MAS9011 MAS | Alldatasheet

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Technical content

DA9011.001

28 Jan 2004

1 (9) MAS9011 Solar Cell System Manager

  • Power On Indicator
  • Low Battery Indicator
  • Battery Overcharging Protection

DESCRIPTION

The solar cell system manager is an analog circuit, which monitors the supply voltage of a battery- powered system containing solar cells. The solar manager uses three output signals to indicate the state of the system. Po wer On (PO) indicates whether the supply voltage is high enough to run the system. Low Battery (LB) is used to signal the situation where the battery is low. The third signal, SOL, is used for battery charging control. It indicates when the battery is full and the charging process should be stopped. FEATURES APPLICATIONS

  • Power On Indicator
  • Low Battery Indicator
  • Battery Overcharging Protection
  • Solar Cell Powered Watch BLOCK DIAGRAM LB PO VDD SOL GNDMAS9011 This is preliminary information on a new product under development. Micro Analog Systems Oy reserves the right to make any changes without notice.

DA9011.001 2 (9) PAD LAYOUT 670 µm 1434 µm MAS 9011 GND VDD SOL PO LB DIE size = 0.67 mm x 1.43 mm PAD size = 80 x 80 µm Note: Make sure that VDD is the first pad to be bonded. Pick-and-place and all component assembly are recommended to be performed in ESD protected area. Note: If the die is to be placed on metal plane, the metal plane should be connected to VDD or left floating. This because the substrate of the die is internally connected to VDD. Note: Coordinates are pad center points where origin has been located in bottom-left corner of the silicon die. Pad Identification Name X-coordinate Y-coordinate Power Supply Ground GND 174 µm 1208 µm Power Supply Voltage VDD 334 µm 1210 µm Full Battery Output SOL 495 µm 1221 µm Power On Output PO 211 µm 221 µm Low Battery Output LB 462 µm 221 µm

DA9011.001 3 (9) FUNCTIONAL DESCRIPTION The solar manager generates three signals: PO (Power On), LB (Low Battery) and SOL (Full Battery). These signals are produced by three comparators which have hysteresis build in. Each comparator compares supply voltage (VDD) to internal switching levels (see Electrical Characteristics on next page). The current consumption of the comparators is very low. The electrical parameters are described more detailed in the Electrical Characteristics chapter. PO signal can be used to stop the whole system whenever the power supply level has dropped low enough. When power supply voltage is too low, the PO goes high to give signal to watch microcontroller to go power down. LB signal indicates that t he battery is low but not empty. LB goes high when power supply level is too low. SOL is used for battery charging control of the solar watch. When power supply voltage goes high enough, the internal PMOS switch between VDD and SOL pins is switched on to shunt the solar cell charging current and to prevent battery overcharging. In operation without an external Schottky diode between the pins SOL and GND, the voltage at pin SOL is clamped to about 700 mV below GND by a diode-connected PNP transistor. MAS9011 does not have any c ontrol pin. After the power supply is connected the device is ready to be used.

DA9011.001 4 (9) ABSOLUTE MAXIMUM RATINGS All voltages with respect to ground. Parameter Symbol Conditions Min Max Unit Supply Voltage VDD -0.3 6.0 V Voltage range for all pins -0.3 VDD+0.3 V Operating temperature T A -40 +85 oC Storage Temperature T S -50 +125 oC

ELECTRICAL CHARACTERISTICS

TA = -40°C to +85°C, typical values at TA = +27°C, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Supply voltage VDD 1.00 3.00 V Current consumption I Q 100 300 nA PO switching level V PO Switching On Switching Off 1.15 1.10 V PO hysteresis V PO(H) 50 mV PO output voltage V PO(OUT) VDD = 1.05 V, IPO = -1.0 mA 0.06 V LB switching level V LB Switching On Switching Off 1.19 1.22 V LB hysteresis V LB(H) 30 mV LB output voltage V LB(OUT) VDD = 1.15 V, ILB = 50 µA VDD = 1.30 V, ILB = -50 µA 0.95 0.20 V SOL switching level V SOL Switching On Switching Off 1.55 1.48 V SOL hysteresis V SOL(H) 70 mV SOL output current I SOL VDD = 1.4 V, VSOL = 0 V TBD nA SOL leakage current VDD = 1.7 V -50 +50 nA LB on level – PO off level 90 mV

Figure 1. Typical application circuit of MAS9011

DA9011.001 6 (9) MAS9011 SAMPLES IN SBDIL 20 PACKAGE VDD 1 GND 2 NC 3 NC 4 NC 5 NC 6 NC 7 NC 8 NC 9 NC 10

20 SOL

XXXXX.X Top Marking Definitions: YYWW = Year Week XXXXX.X = Lot Number v = Sample Version Number SBDIL 20 PIN DESCRIPTION Pin Name Pin Type Function VDD 1 P Positive Power Supply GND 2 G Power Supply Ground NC 3, 4, 5, 6, 7, 8, 9, 10 PO 11 DO Power On Output LB 12 DO Low Battery Output NC 13, 14, 15, 16, 17, 18, SOL 20 AO Full Battery Output NC = Not Connected, P = Power, G = Ground, DO = Digital Output, AO = Analog Output MAS9011 IN TSOT-5 PACKAGE 3 21 SOL GND LB VDD PO XXXX Bottom Marking Definitions: ZXXXX.Y = Lot Number (Example: Lot 12345.1 marking 2345) 1 2 3 SOL GND LBVDD PO 11A1 Top View Bottom View TSOT-5 PIN DESCRIPTION Pin Name Pin Type Function SOL 1 AO Full Battery Output VDD 2 P Positive Power Supply LB 3 DO Low Battery Output PO 4 DO Power On Output GND 5 G Power Supply Ground NC = Not Connected, P = Power, G = Ground, DO = Digital Output, AO = Analog Output

DA9011.001 7 (9) PACKAGE (TSOT-5) OUTLINE Symbol Min Nom Max Unit A -- -- 1.00 mm A1 0.01 0.05 0.10 mm A2 0.84 0.87 0.90 mm b 0.30 -- 0.45 mm c 0.12 0.127 0.20 mm D 2.90BSC mm E 2.80BSC mm E1 1.60BSC mm e 0.95BSC mm e1 1.90BSC mm L 0.30 0.40 0.50 mm L2 0.25BSC mm Q 4° 10° 12° GAUGE PLANE A CL CL CL L be CL E D c 1) PACKAGE OUTLINE DIMENSIONS INCLUSIVE OF METAL BURR & SOLDER PLATING 2) PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH 3) ALL SPECIFICATIONS COMPLY TO JEDEC MO193 4) Q REFERS TO ALL PACKAGE DRAFT ANGLES

DA9011.001 8 (9) SOLDERING INFORMATION ◆ For Lead-Free TSOT-5 Resistance to Soldering Heat Acco rding to RSH test IEC 68-2-58/20 Maximum Temperature 260°C Maximum Number of Reflow Cycles 3 Reflow profile Thermal profile param eters stated in JESD22-A113 should not be exceeded. http://www.jedec.org Seating Plane Co-planarity max 0.08 mm Lead Finish Solder plate 7.62 - 25.4 µm, material Matte Tin TAPE & REEL SPECIFICATIONS (TSOT-5) Other Dimensions according to EIA-481 Standard

3000 Components on Each Reel

B 1.5 mm C 12.80 13.50 mm D 20.2 mm N 50 mm W1 (measured at hub) 8.4 9.9 mm W2 (measured at hub) 14.4 mm W3 (includes flange distortion at outer edge) 7.9 10.9 mm Trailer 160 mm Leader 390, of which minimum 160 mm of empty carrier tape sealed with cover tape mm A B D C N Feeding Direction 8 mm 4 mm

DA9011.001 9 (9)

ORDERING INFORMATION

Product Code Product Package Comments MAS9011A1TC05 Solar Cell System Manager Bare die, thickness 400 µm Die Tray MAS9011A1GB0 Solar Cell System Manager TSOT-5 lead-free Tape and Reel MAS9011A1BD08 Solar Cell System Manager SBDIL 20 Samples In Tube LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O. Box 51 FIN-02771 Espoo, FINLAND Tel. +358 9 80 521 Fax +358 9 805 3213 http://www.mas-oy.com