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ALD810019SCL Datasheet(PDF) 1 Page - Advanced Linear Devices |
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ALD810019SCL Datasheet(HTML) 1 Page - Advanced Linear Devices |
1 / 6 page ©2014 Advanced Linear Devices, Inc., Vers. 2.0 www.aldinc.com 1 of 6 e EPAD TM ® N A B L E D E ADVANCED LINEAR DEVICES, INC. GENERAL DESCRIPTION The ALD810019/ALD910019 are members of the ALD8100xx (quad) and ALD9100xx (dual) family of Supercapacitor Auto Bal- ancing MOSFETs, or SAB™ MOSFETs. SAB MOSFETs are built with production proven EPAD ® technology and are designed to ad- dress voltage and leakage-current balancing of supercapacitors connected in series. Supercapacitors, also known as ultracapacitors or supercaps, connected in series can be leakage-current balanced by using a combination of one or more devices connected across each supercapacitor stack to prevent over-voltages. The ALD810019 offers a set of unique, precise operating voltage and current characteristics for each of four SAB MOSFET devices, as shown in its Operating Electrical Characteristics table. It can be used to balance up to four supercapacitors connected in series. The ALD910019 has its own set of unique precision Operating Elec- trical Characteristics for each of its two SAB MOSFET devices, suitable for up to two series-connected supercapacitors. Each SAB MOSFET features a precision gate threshold voltage in the Vt mode, which is 1.90V when the gate-drain source terminals (VGS = VDS) are connected together at a drain-source current of IDS(ON) = 1µA. In this mode, input voltage VIN = VGS = VDS. Dif- ferent VIN produces an Output Current IOUT = IDS(ON) character- istic and results in an effective variable resistor that varies in value exponentially with VIN. This VIN, when connected across each supercapacitor in a series, balances each supercapacitor to within its voltage and current limits. When VIN = 1.90V is applied to an ALD810019/ALD910019, its IOUT is 1µA. For a 100mV increase in VIN, to 2.00V, IOUT increases by about tenfold. For an additional increase in VIN to 2.12V for the ALD910019 (2.14V for the ALD810019), IOUT increases one hun- dredfold, to 100µA. Conversely, for a 100mV decrease in VIN to 1.80V, IOUT decreases to one tenth of its previous value, to 0.1µA. Another 100mV decrease in input voltage would reduce IOUT to 0.01µA. Hence, when an ALD810019/ALD910019 SAB MOSFET is connected across a supercapacitor that charges to less than 1.70V, it would dissipate essentially no power. (Continued on next page) QUAD/DUAL SUPERCAPACITOR AUTO BALANCING (SAB™) MOSFET ARRAY ALD810019/ALD910019 FEATURES & BENEFITS • Simple and economical to use • Precision factory trimmed • Automatically regulates and balances leakage currents • Effective for supercapacitor charge-balancing • Balances up to 4 supercaps with a single IC package • Balances 2-cell, 3-cell, 4-cell series-connected supercaps • Scalable to larger supercap stacks and arrays • Near zero additional leakage currents • Zero leakage at 0.3V below rated voltages • Balances series and/or parallel-connected supercaps • Leakage currents are exponential function of cell voltages • Active current ranges from <0.3nA to >1000µA • Always active, always fast response time • Minimizes leakage currents and power dissipation *IC pins are internally connected, connect to V- PIN CONFIGURATIONS SAL PACKAGE ALD910019 V- GN1 DN1 SN1 1 2 3 4 IC* GN2 DN2 SN2, V- V+ 6 7 8 5 SCL PACKAGE ALD810019 DN1 GN1 IC* DN4 SN4 GN4 SN1 V- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DN2 GN2 IC* DN3 SN3 GN3 SN2 V+ V- V- M2 M1 M4 M3 V- V- APPLICATIONS • Series-connected supercapacitor cell leakage balancing • Energy harvesting • Long term backup battery with supercapacitor outputs • Zero-power voltage divider at selected voltages • Matched current mirrors and current sources • Zero-power mode maximum voltage limiter • Scaled supercapacitor stacks and arrays PRODUCT FAMILY SPECIFICATIONS For more information on supercapacitor balancing, how SAB MOSFETs achieve automatic supercapacitor balancing, the device characteristics of the SAB MOSFET family, product family product selection guide, applications, configurations, and package infor- mation, please download from www.aldinc.com the document: “ALD8100xx/ALD9100xx Family of Supercapacitor Auto Balanc- ing (SAB™) MOSFET ARRAYs” ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS)) Operating Temperature Range Package 0°C to +70°C -40°C to +85°C (Commercial) (Industrial) 16-Pin SOIC ALD810019SCL ALD810019SCLI 8-Pin SOIC ALD910019SAL ALD910019SALI |
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