BQ2005SG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The Texas Instruments BQ2005SG4 is a fast charge management IC designed for NiCd and NiMH dual battery applications, supporting up to 2000mA charge current with PWM current-mode control. It operates from a 4.5V to 5.5V supply and integrates dual battery fast charger functionality in a 20-pin SOIC package. This device streamlines portable device charging design by providing complete charge management in a compact, easy-to-integrate solution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- BQ2005SG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual battery fast charger capability manages two NiCd/NiMH battery packs simultaneously for efficient charging systems
- PWM current-mode control delivers up to 2000mA charge current with precise regulation and fast charge termination
- Narrow 4.5V to 5.5V supply range enables direct operation from USB or regulated 5V power sources
- Integrated fast charge management reduces external component count for compact portable battery charger designs
Applications
The BQ2005SG4 is ideal for portable consumer electronics requiring fast charging of NiCd or NiMH battery packs, such as cordless phones, handheld tools, and portable medical devices. Its dual battery support and PWM current-mode control make it well-suited for power tool chargers and industrial handheld equipment where simultaneous dual-pack charging is needed. The compact 20-pin SOIC package simplifies PCB layout and integration into space-constrained charger designs operating from standard 5V supplies.
Specifications
| YTEOL | 0 |
| Additional Feature | DUAL BATTERY FAST CHARGER |
| Analog IC - Other Type | BATTERY MONITOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.005A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 300kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What battery chemistries does the BQ2005SG4 support?
The BQ2005SG4 supports both NiCd (Nickel-Cadmium) and NiMH (Nickel-Metal Hydride) battery chemistries, making it a versatile fast charge management solution for a wide range of portable battery-powered products and charging systems.
What is the maximum charge current of the BQ2005SG4?
The BQ2005SG4 supports fast charge currents up to 2000mA (2A) using PWM current-mode control, enabling rapid charging of NiCd and NiMH battery packs while maintaining precise current regulation for safe and efficient charge management.
What is the operating supply voltage range for the BQ2005SG4?
The BQ2005SG4 operates from a supply voltage range of 4.5V to 5.5V, with a nominal voltage of 5V, allowing it to be powered directly from a USB port or standard regulated 5V power supply in typical portable charger applications.
Can the BQ2005SG4 charge two battery packs at once?
Yes, the BQ2005SG4 is specifically designed as a dual battery fast charger, capable of managing charging for two separate NiCd or NiMH battery packs simultaneously, which is ideal for multi-pack charging stations and dual-battery portable devices.
What package is the BQ2005SG4 available in?
The BQ2005SG4 comes in a 20-pin SOIC (Small Outline Integrated Circuit) package, designated by JESD-30 code R-PDSO-G20, providing a compact surface-mount footprint suitable for automated PCB assembly in charger and power management designs.
Related Guides
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
TL084CN Equivalent and Replacements: JFET-Input Quad Op-Amp Comparison Guide
Compare TL084CN with TL074, LF347, and LM324 quad op-amps. Pin-compatible equivalents, key specs, and when to choose each for your analog design.
May 20, 2026
TPS386000RGPR Quad Voltage Supervisor: Selection and Sourcing Guide (2025)
Compare TPS386000RGPR with TPS386040RGPR, TPS3700, and TPS3823 voltage supervisors. Key specs, threshold programming, watchdog options, and sourcing tips.
May 20, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”