DW01A HMSEMI | Alldatasheet
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GGeenneerraall DDeessccrriippttiioonn OOrrddeerriinngg IInnffoorrmmaattiioonn DW01A The DW01A battery protection IC is designed to protect lithium-ion/polymer battery from damage or degrading the lifetime due to overcharge, overdischarge, and/or ov ercurrent for one-cell lithium-ion/polymer battery powered systems, such as cellular phones. PACKAGE TYPE SOT-23-6 TEMPERATURE RANGE -40°C~+85°C The ultra-small package and less required external components make it ideal to integrate the DW01A into the limited space of battery pack. The accurate ±50mV overcharging detection voltage ensures safe and full utilization charging. The very low standby current drains little current from the cell while in storage. OVERCHARGE PROTECTION 4.3V± 50mV FFeeaattuurreess AApppplliiccaattiioonnss z Reduction in Board Size due to Miniature Package SOT-23-6. z Protection IC for One-Cell Lithium-Ion / Lithium-Polymer Battery Pack z Ultra-Low Quiescent Current at 3μA (Vcc=3.6V). z Overdischarge Current at 4μA (Vcc= V). z Precision Overcharge Protection Voltage 4.3V ± 50mV z Two Detection Levels for Overcurrent Protection. z Delay times are generated by internal circuits. No external capacitors required. DW01A 1.8 Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
PPrroodduucctt NNaammee LLiisstt Package Product SOT-23-6 Overcharge detection voltage [VOCP] (V) Overcharge release voltage [VOCR] (V) Overdischarge detection voltage [VODP] (V) Overdischarge release voltage [VODR] (V) Overcurrent detection voltage [VOI1] (mV) PPiinn CCoonnffiigguurraattiioonn 1 2 3 6 4 SOT-23-6 TOP VIEW Pin No. Symbol Description
1 OD MOSFET gate connection pin for discharge control
2 CS Input pin for current sense, charger detect
3 OC MOSFET gate connection pin for charge control
4 TD Test pin for reduce delay time
5 VCC Power supply, through a resistor (R1)
6 GND Ground pin
FFuunnccttiioonnaall BBlloocckk DDiiaaggrraamm VSS OC VSS VSS VSS VCC GND CS Charger Detector OD Control Logic Short circuit Detector Over current Detector Oscillator Control CircuitOvercharge Detector Overdischarg e Detector Divider Control Logic TD VSS DW01A Auto Recovery battery charge function available Stand by function release Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
TTyyppiiccaall AApppplliiccaattiioonn CCiirrccuuiitt DW01A OC OD GND CS BATT- M1 M2 1kΩ 100Ω VCC BATT+ TD 0.1μF AAbbssoolluuttee MMaaxxiimmuumm RRaattiinnggss (VSS=0V, Ta=25°C unless otherwise specified) Item Symbol Rating Unit Input voltage between VDD and VSS VDD 0.3 to 10 V OC output pin voltage VOC VDD-24 to VDD+0.3 V OD output pin voltage VOD VSS-0.3 to VDD+0.3 V CS input pin voltage VCS VDD-24 to VDD+0.3 V Operating Temperature Range TOP -40 to +85 °C Storage Temperature Range TST -40 to +125 °C DW01A Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
EElleeccttrriiccaall CChhaarraacctteerriissttiiccss (Ta=25°C unless otherwise specified) PARAMETER TEST CONDITIONS SYMBOL Min Typ Max UNIT Supply Current VCC=3.6V ICC 3.0 6.0 μA Power-Down Current VCC=1.8V IPD 4 μA Overcharge Protection Voltage VOCP 4.25 4.30 4.35 V Overcharge Release Voltage VOCR 4.05 4.10 4.15 V Overdischarge Protection Voltage VODP 2.30 2.40 2.50 V Overdischarge Release Voltage VODR 2.90 3.00 3.10 V Overcurrent Protection Voltage VOIP（VOI1） 120 150 180 mV Short Current Protection Voltage VCC=3.0V VSIP（VOI2） 1.0 1.4 V Overcharge Delay Time TOC 200 ms Overdischarge Delay Time VCC=3.2V to 2.0V TOD 200 ms Overcurrent Delay Time (1) VCC=3.0V TOI1 ms Overcurrent Delay Time (2) VCC=3.5V TOI2 μs Charger Detection Threshold Voltage VCH -1.2 -0.7 -0.2 V OD Pin Output “H” Voltage VDH VCC-0.1 VCC-0.02 V OD Pin Output “L” Voltage VDL 0.5 V OC Pin Output “H” Voltage VCH VCC-0.1 VCC-0.02 V OC Pin Output “L” Voltage VCL 0.1 0.5 V DW01A 1.2 VV 0V Battery Charge Starting Charger Voltage 0CHA Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
TTiimmiinngg DDiiaaggrraamm 1. Overcharge Condition ÆLoad Discharging Æ Normal Condition VOCP VOCR VODR VODP Charger Load VCC CS VCC GND VCC GND Battery VoltageOC PinOD PinCS Pin TOC TOC VOI1 VCH DW01A Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
- Overdischarge Condition Æ Charging by a Charger ÆNormal Condition VOCP VOCR VODR VODP Charger Load VCC CS VCC GND VCC GND Battery VoltageOC PinOD PinCS Pin TOD TOD VCH VOI2 DW01A Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com
- Over Current Condition Æ Normal Condition VOCP VOCR VODR VODP Charger Load VCC CS VCC GND VCC VOI1 Battery VoltageOC PinOD PinCS Pin TOI1 TOI2 GND VOI2 DW01A Shenzhen H&M Semiconductor Co.Ltd http.//www.hmsemi.com