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MIC5209
Micrel
MIC5209
500mA Low-Noise LDO Regulator
General Description
The MIC5209 is an efficient linear voltage regulator with very low dropout voltage, typically 10mV at light loads and less than 500mV at full load, with better than 1% output voltage accuracy. Designed especially for hand-held, battery-powered devices, the MIC5209 features low ground current to help prolong battery life. An enable/shutdown pin on SO-8 and TO-263-5 versions can further improve battery life with near-zero shutdown current. Key features include reversed-battery protection, current limiting, overtemperature shutdown, ultra-low-noise capability (SO-8 and TO-263-5 versions), and availability in thermally efficient packaging. The MIC5209 is available in adjustable or fixed output voltages.
Features
* Meets Intel(R) Slot 1 and Slot 2 requirements * Guaranteed 500mA output over the full operating temperature range * Low 500mV maximum dropout voltage at full load * Extremely tight load and line regulation * Thermally-efficient surface-mount package * Low temperature coefficient * Current and thermal limiting * Reversed-battery protection * No-load stability * 1% output accuracy * Ultra-low-noise capability in SO-8 and TO-263-5
Applications
* * * * * * Pentium II Slot 1 and Slot 2 support circuits Laptop, notebook, and palmtop computers Cellular telephones Consumer and personal electronics SMPS post-regulator/dc-to-dc modules High-efficiency linear power supplies
For space-critical applications where peak currents do not exceed 500mA, see the MIC5219.
Typical Applications
MIC5209-2.5BS
Ordering Information
Part Number MIC5209-2.5BS MIC5209-3.0BS MIC5209-3.3BS Voltage 2.5V 3.0V 3.3V 3.6V 4.2V 5.0V 1.8V 2.5V 3.0V 3.3V 3.6V 5.0V Adj. 2.5V 3.0V 3.3V 3.6V 5.0V Adj. Junct. Temp. Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C 0C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Package SOT-223 SOT-223 SOT-223 SOT-223 SOT-223 SOT-223 SO-8 SO-8 SO-8 SO-8 SO-8 SO-8 SO-8 TO-263-5 TO-263-5 TO-263-5 TO-263-5 TO-263-5 TO-263-5
1
2
3
VIN 3.0V 0.1F
VOUT 2.5V 1% 22F tantalum
MIC5209-3.6BS MIC5209-4.2BS MIC5209-5.0BS MIC5209-1.8BM MIC5209-2.5BM MIC5209-3.0BM MIC5209-3.3BM MIC5209-3.6BM
3.3V Nominal-Input Slot-1 Power Supply
ENABLE SHUTDOWN
MIC5209-5.0BM
1 2 3 4 8 7 6 5
VIN 6V VOUT 5V 2.2F tantalum
MIC5209-5.0BM MIC5209BM MIC5209-2.5BU MIC5209-3.0BU MIC5209-3.3BU MIC5209-3.6BU MIC5209-5.0BU MIC5209BU
470pF
(OPTIONAL)
Ultra-Low-Noise 5V Regulator
Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
August 2, 2000
1
MIC5209
MIC5209
Micrel
Pin Configuration
GND
TAB
1
2
3
IN
GND OUT
EN 1 IN 2 OUT 3 BYP 4
8 7 6 5
GND GND GND GND
MIC5209-x.xBS SOT-223 Fixed Voltages
GND
TAB
5 4 3 2 1
BYP OUT GND IN EN
MIC5209-x.xBM SO-8 Fixed Voltages
EN 1 IN 2 OUT 3 ADJ 4 8 7 6 5 GND
GND
TAB
MIC5209-x.xBU TO-263-5 Fixed Voltages
GND GND GND
5 4 3 2 1
ADJ OUT GND IN EN
MIC5209BM SO-8 Adjustable Voltage
MIC5209BU TO-263-5 Adjustable Voltage
Pin Description
Pin No. SOT-223 1 2, TAB 3 Pin No. SO-8 2 5-8 3 1 4 (fixed) Pin No. TO-263-5 2 3 4 1 5 (fixed) Pin Name IN GND OUT EN BYP Pin Function Supply Input Ground: SOT-223 pin 2 and TAB are internally connected. SO-8 pins 5 through 8 are internally connected. Regulator Output Enable (Input): CMOS compatible control input. Logic high = enable; logic low or open = shutdown. Reference Bypass: Connect external 470pF capacitor to GND to reduce output noise. May be left open. For 1.8V or 2.5V operation, see "Applications Information." Adjust (Input): Feedback input. Connect to resistive voltage-divider network.
4 (adj.)
5 (adj.)
ADJ
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Absolute Maximum Ratings (Note 1)
Supply Input Voltage (VIN) ............................ -20V to +20V Power Dissipation (PD) ............... Internally Limited, Note 3 Junction Temperature (TJ) all except 1.8V ...................................... -40C to +125C 1.8V only .................................................. 0C to +125C Lead Temperature (soldering, 5 sec.) ....................... 260C Storage Temperature (TS) ....................... -65C to +150C
Operating Ratings (Note 2)
Supply Input Voltage (VIN) ........................... +2.5V to +16V Enable Input Voltage (VEN) .................................. 0V to VIN Junction Temperature (TJ) all except 1.8V ...................................... -40C to +125C 1.8V only .................................................. 0C to +125C Package Thermal Resistance .................................. Note 3
Electrical Characteristics
VIN = VOUT + 1.0V; COUT = 4.7F, IOUT = 100A; TJ = 25C, bold values indicate -40C TJ +125C except 0C TJ +125C for 1.8V version; unless noted. Symbol VOUT VOUT/T VOUT/VOUT VOUT/VOUT VIN - VOUT Parameter Output Voltage Accuracy Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage, Note 6 Conditions variation from nominal VOUT Note 4 VIN = VOUT + 1V to 16V IOUT = 100A to 500mA, Note 5 IOUT = 100A IOUT = 50mA IOUT = 150mA IOUT = 500mA IGND Ground Pin Current, Notes 7, 8 VEN 3.0V, IOUT = 100A VEN 3.0V, IOUT = 50mA VEN 3.0V, IOUT = 150mA VEN 3.0V, IOUT = 500mA IGND PSRR ILIMIT VOUT/PD eno Ground Pin Quiescent Current, Note 8 Ripple Rejection Current Limit Thermal Regulation Output Noise Note 10 VEN 0.4V (shutdown) VEN 0.18V (shutdown) f = 120Hz VOUT = 0V Note 9 VOUT = 2.5V, IOUT = 50mA, COUT = 2.2F, CBYP = 0 IOUT = 50mA, COUT = 2.2F, CBYP = 470pF Min -1 -2 40 0.009 0.05 10 115 165 350 80 350 1.8 8 0.05 0.10 75 700 0.05 500 300 900 1000 0.05 0.1 0.5 0.7 60 80 175 250 300 400 500 600 130 170 650 900 2.5 3.0 20 25 3 8 Typical Max 1 2 Units % % ppm/C %/V %/V % % mV mV mV mV mV mV mV mV A A A A mA mA mA mA A A dB mA mA %/W
nV/ Hz nV/ Hz
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MIC5209
ENABLE Input VENL Enable Input Logic-Low Voltage VEN = logic low (regulator shutdown) VEN = logic high (regulator enabled) IENL IENH
Note 1. Note 2. Note 3:
Micrel
0.4 0.18 2.0 0.01 0.01 5 -1 -2 20 25
V V V A A A A
Enable Input Current
VENL 0.4V VENL 0.18V VENH 2.0V
Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(max) = (TJ(max) - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See Table 1 and the "Thermal Considerations" section for details. Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 100A to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load current plus the ground pin current. VEN is the voltage externally applied to devices with the EN (enable) input pin. [SO-8 (M) and TO-263-5 (U) packages only.] Thermal regulation is the change in output voltage at a time "t" after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 500mA load pulse at VIN = 16V for t = 10ms.
Note 4: Note 5: Note 6: Note 7: Note 8: Note 9:
Note 10: CBYP is an optional, external bypass capacitor connected to devices with a BYP (bypass) or ADJ (adjust) pin. [SO-8 (M) and TO-263-5 (U) packages only].
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Block Diagrams
IN OUT VOUT COUT
VIN
Bandgap Ref.
Current Limit Thermal Shutdown MIC5209-x.xBS GND
Low-Noise Fixed Regulator (SOT-223 version only)
VIN
IN BYP
OUT
VOUT COUT
CBYP (optional) Bandgap Ref. VREF EN Current Limit Thermal Shutdown MIC5209-x.xBM/U GND
Ultra-Low-Noise Fixed Regulator
VIN
IN
OUT
VOUT COUT
ADJ Bandgap Ref. VREF EN Current Limit Thermal Shutdown MIC5209BM/U [adj.] GND
R1 R2 CBYP (optional)
Ultra-Low-Noise Adjustable Regulator
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MIC5209
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Typical Characteristics
Power Supply Rejection Ratio
0 -20 PSRR (dB) -40 -60 -80 IOUT = 100A COUT = 1F VIN = 6V VOUT = 5V PSRR (dB) 0 -20 -40 -60 -80 IOUT = 1mA COUT = 1F
Power Supply Rejection Ratio
VIN = 6V VOUT = 5V PSRR (dB) 0 -20 -40 -60 -80
Power Supply Rejection Ratio
VIN = 6V VOUT = 5V
IOUT = 100mA COUT = 1F
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
Power Supply Rejection Ratio
0 -20 PSRR (dB) -40 -60 -80 IOUT = 100A COUT = 2.2F CBYP = 0.01F VIN = 6V VOUT = 5V PSRR (dB) 0 -20 -40 -60 -80
Power Supply Rejection Ratio
0 VIN = 6V VOUT = 5V PSRR (dB) -20 -40 -60 -80
Power Supply Rejection Ratio
VIN = 6V VOUT = 5V
IOUT = 1mA COUT = 2.2F CBYP = 0.01F
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
-100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
IOUT = 100mA COUT = 2.2F CBYP = 0.01F
Power Supply Ripple Rejection vs. Voltage Drop
60 RIPPLE REJECTION (dB) 50 40 30 20 10 COUT = 1F 0 0 0.1 0.2 0.3 VOLTAGE DROP (V) 0.4 1mA RIPPLE REJECTION (dB) 500mA pending
Power Supply Ripple Rejection vs. Voltage Drop
100 90 80 70 60 50 40 30 20 10 0 IOUT = 100mA 10mA COUT = 2.2F CBYP = 0.01F 0 0.1 0.2 0.3 VOLTAGE DROP (V) 0.4 500mA pending 1mA NOISE (V/Hz) 10
Noise Performance
10mA, COUT = 1F 1 0.1 0.01 500mA Pending 0.001 VOUT = 5V 0.0001 10 100 1k 10k 100k 1M 10M 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 FREQUENCY (Hz)
10mA
IOUT = 100mA
Noise Performance
10 1 NOISE (V/Hz) 0.1 500mA Pending 0.01 0.001 VOUT = 5V COUT = 10F electrolytic 1mA 100mA 10mA NOISE (V/Hz) 10 1 0.1
Noise Performance
400 DROPOUT VOLTAGE (mV)
Dropout Voltage vs. Output Current
500mA Pending 100mA
300
200
0.0001 10 100 1k 10k 100k 1M 10M 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 FREQUENCY (Hz)
1mA VOUT = 5V COUT = 10F 0.001 electrolytic 10mA CBYP = 100pF 0.0001 10 100 1k 10k 100k 1M 10M 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 FREQUENCY (Hz)
0.01
100
0 0
100 200 300 400 500 OUTPUT CURRENT (mA)
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Micrel
Dropout Characteristics
3.5 OUTPUT VOLTAGE (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 0 1 I =500mA L 2345678 INPUT VOLTAGE (V) 9 I =100mA L GROUND CURRENT (mA) I =100A L 12 10 8 6 4 2 0 0
Ground Current vs. Output Current
100 200 300 400 500 OUTPUT CURRENT (mA)
Ground Current vs. Supply Voltage
25 GROUND CURRENT (mA) 3.0 GROUND CURRENT (mA) 20 15 10 5 0 0 IL=500mA 2345678 INPUT VOLTAGE (V) 2.5 2.0 1.5 1.0 0.5 0 0
Ground Current vs. Supply Voltage
IL=100 mA
1
9
IL=100A 2 4 6 INPUT VOLTAGE (V) 8
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MIC5209
MIC5209
Micrel
Thermal Considerations The SOT-223 has a ground tab which allows it to dissipate more power than the SO-8. Refer to "Slot-1 Power Supply" for details. At 25C ambient, it will operate reliably at 2W dissipation with "worst-case" mounting (no ground plane, minimum trace widths, and FR4 printed circuit board). Thermal resistance values for the SO-8 represent typical mounting on a 1"-square, copper-clad, FR4 circuit board. For greater power dissipation, SO-8 versions of the MIC5209 feature a fused internal lead frame and die bonding arrangement that reduces thermal resistance when compared to standard SO-8 packages.
Package SOT-223 (S) SO-8 (M) TO-263-5 (U) JA 50C/W 50C/W -- JC 8C/W 25C/W 2C/W
Applications Information
Enable/Shutdown Enable is available only on devices in the SO-8 (M) and TO-263-5 (U) packages. Forcing EN (enable/shutdown) high (> 2V) enables the regulator. EN is compatible with CMOS logic. If the enable/ shutdown feature is not required, connect EN to IN (supply input). Input Capacitor A 1F capacitor should be placed from IN to GND if there is more than 10 inches of wire between the input and the ac filter capacitor or if a battery is used as the input. Output Capacitor An output capacitor is required between OUT and GND to prevent oscillation. The minimum size of the output capacitor is dependent upon whether a reference bypass capacitor is used. 1F minimum is recommended when CBYP is not used (see Figure 1). 2.2F minimum is recommended when CBYP is 470pF (see Figure 2). Larger values improve the regulator's transient response. The output capacitor should have an ESR (equivalent series resistance) of about 5 and a resonant frequency above 1MHz. Ultra-low-ESR capacitors can cause a low amplitude oscillation on the output and/or underdamped transient response. Most tantalum or aluminum electrolytic capacitors are adequate; film types will work, but are more expensive. Since many aluminum electrolytics have electrolytes that freeze at about -30C, solid tantalums are recommended for operation below -25C. At lower values of output current, less output capacitance is needed for output stability. The capacitor can be reduced to 0.47F for current below 10mA or 0.33F for currents below 1mA. No-Load Stability The MIC5209 will remain stable and in regulation with no load (other than the internal voltage divider) unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. Reference Bypass Capacitor BYP (reference bypass) is available only on devices in SO-8 and TO-263-5 packages. BYP is connected to the internal voltage reference. A 470pF capacitor (CBYP) connected from BYP to GND quiets this reference, providing a significant reduction in output noise (ultra-low-noise performance). Because CBYP reduces the phase margin, the output capacitor should be increased to at least 2.2F to maintain stability. The start-up speed of the MIC5209 is inversely proportional to the size of the reference bypass capacitor. Applications requiring a slow ramp-up of output voltage should consider larger values of CBYP. Likewise, if rapid turn-on is necessary, consider omitting CBYP. If output noise is not critical, omit CBYP and leave BYP open.
Table 1. MIC5209 Thermal Resistance Multilayer boards with a ground plane, wide traces near the pads, and large supply-bus lines will have better thermal conductivity and will also allow additional power dissipation. For additional heat sink characteristics, please refer to Micrel Application Hint 17, "Designing P.C. Board Heat Sinks", included in Micrel's Databook. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to Regulator Thermals section of Micrel's Designing with LowDropout Voltage Regulators handbook. Low-Voltage Operation The MIC5209-1.8 and MIC5209-2.5 require special consideration when used in voltage-sensitive systems. They may momentarily overshoot their nominal output voltages unless appropriate output and bypass capacitor values are chosen. During regulator power up, the pass transistor is fully saturated for a short time, while the error amplifier and voltage reference are being powered up more slowly from the output (see "Block Diagram"). Selecting larger output and bypass capacitors allows additional time for the error amplifier and reference to turn on and prevent overshoot. To ensure that no overshoot is present when starting up into a light load (100A), use a 4.7F output capacitance and 470pF bypass capacitance. This slows the turn-on enough to allow the regulator to react and keep the output voltage from exceeding its nominal value. At heavier loads, use a 10F output capacitance and 470pF bypass capacitance. Lower values of output and bypass capacitance can be used, depending on the sensitivity of the system. Applications that can withstand some overshoot on the output of the regulator can reduce the output capacitor and/ or reduce or eliminate the bypass capacitor. Applications that are not sensitive to overshoot due to power-on reset delays can use normal output and bypass capacitor configurations. Please note the junction temperature range of the regulator at 1.8V output (fixed and adjustable) is 0C to +125C.
MIC5209
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MIC5209
Fixed Regulator Circuits
VIN MIC5209-x.xBM
2 1
Micrel
Although ADJ is a high-impedance input, for best performance, R2 should not exceed 470k.
VOUT
IN EN
OUT BYP GND
5-8
3 4
VIN
1F
MIC5209BM
2 1
IN EN
OUT ADJ GND
5-8
3 4
VOUT R1 2.2F R2
470pF
Figure 1. Low-Noise Fixed Voltage Regulator Figure 1 shows a basic MIC5209-x.xBM (SO-8) fixed-voltage regulator circuit. See Figure 5 for a similar configuration using the more thermally-efficient MIC5209-x.xBS (SOT-223). A 1F minimum output capacitor is required for basic fixedvoltage applications.
VIN MIC5209-x.xBM
2 1
Figure 4. Ultra-Low-Noise Adjustable Application. Figure 4 includes the optional 470pF bypass capacitor from ADJ to GND to reduce output noise. Slot-1 Power Supply Intel's Pentium II processors have a requirement for a 2.5V 5% power supply for a clock synthesizer and its associated loads. The current requirement for the 2.5V supply is dependant upon the clock synthesizer used, the number of clock outputs, and the type of level shifter (from core logic levels to 2.5V levels). Intel estimates a worst-case load of 320mA. The MIC5209 was designed to provide the 2.5V power requirement for Slot-1 applications. Its guaranteed performance of 2.5V 3% at 500mA allows adequate margin for all systems, and its dropout voltage of 500mV means that it operates from a worst-case 3.3V supply where the voltage can be as low as 3.0V.
VIN MIC5209-x.xBS
1
IN EN
OUT BYP GND
5-8
3 4
VOUT
2.2F
470pF
Figure 2. Ultra-Low-Noise Fixed Voltage Regulator Figure 2 includes the optional 470pF noise bypass capacitor between BYP and GND to reduce output noise. Note that the minimum value of COUT must be increased when the bypass capacitor is used. Adjustable Regulator Circuits
VIN MIC5209BM
2 1
IN
OUT GND
2,TAB
3
VOUT
IN EN
OUT ADJ GND
5-8
3 4
VOUT R1 1F R2
CIN 0.1F COUT 22F
Figure 5. Slot-1 Power Supply Figure 3. Low-Noise Adjustable Voltage Regulator The MIC5209BM/U can be adjusted to a specific output voltage by using two external resistors (Figure 3). The resistors set the output voltage based on the equation: R2 VOUT = 1.242V 1 + R1 This equation is correct due to the configuration of the bandgap reference. The bandgap voltage is relative to the output, as seen in the block diagram. Traditional regulators normally have the reference voltage relative to ground; therefore, their equations are different from the equation for the MIC5209BM/U. A Slot-1 power supply (Figure 5) is easy to implement. Only two capacitors are necessary, and their values are not critical. CIN bypasses the internal circuitry and should be at least 0.1F. COUT provides output filtering, improves transient response, and compensates the internal regulator control loop. Its value should be at least 22F. CIN and COUT may be increased as much as desired.
Slot-1 Power Supply Power Dissipation Powered from a 3.3V supply, the Slot-1 power supply of Figure 5 has a nominal efficiency of 75%. At the maximum anticipated Slot 1 load (320mA), the nominal power dissipation is only 256mW. The SOT-223 package has sufficient thermal characteristics for wide design margins when mounted on a single layer copper-clad printed circuit board. The power dissipation of
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MIC5209
MIC5209
the MIC5209 is calculated using the voltage drop across the device x output current plus supply voltage x ground current. Considering worst case tolerances, the power dissipation could be as high as: (VIN(max) - VOUT(max)) x IOUT + VIN(max) x IGND [(3.6V - 2.375V) x 320mA] + (3.6V x 4mA) PD = 407mW Using the maximum junction temperature of 125C and a JC of 8C/W for the SOT-223, 25C/W for the SO-8, or 2C/W for the TO-263 package, the following worst-case heat-sink thermal resistance (SA) requirements are:
JA = TJ(max) - TA PD
Micrel
Table 2 and Figure 6 show that the Slot-1 power supply application can be implemented with a minimum footprint layout. Figure 6 shows the necessary copper pad area to obtain specific heat sink thermal resistance (SA) values. The SA values in Table 2 require much less than 500mm2 of copper, according to Figure 6, and can easily be accomplished with the minimum footprint.
THERMAL RESISTANCE (C/W)
70 60 50 40 30 20 10 0 0 2000 4000 6000
SA = JA - JC
TA JA (limit) SA SOT-223 SA SO-8 SA TO-263-5 40C 209C/W 201C/W 184C/W 207C/W 50C 184C/W 176C/W 159C/W 182C/W 60C 160C/W 152C/W 135C/W 158C/W 75C 123C/W 115C/W 98C/W 121C/W
COPPER HEAT SINK AREA (mm2)
Figure 6. PCB Heat Sink Thermal Resistance
Table 2. Maximum Allowable Thermal Resistance
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Package Information
3.15 (0.124) 2.90 (0.114) C L
C L
3.71 (0.146) 7.49 (0.295) 3.30 (0.130) 6.71 (0.264)
2.41 (0.095) 2.21 (0.087) 4.7 (0.185) 4.5 (0.177) 6.70 (0.264) 6.30 (0.248)
1.04 (0.041) 0.85 (0.033) DIMENSIONS: MM (INCH) 1.70 (0.067) 16 1.52 (0.060) 10 10 MAX
0.10 (0.004) 0.02 (0.0008)
0.038 (0.015) 0.25 (0.010)
0.84 (0.033) 0.64 (0.025) 0.91 (0.036) MIN
SOT-223 (S)
0.026 (0.65) MAX)
PIN 1
0.157 (3.99) 0.150 (3.81)
DIMENSIONS: INCHES (MM)
0.050 (1.27) TYP
0.020 (0.51) 0.013 (0.33) 0.0098 (0.249) 0.0040 (0.102) 0-8 SEATING PLANE 45 0.010 (0.25) 0.007 (0.18)
0.064 (1.63) 0.045 (1.14)
0.197 (5.0) 0.189 (4.8)
0.050 (1.27) 0.016 (0.40) 0.244 (6.20) 0.228 (5.79)
8-Pin SOP (M)
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0.4050.005 0.065 0.010 202 0.0500.005
0.176 0.005 0.060 0.005
0.3600.005 0.6000.025 SEATING PLANE 0.004 +0.004 -0.008
0.0670.005 DIM. = INCH
0.032 0.003
8 MAX 0.015 0.002
0.100 0.01
TO-263-5 (U)
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MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated
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MIC5209

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