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MIC5236
Micrel, Inc.
MIC5236
Low Quiescent Current Cap LDO Regulator
General Description
The MIC5236 is a low quiescent current, Cap low-dropout regulator. With a maximum operating input voltage of 30V and a quiescent current of 20A, it is ideal for supplying keep-alive power in systems with high-voltage batteries. Capable of 150mA output, the MIC5236 has a dropout voltage of only 300mV. It can also survive an input transient of -20V to +60V. As a Cap LDO, the MIC5236 is stable with either a ceramic or a tantalum output capacitor. It only requires a 1.0F output capacitor for stability. The MIC5236 includes a logic compatible enable input and an undervoltage error flag indicator. Other features of the MIC5236 include thermal shutdown, current-limit, overvoltage shutdown, load-dump protection, reverse leakage protections, and reverse battery protection. Available in the thermally enhanced SOIC-8 and MSOP-8, the MIC5236 comes in fixed 2.5V, 3.0V, 3.3V, 5.0V, and adjustable voltages. For other output voltages, contact Micrel.
Features
* Ultra-low quiescent current (IQ = 20A @IO = 100A) * Wide input range: 2.3V to 30V * Low dropout: 230mV @50mA; 300mV @150mA * Fixed 2.5V, 3.0V, 3.3V, 5.0V, and Adjustable outputs * 1.0% initial output accuracy * Stable with ceramic or tantalum output capacitor * Load dump protection: -20V to +60V input transient survivability * Logic compatible enable input * Low output flag indicator * Overcurrent protection * Thermal shutdown * Reverse-leakage protection * Reverse-battery protection * High-power SOIC-8 and MSOP-8
Applications
* Keep-alive supply in notebook and portable personal computers * Logic supply from high-voltage batteries * Automotive electronics * Battery-powered systems
Typical Application
VIN 30V MIC5236 IN OUT EN ERR GND VOUT 3.0V/100A IGND = 20A VIN 5V MIC5236 IN OUT EN ERR GND VOUT 3.0V/150mA VERR
47k
COUT
Regulator with Low IO and Low IQ
VIN 5V
MIC5236 IN OUT EN
ADJ GND
Regulator with Error Output
VOUT 3.0V/150mA
R1 R2
Regulator with Adjustable Output
Micrel, Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
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MIC5236
MIC5236
Micrel, Inc. Part Number* Voltage ADJ ADJ 2.5V 2.5V 3.0V 3.0V 3.3V 3.3V 5.0V 5.0V Junction Temp. Range -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 8-Pin SOIC 8-Pin MSOP 8-Pin SOIC 8-Pin MSOP 8-Pin SOIC 8-Pin MSOP 8-Pin SOIC 8-Pin MSOP 8-Pin SOIC 8-Pin MSOP
Ordering Information
Standard MIC5236BM MIC5236BMM MIC5236-2.5BM MIC5236-2.5BMM MIC5236-3.0BM MIC5236-3.0BMM MIC5236-3.3BM MIC5236-3.3BMM MIC5236-5.0BM MIC5236-5.0BMM Pb-Free MIC5236YM MIC5236YMM MIC5236-2.5YM MIC5236-2.5YMM MIC5236-3.0YM MIC5236-3.0YMM MIC5236-3.3YM MIC5236-3.3YMM MIC5236-5.0YM MIC5236-5.0YMM
* Contact factory regarding availability for voltages not listed
Pin Configuration
ERR 1
IN 2 OUT 3 EN 4 8 GND 7 GND 6 GND 5 GND
ADJ 1
IN 2 OUT 3 EN 4
8 GND 7 GND 6 GND 5 GND
8-Pin SOIC (M) 8-Pin MSOP (MM)
8-Pin SOIC (M) 8-Pin MSOP (MM)
Pin Description
Pin Number Pin Number 1 Pin Name /ERR Pin Function Error (Output): Open-collector output is active low when the output is out of regulation due to insufficient input voltage or excessive load. An external pull-up resistor is required. Adjustable Feedback Input. Connect to voltage divider network. Power supply input. Regulated Output Enable (Input): Logic low = shutdown; logic high = enabled. Ground: Pins 5, 6, 7, and 8 are internally connected in common via the leadframe.
1 2 3 4 5-8 2 3 4 5-8
ADJ IN OUT EN GND
MIC5236
2
July 2005
MIC5236
Micrel, Inc.
Absolute Maximum Ratings (Note 1)
Supply Voltage (VIN), Note 3 .........................-20V to +60V Power Dissipation (PD), Note 4 ............... Internally Limited Junction Temperature (TJ) ....................................... +150C Storage Temperature (TS) ........................ -65C to +150C Lead Temperature (soldering, 5 sec.) ........................ 260C ESD Rating, Note 5
Operating Ratings (Note 2)
Supply Voltage (VIN) .................................... + 2.3V to +30V Junction Temperature (TJ) ........................ -40C to +125C Package Thermal Resistance MSOP (JA) ........................................................................ 80C/W SOIC (JA) .......................................................... 63C/W
Electrical Characteristics
VIN = 6.0V; VEN = 2.0V; COUT = 4.7F, IOUT = 100A; TJ = 25C, bold values indicate -40C TJ +125C; unless noted. Symbol Parameter Conditions Min -1 -2 50 Typ VOUT VOUT/T ppm/C VOUT/VOUT VOUT/VOUT Output Voltage Accuracy Output Voltage Temperature Coefficient Line Regulation Load Regulation VIN = VOUT + 1V to 30V IOUT = 100A to 50mA, Note 7 IOUT = 100A to 150mA, Note 7 V Dropout Voltage, Note 8 IOUT = 100A IOUT = 50mA IOUT = 100mA IGND Ground Pin Current VEN 2.0V, IOUT = 100A IOUT = 150mA 0.2 0.15 0.3 50 230 270 300 20 0.5 1.5 2.8 0.1 260 160 90 94 95 150 0.1 98 250 400 1 2 0.6 2.0 4.0 5.0 1 350 500 30 0.8 0.5 1.0 0.3 0.5 0.6 1.0 100 400 % % % % % % mV mV mV mV A mA mA mA mA A mA Vrms % % mV mV A A V V variation from nominal VOUT Note 6 Max 1 +2 Units % %
VEN 2.0V, IOUT = 50mA
VEN 2.0V, IOUT = 100mA VEN 2.0V, IOUT = 150mA
IGND(SHDN) ISC en
Ground Pin in Shutdown Short Circuit Current Output Noise Low Threshold High Threshold /ERR Output Low Voltage /ERR Output Leakage
VOUT = 0V
VEN 0.6V, VIN = 30V
/ERR Output V/ERR VOL ILEAK Enable Input VIL Input Low Voltage Input High Voltage
10Hz to 100kHz, VOUT = 3.0V, CL = 1.0F
% of VOUT
% of VOUT VIN = VOUT(nom) - 0.12VOUT, IOL = 200A
VOH = 30V
regulator off regulator on
VIH
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MIC5236
MIC5236
Symbol IIN Parameter Enable Input Current Conditions VEN = 0.6V, regulator off VEN = 2.0V, regulator on VEN = 30V, regulator on
Note 1. Note 2. Note 3: Note 4: Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating.
Micrel, Inc.
Min Typ 0.01 0.15 0.5 Max 1.0 2.0 1.0 2.0 2.5 5.0 Units A A A A A A
The absolute maximum positive supply voltage (60V) must be of limited duration (100ms) and duty cycle (1%). The maximum continuous supply voltage is 30V. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die termperature, and the regulator will go into thermal shutdown. The JA of the MIC5236-x. xBM (all versions) is 63C/W, and the MIC5236-x.xBMM (all versions) is 80C/W, mounted on a PC board (see "Thermal Characteristics" for further details). Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range. Regulation is measured at constant junction temperature using pulse testing with a low duty-cycle. Changes in output voltage due to heating effects are covered by the specification for thermal regulation. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1.0V differential.
Note 5. Note 6: Note 7: Note 8:
MIC5236
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July 2005
MIC5236
Micrel, Inc.
Typical Characteristics
Dropout Voltage vs. Output Current
OUTPUT VOLTAGE (V)
3.5 3.0 2.5 2.0 1.5 1.0 1.5
Dropout Characteristics
ILOAD = 10mA ILOAD = 50mA
600
400
Dropout Voltage vs. Temperature
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
300 200 100 0
500 400 300 200 100
ILOAD = 150mA
ILOAD = 150mA
ILOAD = 100mA
VOUT = 98% of Nominal VOUT
MIC5236-3.0
0 40 80 120 160 200 OUTPUT CURRENT (mA)
MIC5236-3.0
2.0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V)
MIC5236-3.0 0 -40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)
GROUND PIN CURRENT (mA)
4 3 2 1 0
Ground Current vs. Output Current
GROUND PIN CURRENT (A)
MIC5236-3.0
25 20 15 10 5 0
Ground Pin Current vs. Output Current
GROUND CURRENT (mA)
VIN = 4V
VIN = 10V
5 4 3 2 1 0 0
Ground Current vs. Supply Voltage
MIC5236-3.0
ILOAD = 150mA
VOUT = 3V
VIN = 4V
VIN = 10V
ILOAD = 100A
1 2 3 4 5 6 7 8
MIC5236-3.0
0 100 200 300 400 500 OUTPUT CURRENT (A)
0
20 40 60 80 100 120 140 160 OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (V)
100
GROUND PIN CURRENT (A)
Ground Current vs. Supply Voltage
GROUND CURRENT (mA)
MIC5236-3.0
0.10 0.08 0.06 0.04 0.02
Ground Current vs. Temperature
GROUND CURRENT (mA)
1.2 1.0 0.8 0.6 0.4 0.2
Ground Current vs. Temperature
90 80 70 60 50 40 30 20 10 0 0 1 2 3
ILOAD = 10mA
VIN = 4V
ILOAD = 10mA
VIN = 4V
1mA 100A
ILOAD = 75mA
10A
4
5
6
7
8
0 -40 -20 0
MIC5236-3.0
20 40 60 80 100 120 TEMPERATURE (C)
MIC5236-3.0 0 -40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)
SUPPLY VOLTAGE (V)
GROUND CURRENT (mA)
3
VOLTAGE OUTPUT (V)
3.010 3.005 3.000 2.995 2.990
MIC5236-3.0
SHORT CIRCUIT CURRENT (mA)
4
Ground Current vs. Temperature
3.015
Output Voltage vs. Temperature
285 280 275 270 265 260
Short Circuit Current vs. Temperature
VIN = 4V
2 1
ILOAD = 150mA
VIN = 4V ILOAD = 150mA
VOUT = 0V
MIC5236-3.0
0 -40 -20 0 20 40 60 80 100 120
2.985 -40 -20 0
20 40 60 80 100 120
255 -40 -20 0
MIC5236-3.0
20 40 60 80 100 120
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
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MIC5236
MIC5236
Micrel, Inc.
3.018
Line Regulation
MIC5236-3.0
VOLTAGE OUTPUT (V)
3.016 3.014 3.012 3.010 3.008 3.006 3.004 3.002 0
41
INPUT VOLTAGE (V)
Overvoltage Threshold vs. Temperature
MIC5236-3.0
3.5
Current Limit vs. Output Voltage
40 39 38 37 36 -40 -20 0
OUTPUT VOLTAGE (V)
3.0 2.5 2.0 1.5 1.0 0.5 0 0
ILOAD = 10mA
5
10
15
20
25
30
35
MIC5236-3.0
100 200 300 400 CURRENT LIMIT (mA)
INPUT VOLTAGE (V)
20 40 60 80 100 120
TEMPERATURE (C)
120 INPUT CURRENT (mA) 100
Input Current
MIC5236-3.0
OUTPUT-LOW VOLTAGE (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 0
Dropout Induced Error Flag
OUTPUT-LOW VOLTAGE (V)
VE N = 5V 80 R = 30 L
60 40 20 0 -30 -20 -10 0 INPUT VOLTAGE (V) 10
MIC5236-3.0
VIN = 2.7V VOUT =2.62V No Load
1.25 1.00 0.75 0.50 0.25
Current Limit Induced Error Flag
VIN = 6V VOUT = 2.03V RL = 6
MIC5236-3.0
0 0 0.5 1.0 1.5 2.0 2.5 SINK CURRENT (mA) 3.0
0.5 1.0 1.5 SINK CURRENT (mA)
2.0
60 REVERSE CURRENT (A) 50 40 30 20 10 0 0
Reverse Current (Open Input)
REVERSE CURRENT (A)
70 60 50 40 30 20 10 0 0
Reverse Current (Grounded Input)
Note 11
-40C
Note 10
-40C
+25C
+25C
+85C
10 15 20 5 EXTERNAL VOLTAGE (V)
+85C
10 15 20 5 EXTERNAL VOLTAGE (V)
Note 10
MIC5236 IN OUT
EN GND
Reverse Current
Note 11
MIC5236 IN OUT GND
Reverse Current
EN
MIC5236
6
July 2005
MIC5236
Micrel, Inc.
Functional Characteristics
Enable Transient Response Load Transient Response
VOUT (2V/div.)
VOUT (100mV/div.)
VEN (5V/div.)
VIN = 5V IL = 10mA
TIME (250s/div.)
IOUT (100mA/div.)
VIN = 4V VOUT = 3V COUT = 15F ESR = 200m
TIME (250s/div.)
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MIC5236
MIC5236
Micrel, Inc.
Functional Diagram
IN EN RFB1 Error Amplifier RFB2 RFB3 ERR VREF 1.23V MIC5236-x.x GND Error Comparator OUT
MIC5236
8
July 2005
MIC5236
Micrel, Inc. Error Detection Comparator Output The ERR pin is an open collector output which goes low when the output voltage drops 5% below it's internally programmed level. It senses conditions such as excessive load (current limit), low input voltage, and over temperature conditions. Once the part is disabled via the enable input, the error flag output is not valid. Overvoltage conditions are not reflected in the error flag output. The error flag output is also not valid for input voltages less than 2.3V. The error output has a low voltage of 400mV at a current of 200A. In order to minimize the drain on the source used for the pull-up, a value of 200k to 1M is suggested for the error flag pull-up. This will guarantee a maximum low voltage of 0.4V for a 30V pull-up potential. An unused error flag can be left unconnected.
Output Voltage Error Output
5V 1.3V 0V 4.75V 0V
VALID ERROR NOT VALID NOT VALID
Application Information
The MIC5236 provides all of the advantages of the MIC2950: wide input voltage range, load dump (positive transients up to 60V), and reversed-battery protection, with the added advantages of reduced quiescent current and smaller package. Additionally, when disabled, quiescent current is reduced to 0.1A. Enable A low on the enable pin disables the part, forcing the quiescent current to less than 0.1A. Thermal shutdown and the error flag are not functional while the device is disabled. The maximum enable bias current is 2A for a 2.0V input. An open collector pull-up resistor tied to the input voltage should be set low enough to maintain 2V on the enable input. Figure 1 shows an open collector output driving the enable pin through a 200k pull-up resistor tied to the input voltage. In order to avoid output oscillations, slow transitions from low to high should be avoided.
200k
VERR VOUT COUT VIN 5V
200k
MIC5236 IN OUT EN
ERR
GND
SHUTDOWN ENABLE
Input Voltage
Figure 3. Error Output Timing Figure 1. Remote Enable Input Capacitor An input capacitor may be required when the device is not near the source power supply or when supplied by a battery. Small, surface mount, ceramic capacitors can be used for bypassing. Larger values may be required if the source supply has high ripple. Output Capacitor The MIC5236 has been designed to minimize the effect of the output capacitor ESR on the closed loop stability. As a result, ceramic or film capacitors can be used at the output. Figure 2 displays a range of ESR values for a 10F capacitor. Virtually any 10F capacitor with an ESR less than 3.4 is sufficient for stability over the entire input voltage range. Stability can also be maintained throughout the specified load and line conditions with 1F film or ceramic capacitors.
OUTPUT CAPACITOR ESR ()
5 4 3 2 1 0
Stable Region
TJ = 25C VOUT = 10F
5
10
15
20
25
30
Reverse Current Protection The MIC5236 is designed to limit the reverse current flow from output to input in the event that the MIC5236 output has been tied to the output of another power supply. See the graphs detailing the reverse current flow with the input grounded and open. Thermal Shutdown The MIC5236 has integrated thermal protection. This feature is only for protection purposes. The device should never be intentionally operated near this temperature as this may have detrimental effects on the life of the device. The thermal shutdown may become inactive while the enable input is transitioning a high to a low. When disabling the device via the enable pin, transition from a high to low quickly. This will insure that the output remains disabled in the event of a thermal shutdown. Current Limit Figure 4 displays a method for reducing the steady state short circuit current. The duration that the supply delivers current is set by the time required for the error flag output to discharge the 4.7F capacitor tied to the enable pin. The off time is set by the 200K resistor as it recharges the 4.7F capacitor, enabling the regulator. This circuit reduces the short circuit current from 280mA to 15mA while allowing for regulator restart once the short is removed.
INPUT VOLTAGE (V)
Figure 2. Output Capacitor ESR
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MIC5236
MIC5236
1N4148 200k
VIN 5V VERR VOUT COUT
Micrel, Inc. which is typically 75C/W. CA is reduced because pins 5 through 8 can now be soldered directly to a ground plane which significantly reduces the case-to-sink thermal resistance and sink to ambient thermal resistance. Low-dropout linear regulators from Micrel are rated to a maximum junction temperature of 125C. It is important not to exceed this maximum junction temperature during operation of the device. To prevent this maximum junction temperature from being exceeded, the appropriate ground plane heat sink must be used.
900 800 700 600 500 400 300 200 100 0 0 0.25 0.50 0.75 1.00 1.25 1.50 POWER DISSIPATION (W)
200k
MIC5236 IN OUT EN 4.7F
ERR
GND
SHUTDOWN ENABLE
Thermal Characteristics The MIC5236 is a high input voltage device, intended to provide 150mA of continuous output current in two very small profile packages. The power SOIC-8 and power MSOP-8 allow the device to dissipate about 50% more power than their standard equivalents.
Power SOIC-8 Thermal Characteristics
One of the secrets of the MIC5236's performance is its power SO-8 package featuring half the thermal resistance of a standard SO-8 package. Lower thermal resistance means more output current or higher input voltage for a given package size. Lower thermal resistance is achieved by joining the four ground leads with the die attach paddle to create a singlepiece electrical and thermal conductor. This concept has been used by MOSFET manufacturers for years, proving very reliable and cost effective for the user. Thermal resistance consists of two main elements, JC (junction-to-case thermal resistance) and CA (case-to-ambient thermal resistance). See Figure 5. JC is the resistance from the die to the leads of the package. CA is the resistance from the leads to the ambient air and it includes CS (caseto-sink thermal resistance) and SA (sink-to-ambient thermal resistance).
Figure 6. Copper Area vs. Power-SOIC Power Dissipation (TJA) Figure 6 shows copper area versus power dissipation with each trace corresponding to a different temperature rise above ambient. From these curves, the minimum area of copper necessary for the part to operate safely can be determined. The maximum allowable temperature rise must be calculated to determine operation along which curve. T = TJ(max) - TA(max) TJ(max) = 125C TA(max) = maximum ambient operating temperature For example, the maximum ambient temperature is 50C, the T is determined as follows: T = 125C - 50C T = 75C Using Figure 6, the minimum amount of required copper can be determined based on the required power dissipation. Power dissipation in a linear regulator is calculated as follows: PD = (VIN - VOUT) IOUT + VIN * IGND If we use a 3V output device and a 28V input at moderate output current of 25mA, then our power dissipation is as follows: PD = (28V - 3V) x 25mA + 28V x 250A PD = 625mW + 7mW PD = 632mW From Figure 6, the minimum amount of copper required to operate this application at a T of 75C is 25mm2. Quick Method Determine the power dissipation requirements for the design along with the maximum ambient temperature at which the device will be operated. Refer to Figure 7, which shows safe operating curves for three different ambient temperatures: 10 July 2005
SOP-8
qJA
qJC
qCA
AMBIENT
ground plane heat sink area
printed circuit board
Figure 5. Thermal Resistance Using the power SOIC-8 reduces the JC dramatically and allows the user to reduce CA. The total thermal resistance, JA (junction-to-ambient thermal resistance) is the limiting factor in calculating the maximum power dissipation capability of the device. Typically, the power SOIC-8 has a JC of 20C/W, this is significantly lower than the standard SOIC-8 MIC5236
COPPER AREA (mm2)
40C 50C 55C 65C 75C 85C
100C
Figure 4. Remote Enable with Short-Circuit Current Foldback
MIC5236 25C, 50C and 85C. From these curves, the minimum amount of copper can be determined by knowing the maximum power dissipation required. If the maximum ambient temperature is 50C and the power dissipation is as above, 632mW, the curve in Figure 7 shows that the required area of copper is 25mm2. The JA of this package is ideally 63C/W, but it will vary depending upon the availability of copper ground plane to which it is attached.
900 800 700 600 500 400 300 200 100 0 0 0.25 0.50 0.75 1.00 1.25 1.50 POWER DISSIPATION (W) 900 800
Micrel, Inc.
T = 125C J
85C
COPPER AREA (mm2)
700 600 500 400 300 200 100 0 0
50C 25C
COPPER AREA (mm2)
TJ = 125C
85C
0.25 0.50 0.75 1.00 1.25 1.50 POWER DISSIPATION (W)
50C 25C
Figure 9. Copper Area vs. Power-MSOP Power Dissipation (TA)
Power MSOP-8 Thermal Characteristics
Figure 7. Copper Area vs. Power-SOIC Power Dissipation (TA)
COPPER AREA (mm2)
700 600 500 400 300 200 100 0 0 0.25 0.50 0.75 1.00 1.25 1.50 POWER DISSIPATION (W)
The power-MSOP-8 package follows the same idea as the power-SO-8 package, using four ground leads with the die attach paddle to create a single-piece electrical and thermal conductor, reducing thermal resistance and increasing power dissipation capability. Quick Method Determine the power dissipation requirements for the design along with the maximum ambient temperature at which the device will be operated. Refer to Figure 9, which shows safe operating curves for three different ambient temperatures, 25C, 50C, and 85C. From these curves, the minimum amount of copper can be determined by knowing the maximum power dissipation required. If the maximum ambient temperature is 50C, and the power dissipation is 639mW, the curve in Figure 9 shows that the required area of copper is 110mm2,when using the power MSOP-8. Adjustable Regulator Application
MIC5236BM/MM VIN
2 4
Figure 8. Copper Area vs. Power-MSOP Power Dissipation (TJA) The same method of determining the heat sink area used for the power-SOIC-8 can be applied directly to the powerMSOP-8. The same two curves showing power dissipation versus copper area are reproduced for the power-MSOP-8 and they can be applied identically, see Figures 8 and 9.
100C
40C 50C 55C 65C 75C 85C
IN EN
OUT ADJ
5-8
3 1
R1 R2 1F
VOUT
GND
Figure 10. Adjustable Voltage Application The MIC5236BM/MM can be adjusted from 1.24V to 20V by using two external resistors (Figure 10). The resistors set the output voltage based on the following equation: R1 VOUT = VREF (1 + ) R2 Where VREF = 1.23V.
July 2005
11
MIC5236
MIC5236
Micrel, Inc.
Package Information
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 SOIC (M)
0.122 (3.10) 0.112 (2.84)
0.199 (5.05) 0.187 (4.74)
DIMENSIONS: INCH (MM)
0.120 (3.05) 0.116 (2.95)
0.036 (0.90) 0.032 (0.81)
0.043 (1.09) 0.038 (0.97)
0.012 (0.30) R
0.007 (0.18) 0.005 (0.13)
0.012 (0.03)
0.0256 (0.65) TYP
0.008 (0.20) 0.004 (0.10)
5 MAX 0 MIN
0.012 (0.03) R
0.039 (0.99) 0.035 (0.89)
0.021 (0.53)
8-Pin MSOP (MM)
MICREL INC.
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
2180 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
This 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) 2005 Micrel, Inc.
MIC5236
12
July 2005

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