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Rev.1.2 Seiko Instruments Inc. 1 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Note : Please consider power dissipation of the package when the output current is large. Package /G79 5-pin SOT-23-5 (Package drawing code: MP005-A) /G79 5-pin SOT-89-5 (Package drawing code: UP005-A) The S-818 Series is a positive voltage regulator developed utilizing CMOS technology featured by low dropout voltage, high output voltage accuracy and low current consumption. Built-in low on-resistance transistor provides low dropout voltage and large output current. A ceramic capacitor of 2 µF or more can be used as an output capacitor. A power-OFF circuit ensures long battery life. The SOT-23-5 miniaturized package and the SOT-89-5 package are recommended for configuring portable devices and large output current applications, respectively. Applications /G79 Power source for battery-powered devices /G79 Power source for personal communication devices /G79 Power source for home electric/electronic appliances Features /G79 Low current consumption During operation: Typ. 30 µA, Max. 40 µA During power off: Typ. 100 nA, Max. 500 nA /G79 Output voltage: 0.1 V steps between 2.0 and 6.0 V /G79 High accuracy output voltage: ±2.0% /G79 Peak output current; 200 mA capable (3.0 V output product, V IN=4 V) Note 300 mA capable (5.0 V output product, VIN=6 V) Note /G79 Low dropout voltage Typ. 170 mV (5.0 V output product, IOUT = 60 mA) A ceramic capacitor (2 µF or more) can be used as an output capacitor. /G79 Built-in power-off circuit /G79 Compact package: SOT-23-5, SOT-89-5
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 2 Seiko Instruments Inc. Block Diagram Reference voltage VOUT ON/OFF VSS VIN *1: Parasitic diode ON/OFF circuit Figure 1 Block Diagram Selection Guide 1. Product Name S-818x xx A xx - xxx - T2 IC orientation in taping specifications Product abbreviation Package type MC : SOT-23-5 UC : A: ON/OFF pin has positive logic (high active) B: ON/OFF pin has negative logic (low active) SOT-89-5 Product type Output voltage x 10 Table 1 Selection Guide Output Voltage SOT-23-5 SOT-89-5 2.0 V ± 2.0% S-818A20AMC-BGA-T2 S-818A20AUC-BGA-T2 2.5 V ± 2.0% S-818A25AMC-BGF-T2 S-818A25AUC-BGF-T2 2.8 V ± 2.0% S-818A28AMC-BGI-T2 S-818A28AUC-BGI-T2 3.0 V ± 2.0% S-818A30AMC-BGK-T2 S-818A30AUC-BGK-T2 3.3 V ± 2.0% S-818A33AMC-BGN-T2 S-818A33AUC-BGN-T2 3.8 V ± 2.0% S-818A38AMC-BGS-T2 S-818A38AUC-BGS-T2 4.0 V ± 2.0% S-818A40AMC-BGU-T2 S-818A40AUC-BGU-T2 5.0 V ± 2.0% S-818A50AMC-BHE-T2 S-818A50AUC-BHE-T2 Note: Contact SII sales division for product with an output voltage other than those specified above or product type B, low active product.
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 3 Pin Configuration Please refer to the package drawings at the end of this document for details. Table 2 Pin Assignment Table 3 Pin Assignment Note: NC means electrical open. Connecting NC pin to VIN or VSS is allowed. Absolute Maximum Ratings Table 4 Absolute Maximum Ratings (Ta=25°C unless otherwise specified) Parameter Symbol Absolute Maximum Rating Unit Input voltage V IN 12 V VON / OFF VSS -0.3 to 12 V Output voltage V OUT VSS -0.3 to VIN+0.3 V Power dissipation P D 250 (SOT-23-5) 500 (SOT-89-5) mW Operating temperature range Tope -40 to +85 °C Storage temperature range Tstg -40 to +125 °C The IC has a protection circuit against static electricity. DO NOT apply high static electricity or high voltage that exceeds the performance of the protection circuit to the IC. Pin No. S ymbol Description 1V I N Voltage input pin
2 VSS GND pin
3 ON/OFF Power off pin
5 VOUT Voltage output pin
Pin No. S ymbol Description
1 VOUT Voltage output pin
4 ON/OFF Power off pin
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 4 Seiko Instruments Inc. Electrical Characteristics S-818AXXAMC/UC, S-818BXXAMC/UC Table 5 Electrical Characteristics (Ta=25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Units Test circuit s Output voltage *1) VOUT (E) VIN=V OUT (S)+1V,IOUT =30mA V OUT (S) ×0.98 VOUT (S) VOUT (S) ×1.02 Output current *2) IOUT VOUT (S)+1V 2.0V ≤VOUT (S) ≤2.4V 100 *5) −− mA 3 ≤ VIN≤10V 2.5V ≤VOUT (S) ≤2.9V 150 *5) −− mA 3 3.0V ≤VOUT (S) ≤3.9V 200 *5) −− mA 3 4.0V ≤VOUT (S) ≤4.9V 250 *5) −− mA 3 5.0V ≤VOUT (S) ≤6.0V 300 *5) −− mA 3 Dropout voltage *3) Vdrop I OUT = 2.0V ≤VOUT (S) ≤2.4V − 0.51 0.87 V 1 60mA 2.5V ≤VOUT (S) ≤2.9V − 0.38 0.61 V 1 3.0V ≤VOUT (S) ≤3.4V − 0.30 0.44 V 1 3.5V ≤VOUT (S) ≤3.9V − 0.24 0.33 V 1 4.0V ≤VOUT (S) ≤4.4V − 0.20 0.26 V 1 4.5V ≤VOUT (S) ≤4.9V − 0.18 0.22 V 1 5.0V ≤VOUT (S) ≤5.4V − 0.17 0.21 V 1 5.5V ≤VOUT (S) ≤6.0V − 0.17 0.20 V 1 Line regulation 1 ΔVOUT 1 1 ΔVIN • VOUT VOUT (S) + 0.5 V ≤ VIN ≤ 10 V, IOUT = 30mA 0.05 0.2 %/V 1 Line regulation 2 ΔVOUT 2 1 ΔVIN • VOUT VOUT (S) + 0.5 V ≤ VIN ≤ 10 V, IOUT = 10µA 0.05 0.2 %/V 1 Load regulation ΔVOUT 3V IN = VOUT (S) + 1 V, 10µA ≤ IOUT ≤ 80mA 30 50 mV 1 Output voltage temperature coefficient *4) ΔVOUT 1 ΔTa • VOUT VIN = VOUT (S) + 1 V, IOUT = 30mA -40°C ≤ Ta ≤ 85°C ±100 ppm /°C Current consumption during operation ISS 1V IN = VOUT (S) + 1 V, ON/OFF pin = ON, no load 30 40 µA2 Current consumption when power off ISS 2V IN = VOUT (S) + 1 V, ON/OFF pin = OFF, no load 0.1 0.5 µA2 Input voltage V IN 10 V 1 Power-off pin input voltage "H" VSH VIN = VOUT (S) + 1 V, RL = 1kΩ , Judged by VOUT output level. 1.5 V4 Power-off pin input voltage "L" VSL VIN = VOUT (S) + 1 V, RL = 1kΩ , Judged by VOUT output level. 0.3 V 4 Power-off pin input current "H" ISH VIN = VOUT (S) + 1 V, ON/OFF = 7 V 0.1 µA4 Power-off pin input current "L" ISL VIN = VOUT (S) + 1 V, ON/OFF = 0 V -0.1 µA4 Ripple rejection RR VIN = VOUT (S) + 1 V, f = 100Hz, ΔVrip = 0.5 V p-p, IOUT =30mA 45 dB 5 *1) VOUT (S)=Specified output voltage VOUT (E)=Effective output voltage, i.e., the output voltage at fixet IOUT (=30 mA) and input VOUT (S)+1.0 V. *2) Output current when the output voltage goes below 95% of VOUT (E) after gradually increasing output current. *3) Vdrop = VIN1-(VOUT (E) × 0.98) VIN1 = Input voltage when output voltage falls 98% of VOUT (E) after gradually decreasing input voltage. *4) Output voltage shift by temperature [mV/°C] is calculated using the following equation. *5) Peak output current can exceed the minimum value. ΔVOUT [ppm/°C] ÷1000[mV/°C] = VOUT (S)[V] ×ΔTa ΔVOUT ΔTa • VOUT Specified output voltage Output voltage temperature coefficientOutput voltage shift by temperature
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 6 Seiko Instruments Inc. Technical Terms 1. Low dropout voltage regulator The low dropout voltage regulator is a voltage regulator having a low dropout voltage characteristic due to the internal low on-resistance transistor. 2. Output voltage (V OUT ) The accuracy of the output voltage is ensured at ± 2.0% under the specified conditions of input voltage, output current, and temperature, which differ product by product. Note: When the above conditions are changed, the output voltage may vary and go out of the accuracy range of the output voltage. See the electrical characteristics and characteristic data for details. 3. Line regulations 1 and 2 (ΔV OUT 1, ΔVOUT 2) Line regulation indicates the input voltage dependence of the output voltage. The value shows how much the output voltage changes due to the change of the input voltage when the output current is kept constant. 4. Load regulation (ΔV OUT 3) Load regulation indicates the output current dependence of output voltage. The value shows how much the output voltage changes due to the change of the output current when the input voltage is kept constant. 5. Dropout voltage (Vdrop) Let V IN1 be an input voltage where the output voltage falls to the 98% of the actual output voltage VOUT (E) when gradually decreasing input voltage. The dropout voltage is the difference between the VIN1 and the resultant output voltage defined as following equation. Vdrop = V IN1-[VOUT (E) × 0.98] 6. Temperature coefficient of output voltage [ΔVOUT /(ΔTa • VOUT )] The shadowed area in Figure 6 is the range where VOUT varies in the operating temperature range when the temperature coefficient of the output voltage is ±100 ppm/°C. -40 25 +0.28mV/°C VOUT [V] VOUT (E) is a mesured value of output voltage at 25°C. O UT (E)
85 Ta [°C ]
-0.28mV/°C Figure 6 Temperature coefficient range of output voltage A change of output voltage in temperature [mV/°C] is calculated using the following equation. ΔVOUT [ppm/°C] ÷1000[mV/°C] = VOUT (S)[V] ×ΔTa ΔVOUT ΔTa • VOUT Specified output voltage Output voltage temperature coefficient Change of output voltage in temperatures Typical Example of the S-818A28A
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 8 Seiko Instruments Inc. Selection of Output Capacitor (CL) The S-818 series needs an output capacitor between VOUT pin and VSS pin for phase compensation. A small ceramic or an OS electrolytic capacitor of 2 µF or more can be used. If a tantalum or an aluminum electrolytic capacitor is used, its capacitance must be 2 µF or more and the ESR must be 10 Ω or less. Attention should be paid not to cause an oscillation due to increase of ESR at low temperatures when using an aluminum electrolytic capacitor. Evaluate the performance including temperature characteristics before prototyping the circuit. Overshoot and undershoot characteristics differ depending upon the type of the output capacitor. Refer to output capacitor dependence data in transient response characteristics . Design Considerations
- Design wiring patterns for VIN, VOUT and GND pins to decrease impedance. When mounting an output capacitor, connection from the capacitor to the VOUT pin and to the VSS pin should be as close as possible.
- Note that output voltage may increase when the voltage regulator is used at low load current (less than 10 µA).
- To prevent oscillation, it is recommended to use the external components under the following conditions: * Input capacitor (CIN): 0.47 µF or more * Output capacitor (CL): 2 µF or more * Equivalent Series Resistance (ESR): 10 Ω or less * Input series resistance (RIN): 10 Ω or less
- The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or not connected.
- Be sure that input voltage and load current do not exceed the power dissipation level of the package.
- SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of the products including this IC upon patents owned by a third party.
- In determining necessary output current, consider the value of output current of Table 4 “Electrical Characteristics” and Note *5) (page 4).
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 9 Typical Characteristics (Typical Data) (1) OUTPUT VOLTAGE vs. OUTPUT CURRENT (When load current increases) S-818A20A(Ta=25°C) 0.0 1.0 2.0 0 0.2 0.4 0.6 0.8 IOUT (A) VOUT (V) VIN=2.3V 4V 5V 10V 2.5V S-818A30A(Ta=25°C) 0.0 1.0 2.0 3.0 0 0.2 0.4 0.6 0.8 6V4V 10V 3.5V IOUT (A) VOUT (V) VIN=3.3V S-818A50A(Ta=25°C) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 0.2 0.4 0.6 0.8 10V 5.5V IOUT (A) VOUT (V) VIN=5.3V (2) OUTPUT VOLTAGE vs. INPUT VOLTAGE S-818A20A (Ta=25°C) 1.0 1.5 2.0 2.5 1234 V/G29/G2E (V) V (V) 60mA Iout=10uA 1mA 30mA 100uA S-818A30A (Ta=25°C) 1.5 2.0 2.5 3.0 3.5 2345 V/G29/G2E (V) V (V) 30mA 60mA Iout=10uA 1mA 100uA S-818A50A (Ta=25°C) 4.0 4.5 5.0 5.5 4567 V/G29/G2E (V) V (V) 30mA 60mA 1mA Iout=10uA 100uA * In determining necessary output current, consider the following parameters:
- Minimum value of output current in Table 4 “Electrical Characteristics” and Note *5) (page 4);
- Power dissipation of the package
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 10 Seiko Instruments Inc. (3) MAXIMUM OUTPUT CURRENT vs. INPUT VOLTAGE S-818A20A 0.0 0.2 0.4 0.6 0.8 02468 1 0 Ta=-40°C 85°C 25°C VIN(V) IOUT max(A) S-818A30A 0.0 0.2 0.4 0.6 0.8 02468 1 0 Ta=-40°C 85°C 25°C VIN(V) IOUT max(A) S-818A50A 0.0 0.2 0.4 0.6 0.8 02468 1 0 Ta=-40°C 85°C 25°C VIN(V) IOUT max(A) (4) DROPOUT VOLTAGE vs. OUTPUT CURRENT S-818A20A 500 1000 1500 2000 0 50 100 150 200 250 300 I/G2F/G35 /G34 (mA) Vdrop(mV) Ta=-40°C 25°C 85°C S-818A30A 500 1000 1500 2000 0 100 200 300 400 I/G2F/G35 /G34 (mA) Vdrop(mV) Ta=-40°C 25°C 85°C S-818A50A 500 1000 1500 2000 0 100 200 300 400 500 600 I/G2F/G35 /G34 (mA) Vdrop(mV) Ta=-40°C 25°C 85°C * In determining necessary output current, consider the following parameters:
- Minimum value of output current in Table 4 “Electrical Characteristics” and Note *5) (page 4);
- Power dissipation of the package
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 11 (5) OUTPUT VOLTAGE TEMPERATURE DEPENDENCE S-818A20A 1.96 1.98 2.00 2.02 2.04 -50 0 50 100 Ta(°C) VOUT (V) VIN=3V, IOUT =30mA S-818A30A 2.94 2.97 3.00 3.03 3.06 -50 0 50 100 Ta(°C) VOUT (V) VIN=4V, IOUT =30mA S-818A50A 4.90 4.95 5.00 5.05 5.10 -50 0 50 100 Ta(°C) VOUT (V) VIN=6V, IOUT =30mA (6) LINE REGULATION TEMPERATURE DEPENDENCE S-818A20/30/50A - 5 005 0 1 0 0 Ta(°C) V 1(mV) V/G2F/G35/G34 =2V 5V3V V/G29/G2E =V/G2F/G35/G34 (S)+0.5↔ 10V,I/G2F/G35/G34 =30mA (7) LOAD REGULATION TEMPERATURE DEPENDENCE S-818A20/30/50A - 5 005 0 1 0 0 Ta(°C) V 3(mV) V/G2F/G35/G34 =2V V/G29/G2E =V/G2F/G35/G34 (S)+1V,I/G2F/G35/G34 =10uA↔ 80mA
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 12 Seiko Instruments Inc. (8) CURRENTCONSUMPTION vs. INPUT VOLTAGE S-818A20A 02468 1 0 V/G29/G2E (V) I 1(uA) Ta=-40°C 85°C 25°C S-818A30A 02468 1 0 V/G29/G2E (V) I 1(uA) Ta=-40°C 85°C 25°C S-818A50A 02468 1 0 V/G29/G2E (V) I 1(uA) Ta=-40°C 85°C 25°C (9) THRESHOLD VOLTAGE OF POWER OFF PIN vs. INPUT VOLTAGE S-818A20A 0.0 0.5 1.0 1.5 2.0 2.5 2468 1 0 VSH /VSL(V) VSH VSL VIN(V) S-818A30A 0.0 0.5 1.0 1.5 2.0 2.5 3578 1 0 VSH /VSL(V) VSH VSL VIN(V) S-818A50A 0.0 0.5 1.0 1.5 2.0 2.5 5689 1 0 VSH /VSL(V) VSH VSL VIN(V)
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 13 (10) RIPPLE REDUCTION RATE VIN=3V IOUT =30mA C IN= NoneCOUT =2µF 0.5Vp-p Ta=25°C -100 -80 -60 -40 -20 0.1 1 10 100 f (kHz) Gain (dB) S-818A20A VIN=4V IOUT =30mA C IN=None COUT =2µF 0.5Vp-p Ta=25°C -100 -80 -60 -40 -20 0.1 1 10 100 f (kHz) Gain (dB) S-818A30A VIN=6V IOUT =30mA C IN= NoneCOUT =2µF 0.5Vp-p Ta=25°C -100 -80 -60 -40 -20 0.1 1 10 100 f (kHz) Gain (dB) S-818A50A
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 14 Seiko Instruments Inc. TRANSIENT RESPONSE CHARACTERISTICS (S-818A30A, Typical data: Ta=25°C) Overshoot INPUT VOLTAGE OUTPUT VOLTAGE or LOAD CURRENT Undershoot (1) Power on V IN=0→ 10V IOUT =30mA TIME(50usec/div) VOUT (0.5V/div) 10V CL=2 µF VIN VOUT CL=4.7µF Load dependence of overshoot Output capacitor (CL) dependence of overshoot 0.0 0.2 0.4 0.6 0.8 1.0 IOUT (A) Over Shoot(V) V IN=0→ VOUT (S)+1V, CL=2µF VOUT =2V 0.0 0.2 0.4 0.6 0.8 1.0 1 10 100 CL(µF) Over Shoot(V) VIN=0→ VOUT (S)+1V, IOUT =30mA VOUT =2V VDD dependence of overshoot Temperature dependence of overshoot 0.0 0.2 0.4 0.6 0.8 1.0 02468 1 0 VDD(V) Over Shoot(V) VOUT =2V VIN=0→ VDD, IOUT =30mA,CL=2 µF 0.0 0.2 0.4 0.6 0.8 1.0 -50 0 50 100 Ta(°C/G09 Over Shoot(V) 5V3V VIN=0→ V/G2F/G35/G34 (S)+1V, IOUT =30mA,CL=2 µF VOUT =2V REFERENCE DATA
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 15 (2) Power on/off control V IN=10V ON/OFF=0 → 10V IOUT =30mA TIME(50usec/div) VOUT (0.5V/div) 10V CL=4.7µF CL=2 µF VIN VOUT Load dependence of overshoot Output capacitor (CL) dependence of overshoot 0.0 0.2 0.4 0.6 0.8 1.0 I OUT (A) Over Shoot(V) VOUT =2V V IN=V OUT (S)+1V , CL=2µF, ON/OFF=0→ V OUT (S)+1V 0.0 0.2 0.4 0.6 0.8 1.0 1 10 100 CL(uF) Over Shoot(V) V IN=V OUT (S)+1V IOUT =30mA, ON/OFF=0→ V OUT (S)+1V VOUT =2V VDD dependence of overshoot Temperature dependence of overshoot 0.0 0.2 0.4 0.6 0.8 1.0 02468 1 0 VDD(V) Over Shoot(V) V IN=VDD ,IOUT =30mA, CL=2µF, ON/OFF=0→ VD D VOUT =2V 0.0 0.2 0.4 0.6 0.8 1.0 - 5 005 0 1 0 0 Ta /G08 °C/G09 Over Shoot(V) 5V3V V IN=V OUT (S)+1V ,IOUT =30mA, CL=2µF, ON/OFF=0→ V OUT (S)+1V VOUT =2V
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 16 Seiko Instruments Inc. (3) Power fluctuation V IN=4→ 10V IOUT =30mA TIME(50usec/div) VOUT (0.2V/div) 10V CL=4.7µF CL=2 µF VIN V OU T TIME(50usec/div) V OUT (0.2V/div) 10V CL=4.7µF CL=2 µF V IN VOUT V IN=10→ 4V IOUT =30mA Load dependence of overshoot Output capacitor (CL) dependence of overshoot 0.2 0.4 0.6 IOUT (A) Over Shoot(V) VIN=V OUT (S)+1V→ VOUT (S)+2V,CL=2µF VOUT =2V 0.01 0.02 0.03 0.04 0.05 1 10 100 CL(uF) Over Shoot(V) VIN=V OUT (S)+1V→ V OUT (S)+2V, IOUT =30mA VOUT =2V VDD dependence of overshoot Temperature dependence of overshoot 0.2 0.4 0.6 02468 1 0 VDD(V) Over Shoot(V) V IN=V OUT (S)+1V → VDD, IOUT =30mA,CL=2 µF VOUT =2V 0.01 0.02 0.03 0.04 0.05 0.06 -50 0 50 100 Ta/G08 °C/G09 Over Shoot(V) VIN=VOUT (S)+1V→ VOUT (S)+2V, IOUT =30mA,CL=2 µF VOUT =2V
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 17 Load dependence of undershoot Output capacitor (CL) dependence of undershoot 0.1 0.2 0.3 IOUT (A) Under Shoot(V) VOUT =2V VIN=V OUT (S)+2V→ VOUT (S)+1V,CL=2µF 0.01 0.02 0.03 0.04 0.05 1 10 100 CL(uF) Under Shoot(V)5V VIN=V OUT (S)+2V→ VOUT (S)+1V ,IOUT =30mA VOUT =2V VDD dependence of undershoot Temperature dependence of undershoot 0.05 0.1 0.15 0.2 02468 1 0 VDD(V) Under Shoot(V) VIN=VDD → VOUT (S)+1V, IOUT =30mA,CL=2 µF VOUT =2V 0.01 0.02 0.03 0.04 0.05 0.06 -50 0 50 100 Ta(°C) Under Shoot(V) 5V VIN=VOUT (S)+2V→ VOUT (S)+1V, IOUT =30mA ,CL=2µF VOUT =2V
LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.2 S-818 Series 18 Seiko Instruments Inc. (4) Load fluctuation IOUT =10µA → 30mA V IN=4V TIME(50µsec/div ) VOUT (0.2V/div) 30mA CL=4.7µF CL=2 µF 10µA IOUT VOUT IOUT =30mA → 10µA VIN=4V TIME(20msec/div ) VOUT (0.1V/div) 30m A CL=4.7µF CL=2 µF 10µA IOUT V OUT Load current dependence of load fluctuation overshoot ΔIOUT shows larger load current at load current fluctuation while smaller current is fixed to 10 µA. For example ΔI OUT =1.E-02 (A) means load current fluctuation from 10 mA to 10 µA. Output capacitor (CL) dependence of overshoot 0.0 0.2 0.4 0.6 0.8 1.0 ΔIOUT (A) Over Shoot(V) VOUT =2V VIN=V OUT (S)+1V,CL=2µF 0.05 0.1 0.15 0.2 1 10 100 CL(uF) Over Shoot(V)5V VOUT =2V VIN=V OUT (S)+1V ,IOUT =30mA → 10µA VDD dependence of overshoot Temperature dependence of overshoot 0.1 0.2 0.3 02468 1 0 VDD(V) Over Shoot(V) VOUT =2V VIN=VDD, IOUT =30mA → 10µA ,CL=2µF 0.05 0.1 0.15 0.2 0.25 0.3 -50 0 50 100 Ta(°C) Over Shoot(V) 5V VIN=V OUT (S)+1V ,IOUT =30mA → 10µA,CL=2 µF VOUT =2V
Rev.1.2 LOW DROPOUT CMOS VOLTAGE REGULATOR S-818 Series Seiko Instruments Inc. 19 Load current dependence of load fluctuation undershoot ΔIOUT shows larger load current at load current fluctuation while smaller current is fixed to 10 µA. For example ΔI OUT =1.E-02 (A) means load current fluctuation from 10 µA to 10 mA. Output capacitor (CL) dependence of undershoot 0.0 0.2 0.4 0.6 0.8 1.0 ΔIOUT (A) Under Shoot(V) 5V3V VOUT =2V VIN=V OUT (S)+1V,CL=2 µF 0.1 0.2 0.3 0.4 1 10 100 CL(uF) Under Shoot(V)5V VIN=V OUT (S)+1V ,IOUT =10µA→ 30mA VOUT =2V VDD dependence of undershoot Temperature dependence of undershoot 0.1 0.2 0.3 0.4 02468 1 0 VDD(V) Under Shoot(V) 5V V IN=VDD, IOUT =10µA→ 30mA,CL=2 µF VOUT =2V 0.1 0.2 0.3 0.4 0.5 -50 0 50 100 Ta(°C) Under Shoot(V) 5V VIN=V OUT (S)+1V ,IOUT =10µA→ 30mA ,CL=2µF VOUT =2V
3.25–0.15 ł1.5 +0.1 ł1.0 +0.1 4.0–0.1 2.0–0.05 0.27–0.05 1.4–0.2 Feed direction SOT-23-5 MP005-A 991105 0.95 0.1 2.9–0.2 +0.1 -0.060.16 1.9–0.2 0.4–0.1 12 3 21–0.5 2–0.2 (60°)(60°) f13–0.2 12.5max. 9.0–0.3 +0.2 -0.32.81.6 1.1–0.1 0.45 1.3max 3 max. 3 max. Taping Specifications Reel Specifications Dimensions Unit mm 3000 pcs./reel
ł21–0.5 ł13–0.2 2–0.2 ł1.5+0.1 2.0–0.1 0.3–0.05 4.0–0.1(10 pitches 40–0.2) 8.0–0.1 2.0–0.05 ł1.5+0.1 4.75–0.1 Feed direction Taping Specifications Reel Specifications 1.5–0.1 1.5–0.1 1.6–0.2 4.5–0.1 13 2 1.5–0.1 0.4–0.05 0.4–0.1 0.45–0.1 0.4–0.1 45 0.3 SOT-89-5 Dimensions UP005-A 990531 Unit mm 3 max. 5 max. 1 reel holds 1000 ICs.
- The information herein is subject to change without notice.
- Seiko Instruments Inc. is not responsible for any problems caused by circuits or other diagrams described herein whose industrial properties, patents or other rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarantee any mass-production design.
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