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MIC5213
Micrel
MIC5213
TeenyTM SC-70 Cap Low-Dropout Regulator Final Information
General Description
The MIC5213 is a Cap 80mA linear voltage regulator in the TeenyTM SC-70 package. Featuring half the footprint of the standard SOT-23 package, this TeenyTM SC-70 regulator has very low dropout voltage (typically 20mV at light loads and 300mV at 80mA) and very low ground current (225A at 20mA output). It also offers better than 3% initial accuracy and includes a logic-compatible enable input. The Cap regulator design is optimized to work with lowvalue, low-cost ceramic capacitors. The outputs typically require only 0.47F of output capacitance for stability. Designed especially for hand-held, battery-powered devices, the MIC5213 can be controlled by a CMOS or TTL compatible logic signal. When disabled, power consumption drops nearly to zero. If on-off control is not required, the enable pin may be tied to the input for 3-terminal operation. The ground current of the MIC5213 increases only slightly in dropout, further prolonging battery life. Key MIC5213 features include current limiting, overtemperature shutdown, and protection against reversed battery. The MIC5213 is available in 2.5V, 2.6V, 2.7V, 2.8V, 3.0V, 3.3V, 3.6V, and 5.0V fixed voltages. Other voltages are available; contact Micrel for details.
Features
* * * * * * * * * * * * TeenyTM SC-70 package Wide selection of output voltages Guaranteed 80mA output Low quiescent current Low dropout voltage Tight load and line regulation Low temperature coefficient Current and thermal limiting Reversed input polarity protection Zero off-mode current Logic-controlled shutdown Stability with low ESR ceramic capacitors
Applications
* * * * * * Cellular telephones Laptop, notebook, and palmtop computers Battery-powered equipment Bar code scanners SMPS post-regulator/dc-to-dc modules High-efficiency linear power supplies
Ordering Information
Standard Part Number Pb-Free MIC5213-2.5YC5 MIC5213-2.6YC5 MIC5213-2.7YC5 MIC5213-2.8YC5 MIC5213-3.0YC5 MIC5213-3.3YC5 MIC5213-3.6YC5 MIC5213-5.0YC5 Marking Voltage Standard Pb-Free LAM LAQ LAL LAJ LAG LAE LAD LAB LAM LAQ LAL LAJ LAG LAE LAD LAB 2.5V 2.6V 2.7V 2.8V 3.0V 3.3V 3.6V 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 Package SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5 SC-70-5
MIC5213-2.5BC5 MIC5213-2.6BC5 MIC5213-2.7BC5 MIC5213-2.8BC5 MIC5213-3.0BC5 MIC5213-3.3BC5 MIC5213-3.6BC5 MIC5213-5.0BC5
Other voltages available. Contact Micrel for details.
Typical Applications
Enable Shutdown 1 5
LAx
2 3
4
VOUT 0.47F
Regulator Circuit
Teeny is a trademark of Micrel, Inc. Micrel, Inc. * 1849 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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MIC5213
MIC5213
Micrel
Pin Configuration
GND NC
3 2
EN
1
LAx
4 5
OUT
IN
SC-70-5 (C5)
Pin Description
Pin Number 1 2 3 4 5 Pin Name EN NC GND OUT IN Pin Function Enable (Input): TTL/CMOS compatible control input. Logic high = enabled; logic low or open = shutdown. Not internally connected. Ground Regulator Output Supply Input
Absolute Maximum Ratings (Note 1)
Input Supply Voltage (VIN) ............................ -20V to +20V Enable Input Voltage (VEN) ........................... -20V to +20V Power Dissipation (PD) ............................ Internally Limited Storage Temperature Range (TS) ............ -60C to +150C Lead Temperature (Soldering, 5 sec.) ...................... 260C ESD, Note 3
Operating Ratings (Note 2)
Input Voltage (VIN) ........................................... 2.5V to 16V Enable Input Voltage (VEN) .................................. 0V to VIN Junction Temperature Range ................... -40C to +125C Thermal Resistance (JA)......................................... Note 4
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Electrical Characteristics
VIN = VOUT + 1V; IL = 1mA; CL = 0.47F; VEN 2.0V; TJ = 25C, bold values indicate -40C TJ +125C; unless noted. Symbol VO VO/T VO/VO VO/VO VIN-VO Parameter Output Voltage Accuracy Output Voltage Temp. Coefficient Line Regulation Load Regulation Dropout Voltage, Note 7 Note 5 VIN = VOUT + 1V to 16V IL = 0.1mA to 80mA, Note 6 IL = 100A IL = 20mA IL = 50mA IL = 80mA IQ IGND Quiescent Current Ground Pin Current, Note 8 VEN 0.4V (shutdown) IL = 100A, VEN 2.0V (active) IL = 20mA, VEN 2.0V (active) IL = 50mA, VEN 2.0V (active) IL = 80mA, VEN 2.0V (active) IGNDDO ILIMIT VO/PD Enable Input VIL VIH IIL IIH
Note 1. Note 2. Note 3. Note 4.
Conditions
Min -3 -4
Typ
Max 3 4
Units % % ppm/C % % % % mV
50 0.008 0.08 20 200 250 280 0.01 180 225 850 1800 200 180 0.05
200 0.3 0.5 0.3 0.5
350
mV mV
600 10
mV A A A A A A mA %/W
750
3000 300 250
Ground Pin Current in Dropout Current Limit Thermal Regulation
VIN = VOUT(nominal) - 0.5V, Note 8 VOUT = 0V Note 9
Enable Input Voltage Level
Logic Low (off) Logic High (on) 2.0 0.01 8 VIL 0.6V VIH 2.0V
0.6
V V A A
Enable Input Current
1 50
Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal resistance, JA, and the ambient temperature, TA. The maximum allowable power dissipation at any 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. JA of the SC-70-5 is 450C/W, mounted on a PC board. 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 low duty cycle pulse testing. 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. Thermal regulation is defined as 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 an 80mA load pulse at VIN = 16V for t = 10ms.
Note 5. Note 6. Note 7. Note 8. Note 9.
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Typical Characteristics
Dropout Voltage vs. Output Current
400
DROPOUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
1000 DROPOUT VOLTAGE (mV)
Dropout Voltage vs. Temperature
4 CIN = 10F COUT = 1F IL = 80mA 200 IL = 100A
Dropout Characteristics
CIN = 10F COUT = 1F 100
300
3
IL = 100A
2
IL = 80mA CIN = 10F COUT = 1F 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) 7
10
100
IL = 1mA
1
1 0.01
0.1 1 10 100 OUTPUT CURRENT (mA)
0 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
0
2000 GROUND CURRENT (A)
Ground Current vs. Output Current
2.0
GROUND CURRENT (mA)
Ground Current vs. Supply Voltage
GROUND CURRENT (mA)
3.0 2.5 2.0 1.5 1.0 0.5
Ground Current vs. Temperature
CIN = 10F COUT = 1F IL = 80mA
1500
1.5 IL = 100A 1.0
IL = 50mA VOUT = 3.3V
1000
IL = 50mA IL = 100A
500 VIN = VOUT + 1V 0 0 10 20 30 40 50 60 70 80 OUTPUT CURRENT (mA)
0.5
0.0
0
1 2 3 4 5 6 SUPPLY VOLTAGE (V)
7
0.0 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
Output Voltage vs. Output Current
SHORT CIRCUIT CURRENT (mA) 4.0 160 140 120 100 80 60 40 20 0 0
Short Circuit Current vs. Input Voltage
60 40 20 0 -20 -40 -60 100 50 0 OUTPUT (mV)
Thermal Regulation (3.3V Version)
OUTPUT VOLTAGE (V)
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 50 100 150 200 OUTPUT CURRENT (mA) CIN = 10F COUT = 1F
CIN = 10F COUT = 1F
LOAD (mA)
CL = 1F -50 -2 0 2 4 6 8 10 12 14 16 TIME (ms)
1
2 3 4 5 6 INPUT VOLTAGE (V)
7
4.0
Output Voltage vs. Temperature
OUTPUT CURRENT (mA) CIN = 10F COUT = 1F
200 180 160 140 120
Short Circuit Current vs. Temperature
MIN. SUPPLY VOLTAGE (V)
3.5
Minimum Supply Voltage vs. Temperature
OUTPUT VOLTAGE (V)
3.8 3.6 3.4 3.2 3.0 2.8 2.6
IL = 1mA VOUT = 3.3V 3.4
3 DEVICES HI / AVG / LO CURVES APPLICABLE AT 100A AND 50mA
CIN = 10F COUT = 1F
CIN = 10F COUT = 1F 3.3 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
2.4 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
100 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
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Load Transient
OUTPUT (mA) OUTPUT (mV) OUTPUT (mA) OUTPUT (mV)
Load Transient
100 0 -100 100 -200 50 0 -50 -5 0 5 10 TIME (ms) 15 20 COUT = 10F VIN = VOUT + 1
40 0 -40 100 50 0 -50 -1 0 1 2345 TIME (ms) 6 7 8 COUT = 1F VIN = VOUT + 1
Line Transient
OUTPUT (V)
Line Transient
OUTPUT (V)
3 2 1 0 -1 8 -2
CL = 1F IL = 1mA
2 1 0 8 -1 CL = 11F IL = 1mA
INPUT (V)
6 4 2 -0.2 0.0 0.2 0.4 0.6 TIME (ms) 0.8 1.0
INPUT (V)
6 4 2 -0.2 0.0 0.2 0.4 0.6 TIME (ms) 0.8 1.0
Ripple Voltage vs. Frequency
100 100
RIPPLE VOLTAGE (dB)
Ripple Voltage vs. Frequency
100
RIPPLE VOLTAGE (dB)
Ripple Voltage vs. Frequency
RIPPLE VOLTAGE (dB)
80 60 40 20 0
80 60 40 20 0
80 60 40 20 0
IL = 100A CL = 1F VIN = VOUT + 1
IL = 1mA CL = 1F VIN = VOUT + 1
100x100 1x103 10x103 100x103 1x106
IL = 50mA CL = 1F VIN = VOUT + 1
100x100 1x103 10x103 100x103 1x106
10x100
100x100
1x103
10x103
100x103
1x106
10x100
FREQUENCY (Hz)
FREQUENCY (Hz)
10x100
FREQUENCY (Hz)
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Output Impedance
1000
OUTPUT (V)
Enable Characteristics (3.3V Version)
5 4 3 2 1 0 4 -1 2 0 -2 -0.2 0.0 0.2 0.4 0.6 TIME (ms) 0.8 1.0
OUTPUT (V)
Enable Characteristics (3.3V Version)
4.0 3.0 2.0 1.0 0.0 4 -1.0
ENABLE (V)
OUTPUT IMPEDANCE ()
100 10 1 0.1
IL = 100A IL = 1mA
CL = 1F IL = 100A
CL = 1F IL = 100A
ENABLE (V)
2 0 -2 -2 0 2 4 6 TIME (s) 8 10
IL = 100mA
1x100
10x100
1x103
10x103
100x100
FREQUENCY (Hz)
100x103
1x106
0.01
Enable Voltage vs. Temperature
1.50
ENABLE VOLTAGE (mV) ENABLE CURRENT (A)
1.25
CIN = 10F COUT = 1F IL = 1mA
40
Enable Current vs. Temperature
CIN = 10F COUT = 1F IL = 1mA
30
1.00 VOFF 0.75
VON
20 VEN = 2V
VEN = 5V
10
0.50 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
0 -60 -30 0 30 60 90 120 150 TEMPERATURE (C)
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The actual power dissipation of the regulator circuit can be determined using one simple equation. PD = (VIN - VOUT) IOUT + VIN x IGND Substituting PD(max), determined above, for PD and solving for the operating conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, if we are operating the MIC5213-3.0BC5 at room temperature, with a minimum footprint layout, we can determine the maximum input voltage for a set output current. PD(max) = 125 - 25 450C / W
Applications Information
Input Capacitor A 0.1F 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 when a battery is used as the input. Output Capacitor Typical PNP-based regulators require an output capacitor to prevent oscillation. The MIC5213 is ultrastable, requiring only 0.47F of output capacitance for stability. The regulator is stable with all types of capacitors, including the tiny, low-ESR ceramic chip capacitors. The output capacitor value can be increased without limit to improve transient response. No-Load Stability The MIC5213 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. Enable Input The MIC5213 features nearly zero off-mode current. When EN (enable input) is held below 0.6V, all internal circuitry is powered off. Pulling EN high (over 2.0V) re-enables the device and allows operation. When EN is held low, the regulator typically draws only 10nA of current. While the logic threshold is TTL/CMOS compatible, EN may be pulled as high as 20V, independent of VIN. Thermal Behavior The MIC5213 is designed to provide 80mA of continuous current in a very small profile package. Maximum power dissipation can be calculated based on the output current and the voltage drop across the part. To determine the maximum power dissipation of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation:
PD(max) = TJ(max) - TA JA
PD(max) = 222mW To prevent the device from entering thermal shutdown, maximum power dissipation cannot be exceeded. Using the output voltage of 3.0V, and an output current of 80mA, we can determine the maximum input voltage. Ground current, maximum of 3mA for 80mA of output current, can be taken from the "Electrical Characteristics" section of the data sheet. 222mW = (VIN - 3.0V) 80mA + VIN x 3mA
222mW = (80mA x VIN + 3mA x VIN) - 240mW 462mW = 83mA x VIN VIN = 5.57V max. Therefore, a 3.0V application at 80mA of output current can accept a maximum input voltage of 5.6V in an SC-70-5 package. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to Regulator Thermals section of Micrel's Designing with Low-Dropout Voltage Regulators handbook. Fixed Voltage Regulator The MIC5213 is ideal for general-purpose voltage regulation in any handheld device. Applications that are tight for space can easily use the TeenyTM SC-70 regulator which occupies half the space of a SOT-23-5 regulator. The MIC5203 offers a smaller system solution, only requiring a small multilayer ceramic capacitor for stability.
MIC5213-x.x IN 3.6V Li-Ion Cell EN OUT GND VOUT 3.0V
TJ(max) is the maximum junction temperature of the die, 125C, and TA is the maximum ambient temperature. JA is the junction-to-ambient thermal resistance ambient of the regulator. The JA of the MIC5213 is 450C/W.
0.47F
Figure 1. Single-Cell Regulator
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Package Information
0.65 (0.0256) BSC
1.35 (0.053) 2.40 (0.094) 1.15 (0.045) 1.80 (0.071) 2.20 (0.087) 1.80 (0.071) DIMENSIONS: MM (INCH) 1.00 (0.039) 1.10 (0.043) 0.80 (0.032) 0.80 (0.032) 0.18 (0.007) 0.10 (0.004)
0.30 (0.012) 0.15 (0.006)
0.10 (0.004) 0.00 (0.000)
0.30 (0.012) 0.10 (0.004)
SC-70-5 (C5)
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
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) 2004 Micrel, Incorporated
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