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MIC5203
Cap 80mA Low-Dropout Regulator
General Description
The MIC5203 is a Cap 80mA linear voltage regulator with very low dropout voltage (typically 20mV at light loads and 300mV at 80mA) and very low ground current (225A at 20mA output), offering better than 3% initial accuracy with a logic-compatible enable input. TheCap 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 MIC5203 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 3terminal operation. The ground current of the MIC5203 increases only slightly in dropout, further prolonging battery life. Key MIC5203 features include current limiting, overtemperature shutdown, and protection against reversed battery. The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V, 4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages are available. Data sheets and support documentation can be found on Micrel's web site at www.micrel.com.
Features
* * * * * * * * * * * Tiny 4- and 5-lead surface-mount packages Wide selection of output voltages Guaranteed 80mA output Low quiescent current Low dropout voltage 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 Barcode scanners SMPS post-regulator/DC-to-DC modules High-efficiency linear power supplies
_________________________________________________________________________________________________________________________
Typical Application
Enable Shutdow n
LAxx
VOUT 0.47F
Enable Shutdow n
1 2 3
5
VOUT 0.47F
4
SOT-143 Version
SOT-23-5 Version
Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
November 2009
M9999-111909
Micrel, Inc.
MIC5203
Ordering Information(1)
Part Number Standard MIC5203-2.6BM4 MIC5203-2.8BM4 MIC5203-3.0BM4 MIC5203-3.3BM4 MIC5203-3.6BM4 MIC5203-3.8BM4 MIC5203-4.0BM4 MIC5203-4.5BM4 MIC5203-4.7BM4 MIC5203-5.0BM4 MIC5203-2.6BM5 MIC5203-2.8BM5 MIC5203-3.0BM5 MIC5203-3.3BM5 MIC5203-3.6BM5 MIC5203-3.8BM5 MIC5203-4.0BM5 MIC5203-4.5BM5 MIC5203-4.7BM5 MIC5203-5.0BM5
Note: 1. Other Voltage available. Contact Micrel for details.
Marking LA26 LA28 LA30 LA33 LA36 LA38 LA40 LA45 LA47 LA50 LK26 LK28 LK30 LK33 LK36 LK38 LK40 LK45 LK47 LK50
Pb-Free MIC5203-2.6YM4 MIC5203-2.8YM4 MIC5203-3.0YM4 MIC5203-3.3YM4 MIC5203-3.6YM4 MIC5203-3.8YM4 MIC5203-4.0YM4 MIC5203-4.5YM4 MIC5203-4.7YM4 MIC5203-5.0YM4 MIC5203-2.6YM5 MIC5203-2.8YM5 MIC5203-3.0YM5 MIC5203-3.3YM5 MIC5203-3.6YM5 MIC5203-3.8YM5 MIC5203-4.0YM5 MIC5203-4.5YM5 MIC5203-4.7YM5 MIC5203-5.0YM5
Marking LA26 LA28 LA30 LA33 LA36 LA38 LA40 LA45 LA47 LA50 LK26 LK28 LK30 LK33 LK36 LK38 LK40 LK45 LK47 LK50
Voltage 2.6V 2.8V 3.0V 3.3V 3.6V 3.8V 4.0V 4.5V 4.7V 5.0V 2.6V 2.8V 3.0V 3.3V 3.6V 3.8V 4.0V 4.5V 4.7V 5.0V
Temperature Range -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C -40 to +125C
Package SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-143 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5
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MIC5203
Pin Configuration
EN
2
GND
1
E N GND IN
3 2 1
Part Identification
3
LAxx
4
LKxx
4 5
IN
OUT
NC
OUT
SOT-143 (M4)
SOT-23-5 (M5)
Pin Description
Pin Number SOT-143 1 2 3 4 Pin Number SOT-23-5 2 3 1 4 5 Pin Name GND EN IN NC OUT Pin Name Ground. Enable (Input): TTL/CMOS compatible control input. Logic high = enabled; logic low or open = shutdown. Supply input. Not internally connected. Regulator output.
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Absolute Maximum Ratings(1)
Supply Voltage (VIN) ....................................... -20V to +20V Enable Input Voltage (VEN)............................. -20V to +20V Power Dissipation (PD) ..............................Internally Limited Storage Temperature (Ts).........................-60C to +150C Lead Temperature (soldering, #sec.)......................... 260C
Operating Ratings(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 3
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 Parameter Output voltage accuracy Output voltage temperature coefficient Line regulation Load regulation Note 4 VIN = VOUT + 1V to 16V IL = 0.1mA to 80mA(5) IL = 100 A VO - VO Dropout voltage(6) IL = 20mA IL = 50mA IL = 80mA IQ Quiescent current VEN 0.4V (shutdown) IL = 100 A, VEN 2.0V (active) IGND Ground pin current(7) IL = 20mA, VEN 2.0V (active) IL = 50mA, VEN 2.0V (active) IL = 80mA, VEN 2.0V (active) IGNDDO ILIMIT VO/PD Ground pin current at dropout Current limit Thermal regulation VIN = VOUT(nominal) - 0.5V VOUT = 0V Note 8
(7)
Condition
Min -3 -4
Typ
Max 3 4
Units % pm/C % %
50 0.008 0.08 20 200 250 300 0.01 180 225 850 1800 200 180 0.05
200 0.3 0.5 0.3 0.5 350 600 10 750 3000 300 250
mV
A
A
A mA %/W
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Electrical Characteristics (continued)
VIN = VOUT + 1V; IL = 1mA; CL = 0.47F; VEN 2.0V; TJ = 25C, bold values indicate -40C TJ +125C, unless noted. Symbol VIL VIH IIL IIH
Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. The maximum allowable power dissipation at any TA (ambient temperature) is 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. The JA is 250C/W for the SOT-143 and 220C/W for the SOT-23-5 mounted on a printed circuit board. 4. Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range. 5. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. 6. 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. 7. 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. 8. 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 a 150mA load pulse at VIN = 16V for t = 10ms.
Parameter
Condition Logic low (off) Logic high (on) VIL 0.6V VIH 2.0V
Min
Typ
Max 0.6
Units
Enable Input Enable input voltage level Enable input current 2.0 0.01 15 1 50 V A
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Typical Characteristics
1000
DROPOUT VOLTAGE (mV)
Dropout Voltage vs. Output Current
DROPOUT VOLTAGE (mV)
OUTPUT VOLTAGE (V)
CIN = 10F COUT = 1F 100
400 300 200 100
Dropout Voltage vs. Temperature
CIN = 10F COUT = 1F IL = 80mA
4 3 2 1 0
Dropout Characteristics
IL = 100A
IL = 80mA CIN = 10F COUT = 1F 0 1 2 3 45 6 SUPPLY VOLTAGE (V) 7
10
IL = 1mA
IL = 100A
1 0.01
0.1 1 10 100 OUTPUT CURRENT (mA)
0 -60 -30 0 30 60 90 120 150 TEMPERATURE C) (
2000
GROUND CURRENT (A)
Ground Current vs. Output Current
GROUND CURRENT (mA)
2.0 1.5
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 1000 500 VIN = VOUT + 1V 0 0 10 20 30 40 50 60 70 80 OUTPUT CURRENT (mA)
IL = 50mA IL = 100A VOUT = 3.3V
1.0 0.5 0.0 0
IL = 50mA IL = 100A
1 2 3 45 6 SUPPLY VOLTAGE (V)
7
0.0 -60 -30 0 30 60 90 120 150 TEMPERATURE C) (
SHORT CIRCUIT CURRENT (mA)
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
140 120 100 80 60 40 20 0 0 1
LOAD (mA)
OUTPUT (mV)
4.0
Output Voltage vs. Output Current
160
Short Circuit Current vs. Input Voltage
60 40 20 0 -20 -40 -60 100 50 0
Thermal Regulation (3.3V Version)
CIN = 10F COUT = 1F 2 3 45 6 INPUT VOLTAGE (V) 7
-50 -2 0
CL = 1F 2 4 6 8 10 12 14 16 TIME (ms)
4.0
OUTPUT VOLTAGE (V)
Output Voltage vs. Temperature
OUTPUT CURRENT (mA)
3.8 3.6 3.4 3.2 3.0 2.8 2.6
180 160 140 120 100 -60 -30 0 30 60 90 120 150 TEMPERATURE C) ( CIN = 10F COUT = 1F
MIN. SUPPLY VOLTAGE (V)
CIN = 10F COUT = 1F
200
Short Circuit Current vs. Temperature
3.5
Minimum Supply Voltage vs. Temperature
IL = 1mA VOUT = 3.3V 3.4
3 DEVICES HI / AVG / LO CURVES APPLICABLE AT 100A AND 50mA
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) (
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Typical Characteristics (continued)
OUTPUT (mV)
OUTPUT (mV)
OUTPUT (V)
200 0 -200 -400 100
Load Transient
100 0 -100 100 -200 50 0 -50 -5
Load Transient
COUT = 1F VIN = VOUT + 1
COUT = 10F VIN = VOUT + 1
OUTPUT (mA)
OUTPUT (mA)
3 2 1 0 -1 8 -2 6 4
Line Transient
CL = 1F IL = 1mA
50 0 -50 -1 0 1 2345 TIME (ms) 67 8
INPUT (V)
0
5 10 TIME (ms)
15
20
2 -0.2 0.0
0.2 0.4 0.6 TIME (ms)
0.8
1.0
OUTPUT (V)
2 1 0 -1 8
Line Transient
RIPPLE VOLTAGE (dB) CL = 11F IL = 1mA
100 80 60 40 20 0
Ripple Voltage vs. Frequency
RIPPLE VOLTAGE (dB)
100 80 60 40 20 0
Ripple Voltage vs. Frequency
INPUT (V)
6 4 2 -0.2 0.0 0.2 0.4 0.6 TIME (ms) 0.8 1.0
IL = 100A CL = 1F VIN = VOUT + 1
IL = 1mA CL = 1F VIN = VOUT + 1
100x100 1x103 10x103 100x103
0.8
10x100
100x100
1x103
10x103
100x103
1x106
0
10x10
FREQUENCY (Hz)
FREQUENCY (Hz)
100
RIPPLE VOLTAGE (dB)
Ripple Voltage vs. Frequency
1000
Output Impedance
OUTPUT (V)
80 60 40 20 0
OUTPUT IMPEDANCE ( )
100 10 1 0.1
IL = 100A IL = 1mA
5 4 3 2 1 0 4 -1 2 0
Enable Characteristics (3.3V Version)
CL = 1F IL = 100A
IL = 50mA CL = 1F VIN = VOUT + 1
100x100 1x103 10x103 100x103 1x106
IL = 100mA
ENABLE (V)
10x100
1x100
10x100
100x100
1x103
10x103
100x103
FREQUENCY (Hz)
FREQUENCY (Hz)
ENABLE VOLTAGE (mV)
CL = 1F IL = 100A
1.25 1.00 VOFF 0.75
ENABLE CURRENT (A)
4.0 3.0 2.0 1.0 0.0 4 -1.0 2 0 -2 -2
Enable Characteristics (3.3V Version)
1.50
Enable Voltage vs. Temperature
CIN = 10F COUT = 1F IL = 1mA
1x106
0.01
-2 -0.2 0.0
0.2 0.4 0.6 TIME (ms)
1.0
40 30 20 10
Enable Current vs. Temperature
CIN = 10F COUT = 1F IL = 1mA VEN = 5V VEN = 2V
OUTPUT (V)
ENABLE (V)
VON
0
2
4 6 TIME (s)
8
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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MIC5203
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 MIC5203 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. The capacitor should have a resonant frequency above 500kHz. Ceramic capacitors work, but some dielectrics have poor temperature coefficients, which will affect the value of the output capacitor over temperature. Tantalum capacitors are much more stable over temperature, but typically are larger and more expensive. Aluminum electrolytic capacitors will also work, but they have electrolytes that freeze at about -30C. Tantalum or ceramic capacitors are recommended for operation below -25C. No-Load Stability The MIC5203 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 MIC5203 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) reenables the device and allows operation. EN draws a small amount of current, typically 15A. While the logic threshold is TTL/CMOS compatible, EN may be pulled as high as 20V, independent of VIN.
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Package Information
SOT-143 (M4)
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MIC5203
Package Information (continued)
SOT-23-5 (M5)
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) 1998 Micrel, Incorporated.
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