LTC4002
PRODUCTIONStandalone Li-Ion Switch Mode Battery Charger
- Part Models
- 8
- 1ku List Price
- Starting From $3.05
Overview
- Wide Input Supply Range:
- 4.7V to 22V – 4.2 Version
- 8.9V to 22V – 8.4 Version
- High Efficiency Current Mode PWM Controller with
500kHz Switching Frequency - ±1% Charge Voltage Accuracy
- End-of-Charge Current Detection Output
- 3 Hour Charge Termination Timer
- Constant Switching Frequency for Minimum Noise
- ±5% Charge Current Accuracy
- Low 10µA Reverse Battery Drain Current
- Automatic Battery Recharge
- Automatic Shutdown When Input Supply is Removed
- Automatic Trickle Charging of Low Voltage Batteries
- Battery Temperature Sensing and Charge
Qualification - Stable with Ceramic Output Capacitor
- 8-Lead SO and 10-Lead DFN Packages
The LTC4002 is a complete battery charger controller for one (4.2V) or two (8.4V) cell lithium-ion batteries. With a 500kHz switching frequency, the LTC4002 provides a small, simple and efficient solution to fast charge Li-Ion batteries from a wide range of supply voltages. An external sense resistor sets the charge current with ±5% accuracy. An internal resistor divider and precision reference set the final float voltage to 4.2V per cell with ±1% accuracy.
When the input supply is removed, the LTC4002 automatically enters a low current sleep mode, dropping the battery drain current to 10µA. An internal comparator detects the near end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin.
The LTC4002 is available in the 8-lead SO and 10-lead DFN packages.
Applications
- Portable Computers
- Charging Docks
- Handheld Instruments
Documentation
Data Sheet 1
User Guide 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4002EDD-4.2#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4002EDD-4.2#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4002EDD-8.4#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4002EDD-8.4#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4002ES8-4.2#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4002ES8-4.2#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4002ES8-8.4#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4002ES8-8.4#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC4002ES8-4.2#PBF | PRODUCTION | |
| LTC4002ES8-4.2#TRPBF | PRODUCTION | |
| LTC4002ES8-8.4#PBF | PRODUCTION | |
| LTC4002ES8-8.4#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC4002ES8-4.2#PBF | PRODUCTION | |
| LTC4002ES8-4.2#TRPBF | PRODUCTION | |
| LTC4002ES8-8.4#PBF | PRODUCTION | |
| LTC4002ES8-8.4#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC4002ES8-4.2#PBF | PRODUCTION | |
| LTC4002ES8-4.2#TRPBF | PRODUCTION | |
| LTC4002ES8-8.4#PBF | PRODUCTION | |
| LTC4002ES8-8.4#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 1 | ||
| LTM8062 | RECOMMENDED FOR NEW DESIGNS | 32VIN, 2A μModule (Power Module) Power Tracking Battery Charger |
| Battery Monitors & Fuel Gauges 1 | ||
| LTC2942 | Obsolete | Battery Gas Gauge with Temperature, Voltage Measurement |
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC2954 | RECOMMENDED FOR NEW DESIGNS | Push Button On/Off Controller with µP Interrupt |
Evaluation Kits
LTC4002EDD-4.2 | Li-Ion Battery Charger with Charge Termination, +VIN = 5.2V to 24V, 3A Charge Current
Resources
LTC4002EDD-4.2 | Li-Ion Battery Charger with Charge Termination, +VIN = 5.2V to 24V, 3A Charge Current
Resources
LTC4002EDD-8.4 | Li-Ion Battery Charger with Charge Termination, +VIN = 9.3V to 24V, 3A Charge Current
Resources
LTC4002EDD-8.4 | Li-Ion Battery Charger with Charge Termination, +VIN = 9.3V to 24V, 3A Charge Current