MIC2005/2015 Fixed Current Limit Power Distribution Switch General Description Features MIC2005/2015 is a current limiting, high-side power switch, designed for general purpose power distribution and control in digital televisions (DTV), printers, set top boxes (STB), PCs, PDAs, and other peripheral devices. MIC2005/2015 primary functions are current limiting and power switching. It is thermally protected and will shutdown should its internal temperature reach unsafe levels, protecting both the device and the load, under high current or fault conditions. Features include fault reporting, with fault blanking to eliminate noise-induced false alarms, output slew rate limiting, under voltage detection, automatic-on output, and enable pin with choice of either active low or active high enable. The FET is self-contained, with the current limit value being factory set to one of several convenient levels. MIC2015 offers a unique new patented feature: KickstartTM, which allows momentary high current surges to pass unrestricted without sacrificing overall system safety. MIC2005/2015 is an excellent choice for USB and IEEE 1394 (FireWire) applications or for any system where current limiting and power control are desired. The MIC2005/2015 is offered in space saving 5-pin SOT-23, 6-pin SOT-23, and 2mm x 2mm MLF packages. Data sheets and support documentation can be found on Micrel's web site at www.micrel.com. * * * * * * * * * 70m typical on-resistance Enable active high or active low 2.5V - 5.5V operating range Pre-set current limit values of 0.5 A, 0.8 A, and 1.2 A Automatic-on output after fault Thermal Protection Under voltage lock-out (UVLO) Low quiescent current UL Certified Applications * * * * * * * * * * Digital televisions (DTV) Set top boxes PDAs Printers USB / IEEE 1394 Power Distribution Desktop and Laptop PCs Game consoles Docking stations Chargers UL Certification Required _________________________________________________________________________________________________________ Typical Application MIC2005/2015 Figure 1. Typical Application Circuit KickstartTM is a trademark of Micrel, Inc MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc. Protected by U.S. Patent No. 7,170,732 UL Certification No. E179633 Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com January 2008 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 MIC2005/2015 Pin Functions Part Number Pin Function 2003 2013 -- -- -- -- -- Load Discharge -- 2004 2014 -- -- -- -- -- -- -- -- Normal Limiting Kickstart I Limit 4 I Adj. Enable CSLEW FAULT/ DLM 3 1 2015 -- 2 2005 X -- 2006 2016 -- -- -- 2007 2017 -- -- 2008 2018 -- -- -- 2009 2019 -- -- -- 2005 Notes: 1. 2. 3. 4. Fixed Adj. CSLEW available on 5-Pin SOT-23-5 CSLEW not available on 5-Pin SOT-23-5 Dynamic Load Management Adj = Adjustable current limit Fixed = Factory programmed current limit Ordering Information Part Number Marking 2 Current Limit MIC2005-0.5YM5 F05F 0.5 A MIC2005-0.8YM5 F08F 0.8 A MIC2005-1.2YM5 F12F 1.2 A MIC2005-0.5YM6 FF05 0.5 A MIC2005-0.8YM6 FF08 0.8 A MIC2005-1.2YM6 FF12 1.2 A MIC2005-0.5YML E05 0.5 A MIC2005-0.8YML E08 0.8 A MIC2005-1.2YML E12 1.2 A MIC2015-0.5YM6 FN05 0.5 A MIC2015-0.8YM6 FN08 0.8 A MIC2015-1.2YM6 FN12 1.2 A MIC2015-0.5YML N05 0.5 A MIC2015-0.8YML N09 0.8 A MIC2015-1.2YML N12 1.2 A Notes: Kickstart Package SOT-23-5 No SOT-23-6 2 mmX2 mm MLF SOT-23-6 Yes 2 mmX2 mm MLF 1. All MIC2005/2015 parts are lead free. 2. Under-bar symbol ( _ ) may not be to scale January 2008 2 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Pin Configuration 6 VIN VOUT 1 PAD ON BACKSIDE IS GROUND NIC 2 NIC 3 5 GND 4 ENABLE 6-Lead 2 mm X 2 mm MLF (ML) Top View SOT 23-6 (M6) Top View SOT 23-5 (M5) Top View Pin Description Pin Number SOT-23 5-Pin 6-Pin MLF Pin Name Type Description Supply input. This pin provides power to both the output switch and the MIC2005/2015's internal control circuitry. 1 1 6 VIN Input 2 2 5 GND -- 3 3 4 ENABLE Input 4 4 3 FAULT/ Output 5 2 CLSEW Input Slew rate control. Adding a small value capacitor between this pin and VIN slows turn-ON of the power FET. 6 1 VOUT Output Switch output. The load being driven by MIC2005/2015 is connected to this pin. 6 January 2008 Ground. Switch Enable (Input): Active-high (-1) or active-low (-2) Fault status. A logic LOW on this pin indicates the MIC2005/2015 is in current limiting, or has been shut down by the thermal protection circuit. This is an `Open Drain' output allowing logical OR'ing of multiple MIC2005/2015s. 3 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Absolute Maximum Ratings(1) Operating Ratings(2) VIN, VOUT ............................................................ -0.3 to 6V All other pins .................................................. -0.3 to 5.5V Power Dissipation.................................. Internally Limited Continuous Output Current..................................... 2.25A Maximum Junction Temperature ........................... 150C Storage Temperature .............................. -65C to 150C Supply Voltage............................................. 2.5V to 5.5V Continuous Output Current Range .................... 0 to 2.1A Ambient Temperature Range .................... -40C to 85C Package Thermal Resistance (JA) SOT-23-5/6 .......................................... MLF 2x2 mm............................................ MLF 2x2 mm JC (5) .................................. 230C/W 90C/W 45C/W Electrical Characteristics VIN = 5V, TAMBIENT = 25C unless specified otherwise. Bold indicates -40C to +85C limits. Symbol Parameter Conditions Min VIN Switch Input Voltage IIN Internal Supply Current IIN Internal Supply Current ILEAK Output Leakage Current VIN = 5V, VOUT = 0 V, ENABLE =0 RDS(ON) Power Switch Resistance VIN = 5V, IOUT = 100 mA ILIMIT Current Limit: -0.5 VOUT = 0.8VIN to VOUT = 1V 0.5 ILIMIT Current Limit: -0.8 VOUT = 0.8VIN to VOUT = 1V ILIMIT Current Limit: -1.2 VOUT = 0.8VIN, to VOUT = 1V ILIMIT_2nd Secondary current limit (Kickstart) Typ Max Units 5.5 V 1 5 A 80 300 A 12 100 A 70 100 m 125 m 0.7 0.9 A 0.8 1.1 1.5 A 1.2 1.6 2.1 A MIC2015, VIN = 2.7V 2.2 4 6 A VIN Rising 2.0 2.25 25 V VIN Falling 1.9 2.15 2.4 V 0.5 V 2.5 Switch = OFF, ENABLE = 0V Switch = ON, IOUT = 0 ENABLE = 1.5V D Under Voltage Lock Out Threshold VEN ENABLE Input Voltage IEN ENABLE Input Current VEN = 0V to 5.0V 1 5 A VFAULT Fault status Output Voltage IOL = 10mA 0.25 0.4 V OTTHRESHOLD Over-temperature Threshold TJ increasing 145 TJ decreasing 135 UVLOTHRESHOL January 2008 VIL(max.) VIH(min) 4 1.5 V C M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 AC Characteristics Symbol Parameter tRISE Output Turn-ON rise time Condition Min Typ Max Units 500 1000 1500 s 20 32 49 ms 77 128 192 ms 77 128 192 ms 77 128 192 ms 1000 1500 s 700 s Max Units tD_LIMIT Delay before current limiting RL = 10, CLOAD = 1F, VOUT = 10% to 90% Time from current limiting to FAULT/ state change. MIC2005 Time from IOUT continuously exceeding primary current limit condition to FAULT/ state change. MIC2015 MIC2015 tRESET Delay before resetting Kickstart current limit delay, tLIMIT Out of current limit following a current limit. MIC2015 tON_DLY Output Turn-ON Delay RL = 43, CL = 120F, VEN = 50% to VOUT = 90% tOFF_DLY Output Turn-OFF Delay RL = 43, CL = 120F, VEN = 50% to VOUT = 90% Symbol Parameter Condition Min VESD_HB Electro Static Discharge Voltage: Human Body Model VOUT and GND 4 2 kV 200 V tD_FAULT Delay before asserting or releasing FAULT/ ESD ESD_MCHN Electro Static Discharge Voltage; Machine Model All other pins All pins Typ kV Machine Model Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 4. Specification for packaged product only. 5. Requires proper thermal mounting to achieve this performance. January 2008 5 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Timing Diagrams ENABLE 50% 50% tON_DLY tOFF_DLY 90% VOUT 10% Switching Delay Times tFALL tRISE 90% 90% 10% 10% Rise and Fall Times tRISE 90% VOUT 10% Output Rise Time January 2008 6 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Typical Characteristics Supply Current Output Enabled 1.00 0.90 25C 85C 60 40 20 I 4 VIN (V) 5 6 V = 2.5V ILIMIT (A) VIN = 3V 1.50 1.45 IN 1.40 Please note that the 3 90 RON vs. Temperature Temperature 100 0.5A 1.2A 0 -50 -30 -10 10 30 50 70 TEMPERATURE (C) 120 100 80 0.8A 60 40 20 0.2 0 2 90 2.3 THRESHOLD (V) 3.3V 90 2.5V 80 60 5V 40 20 2.5 3 3.5 4 4.5 VIN (V) 5 5.5 0 -50 -30 -10 10 30 50 70 TEMPERATURE (C) 90 UVLO Threshold vs. Temperature 2.25 V RISING 2.2 V FALLING 2.15 2.1 2.05 -50 January 2008 5V 0.59 3V 0.57 2.5V 0.55 -50 -30 -10 10 30 50 70 TEMPERATURE (C) RON vs. RON (mOhm) ILIMIT (A) 0.20 0.65 0.63 0.61 Supply Voltage 0.6 0.4 Note: 3V 0.71 0.69 0.67 ILIMIT vs. 1.0 0.8 5V 2.5V plots overlay each 0.00 -50 -30 -10 10 30 50 70 TEMPERATURE (C) 90 (MIC20xx - 0.5) 0.75 0.73 0.40 90 ILIMIT vs. Temperature (MIC20xx - 0.8) 0.60 1.30 1.25 -50 -30 -10 10 30 50 70 TEMPERATURE (C) 0.40 0.30 0.20 0.10 0 -50 -30 -10 10 30 50 70 TEMPERATURE (C) 7 0.80 1.35 1.2 6 1.00 V = 5V 1.4 4 5 VIN (V) 1.20 IN 1.55 3 1.40 ILIMIT (A) 1.60 85C 25C 0.80 0.70 0.60 0.50 ILIMIT vs. Temperature vs. Temperature (MIC20xx-1.2) LIMIT 1.65 -40C ILIMIT (A) 3 0.10 0 2 1.00 0.90 RON (mOhm) 0 2 0.80 0.70 0.60 0.50 0.40 0.30 0.20 Switch Leakage Current - OFF (A) -40C 80 SUPPLY CURRENT (A) SUPPLY CURRENT (A) 100 Supply Current Output Disabled 0 50 100 TEMPERATURE (C) 7 150 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Functional Characteristics January 2008 8 M9999-011708-A (408) 944-0800 Micrel January 2008 MIC2005/2015 9 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Functional Diagram Under Voltage Detector VIN Current Mirror FE T Control Logic and Delay T imer Power FET Gate Control VOUT Thermal Sensor Slew Rate Control VREF Current L imit control Loop GND Factory adjusted Figure 2 MIC2005/2015 Block Diagram January 2008 10 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 duration of the Kickstart period. After this time the MIC2015 reverts to its normal current limit. An example of Kickstart operation is shown below. Functional Description VIN and VOUT VIN is both the power supply connection for the internal circuitry driving the switch and the input (Source connection) of the power MOSFET switch. VOUT is the Drain connection of the power MOSFET and supplies power to the load. In a typical circuit, current flows from VIN to VOUT toward the load. Since the switch is bidirectional when enabled, if VOUT is greater than VIN, current will flow from VOUT to VIN. When the switch is disabled, current will not flow to the load, except for a small unavoidable leakage current of a few microamps. However, should VOUT exceed VIN by more than a diode drop (~0.6V), while the switch is disabled, current will flow from output to input via the power MOSFET's body diode. This effect can be used to advantage when large bypass capacitors are placed on MIC2005/2015's output. When power to the switch is removed, the output capacitor will be automatically discharged. If discharging CLOAD is required by your application, consider using MIC2005/2015 or MIC2007/2017 in place of MIC2005/2015. These MIC2000 family members are equipped with a discharge FET to insure complete discharge of CLOAD. OUT OUT Figure 3. Kickstart Operation Picture Key: A) MIC2015 is enabled into an excessive load (slew rate limiting not visible at this time scale) The initial current surge is limited by either the overall circuit resistance and power supply compliance, or the secondary current limit, whichever is less. B) RON of the power FET increases due to internal heating (effect exaggerated for emphasis). C) Kickstart period. D) Current limiting initiated. FAULT/ goes LOW. E) VOUT is non-zero (load is heavy, but not a dead short where VOUT = 0. Limiting response will be the same for dead shorts). F) Thermal shutdown followed by thermal cycling. G) Excessive load released, normal load remains. MIC2015 drops out of current limiting. H) FAULT/ delay period followed by FAULT/ going HIGH. Current Sensing and Limiting MIC2005/2015 protects the system power supply and load from damage by continuously monitoring current through the on-chip power MOSFET. Load current is monitored by means of a current mirror in parallel with the power MOSFET switch. Current limiting is invoked when the load exceeds an internally set over-current threshold. When current limiting is activated the output current is constrained to the limit value, and remains at this level until either the load/fault is removed, the load's current requirement drops below the limiting value, or the MIC2005/2015 goes into thermal shutdown. Kickstart (MIC2015 only) The MIC2015 is designed to allow momentary current surges (Kickstart) before the onset of current limiting, which permits dynamic loads, such as small disk drives or portable printers to draw the energy needed to overcome inertial loads without sacrificing system safety. In this respect, the MIC2015 differs markedly from MIC2005 and its peers, which immediately limit load current, potentially starving the motor and causing the appliance to stall or stutter. During this delay period, typically 128 ms, a secondary current limit is in effect. If the load demands a current in excess the secondary limit, MIC2015 acts immediately to restrict output current to the secondary limit for the January 2008 Under Voltage Lock Out Under voltage lock-out insures no anomalous operation occurs before the device's minimum input voltage of 2.5V had been achieved. Prior to reaching this voltage, the output switch (power MOSFET) is OFF and no circuit functions, such as FAULT/ or ENABLE, are considered to be valid or operative. 11 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Slew Rate Control (Not present with SOT23-5 (M5)) Large capacitive loads can create significant current surges when charged through a high-side switch such as the MIC2005/2015. For this reason, MIC2005/2015 provides built-in slew rate control to limit the initial inrush currents upon enabling the power MOSFET switch. Slew rate control is active upon powering up, and upon re-enabling the load. At shutdown, the discharge slew rate is controlled by the external load and output capacitor. ENABLE ENABLE is a HIGH or LOW true control signal, which activates the main MOSFET switch. ENABLE has two voltage ranges depending on whether the switch is an active high or active low device.. ENABLE can be wireOR'd with other MIC2005/2015s or similar devices without damage to the device. ENABLE may be driven higher than VIN, but no higher than 5.5V. FAULT/ FAULT/ is an N-channel `open drain' output, which is asserted (LOW true) when MIC2005/2015's either begins current limiting or enters thermal shutdown. In MIC2005/2015, FAULT/ asserts after a brief delay period, usually 32 ms. This delay ensures that FAULT/ is asserted only upon valid, enduring, over-current conditions and that transitory event error reports are filtered out. After a fault clears, FAULT/ remains asserted for the delay period; 32ms for the MIC2005/2015. Because FAULT/ is an `open drain' it must be pulled HIGH with an external resistor output and it may be wire-OR'd with other similar outputs, sharing a single pull-up resistor. FAULT/ may be tied to a pull-up voltage source which is higher than VIN, but no greater than 5.5V. January 2008 Thermal Shutdown Thermal shutdown is employed to protect MIC2005/2015 from damage should the die temperature exceed safe operating levels. Thermal shutdown shuts off the output MOSFET if the die temperature reaches 145C. MIC2005/2015 will automatically resume operation when the die temperature cools down to 135C. If resumed operation results in reheating of the die, another shutdown cycle will occur and the MIC2005/2015 will continue cycling between ON and OFF states until the offending load has been removed. Depending on PCB layout, package type, ambient temperature, etc., hundreds of milliseconds may elapse from the incidence of a fault to the output MOSFET being shut off. This delay is due to thermal time constants within the system itself. In no event will the device be damaged due to thermal overload because die temperature is monitored continuously by on-chip circuitry. 12 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Application Information ILIMIT vs. IOUT measured MIC2005/2015's current limiting circuitry is designed to act as a constant current source to the load. As the load tries to pull more than the allotted current, VOUT drops and the input to output voltage differential increases. When VIN -VOUT exceeds 1V, IOUT drops below ILIMIT to reduce the drain of fault current on the system's power supply and to limit internal heating of MIC2005/2015. When measuring IOUT it is important to bear this voltage dependence in mind, otherwise the measurement data may appear to indicate a problem when none really exists. This voltage dependence is illustrated in Figures 4 and 5. In Figure 4 output current is measured as VOUT is pulled below VIN, with the test terminating when VOUT is 1V below VIN. Observe that once ILIMIT is reached IOUT remains constant throughout the remainder of the test. In Figure 5 this test is repeated but with VIN - VOUT exceeding 1V. When VIN - VOUT > 1V, MIC2005/2015's current limiting circuitry responds by decreasing IOUT, as can be seen in Figure 5. In this demonstration, VOUT is being controlled and IOUT is the measured quantity. In real life applications VOUT is determined in accordance with Ohm's law by the load and the limiting current. Figure 5. IOUT in Current Limiting for VOUT >1V NORMALIZED OUTPUT CURRENT (A) This folding back of ILIMIT can be generalized by plotting ILIMIT as a function of VOUT, as shown below. The slope of VOUT between IOUT = 0 and IOUT = ILIMIT (where ILIMIT = 1) is determined by RON of MIC2005/2015 and ILIMIT. 1.2 Normalized Output Current vs. Output Voltage (5V) 1.0 0.8 0.6 0.4 0.2 0 0 1 2 3 4 5 OUTPUT VOLTAGE (V) 6 Figure 6. Figure 4. IOUT in Current Limiting for VOUT 1V January 2008 13 M9999-011708-A (408) 944-0800 MIC2005/2015 NORMALIZED OUTPUT CURRENT (A) Micrel 1.2 short circuit fault. For this reason, the upper limit on the value of CSLEW is 4nF. Normalized Output Current vs. Output Voltage (2.5V) Kickstart (MIC2015) Kickstart allows brief current surges to pass to the load before the onset of normal current limiting, which permits dynamic loads to draw bursts of energy without sacrificing system safety. Functionally, Kickstart is a forced override of the normal current limiting function provided by MIC2015. The Kickstart period is governed by an internal timer which allows current to pass unimpeded to the load for 128ms and then normal (primary) current limiting goes into action. During Kickstart a secondary current limiting circuit is monitoring output current to prevent damage to the MIC2015, as a hard short combined with a robust power supply can result in currents of many tens of amperes. This secondary current limit is nominally set at 4 Amps and reacts immediately and independently of the Kickstart period. Once the Kickstart timer has finished its count the primary current limiting circuit takes over and holds IOUT to its programmed limit for as long as the excessive load persists. Once MIC2015 drops out of current limiting the Kickstart timer initiates a lock-out period of 128ms such that no further bursts of current above the primary current limit, will be allowed until the lock-out period has expired. Kickstart may be over-ridden by the thermal protection circuit and if sufficient internal heating occurs, Kickstart will be terminated and IOUT AE 0. Upon cooling, if the load is still present IOUT AE ILIMIT, not IKICKSTART. 1.0 0.8 0.6 0.4 0.2 0 0 0.5 1.0 1.5 2.0 2.5 OUTPUT VOLTAGE (V) 3.0 Figure 7. CSLEW (Not present with SOT23-5 (M5)) The CSLEW input is provided to increase control of the output voltage ramp at turn-on. This input allows designers the option of decreasing the output's slew rate (slowing the voltage rise) by adding an external capacitance between the pin, CSLEW, and VIN. This capacitance slows the rate at which the pass FET gate voltage increases and thus, slows both the response to an Enable command as well as VOUT's ascent to its final value. Figure 8 illustrates effect of CSLEW on turn-ON delay and output rise time. Figure 8 CSLEW's effect on ILIMIT An unavoidable consequence of adding CSLEW capacitance is a reduction in the MIC2005/2015's ability to quickly limit current transients or surges. A sufficiently large capacitance can prevent both the primary and secondary current limits from acting in time to prevent damage to the MIC2005/2015 or the system from a January 2008 Figure 9. Kickstart 14 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 plots also assume a worst case RON of 140 m at a die temperature of 135C. Under these conditions it is clear that an SOT-23 packaged device will be on the verge of thermal shutdown, typically 140C die temperature, when operating at a load current of 1.25A. For this reason we recommend using MLF packaged MIC2005/2015s for any design intending to supply continuous currents of 1A or more. Supply Filtering A 0.1F to 1F bypass capacitor positioned close to the VIN and GND pins of MIC2005/2015 is both good design practice and required for proper operation of MIC2005/2015. This will control supply transients and ringing. Without a bypass capacitor, large current surges or an output short may cause sufficient ringing on VIN (from supply lead inductance) to cause erratic operation of MIC2005/2015's control circuitry. Good quality, low ESR capacitors, such as Panasonic's TE or ECJ series, are suggested. When bypassing with capacitors of 10F and up, it is good practice to place a smaller value capacitor in parallel with the larger to handle the high frequency components of any line transients. Values in the range of 0.01F to 0.1F are recommended. Again, good quality, low ESR capacitors should be chosen. Die Temperature vs. Iout for Tcase = 85C 160 Die Temperature - C 140 Power Dissipation Power dissipation depends on several factors such as the load, PCB layout, ambient temperature, and supply voltage. Calculation of power dissipation can be accomplished by the following equation: 100 80 60 40 SOT-23 20 MLF 0 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 PD = R DS(ON) x (IOUT ) 2 Iout - Amps Figure 10. Die Temperature vs. IOUT To relate this to junction temperature, the following equation can be used: Figure 10 assumes no backside contact is made to the thermal pad provided on the MLF package. For optimal performance at higher current levels, or in higher temperature environments, thermal contact with the PCB and the exposed power paddle on the back side of the MLF package should be made. This significantly reduces the package's thermal resistance thereby extending the MIC2005/2015's operating range. It should be noted that this backside paddle is electrically active and is connected to the MIC2005/2015's GND pin. TJ = PD x R (J- A) + TA Where: TJ = junction temperature, TA = ambient temperature R(J-A) is the thermal resistance of the package In normal operation MIC2005/2015's Ron is low enough that no significant I2R heating occurs. Device heating is most often caused by a short circuit, or very heavy load, when a significant portion of the input supply voltage appears across MIC2005/2015's power MOSFET. Under these conditions the heat generated will exceed the package and PCB's ability to cool the device and thermal limiting will be invoked. In Figure 10 die temperature is plotted against IOUT assuming a constant case temperature of 85C. The January 2008 120 15 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Package Information 2 Vias 0.3 mm diam. to Ground Plane 1.4 mm 0.8 mm Figure 11. Pad for thermal mounting to PCB 6-Pin SOT-23 (M6) January 2008 16 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 Package Information (Cont.) 1.90 (0.075) REF 0.95 (0.037) REF 1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102) DIMENSIONS: MM (INCH) 1.30 (0.051) 0.90 (0.035) 3.02 (0.119) 2.80 (0.110) 10 0 0.50 (0.020) 0.35 (0.014) 0.15 (0.006) 0.00 (0.000) 0.20 (0.008 ) 0.09 (0.004 ) 0.60 (0.024) 0.10 (0.004) 5-Pin SOT-23 (M5) 6 Pin 2mm x 2mm MLF (ML) January 2008 17 M9999-011708-A (408) 944-0800 Micrel MIC2005/2015 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2004 Micrel, Incorporated. January 2008 18 M9999-011708-A (408) 944-0800