvoltage charger detection feature work?
The overvoltage charger detection circuit monitors the voltage between VDD and VM pins. If this voltage exceeds 8.0V (±2V), the CO pin is immediately driven low to disable the charge MOSFET - with no delay - protecting against faulty or mismatched chargers. Recovery occurs when the VDD–VM voltage falls below 7.3V (±2V), restoring charge capability without user action.
AP9101CK-BZTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- SOT-25
AP9101CK-BZTRG1 FAQ
1.How can I place an order for AP9101CK-BZTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-BZTRG1 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 AP9101CK-BZTRG1 reliable?
The price and inventory of AP9101CK-BZTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-BZTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-BZTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-BZTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-BZTRG1?
AP9101CK-BZTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-BZTRG1 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 AP9101CK-BZTRG1?
For technical support, including AP9101CK-BZTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-BZTRG1 requirements.
6.How does Aetrix verify that AP9101CK-BZTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-BZTRG1 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 AP9101CK-BZTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-BZTRG1?
All AP9101CK-BZTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-BZTRG1, 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 AP9101CK-BZTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-BZTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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