Unclassified The DW01A is a battery protection IC that protects against overcurrent, overcharge, and over-discharge and comes in a small SOT-23-6 package.
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Oct 24, 2021
Cora Arnold
Lithium Battery Protection using DW01 and TC4056 USB Tested and Explained
Unclassified
The DW01A is a battery protection IC that protects against overcurrent, overcharge, and over-discharge and comes in a small SOT-23-6 package. This article mainly covers datasheet pdf, circuit schematic, alternative, features, and other details about DW01A battery protection IC. Furthermore, there is a huge in stock. Welcome your RFQ!
DW01A
The DW01A battery protection IC is designed to protect lithium-ion/polymer battery from damage or degrading the lifetime due to overcharge, over-discharge, and/or overcurrent for one-cell lithium-ion/polymer battery-powered systems, such as cellular phones.
The DW01A-ultra-small G's design and minimal exterior components make it perfect for integration into battery packs with limited space. The safe and full usage charging is ensured by the exact 50mV overcharging detection voltage. During storage, the very low standby current drains very little current from the battery.
DW01A Pinout
| Pin Number | Pin Name | Pin Description |
| 1 | OD | Discharge control MOSFET gate pin |
| 2 | CS | Current sense and charger detect input |
| 3 | OC | Charge control MOSFET gate pin |
| 4 | TD | Delay time reduction test pin |
| 5 | VCC | Power supply pin |
| 6 | GND | IC ground reference |
DW01A Functional Block Diagram
Low supply current
Overcharge detection voltage: 4.300±0.050 V
Overcharge release voltage: 4.100±0.05 V
Over-discharge detection voltage: 2.40±0.10 V
Over-discharge release voltage: 3.00±0.10 V
Over-current detection voltage: 150±30 mV
Short circuit detection voltage: 1.35 V
Delay time generated by the internal circuit
Charger detection voltage: -0.7 V
Reset resistor for overcurrent protection: >500KΩ
Wide supply voltage range: 1.8 ~ 9.0 V
SOT-23-6 package
AP9101Cxxx-ANTRG1 series, AP9101CAK6-ANTRG1
Protection IC for One-Cell Lithium-Ion
Lithium-Polymer Battery Pack
Cellular phone
PDA
DSC
Handheld devices
The circuit below shows how the DW01A chip is supposed to be used:
DW01A Typical Application Circuit
It is designed to be coupled to a battery pack as part of a single unit that includes the battery and the DW01A chip.
This is true because of the following:
The CS pin protects from reverse connecting of a charger.
Voltage limits for over and under voltage detection are outside normal charging / discharged levels. They are specified to be extreme values.
Latchup protection when a charger is connected under over-discharged conditions.
The operating current is so low it won't discharge the battery if left in place attached to the battery.
When used as part of a battery pack, it protects against the charger connected to BATT+ and BATT-, as well as reverse polarity protection from plugging in a charger the wrong way around or even plugging in a completely improper and dangerous charger, such as a NiCad or NiMh charger (do not try this).
PUOLOP is one of the earliest companies engaged in the design and sales of low-voltage differential voltage stabilized circuit (LDO), MOS tube, power management IC and power semiconductor devices in China, specializing in the design, production, and sales of various power management IC and power semiconductor devices.
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