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Home Products Integrated Circuits (ICs)PMIC - Battery Management~~AP9101CK6-BSTRG1~~

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AP9101CK6-BSTRG1 - Diodes Incorporated

Name: Diodes Incorporated AP9101CK6-BSTRG1
Brand: Diodes Incorporated
SKU: AP9101CK6-BSTRG1
Availability: InStock
Rating: 5 (3 reviews)

Manufacturer Part Number: AP9101CK6-BSTRG1

Manufacturer: Diodes Incorporated

Allelco Part Number: 32D-AP9101CK6-BSTRG1

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 369,350 pcs available, New & Original

Parts Description: IC BATT PROT LI-ION 1CELL SOT26

Package: SOT-26

Data sheet: AP9101CK6-BSTRG.pdf

Environmental Information
Diodes Environmental Compliance Cert.pdf

RoHs Status: ROHS3 Compliant

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Our certification

In stock: 369350

Specifications

AP9101CK6-BSTRG1 Tech Specifications
Diodes Incorporated - AP9101CK6-BSTRG1 technical specifications, attributes, parameters and parts with similar specifications to Diodes Incorporated - AP9101CK6-BSTRG1

Product Attribute	Attribute Value
Manufacturer	Diodes Incorporated
Supplier Device Package	SOT-26
Series	-
Package / Case	SOT-23-6
Package	Tape & Reel (TR)
Operating Temperature	-40°C ~ 85°C (TA)
Number of Cells	1

Product Attribute	Attribute Value
Mounting Type	Surface Mount
Interface	-
Function	Battery Protection
Fault Protection	Over Current, Over Voltage
Battery Chemistry	Lithium Ion/Polymer
Base Product Number	AP9101

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Parts Introduction

AP9101CK6-BSTRG1 (1)

Manufacturer Part Number

AP9101CK6-BSTRG1

Manufacturer

diodes

Introduction

The diodes AP9101CK6-BSTRG1 is a highly integrated single-cell lithium-ion/polymer battery protection integrated circuit (IC) that provides comprehensive protection for rechargeable battery packs. This device monitors and controls the charging and discharging of the battery to ensure safe and reliable operation.

Product Features and Performance

Provides protection against overcurrent, overcharge, and over-discharge

Supports 1-cell lithium-ion/polymer battery packs

Operates over a wide temperature range of -40°C to 85°C

Offers a low on-resistance of 35mΩ for the discharge path

Integrates a low-power mode to extend battery life

Available in a compact SOT-23-6 package

Product Advantages

Comprehensive battery protection ensures safe and reliable operation

Low on-resistance minimizes power loss and heat generation

Wide temperature range allows usage in demanding environments

Compact package saves valuable PCB space

Key Reasons to Choose This Product

Reliable and robust battery protection for critical applications

Optimized performance with high efficiency and low power consumption

Versatile compatibility with a wide range of lithium-ion/polymer batteries

Cost-effective solution for battery-powered devices

Quality and Safety Features

Meets stringent quality standards for reliable performance

Integrated protection circuitry ensures safe operation and prevents hazards

Compatibility

Suitable for use with 1-cell lithium-ion/polymer battery packs

Application Areas

Portable electronics

Power tools

Medical devices

Industrial equipment

Backup power supplies

Product Lifecycle

The diodes AP9101CK6-BSTRG1 is an active product. There are no known equivalent or alternative models available at this time. If you have any questions or require further information, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What are the key electrical specifications for the AP9101CK6-BSTRG1 battery protection IC when used in a single-cell lithium-ion or polymer power system?: The AP9101CK6-BSTRG1 operates within a supply voltage range of 2.5V to 5.5V, making it suitable for low-power applications such as portable devices and IoT sensors. It provides precise overvoltage protection (OVP) at 4.3V ±25mV and undervoltage protection (UVP) at 2.4V ±100mV, ensuring safe operation across typical lithium-ion cell discharge cycles. Its overcurrent detection threshold is set at 1.2A ±15% with a propagation delay of less than 1µs, enabling rapid response to short-circuit conditions. These parameters collectively support reliable cell monitoring while maintaining compatibility with standard 3.7V nominal lithium-based chemistries.

How does the AP9101CK6-BSTRG1 compare to alternative models like the BQ29733DSET in terms of package size, fault response, and integration level for space-constrained designs?: While both the AP9101CK6-BSTRG1 and BQ29733DSET provide similar overvoltage and overcurrent protection for single-cell lithium-ion systems, the AP9101CK6-BSTRG1 uses an SOT-23-6 footprint—smaller than the QFN-8 package of the BQ29733DSET—making it advantageous in compact form factors. However, the BQ29733DSET offers higher precision thresholds (±10mV vs. ±25mV) and includes integrated delay timing for overcurrent events, whereas the AP9101 relies on external RC components for timing. For high-density PCB layouts requiring minimal board area, the AP9101CK6-BSTRG1’s smaller package may justify its slightly looser tolerances, provided design margins account for threshold variations.

What considerations apply when selecting the AP9101CK6-BSTRG1 for a battery-powered wearable device operating in industrial temperature ranges?: The AP9101CK6-BSTRG1 supports an operating temperature range from -40°C to 85°C, which aligns with industrial-grade requirements. However, lithium-ion cells themselves exhibit reduced capacity and increased internal resistance below 0°C, so system-level thermal management must ensure the protection IC remains within its specified junction limits during cold-start scenarios. Additionally, the IC’s MSL rating of Level 1 allows unlimited floor life under dry storage conditions, simplifying handling in automated assembly lines without requiring special humidity-controlled environments.

Can the AP9101CK6-BSTRG1 be used safely with lithium-polymer batteries that have tighter voltage regulation needs than standard lithium-ion cells?: Yes, the AP9101CK6-BSTRG1 is compatible with both lithium-ion and lithium-polymer chemistries due to its fixed 4.3V OVP and 2.4V UVP thresholds, which are standard for most commercial Li-Po cells. However, some high-capacity Li-Po variants may require tighter cutoff voltages during deep discharge to preserve cycle life. In such cases, the user must verify that the AP9101CK6-BSTRG1’s undervoltage threshold does not trigger prematurely under load, potentially causing unexpected shutdowns. External voltage supervisors or firmware-based monitoring might then complement the IC’s hardware protections.

What external components are required to configure the AP9101CK6-BSTRG1 for accurate overcurrent fault detection in a high-impedance battery path?: To set the overcurrent detection level, an external resistor must be connected between the CS pin and ground. Based on the internal comparator reference and typical propagation delay constraints, a 0.1Ω shunt resistor yields approximately 1.2A trip current, matching the datasheet’s nominal specification. The total loop resistance, including PCB trace impedance and connector contact resistance, should remain below 0.02Ω to avoid false triggering due to IR drop. A small ceramic capacitor near the VDD pin (e.g., 100nF) stabilizes the supply rail and suppresses transient noise during switching events.

Does the AP9101CK6-BSTRG1 provide reverse polarity protection, and if not, what additional circuitry is needed when integrating it into a USB-powered handheld device?: The AP9101CK6-BSTRG1 does not include built-in reverse polarity protection; it only monitors for overvoltage, undervoltage, and overcurrent conditions in one direction. If reverse insertion risk exists—such as in user-replaceable battery compartments—an external P-channel MOSFET configured as a high-side switch with a Schottky diode can block reverse current flow. Alternatively, placing a fuse in series with the battery and using a dedicated reverse-current IC may offer more robust protection, especially in consumer products where accidental misinsertion is common.

How should layout parasitics affect the placement of the AP9101CK6-BSTRG1 relative to the battery terminals in a high-current discharge application?: Parasitic inductance in the battery sense path can distort the true current signature seen by the IC’s internal comparator, potentially delaying or masking fast transients. Therefore, the CS pin connection should run directly from the battery terminal to the sense resistor with minimal loop area, avoiding vias or long traces. Kelvin connections are unnecessary here due to the low-impedance path, but keeping the return path short ensures accurate fault detection. Ground plane stitching under the IC also minimizes noise coupling into sensitive analog nodes during peak load events.

Are there any known limitations in using the AP9101CK6-BSTRG1 alongside fast-charging algorithms that deliver surge currents above 2A for brief durations?: The AP9101CK6-BSTRG1 is designed for continuous overcurrent detection up to 1.2A, but brief surges (e.g., 2A pulses lasting <10ms) may not immediately trigger shutdown due to the inherent comparator hysteresis and response time. If the system employs burst-mode charging or pulse charging techniques common in some Li-Po chargers, the protection IC may fail to intervene before cell stress occurs. In such designs, coordination with the charger IC’s current limit or adding a separate current-sense amplifier with adjustable threshold may be necessary to maintain safety margins.

What impact do solder reflow profiles have on the reliability of the AP9101CK6-BSTRG1 mounted in surface-mount battery modules?: As an RoHS-compliant component rated for MSL1, the AP9101CK6-BSTRG1 can withstand standard lead-free reflow profiles (typically peak temperatures of 240–260°C). However, prolonged exposure above 250°C may degrade the bond wires inside the SOT-23-6 package, increasing failure risk over time. Designers should confirm that their assembly process adheres to IPC-JEDEC standards and avoids excessive dwell times above 240°C. Reflow profiling with thermocouples attached directly to similar packages is recommended to validate thermal stress exposure.

Can the AP9101CK6-BSTRG1 be substituted with other Diodes Incorporated variants like the AP9101CK6-COTRG1 in existing PCB footprints?: Yes, the AP9101CK6-BSTRG1 shares the same pinout and core functionality with other variants such as the COTRG1 and BJTRG1, allowing interchangeability within the same SOT-23-6 footprint. However, slight differences in threshold voltages or packaging orientation (tape reel vs. cut tape) must be verified against procurement specifications. All listed substitutes are functionally equivalent per manufacturer documentation, but traceability and batch consistency should be confirmed when substituting in safety-critical applications.

What diagnostic features does the AP9101CK6-BSTRG1 offer to indicate active protection states during system debugging?: The IC lacks dedicated status pins but indicates fault conditions through its output control logic: during normal operation, the CO (Charge Overload) pin remains high; when an overcurrent or overvoltage event occurs, it pulls low to disable the load path. By monitoring this pin with a microcontroller or logic analyzer, developers can log protection triggers post-event. This indirect feedback requires external latching circuitry or periodic polling but enables basic fault diagnosis without additional hardware overhead.

How does the AP9101CK6-BSTRG1 handle recovery after an overvoltage condition caused by charging a fully discharged cell?: Upon detecting an overvoltage state (VDD > 4.3V), the AP9101CK6-BSTRG1 disables the charge path and holds the CO pin low until the battery voltage drops below the UVP threshold (2.4V) and remains stable for a defined period. Once recovered, the IC re-enables normal operation automatically. This prevents nuisance tripping during partial recovery phases and ensures the cell returns to a safe state before allowing further charging, aligning with standard lithium-cell safety protocols.

Is it acceptable to use the AP9101CK6-BSTRG1 in a multi-stage battery management system where another controller already performs overvoltage monitoring?: While redundant protection layers enhance safety, adding the AP9101CK6-BSTRG1 alongside a primary BMS IC introduces potential conflicts in timing and control signals. If the primary controller disables charging first, the secondary IC may never activate, leading to confusion during fault analysis. Instead, using the AP9101CK6-BSTRG1 as a standalone layer provides simpler, faster response to abrupt faults like internal shorts. Redundancy should be implemented carefully, possibly with coordinated enable/disable sequencing, to avoid race conditions.

What precautions should be taken when prototyping circuits using the AP9101CK6-BSTRG1 to prevent unintended latch-up during initial power-up sequences?: During startup, inrush current from capacitors or inductive loads can momentarily exceed the 1.2A threshold before the IC fully initializes. To mitigate this, a soft-start circuit or pre-charge stage may be added upstream. Additionally, ensuring stable VDD ramp rates (<50V/µs) prevents brownout conditions that could corrupt internal logic states. Using bypass capacitors close to the IC’s power pins and verifying clean ground references during early bring-up helps avoid erratic behavior that might mimic genuine fault events.

How does the absence of an I²C or SMBus interface in the AP9101CK6-BSTRG1 affect its suitability for smart battery applications requiring telemetry reporting?: Unlike advanced fuel gauges or multi-function PMICs, the AP9101CK6-BSTRG1 is a passive protection-only device with no digital communication interface. This simplifies firmware development but limits visibility into real-time cell health metrics such as remaining capacity or temperature. For applications requiring data logging or remote diagnostics, an external microcontroller must sample analog signals (voltage and current) independently and correlate them with protection events logged via the CO pin, adding complexity to the overall system architecture.

Parts with Similar Specifications

The three parts on the right have similar specifications to Diodes Incorporated AP9101CK6-BSTRG1

Product Attribute
Part Number	AP9101CK6-CBTRG1	AP9101CK6-BWTRG1	AP9101CK6-BNTRG1	AP9101CK6-BVTRG1
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Fault Protection	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Number of Cells	-	-	-	-
Battery Chemistry	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Series	-	-	-	-
Interface	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Function	-	-	-	-

AP9101CK6-BSTRG1 Datasheet PDF

Download AP9101CK6-BSTRG1 pdf datasheets and Diodes Incorporated documentation for AP9101CK6-BSTRG1 - Diodes Incorporated.

Environmental Information: Diodes Environmental Compliance Cert.pdf

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I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
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one of my hobbies is skydiving. and when i'm skydiving this works great.
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This product works considerably well. It secretly improves my basketball by a lot.
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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

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