MIC5203 μCap 80mA Low-Dropout Regulator General Description Features The MIC5203 is a µCap 80mA linear voltage regulator with very low dropout voltage (typically 20mV at light loads and 300mV at 80mA) and very low ground current (225µA at 20mA output), offering better than 3% initial accuracy with a logic-compatible enable input. TheµCap regulator design is optimized to work with lowvalue, low-cost ceramic capacitors. The outputs typically require only 0.47µF 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. • • • • • • • • • • • 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 Shutdown LAxx 1 VOUT 0.47µF SOT-143 Version 5 2 Enable Shutdown 3 VOUT 0.47µF 4 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 Marking Pb-Free Marking Voltage Temperature Range Package MIC5203-2.6BM4 LA26 MIC5203-2.6YM4 LA26 2.6V –40° to +125°C SOT-143 MIC5203-2.8BM4 LA28 MIC5203-2.8YM4 LA28 2.8V –40° to +125°C SOT-143 MIC5203-3.0BM4 LA30 MIC5203-3.0YM4 LA30 3.0V –40° to +125°C SOT-143 MIC5203-3.3BM4 LA33 MIC5203-3.3YM4 LA33 3.3V –40° to +125°C SOT-143 MIC5203-3.6BM4 LA36 MIC5203-3.6YM4 LA36 3.6V –40° to +125°C SOT-143 MIC5203-3.8BM4 LA38 MIC5203-3.8YM4 LA38 3.8V –40° to +125°C SOT-143 MIC5203-4.0BM4 LA40 MIC5203-4.0YM4 LA40 4.0V –40° to +125°C SOT-143 MIC5203-4.5BM4 LA45 MIC5203-4.5YM4 LA45 4.5V –40° to +125°C SOT-143 MIC5203-4.7BM4 LA47 MIC5203-4.7YM4 LA47 4.7V –40° to +125°C SOT-143 MIC5203-5.0BM4 LA50 MIC5203-5.0YM4 LA50 5.0V –40° to +125°C SOT-143 MIC5203-2.6BM5 LK26 MIC5203-2.6YM5 LK26 2.6V –40° to +125°C SOT-23-5 MIC5203-2.8BM5 LK28 MIC5203-2.8YM5 LK28 2.8V –40° to +125°C SOT-23-5 MIC5203-3.0BM5 LK30 MIC5203-3.0YM5 LK30 3.0V –40° to +125°C SOT-23-5 MIC5203-3.3BM5 LK33 MIC5203-3.3YM5 LK33 3.3V –40° to +125°C SOT-23-5 MIC5203-3.6BM5 LK36 MIC5203-3.6YM5 LK36 3.6V –40° to +125°C SOT-23-5 MIC5203-3.8BM5 LK38 MIC5203-3.8YM5 LK38 3.8V –40° to +125°C SOT-23-5 MIC5203-4.0BM5 LK40 MIC5203-4.0YM5 LK40 4.0V –40° to +125°C SOT-23-5 MIC5203-4.5BM5 LK45 MIC5203-4.5YM5 LK45 4.5V –40° to +125°C SOT-23-5 MIC5203-4.7BM5 LK47 MIC5203-4.7YM5 LK47 4.7V –40° to +125°C SOT-23-5 MIC5203-5.0BM5 LK50 MIC5203-5.0YM5 LK50 5.0V –40° to +125°C SOT-23-5 Note: 1. Other Voltage available. Contact Micrel for details. November 2009 2 M9999-111909 Micrel, Inc. MIC5203 Pin Configuration EN GND 2 1 E N GND IN 3 Part Identification LAxx 2 1 LKxx 3 4 4 5 IN OUT NC OUT SOT-143 (M4) SOT-23-5 (M5) Pin Description Pin Number SOT-143 Pin Number SOT-23-5 Pin Name 1 2 GND 2 3 EN Enable (Input): TTL/CMOS compatible control input. Logic high = enabled; logic low or open = shutdown. 3 1 IN Supply input. 4 NC Not internally connected. 5 OUT 4 November 2009 Pin Name Ground. Regulator output. 3 M9999-111909 Micrel, Inc. MIC5203 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ....................................... –20V to +20V Enable Input Voltage (VEN)............................. –20V to +20V Power Dissipation (PD) ..............................Internally Limited Storage Temperature (Ts).........................–60°C to +150°C Lead Temperature (soldering, #sec.)......................... 260°C Input Voltage (VIN)............................................. 2.5V to 16V Enable Input Voltage (VEN)..................................... 0V to VIN Junction Temperature Range ................... –40°C to +125°C Thermal Resistance (θJA) ...........................................Note 3 Electrical Characteristics VIN = VOUT + 1V; IL = 1mA; CL = 0.47μF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted. Symbol Parameter VO Output voltage accuracy ∆VO/∆T Output voltage temperature coefficient Note 4 ∆VO/VO Line regulation VIN = VOUT + 1V to 16V ∆VO/VO Load regulation IL = 0.1mA to 80mA(5) ∆VO – VO IQ IGND Dropout voltage(6) Quiescent current Ground pin current(7) Condition Min Typ –3 3 –4 4 50 200 0.008 0.3 0.5 0.08 0.3 0.5 Units % pm/°C % % IL = 100 μA 20 IL = 20mA 200 IL = 50mA 250 IL = 80mA 300 600 VEN ≤ 0.4V (shutdown) 0.01 10 IL = 100 μA, VEN ≥ 2.0V (active) 180 IL = 20mA, VEN ≥ 2.0V (active) 225 IL = 50mA, VEN ≥ 2.0V (active) 850 IL = 80mA, VEN ≥ 2.0V (active) 1800 3000 200 300 μA 250 mA (7) IGNDDO Ground pin current at dropout VIN = VOUT(nominal) – 0.5V ILIMIT Current limit VOUT = 0V 180 ∆VO/∆PD Thermal regulation Note 8 0.05 November 2009 Max 4 350 750 mV μA μA %/W M9999-111909 Micrel, Inc. MIC5203 Electrical Characteristics (continued) VIN = VOUT + 1V; IL = 1mA; CL = 0.47μF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted. Symbol Parameter Condition Min Typ Max Units Enable Input VIL VIH IIL IIH Enable input voltage level Enable input current 0.6 Logic low (off) Logic high (on) 2.0 VIL ≤ 0.6V 0.01 1 VIH ≥ 2.0V 15 50 V μA 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) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The θJA is 250°C/W for the SOT-143 and 220°C/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. November 2009 5 M9999-111909 Micrel, Inc. MIC5203 Typical Characteristics 2.0 CIN = 10∝F COUT = 1∝F 1.5 1.0 0.5 50 100 150 200 OUTPUT CURRENT (mA) SHORT CIRCUIT CURRENT (mA) OUTPUT VOLTAGE (V) 2.5 Output Voltage vs. Temperature 4.0 CIN = 10∝F COUT = 1∝F 3.8 3.6 3.4 3.2 3 DEVICES HI / AVG / LO 3.0 2.8 CURVES APPLICABLE AT 100∝A AND 50mA 2.4 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( November 2009 GROUND CURRENT (mA) VOUT = 3.3V 1.0 0.5 160 1 2 3 4 5 6 SUPPLY VOLTAGE (V) 7 140 120 100 80 CIN = 10∝F COUT = 1∝F 40 20 0 200 0 1 2 3 4 5 6 INPUT VOLTAGE (V) CIN = 10∝F COUT = 1∝F 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) 160 CIN = 10∝F COUT = 1∝F 120 100 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( 2.5 7 Ground Current vs. Temperature CIN = 10∝F COUT = 1∝F IL = 80mA 2.0 1.5 1.0 IL = 50mA 0.5 IL = 100∝A Thermal Regulation (3.3V Version) 50 0 -50 -2 0 Short Circuit Current vs. Temperature 6 1 60 40 20 0 -20 -40 -60 100 7 180 140 IL = 80mA 0.0 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( Short Circuit Current vs. Input Voltage 60 2 3.0 IL = 50mA IL = 100∝A IL = 100∝A 3 0 Ground Current vs. Supply Voltage 1.5 0.0 0 Output Voltage vs. Output Current 3.0 0.0 0 OUTPUT VOLTAGE (V) 2.0 0 10 20 30 40 50 60 70 80 OUTPUT CURRENT (mA) 3.5 2.6 0 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( OUTPUT (mV) VIN = VOUT + 1V IL = 100∝A IL = 1mA LOAD (mA) 500 4.0 100 Ground Current vs. Output Current 1000 0 200 0.1 1 10 100 OUTPUT CURRENT (mA) 1500 CIN = 10∝F COUT = 1∝F IL = 80mA GROUND CURRENT (mA) 2000 300 Dropout Characteristics 4 3.5 MIN. SUPPLY VOLTAGE (V) 10 1 0.01 GROUND CURRENT (∝A) DROPOUT VOLTAGE (mV) 100 OUTPUT CURRENT (mA) DROPOUT VOLTAGE (mV) CIN = 10∝F COUT = 1∝F Dropout Voltage vs. Temperature 400 OUTPUT VOLTAGE (V) Dropout Voltage vs. Output Current 1000 CL = 1∝F 2 4 6 8 10 12 14 16 TIME (ms) Minimum Supply Voltage vs. Temperature IL = 1mA VOUT = 3.3V 3.4 CIN = 10∝F COUT = 1∝F 3.3 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( M9999-111909 Micrel, Inc. MIC5203 2 -0.2 0.0 0.2 0.4 0.6 TIME (ms) 0.8 20 0 1.0 INPUT (V) IL = 100∝A CL = 1∝F VIN = VOUT + 1 80 60 40 0 FREQUENCY (Hz) 2 0 November 2009 2 4 6 TIME (∝s) 8 OUTPUT (V) ENABLE (V) 1x106 100x103 10x103 Enable Characteristics (3.3V Version) CL = 1∝F IL = 100∝A 2 0 -2 -0.2 0.0 10 Enable Voltage vs. Temperature CIN = 10∝F COUT = 1∝F IL = 1mA 1.25 1.00 VON VOFF 0.75 0.50 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( 7 40 ENABLE CURRENT (∝A) ENABLE VOLTAGE (mV) OUTPUT (V) ENABLE (V) 1.50 CL = 1∝F IL = 100∝A 0 5 4 3 2 1 0 4 -1 0.2 0.4 0.6 TIME (ms) 0.8 1.0 FREQUENCY (Hz) Enable Characteristics (3.3V Version) -2 -2 IL = 100mA 0.1 FREQUENCY (Hz) 4.0 3.0 2.0 1.0 0.0 4 -1.0 IL = 1mA 1 0.01 1x106 100x103 10x100 0 10x103 20 1x103 IL = 50mA CL = 1∝F VIN = VOUT + 1 1x100 40 10 IL = 100∝A 1x103 60 100 Output Impedance 100x100 OUTPUT IMPEDANCE ( ) 80 100x100 RIPPLE VOLTAGE (dB) 1000 10x100 Ripple Voltage vs. Frequency IL = 1mA CL = 1∝F VIN = VOUT + 1 20 FREQUENCY (Hz) 100 1.0 1x106 4 40 0.8 Ripple Voltage vs. Frequency 100 60 0.2 0.4 0.6 TIME (ms) 100x103 6 Ripple Voltage vs. Frequency 80 10x100 INPUT (V) -1 8 2 -0.2 0.0 20 10x103 0 15 4 1x103 CL = 11∝F IL = 1mA 1 5 10 TIME (ms) 6 100x100 100 0 CL = 1∝F IL = 1mA 10x10 8 Line Transient 3 2 1 0 -1 8 -2 0 6 7 Line Transient 2 OUTPUT (V) 2 3 4 5 TIME (ms) RIPPLE VOLTAGE (dB) 1 1x106 -50 -1 0 0 -50 -5 100x103 0 50 10x103 50 COUT = 10∝F VIN = VOUT + 1 -100 100 -200 OUTPUT (mA) OUTPUT (mA) -400 100 0 1x103 COUT = 1∝F VIN = VOUT + 1 -200 Load Transient 100x100 0 100 OUTPUT (V) OUTPUT (mV) Load Transient 200 RIPPLE VOLTAGE (dB) OUTPUT (mV) Typical Characteristics (continued) Enable Current vs. Temperature CIN = 10∝F COUT = 1∝F IL = 1mA 30 20 10 VEN = 5V VEN = 2V 0 -60 -30 0 30 60 90 120 150 TEMPERATURE °C) ( M9999-111909 Micrel, Inc. MIC5203 Applications Information Input Capacitor A 0.1µF 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. 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. Output Capacitor Typical PNP based regulators require an output capacitor to prevent oscillation. The MIC5203 is ultrastable, requiring only 0.47µF 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 –30°C. Tantalum or ceramic capacitors are recommended for operation below –25°C. 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 15µA. While the logic threshold is TTL/CMOS compatible, EN may be pulled as high as 20V, independent of VIN. November 2009 8 M9999-111909 Micrel, Inc. MIC5203 Package Information SOT-143 (M4) November 2009 9 M9999-111909 Micrel, Inc. 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. © 1998 Micrel, Incorporated. November 2009 10 M9999-111909