EM MICROELECTRONIC - MARIN SA R EM6153 5V Automotive Regulator with Inhibit Input and Windowed Watchdog Description Features The EM6153 offers a high level of integration by combining voltage regulation, voltage monitoring and software monitoring using a windowed watchdog. A comparator monitors the voltage applied at the VIN input comparing it with an internal voltage reference VREF. The power-on reset function is initialized after VIN reaches VREF and takes the reset output inactive after a delay TPOR depending on external resistance ROSC. The reset output goes active low when the VIN voltage is less than VREF. The RES and EN outputs are guaranteed to be in a correct state for a regulated output voltage as low as 1.2 V. The watchdog function monitors software cycle time and execution. If software clears the watchdog too quickly (incorrect cycle time) or too slowly (incorrect execution) it will cause the system to be reset. For enhanced security, the watchdog must be serviced within an “open” time window. During the remaining time, the watchdog time window is “closed” and a reset will occur should a TCL pulse be received by the watchdog during this “closed” time window. The ratio of the open/closed window is either 33%/67% or 67%/33%. The system ENABLE output prevents critical control functions being activated until software has successfully cleared the watchdog three times. Such a security could be used to prevent motor controls being energized on repeated resets of a faulty system. Low quiescent current 90 μA Very low OFF current consumption < 1uA -40°C to +125°C temperature range Highly accurate 5 V, 150 mA guaranteed output (actual maximum current depends on power dissipation) Low dropout voltage, typically 250 mV at 100 mA Unregulated DC input can withstand -42 V reverse battery and +45 V power transients Fully operational for unregulated DC input voltage up to 40 V and regulated output voltage down to 3.5 V No reverse output current Very low temperature coefficient for the regulated output Current limiting Windowed watchdog with an adjustable time windows, guaranteeing a minimum time and a maximum time between software clearing of the watchdog Time base accuracy ±8% (at 100ms) Sleep mode function (V55) Adjustable threshold voltage using external resistors Adjustable power on reset (POR) delay using one external resistor Open-drain active-low RESET output Reset output guaranteed for regulated output voltage down to 1.2 V System ENABLE output offers added security Qualified according to AEC-Q100 Green SO-16 Exposed pad package (RoHS compliant) When the microcontroller goes in stand-by mode or stops working, no signal is received on the TCL input and the EM6153 (version 55) goes into a stand-by mode in order to save power (CAN-bus sleep detector). In EM6153, the voltage regulator has a low dropout voltage and a low quiescent current of 75 μA. The quiescent current increases only slightly in dropout prolonging battery life. Builtin protection includes a positive transient absorber for up to 45 V (load dump) and the ability to survive an unregulated input voltage of -42 V (reverse battery). The input may be connected to ground or to a reverse voltage without reverse current flowing from the output to the input. Applications Typical Operating Configuration Selection Table Unregulated Voltage Inhibit 22uF + ROSC 5V OUTPUT VDD EM6153 INH + 100nF VDD R1 10uF VIN ROSC VSS TCL I/O RES RES I/O EN Microprocessor INPUT Automotive systems Industrial Home security systems Telecom / Networking Computers Set top boxes Closed Open Window Window CAN-bus sleep detector Part Number VREF EM6153V50 1.52 V 67% 33% EM6153V53 1.52 V 33% 67% NO EM6153V55 1.275 V 67% 33% YES NO Please refer to Fig. 4 for more information about the open/closed window of the watchdog. R2 GND Fig. 1 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 1 www.emmicroelectronic.com R EM6153 Ordering Information Part Number Version VREF Package Delivery Form V50 V53 V55 1.520 V 1.520 V 1.275 V ExPadSO-16 ExPadSO-16 ExPadSO-16 Tape & Reel, 2500pcs Tape & Reel, 2500pcs Tape & Reel, 2500pcs EM6153V50ES16B+ EM6153V53ES16B+ EM6153V55ES16B+ Package Marking EM6153 050 EM6153 053 EM6153 055 Note: the “+” symbol at the end of the part number means that this product is RoHS compliant (green). Pin Assignment and Description SO-16 Exposed Pad 2 Name 3 RES Open drain active low reset output. RES must be pulled up to VOUTPUT even if unused 5 TCL VSS Watchdog timer clear input signal 6 INPUT 8 12 INH OUTPUT Voltage regulator output 13 VDD Watchdog power supply 14 ROSC ROSC input for RC oscillator tuning 15 VIN Voltage comparator input 1, 7, 9, 10, 11, 16 NC No connect EN 4 Exposed Pad Function Push-pull active low enable output Ex. Pad SO-16 NC 1 16 NC EN 2 15 VIN RES 3 14 ROSC Voltage regulator input TCL 4 13 VDD Inhibit input VSS 5 12 INPUT 6 11 NC NC 7 10 NC INH 8 9 NC GND terminal EM6153 OUTPUT Connect to VSS or left floating Block Diagram EM6153 INPUT Voltage Regulator OUTPUT VDD Voltage Reference Voltage Reference VREF VIN ROSC Enable Logic EN Reset Control RES Comparator + Open drain output RES Current Controlled Oscillator Timer TCL Fig. 3 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 2 www.emmicroelectronic.com R EM6153 a low ESR value. Tantalum capacitors are recommended. See the notes related to Table 2. Special care must be taken in disturbed environments (automotive, proximity of motors and relays, etc.). Absolute Maximum Ratings Parameter Symbol Conditions Continuous voltage at INPUT and VINPUT -0.3 to +40V INH to VSS Transients on INPUT for VTRANS Up to +45V t < 100 ms and duty cycle 1% Max. voltage at any signal pin VMAX VOUTPUT + 0.3V Min. voltage at any signal pin VMIN VSS – 0.3V Reverse supply voltage on VREV -42V INPUT and INH Storage temperature TSTO -65 to +150 °C ESD According to MIL-STD-883 VSmax 2000V method 3015.7 Handling Procedures This device has built-in protection against high static voltages or electric fields; however, it is advised that normal precautions be taken as for any other CMOS component. Unless otherwise specified, proper operation can only occur when all terminal voltages are kept within the voltage range. At any time, all inputs must be tied to a defined logic voltage level. Operating Conditions Parameter Operating junction temperature INPUT voltage (note 1, 2) Table 1 Stresses above these listed maximum ratings may cause permanent damages to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction. The input capacitor is necessary to compensate the line influences. A resistor of approx. 1 Ω connected in series with the input capacitor may be used to damp the oscillation of the input capacitor and input inductance. The ESR value of the capacitor plays a major role regarding the efficiency of the decoupling. It is recommended also to connect a ceramic capacitor (100 nF) directly at the IC's pins. In general the user must assure that pulses on the input line have slew rates lower than 1 V/µs. On the output side, the capacitor is necessary for the stability of the regulation circuit. The stability is guaranteed for values of 10 µF or greater. It is especially important to choose a capacitor with Note 2: Note 3: Note 4: Note 5: Min. Max. Units Tj -40 +125 °C VINPUT 5.5 40 V RES and EN guaranteed VOUTPUT (note 3) OUTPUT current (note 4) IOUTPUT Comparator input voltage VIN RC-oscillator programming ROSC Package thermal resistance from junction to ambient : Exp. Pad SO-16 150 MILS Rth(j-a) (note 5) Decoupling Methods Note 1: Symbol 1.2 0 10 30 V 150 mA VOUTPUT V 1000 kΩ 90 °C/W Table 2 full operation guaranteed. To achieve the load regulation specified in Table 3 a 10 μF capacitor or greater is required on the INPUT, see Fig. 1b. The 10 μF must have an effective resistance ≤ 4 Ω and a resonant frequency above 500 kHz. a 10 μF load capacitor and a 100 nF decoupling capacitor are required on the regulator OUTPUT for stability. The 10 μF must have an effective series resistance of ≤ 4 Ω and a resonant frequency above 500 kHz. RES must be pulled up externally to VOUTPUT even if it is unused. ( RES and EN are used as inputs by EM test) the OUTPUT current will not apply to the full range of input voltage. Power dissipation that would require the EM6153 to work above the maximum junction temperature (+125°C) must be avoided. the thermal resistance specified assumes the package is soldered to a PCB. A typical value of 51°C/W has been obtained with a dual layer board, with the slug soldered to the heat-sink area of the PCB (See Figure 14) Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 3 www.emmicroelectronic.com R EM6153 Electrical Characteristics VINPUT = 13.5 V, CL = 10 μF + 100 nF, CINPUT = 22 μF, VINH = 5 V, VDD connected to VOUTPUT, Tj = -40 to +125°C, unless otherwise specified Parameter Supply current OFF mode Supply current in standby mode and sleep mode for V55 (note 1) Supply current (note1) Supply current Voltage regulator Output voltage Line regulation (note 2) Load regulation (note 2) Dropout voltage (note 3) Current limit Supervisory and watchdog RES & EN Output Low Voltage EN Output High Voltage TCL Input Low Level TCL Input High Level INH Input On Voltage INH Input Off Voltage INH current TCL Leakage current Comparator reference (note 4, 5) Symbol Test Conditions ROSC = don’t care, TCL = VOUTPUT, ISS VIN = 0 V, VINH = 0 V, Tj < 100°C ROSC = don’t care, TCL = VOUTPUT, ISS VIN = 0 V, IL = 100 μA ROSC = 100 kΩ, I/PS at VOUTPUT, ISS O/PS 1 MΩ to VOUTPUT, IL = 100 μA ROSC = 100 kΩ, I/PS at VOUTPUT, ISS O/PS 1 MΩ to VOUTPUT, IL = 50 mA Min. VOUTPUT 5 mA ≤ IL ≤ 100 mA VLINE 6 V ≤ VINPUT ≤ 28 V, IL = 1 mA VL 1 mA ≤ IL ≤ 100 mA, VINPUT = 6 V VDROPOUT IL = 100 mA ILmax OUTPUT tied to VSS, VINPUT = 6 V 4.85 VOL VOH VIL VIH VINH, on VINH, off IINH ILI VREF Comparator hysteresis (note 5) VIN input resistance VOUTPUT = 4.5 V, IOL = 8 mA VOUTPUT = 1.2 V, IOL = 0.5 mA VOUTPUT = 4.5 V, IOH= -1 mA VOUTPUT = 1.2 V, IOH= -20 μA VINH = 5 V VSS ≤ VTCL ≤ VOUTPUT Version V50 Version V53 Version V55 VHY RVIN 150 3.5 0.9 VSS 2.5 3.5 1.475 1.475 1.235 Typ. Max. Unit 0 1 μA 80 135 μA 90 140 μA 1.7 4 mA 5 5 5.15 30 V mV 50 250 200 95 500 500 mV mV mA 0.25 0.04 4.1 1.05 0.45 0.2 V V V V V V V V μA μA V V V mV MΩ 0.5 VOUTPUT 4 0.05 1.520 1.520 1.275 2 100 0.8 8 1.565 1.565 1.315 Table 3 Note 1: Note 2: Note 3: Note 4: Note 5: if INPUT is connected to VSS, no reverse current will flow from the OUTPUT to the INPUT. regulation is measured at constant junction temperature using pulse testing with a low duty cycle. the dropout voltage is defined as the INPUT to OUTPUT differential, measured with the input voltage equal to 5.0 V. the comparator and the voltage regulator have separate voltage references (see “Block Diagram” Fig. 3). the comparator reference is the power-down reset threshold. The power-on reset threshold equals the comparator reference voltage plus the comparator hysteresis (see Fig. 5). Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 4 www.emmicroelectronic.com R EM6153 Timing Characteristics VINPUT = 13.5 V, IL = 100 μA, CL = 10 μF + 100 nF, CINPUT = 22 μF, VINH = 5 V, Tj = -40 to + 125 °C, unless otherwise specified Parameter Propagation delay TCL to Output Pins VIN sensitivity Watchdog Reset Pulse Period Version V50 Power-on Reset delay Closed Window Time Open Window Time Watchdog Time Watchdog Reset Pulse Width if no TCL Version V53 Power-on Reset delay Closed Window Time Open Window Time Watchdog Time Watchdog Reset Pulse Width if no TCL Version V55 Power-on Reset delay Closed Window Time Open Window Time Watchdog Time Watchdog Reset Pulse Width if no TCL Watchdog Reset Pulse Width in Sleep Mode Watchdog Reset Pulse Period in Sleep Mode Symbol Test Conditions TDIDO TSEN VINhigh=1.1xVREF, VINlow=0.9xVREF TWDRP TCL inactive Min. TPOR TCW TOW TWD TWDR ROSC= 121.6 kΩ ±1% 91.6 74 37 92.5 2.25 100 80 40 100 2.5 108.3 85.76 42.88 107.2 2.75 ms TPOR TCW TOW TWD TWDR ROSC = 23.2 kΩ ±1% 4.57 9.24 18.48 18.48 0.56 5.0 10 20 20 0.625 5.44 10.77 21.54 21.54 0.69 ms TPOR TCW TOW TWD TWDR TWDRS TWDRPS ROSC = 107.5 kΩ ±1% 91.6 74 37 92.5 2.25 2.8 750 100 80 40 100 2.5 3.2 1100 108.3 85.76 42.88 107.2 2.75 3.6 1450 ms ROSC off; RINT=1MΩ TCL inactive Typ. Max. 250 500 0.5 3 15 TCW + TOW+ TWDR Units ns μs ms Table 4 For different values of TWD and ROSC, see figures 9 to 11. Timing Waveforms Watchdog Timeout Period Version V50: Version V53: For ROSC=121.6 kOhm TWD TWD TCW (closed window) Watchdog timer reset For ROSC=23.2 kOhm TOW (open) 80 TCW (closed) 120 Watchdog timer reset Time [ms] TOW (open) 10 30 Time [ms] ( V30, V50 and V55 have similar ratios for T CW and TOW ) Fig. 4 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 5 www.emmicroelectronic.com R EM6153 Voltage Monitoring VIN Conditions: VOUTPUT > 3V No timeout VHY VREF TSEN TSEN TSEN TSEN TPOR TPOR RES Fig. 5 Timer Reaction Conditions: VIN > VREF after power-up sequence TTCL TCW TCW TCW + TOW TCW + TOW TOW TCW TCW + TOW TTCL TCL RES EN TWDR 1 2 3 3 correct TCL services EN goes active low Timeout - Watchdog timer reset Fig. 6 Combined Voltage and Timer Reaction VIN Condition: VOUTPUT > 3V VREF TPOR TCL TOW TTCL TCW TCW+TOW RES EN 1 2 3 TCL too early 3 correct TCL services EN goes active low - Watchdog timer reset Fig. 7 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 6 www.emmicroelectronic.com R EM6153 Functional Description good load regulation a 10 μF capacitor (or greater) is needed on the INPUT (see Fig. 8). Tantalum or aluminum electrolytic are adequate for the 10 μF capacitor; film types will work but are relatively expensive. Many aluminum electrolytic have electrolytes that freeze at about –30°C, so tantalums are recommended for operation below –25°C. The important parameters of the 10 μF capacitor are an effective series resistance of lower than 4 Ω and a resonant frequency above 500 kHz. VIN Monitoring The power-on reset and the power-down reset are generated as a response to the external voltage level applied on the VIN input. The threshold voltage at which reset is asserted or released (VRESET) is determined by the external voltage divider between VDD and VSS, as shown on Fig. 8. A part of VDD is compared to the internal voltage reference. To determine the values of the divider, the leakage current at VIN must be taken into account as well as the current consumption of the divider itself. Low resistor values will need more current, but high resistor values will make the reset threshold less accurate at high temperature, due to a possible leakage current at the VIN input. The sum of the two resistors (R1 + R2) should stay below 500 kΩ. The formula is: A 10 μF capacitor (or greater) and a 100 nF capacitor are required on the OUTPUT to prevent oscillations due to instability. The specification of this 10 μF capacitor is as per the 10 μF capacitor on the INPUT (see previous paragraph). Example: choosing R1 = 200 kΩ and R2 = 100 kΩ gives VRESET =4.56 V (typical) for version V50 and V53. The EM6153 will remain stable and in regulation with no external load and the dropout voltage is typically constant as the input voltage fall below its minimum level (see Table 2). These features are especially important in CMOS RAM keep-alive applications. At power-up the reset output ( RES ) is held low (see Fig. 5). Power Dissipation When VIN becomes greater than VREF, the RES output is held low for an additional power-on-reset (POR) delay TPOR (defined with the external resistor connected at ROSC pin). The TPOR delay prevents repeated toggling of RES even if VDD voltage drops out and recovers. The TPOR delay allows the microprocessor’s crystal oscillator time to start and stabilize and ensures correct recognition of the reset signal to the microprocessor. Care must be taken not to exceed the maximum junction temperature (+125°C). The power dissipation within the EM6153 is given by the formula: VRESET = VREF x (1 + R1/R2). PTOTAL = (VINPUT – VOUTPUT) × IOUTPUT + (VINPUT) × ISS The maximum continuous power dissipation at a given temperature can be calculated using the formula: PMAX = ( 125°C – TA) / Rth(j-a) where Rth(j-a) is the thermal resistance from the junction to the ambient and is specified in Table 2. Note that Rth(j-a) given in Table 2 assumes that the package is soldered to a PCB (see figure 16). The above formula for maximum power dissipation assumes a constant load (i.e. >100 s). The transient thermal resistance for a single pulse is much lower than the continuous value. The RES output goes active low generating the powerdown reset whenever VIN falls below VREF. The sensitivity or reaction time of the internal comparator to the voltage level on VIN is typically 3 μs. Timer Programming The on-chip oscillator allows the user to adjust the power-on reset (POR) delay TPOR and the watchdog time TWD by changing the resistor value of the external resistor ROSC connected between the pin ROSC and VSS (see Fig. 8). The closed and open window times (TCW and TOW) as well as the watchdog reset pulse width (TWDR), which are TTCL dependent, will vary accordingly. The watchdog time TWD can be obtained with figures 9 to 12 or with the Excel application EM6151ResCalc.xls available on EM website. TPOR is equal to TWD with the minimum and maximum tolerances increased by 1% (For Version 53, TPOR is one fourth of TWD). CAN-Bus Sleep Mode Detector (version 55) When the microcontroller goes into a standby mode, it implies that it does not send any pulses on the TCL input of the EM6153. After three reset pulse periods (TCW + TOW + TWDR) on the RES output, the circuit switches on an internal resistor of 1 MΩ, and it will have a reset pulse of typically 3 ms every 1 second on the RES output. When a TCL edge Note that the current consumption increases as the frequency increases. Watchdog Timeout Period Description (rising or falling) appears on the TCL input or the power supply goes down and up, the circuit switches to the ROSC. The watchdog timeout period is divided into two periods, a closed window period (TCW) and an open window period (TOW), see Fig. 4. If no pulse is applied on the TCL input Voltage Regulator The EM6153 has a 5 V, 150 mA, low dropout voltage regulator. The low supply current makes the EM6153 particularly suitable for automotive systems which remain continuously powered. The input voltage range is 4 V to 40 V for operation and the input protection includes both reverse battery (42 V below ground) and load dump (positive transients up to 45 V). There is no reverse current flow from the OUTPUT to the INPUT when the INPUT equals VSS. This feature is important for systems which need to implement (with capacitance) a minimum power supply hold-up time in the event of power failure. To achieve Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. during the open window period TOW, the RES output goes low for a time TWDR. When a pulse is applied on the TCL input, the cycle is restarted with a close window period. For example if TWD = TPOR = 100ms, TCW = 80 ms, TOW = 40ms and TWDR = 2.5ms. When VIN recovers after a drop below VREF, the pad RES is set low for the time TPOR during which any TCL activation is disabled. 7 www.emmicroelectronic.com R EM6153 of the POR delay. A TCL pulse will have no effect until this power-on-reset delay is completed. When the risk exists that TCL temporarily floats, e.g. during TPOR, a pull-up to VOUTPUT is required on that pin. After the POR delay has elapsed, RES goes inactive and the watchdog timer starts acting. If no TCL pulse occurs, RES goes active low for a short time TWDR after each closed and open window period. A TCL pulse coming during the open window clears the watchdog timer. When the TCL pulse occurs too early (during the closed window), RES goes active and a new timeout sequence starts. A voltage drop below the VREF level for longer than typically 3μs overrides the timer and immediately forces RES active and EN inactive. Any further TCL pulse has no effect until the next power-up sequence has completed. Timer Clearing and RES Action The watchdog circuit monitors the activity of the processor. If the user’s software does not send a pulse to the TCL input within the programmed open window timeout period a short watchdog RES pulse is generated which is equal to TWDR (see Fig. 6). With the open window constraint, new security is added to conventional watchdogs by monitoring both software cycle time and execution. Should software clear the watchdog too quickly (incorrect cycle time) or too slowly (incorrect execution) it will cause the system to be reset. If software is stuck in a loop which includes the routine to clear the watchdog then a conventional watchdog would not make a system reset even though the software is malfunctioning; the circuit would make a system reset because the watchdog would be cleared too quickly. If no TCL signal is applied before the closed and open windows expire, RES will start to generate square waves of period TWDRP = TCW + TOW + TWDR. The watchdog will remain in this state until the next TCL falling edge appears during an open window, or until a fresh power-up sequence. The system enable output, EN , can be used to prevent critical control functions being activated in the event of the system going into this failure mode (see section “Enable- EN Output”). The RES output must be pulled up to VOUTPUT even if the output is not used by the system (see Fig 8). Enable - EN Output The system enable output, EN , is inactive always when RES is active and remains inactive after a RES pulse until the watchdog is serviced correctly 3 consecutive times (i.e. the TCL pulse must come in the open window). After three consecutive services of the watchdog with TCL during the open window, the EN goes active low. A malfunctioning system would be repeatedly reset by the watchdog. In a conventional system critical motor controls could be energized each time reset goes inactive (time allowed for the system to restart) and in this way the electrical motors driven by the system could function out of control. The circuit prevents the above failure mode by using the EN output to disable the motor controls until software has successfully cleared the watchdog three times (i.e. the system has correctly re-started after a reset condition). Combined Voltage and Timer Action The combination of voltage and timer actions is illustrated by the sequence of events shown in Fig. 6. On power-up, when the voltage at VIN reaches VREF, the power-on-reset, POR, delay is initialized and holds RES active for the time Typical Application Unregulated Voltage INPUT VDD EM6153 Inhibit Regulated Voltage (5V) OUTPUT + 100nF 10uF R1 Address decoder VIN INH 22uF + ROSC VSS TCL Microprocessor RES RES EN 100k EN R2 Motor controls GND Fig. 8 The important parameters of the 10 μF input capacitor are an effective series resistance lower than 4 Ω and a resonant frequency above 500 kHz. Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 8 www.emmicroelectronic.com R EM6153 V50 ROSC Coefficient versus TWD at VDD= 5.0V and Tj=-40 to +125°C 1.44 1.38 Max Rosc Coefficient [kOhm/ms] 1.32 1.26 1.20 Typ 1.14 1.08 Min 1.02 0.96 10 100 1000 Twd [ms] Fig. 9 V53 ROSC Coefficient versus TWD at VDD= 5.0V and Tj=-40 to +125°C 1.46 1.40 Max Rosc Coefficient [kOhm/ms] 1.34 1.28 1.22 Typ 1.16 1.10 Min 1.04 0.98 10 100 1000 Twd [ms] Fig. 10 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 9 www.emmicroelectronic.com R EM6153 V55 ROSC Coefficient versus TWD at VDD= 5.0V and Tj=-40 to +125°C 1.34 1.28 Max Rosc Coefficient [kOhm/ms] 1.22 1.16 1.10 Typ 1.04 0.98 Min 0.92 0.86 10 100 1000 Twd [ms] Fig. 11 Typical maximum OUTPUT current versus INPUT voltage 200 Exposed Pad SO-16 Package Botton slug soldered to PCB 180 160 OUTPUT Current [mA] 140 TA=25°C 120 100 80 TA=85°C 60 40 20 0 5 10 15 20 25 30 35 40 INPUT Voltage [V] Fig. 12 Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 10 www.emmicroelectronic.com R EM6153 Package Information Dimensions of Exposed Pad SO-16 Package Dimensions in mm Min Nom A 1.43 1.55 A1 0.00 0.05 A2 1.43 1.50 B 0.35 0.41 C 0.19 0.20 D 9.80 9.93 E 3.81 3.94 e 1.27 H 5.84 5.99 L 0.41 0.64 Max 1.68 0.10 1.58 0.49 0.25 9.98 3.99 6.20 0.89 Exposed pad: 3.56 x 2.29 mm Fig. 13 Dual Layer PCB 85.00 Vss Vss EN RES TCL INH VIN 12.50 OUTPUT 55.00 23.50 INPUT EM6153 Ex Pad SO16 Top View Dimensions in mm EM6153 Ex Pad SO16 Botton View Fig. 14 EM Microelectronic-Marin SA (EM) makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in EM's General Terms of Sale located on the Company's web site. EM assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of EM are granted in connection with the sale of EM products, expressly or by implications. EM's products are not authorized for use as components in life support devices or systems. SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2006, EM Microelectronic-Marin SA 06/06, rev. B, prelim. 11 www.emmicroelectronic.com