DW01H FORTUNE | Alldatasheet
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REV. 1.1 DW01H-DS-11_EN JAN 2014 Datasheet DW01H One Cell Lithium-ion/Polymer Battery Protection IC FORTUNE' Properties For Reference Only
Fortune Semiconductor Corporation 富晶電子股份有限公司 23F, No. 29-5, Sec. 2, Zhongzheng E. Rd., Danshui Dist, New Taipei City 251, Taiwan Tel.：886-2-28094742 Fax：886-2-28094874 www.ic-fortune.com This manual contains new product information. Fortune Semiconductor Corporation reserves the rights to modify the product specification without fu rther notice. No liab ility is assumed by Fortune Semiconductor Corporation as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.1 2/13 FORTUNE' Properties For Reference Only
- General Description The DW01H battery protection IC is designed to protect lithium-ion/polymer battery from damage or degrading the lifetime due to overcharge, overdischarge, and/or overcurrent for one-cell lithium-ion/polymer battery powered systems, such as cellular phones. The ultra-small package and less required external components make it ideal to integrate the DW01H 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. 2. Features z Reduction in Board Size due to Miniature Package SOT-23-6. z Ultra-Low Quiescent Current at 2.5μA (Vcc=3.9V). z Ultra-Low Overdischarge Current at 1.8μA (Vcc=2.0V). z Precision Overcharge Protection Voltage 4.28V ± 25mV z Load Detection Function during Overcharge Mode. z Two Detection Levels for Overcurrent Protection. z Delay times are generated by internal circuits. No external capacitors required. 3. Ordering Information DW01H-G PACKAGE TYPE SOT-23-6(G stands for Green-Package) TEMPERATURE RANGE -40°C~+85°C 4. Applications z Protection IC for One-Cell Lithium-Ion / Lithium-Polymer Battery Pack Rev. 1.1 3/13 FORTUNE' Properties For Reference Only
- Product Name List Model Package Overcharge detection voltage [VOCP] (V) Overcharge release voltage [VOCR] (V) Overdischarge detection voltage [VODP] (V) Overdischarge release voltage [VODR] (V) Overcurrent detection voltage [VOI1] (V) change function Standby function release recovery 6. Pin Configuration and Package Marking Information 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 NC NC
5 VCC Power supply, through a resistor (R1)
6 GND Ground pin
Top Point and Under_line：Lot No. Bottom Point：Year w : week, A~Z & A ~ Z Rev. 1.1 4/13 FORTUNE' Properties For Reference Only
- Functional Block Diagram 8. Typical Application Circuit Rev. 1.1 5/13 FORTUNE' Properties For Reference Only
- Absolute Maximum Ratings (GND=0V, Ta=25°C unless otherwise specified) Item Symbol Rating Unit Input voltage between VCC and GND * VCC GND-0.3 to GND+15 V CS input pin voltage VCS VCC -30 to VCC +0.3 V Operating Temperature Range TOP -40 to +85 °C Storage Temperature Range TST -40 to +125 °C Note: DW01H contains a circuit that will protect it from static discharge; but please take special care that no excessive static electricity or voltage which exceeds the limit of the protection circuit will be applied to it. Rev. 1.1 6/13 FORTUNE' Properties For Reference Only
Rev. 1.1 7/13 10. Electrical Characteristics (Ta=25°C unless otherwise specified) PARAMETER TEST CONDITIONS SYMBOL Min Typ Max UNIT Supply Current VCC=3.9V ICC 2.5 5.2 μA Overdischarge Current VCC=2.0V IOD 1.8 4.5 μA Overcharge Protection Voltage DW01H VOCP 4.255 4.280 4.305 V Overcharge Release Voltage VOCR 4.030 4.080 4.130 V Overdischarge Protection Voltage VODP 2.300 2.400 2.500 V Overdischarge Release Voltage VODR 2.400 2.500 2.600 V Overcurrent Protection Voltage VOIP （VOI1） 0.135 0.150 0.165 V Short Current Protection Voltage VCC=3.6V VSIP （VOI2） 0.60 0.70 0.80 V Charger over current detection voltage VDD=3.6V VCOIP -0.120 -0.100 -0.080 V Faulty charger detect voltage Vdet 6.0 8.0 10.0 V Faulty charger recovery voltage Vrec 5.8 7.3 8.8 V 0V charging prohibit VST 0.65 0.95 1.25 V Overcharge Delay Time TOC 130 200 280 ms Overdischarge Delay Time VCC=3.6V to 2.0V TOD 65 100 140 ms Overcurrent Delay Time (1) VCC=3.6V TOI1 13.3 20.0 26.5 ms Overcurrent Delay Time (2) VCC=3.6V TOI2 0.60 1.0 1.80 ms Charge over current delay time VCC=3.6V Tdet 5.10 8.50 12.75 ms FORTUNE' Properties For Reference Only
- Description of Operation Normal Condition If VODP<VCC<VOCP and VCH<VCS<VOI1, M1 and M2 are both turned on. The charging and discharging processes can be operated normally. Overcharge Protection When the voltage of the battery cell exceeds the overcharge protection voltage (VOCP) beyond the overcharge delay time (TOC) period, charging is inhibited by turning off of the charge control MOSFET. The overcharge condition is released in two cases: The voltage of the battery cell becomes lower than the overcharge release voltage (VOCR) through self-discharge. The voltage of the battery cell falls below the overcharge protection voltage (VOCP) and a load is connected. When the battery voltage is above VOCP, the overcharge condition will not release even a load is connected to the pack. Overdischarge Protection When the voltage of the battery cell goes below the overdischarge protection voltage (VODP) beyond the overdischarge delay time (TOD) period, discharging is inhibited by turning off the discharge control MOSFET. The default of overdischarge delay time is 10ms. Inhibition of discharging is immediately released when the voltage of the battery cell becomes higher than overdischarge release voltage (VODR) through charging. Overcurrent Protection In normal mode, the DW01H continuously monitors the discharge current by sensing the voltage of CS pin. If the voltage of CS pin exceeds the overcurrent protection voltage (VOIP) beyond the overcurrent delay time (TOI1) period, the overcurrent protection circuit operates and discharging is inhibited by turning off the discharge control MOSFET. The overcurrent condition returns to the normal mode when the load is released or the impedance between BATT+ and BATT- is larger than 500kΩ. The DW01H provides two overcurrent detection levels (0.15V and 1.35V) with two overcurrent delay time (TOI1 and TOI2) corresponding to each overcurrent detection level. Charge Detection after Overdischarge When overdischarge occurs, the discharge control MOSFET turns off and discharging is inhibited. However, charging is still permitted through the parasitic diode of MOSFET. Once the charger is connected to the battery pack, the DW01H immediately turns on all the timing generation and detection circuitry. Charging progress is sensed if the voltage between CS and GND is below charge detection threshold voltage (VCH). Auto Power Down recovery The IC continues to operate even after the overdischarge state has been entered. The battery voltage rising to the overdischarge release voltage(VODR) or higher is the only required condition for the IC to return to the normal state. Rev. 1.1 8/13 FORTUNE' Properties For Reference Only
- Design Guide Selection of External Control MOSFET Because the overcurrent protection voltage is preset, the threshold current for overcurrent detection is determined by the turn-on resistance of the charge and discharge control MOSFETs. The turn-on resistance of the external control MOSFETs can be determined by the equation: RON=VOIP/ (2 x IT) (IT is the overcurrent threshold current). For example, if the overcurrent threshold current IT is designed to be 3A, the turn-on resistance of the external control MOSFET must be 25m Ω. Be aware that turn-on resistance of the MOSFET changes with temperature variation due to heat dissipation. It changes with the voltage between gate and source as well. (Turn-on resistance of MOSFET increases as the voltage between gate and source decreases). As the turn-on resistance of the external MOSFET changes, the design of the overcurrent threshold current changes accordingly. Suppressing the Ripple and Disturbance from Charger To suppress the ripple and disturbance from charger, connecting R1 and C1 to VCC is recommended. Protection the CS pin R2 is used for latch-up protection when charger is connected under overdischarge condition and overstress protection at reverse connecting of a charger. Rev. 1.1 9/13 FORTUNE' Properties For Reference Only
- Timing Diagram 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 Rev. 1.1 10/13 FORTUNE' Properties For Reference Only
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 Rev. 1.1 11/13 FORTUNE' Properties For Reference Only
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 Rev. 1.1 12/13 FORTUNE' Properties For Reference Only
Rev. 1.1 13/13 14. Package Outline Dimension e b D E A A1 L1 L θ GAUGE PLANE SEATING PLANE DETAIL A c DETAIL A SYMBOL MIN. TYP. MAX. A b c D E L e θ 0 - 8 1.050 - 1.250 0.000 - 0.100 1.050 - 1.150 0.300 - 0.400 0.100 - 0.200 1.800 - 2.000 0.700REF
0.950 TYP
Unit : mm 2.820 - 3.020 1.500 - 1.700 2.650 - 2.950 0.300 - 0.600 0.2 15. Revision History Version Date Page Description 1.0 2010/04/14 ALL New release 1.1 2014/01/09 4 Revise VOI1 Specified Unit FORTUNE' Properties For Reference Only