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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Management

Diodes Incorporated AP9101CK-BHTRG1

Name: AP9101CK-BHTRG1
Brand: Diodes Incorporated
SKU: AP9101CK-BHTRG1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP9101CK-BHTRG1

Manufacturer:: Diodes Incorporated

Category:: Battery Management

Package:: SC-74A, SOT-753

Datasheet:: AP9101CK-BHTRG1.pdf

Description:: IC BATT PROT LI-ION 1CELL SOT25

Quantity:: RFQ Add To RFQ list

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Inventory:4,195

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Product details

Overview

AP9101CK-BHTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.425 V ±25 mV, overdischarge detection at 2.500 V ±35 mV, and discharge overcurrent detection at 0.150 V ±15 mV. It integrates fixed delay timing, 0V battery charge enable, and selectable power-down mode, and is used in portable power tools and medical handheld devices requiring precise cell-level safety control.

For engineers reviewing the AP9101CK-BHTRG1 datasheet, AP9101CK-BHTRG1 pinout, AP9101CK-BHTRG1 application, or AP9101CK-BHTRG1 equivalent, this page delivers verified voltage thresholds, MOSFET gate drive behavior, SOT25 package mapping, and real-world protection timing values - all confirmed from Diodes' official DS37771 Rev. 8-3 datasheet.

Technical Context

The AP9101CK-BHTRG1 implements dual-MOSFET control via separate CO (charge) and DO (discharge) gate outputs, with independent voltage and current fault detection paths. Its internal logic uses VM–VSS differential sensing for current monitoring and VDD–VSS for cell voltage, enabling simultaneous overcharge, overdischarge, and overcurrent protection without external capacitors.

It supports auto-release overcharge protection and includes an overvoltage charger detection circuit (8.0 V ±2 V) that directly disables CO without delay. The device operates across –40°C to +85°C with supply voltage from 1.5 V to 5.5 V and features high-voltage tolerance (up to 30 V between VDD and VM pins) using Diodes' high-voltage CMOS process.

Key Specifications

Parameter	Value and Actual Design Meaning
Overcharge Detection Voltage	4.425 V ±25 mV - triggers CO shutdown when cell voltage exceeds threshold for ≥t_CU (typ. 1.0 s)
Overdischarge Detection Voltage	2.500 V ±35 mV - initiates DO shutdown during discharge if cell drops below threshold for ≥t_DL (typ. 100 ms)
Discharge Overcurrent Threshold	0.150 V ±15 mV - detects excessive load current via VM–VSS sense voltage, disabling DO after t_DOC (typ. 12 ms)
Supply Current (Operation)	3.0 µA typ. at +25°C - enables ultra-low-power operation in battery-powered systems with long standby life
Power-Down Current	0.01 µA typ. - reduces system quiescent draw during storage or deep sleep states
0V Battery Charge Function	Enabled - allows safe recharging of fully depleted cells (0 V) using external charger
Package	SOT25 - 5-pin surface-mount package with 0.95 mm pitch, optimized for compact battery pack PCB layouts

Pinout & Package

SOT25 package: 5-pin, small-outline transistor outline with gull-wing leads; pin 1 marked; RoHS-compliant, halogen-free, lead-free construction.

Pin/Terminal	Circuit Role	Design Meaning
VM	Current Sense Input	Differential input referenced to VSS; monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit events
VDD	Positive Supply Input	Connects to battery positive terminal; powers internal circuitry and provides reference for CO/DO gate drive
VSS	Negative Supply Input	Connects to battery negative terminal; serves as ground reference for all analog and digital blocks
DO	Discharge Control Output	Drives gate of external N-channel MOSFET in discharge path; pulls low to disable discharge during overdischarge or overcurrent faults
CO	Charge Control Output	Drives gate of external N-channel MOSFET in charge path; pulls low to halt charging during overcharge, overvoltage charger, or charge overcurrent conditions

Key Features

Feature	Design Value
Fixed Delay Timing Circuit	Eliminates need for external timing capacitors - simplifies BOM and improves production consistency for t_CU, t_DL, t_DOC, and t_SHORT
High-Accuracy Voltage Detection	±25 mV overcharge detection accuracy ensures reliable cell voltage clamping within JEITA limits for Li+ chemistry
Selectably Enabled 0V Charging	Permits recovery of deeply discharged batteries without manual intervention or external wake-up circuitry
Overvoltage Charger Protection	8.0 V ±2 V detection on VDD–VM prevents damage from faulty or mismatched chargers without added components
Ultra-Low Power-Down Mode	0.01 µA typical current draw extends shelf life and minimizes self-discharge impact in long-term storage

Applications

Power Tool Battery Packs

Medical Handheld Devices

Use Scenario: Cordless drill/driver battery packs subject to high-current pulses and thermal stress during operation.

IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, charge/discharge current, and charger overvoltage in real time.

Use Value: Prevents thermal runaway by cutting off charge at 4.425 V and disabling discharge at 2.500 V, while tolerating 30 V transients on VM–VDD.

Use Scenario: Portable ECG monitors and infusion pumps requiring fail-safe battery management under IEC 60601-1 compliance.

IC Role / Device Role / Timing Role: Safety-critical protector enforcing strict overdischarge release hysteresis (2.900 V) and short-circuit response (<1 µs).

Use Value: Ensures uninterrupted operation via 0V battery charge enable and maintains regulatory compliance with ±35 mV V_DL accuracy.

Wearable Fitness Trackers

Bluetooth Headset Batteries

Use Scenario: Slim-profile wearables with space-constrained 1S LiPo cells and aggressive power cycling.

IC Role / Device Role / Timing Role: Low-quiescent protector minimizing standby drain while delivering fast short-circuit cutoff (t_SHORT = 250 ns typ.)

Use Value: Extends runtime with 3.0 µA operating current and enables rapid fault isolation before PCB trace damage occurs.

Use Scenario: True wireless stereo earbuds with frequent charge cycles and risk of reverse-polarity connection.

IC Role / Device Role / Timing Role: Dual-path protector using R1/R2 resistors to limit reverse-connection current and prevent latch-up.

Use Value: Supports robust field use with built-in polarity-reversal protection and auto-wake-up capability after overdischarge.

Equivalent & Alternatives

The following parts are listed as comparable options for similar lithium-ion battery protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5460N255AA-TR	Fixed 4.25 V overcharge threshold; no 0V charge function; SOT23-6 package	Lacks configurable V_CU/V_CL and 0V recovery - suitable only for legacy 4.2 V nominal cells	Choose only if design requires strict 4.25 V OCV clamp and space permits SOT23-6 footprint
BD14000FVJ-E2	Integrated charge/discharge MOSFETs; higher 5.5 µA operating current; 4.20 V fixed OCV	Monolithic solution eliminates external FETs but increases thermal load and reduces flexibility in current rating selection	Prefer when board area is critical and external MOSFET layout complexity must be avoided

Compared with R5460N255AA-TR and BD14000FVJ-E2, the AP9101CK-BHTRG1 offers programmable voltage thresholds, guaranteed 0V charge support, and lower operating current - making it optimal for next-generation 4.4 V Li+ cells where precision, recovery capability, and standby efficiency are prioritized.

Availability

AP9101CK-BHTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, medical handheld devices, and wearable fitness trackers requiring stable component supply, long-lifecycle assurance, and RoHS/Green compliance.

Supply support for AP9101CK-BHTRG1 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 manufacturer specializing in discrete, analog, and mixed-signal solutions, with emphasis on power management, protection, and signal integrity products.

The AP9101C series belongs to Diodes' battery protection IC product line, designed specifically for high-accuracy, low-power, single-cell Li+ and Li-polymer battery pack safety - targeting portable industrial, medical, and consumer applications.

FAQ

What is the function of the VM pin on the AP9101CK-BHTRG1?

The VM pin serves as the current-sense input referenced to VSS. It monitors the voltage drop across an external sense resistor to detect discharge overcurrent, charge overcurrent, and short-circuit conditions. Its internal resistance network (RVMS/RVMD) enables automatic status-dependent biasing during fault modes, eliminating need for external switching circuitry.

Does AP9101CK-BHTRG1 support automatic recovery from overdischarge?

Yes - the "BH" suffix indicates factory-configured auto-wake-up mode. When the battery voltage rises above the overdischarge release voltage (2.900 V), the device automatically exits overdischarge state and re-enables DO output without requiring external charger connection or manual reset.

Can AP9101CK-BHTRG1 be used with 4.35 V or 4.4 V Li+ cells?

Yes - its overcharge detection voltage is factory-set to 4.425 V with ±25 mV accuracy, making it compatible with modern high-voltage Li+ chemistries. The 5 mV step resolution and tight tolerance ensure safe operation without premature cutoff or unsafe overcharge exposure.

How does the overvoltage charger protection work on AP9101CK-BHTRG1?

It continuously monitors voltage between VDD and VM pins. If this exceeds 8.0 V ±2 V, the CO pin is driven low immediately (no delay) to disable the charge MOSFET. Recovery occurs when voltage falls below 7.3 V ±2 V, restoring charge path functionality without user intervention.

AP9101CK-BHTRG1 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-BHTRG1 FAQ

1.How can I place an order for AP9101CK-BHTRG1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP9101CK-BHTRG1 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-BHTRG1 reliable?

The price and inventory of AP9101CK-BHTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-BHTRG1 is usually 5 days.

3.What payment methods are accepted for AP9101CK-BHTRG1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-BHTRG1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP9101CK-BHTRG1?

AP9101CK-BHTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP9101CK-BHTRG1 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-BHTRG1?

For technical support, including AP9101CK-BHTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-BHTRG1 requirements.

6.How does Aetrix verify that AP9101CK-BHTRG1 is sourced from the original manufacturer or authorized distributors?

All AP9101CK-BHTRG1 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-BHTRG1 meets industry standards.

7.What is the process for return or replacement of AP9101CK-BHTRG1?

All AP9101CK-BHTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-BHTRG1, 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-BHTRG1 part is unused and in its original packaging.

Return procedure for AP9101CK-BHTRG1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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