IMP2014/1 5, IMP2 1 85 POWER MANAGEMENT 60mA/110mA/160mA Super Low Dropout CMOS Regulators with Battery Life Extending Shutdown Mode The IMP2014, IMP2015 and IMP2185 high performance CMOS low dropout voltage regulators offer superior dropout voltage performance and load regulation characteristics as compared to the pin compatible TC1014/1015/1185 devices offered by TelCom Semiconductor. Dropout voltage performance has been improved by up to 40%. Load regulation and power supply PSRR have been optimized. Load regulation is typically 0.32% and PSRR is 53dB at 1kHz. A logic input controlled shutdown mode extends system battery life by reducing quiescent current to 0.2µA maximum. The shutdown mode can be initiated by a system microcontroller. The regulators were designed with ease of use and stability in mind. Stability is guaranteed for 0.47µF and greater load capacitors with an ESR up to 5Ω. Ceramic or tantalum capacitors can be used. Three devices with different guaranteed output current specifications are available: IMP2014 (60mA), IMP2015 (110mA) and IMP2185 (160mA). Each device has output voltage options of 2.5V, 2.7V, 2.85V, 3.0V, 3.3V, 3.6V and 4.0V. Key Features ◆ Pin Compatible with TelCom TC1014/1015/1185 ◆ Lower Dropout Voltage for Long Battery Life – IMP2014: 70mV vs. TelCom TC1014 120mV – IMP2015: 160mV vs. TelCom TC1015 250mV – IMP2185: 250mV vs. TelCom TC1185 400mV ◆ Power Saving Shutdown Mode – 0.2µA shutdown current ◆ Superior Load Regulation – 0.32% ◆ Long Battery Life – 33µA no load ground current ◆ Accurate Output Voltage – ± 2.5% over temperature ◆ Low Drift Output: 40ppm/°C ◆ Guaranteed Minimum Output Current – IMP2014: 60mA – IMP2015: 110mA – IMP2185: 160mA ◆ Over-Current and Over-Temperature Protection ◆ Reference Bypass Input for Low-noise and Improved PSRR ◆ Compact SOT-23A-5 Package Applications ◆ ◆ ◆ ◆ ◆ ◆ ◆ Typical Application 1 + 1µF VIN VOUT IMP2014 IMP2015 IMP2185 BYPASS Shutdown* Control 3 5 Pagers Cellular/GSM/PHS Phones Instrumentation Wireless Terminals Battery Powered Systems Medical Instruments Linear Post-Regulators VOUT 1µF 4 SHDN GND 2 * Tie to VIN if not used. 0.01µF/3.3µF (optional) 2014/15_02.eps 1 IMP2014/1 5, IMP2 1 85 Pin Configuration SOT-23A VIN 1 GND 2 SHDN 3 5 VOUT 4 BYPASS IMP2014/15 IMP2185 2014/15_01.eps Pin Descriptions Pin Number Name Function 1 2 3 VIN GND SHD N 4 BYPASS 5 VOUT Unregulated supply input. Ground terminal. Shutdown control input. A shutdown mode is entered when SHDN is a logic LOW. During shutdown the output voltage falls to 0V and quiescent current drops to 2.0µA. Reference bypass input. A capacitor connected from the BYPASS pin to ground reduces the noise present on the internal reference and enhances PSRR Output voltage 2014/15_t01.eps Ordering Information Part Number* IMP2014-2.5JUK/T IMP2014-2.7JUK/T IMP2014-2.85JUK/T IMP2014-3.0JUK/T IMP2014-3.3JUK/T IMP2014-3.6JUK/T IMP2014-4.0JUK/T IMP2015-2.5JUK/T IMP2015-2.7JUK/T IMP2015-2.85JUK/T IMP2015-3.0JUK/T IMP2015-3.3JUK/T IMP2015-3.6JUK/T IMP2015-4.0JUK/T IMP2185-2.5JUK/T IMP2185-2.7JUK/T IMP2185-2.85JUK/T IMP2185-3.0JUK/T IMP2185-3.3JUK/T IMP2185-3.6JUK/T IMP2185-4.0JUK/T xx = Date Code 2 Package Output Voltage (V) Output Current (mA) 60 2.5 SOT23A-5 SOT23A-5 2.7 60 SOT23A-5 2.85 60 SOT23A-5 3. 0 60 SOT23A-5 3. 3 60 SOT23A-5 3.6 60 SOT23A-5 4.0 60 SOT23A-5 2.5 110 110 2.7 SOT23A-5 SOT23A-5 2.85 110 SOT23A-5 3.0 110 SOT23A-5 3. 3 110 SOT23A-5 3. 6 110 SOT23A-5 4.0 110 SOT23A-5 2.5 160 SOT23A-5 2.7 160 SOT23A-5 2.85 160 SOT23A-5 3.0 160 SOT23A-5 3.3 160 SOT23A-5 3. 6 160 SOT23A-5 4. 0 160 * /T indicates Tape and Reel Shutdown Pin OKAY Adjust Flag Pin Output Reference Bypass Pin Package Marking A B C D M M M M M M M O O O O O O O X X X X X X X A B C D E F G A B C D E F G A B C D E F G x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 2014/15_t03.eps © Daily Silver IMP www.ds-imp.com.cn IMP2014/1 5, IMP2 1 85 Absolute Maximum Ratings Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 7V Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . – 0.3V to VIN + 0.3V Maximum Voltage on Any Pin . . . . . . . . . . . . – 0.3V to (VIN + 0.3V) Shutdown Voltage (SHDN) . . . . . . . . . . . . . . SHDN ≤ VIN + 0.3V These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Operating Junction Temperature Range . . . – 40°C < TJ < 125°C Storage Temperature . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . Internally limited Note: TJ = Junction Temperature, TA = Ambient Temperature Electrical Characteristics VIN = VOUT +1V, IL = 100µA, C L = 1µF, SHDN > VIH , TA = 25°C, unless otherwise noted. Bold/blue specifications apply for junction temperature range –40°C < TJ < 125°C. Parameter Input Voltage Range Maximum Output Current Fixed Output Voltage Dropout Voltage (Note 2) VIN IOMAX VOUT Units 0°C < TJ < 125°C 6.50 V – 40°C < TJ < 125°C 6.50 IMP2014 60 IMP2015 110 IMP2185 160 VR – 2.5% Note 1 mA VR ± 0.5% VR + 2.5% IL = 20mA 17 23 IL = 50mA 60 70 IL = 100mA (IMP2015, IMP2185) 90 160 IL = 150mA (IMP2185) 143 250 No load 33 50 µA SHDN = 0V TJ ≤ 25°C 0.2 2 µA IINSD Thermal Regulation VR + 1V ≤ VIN ≤ 6V mV 40 ppm/°C 0.04 %/W 0.0375 0.35 Notes: 1. VR is the regulated output voltage: 2.5V, 2.7V, 2.85V, 3.0V, 3.3V, 3.6V or 4.0V. 2. Dropout Voltage is defined as the difference between IN and OUT when VR drops 2% below its nominal value. 3. Specifications which would otherwise be affected by self-heating of the die are tested at a constant die temperature by using low duty cycle pulse testing. 3. PSRR guaranteed by design. © Daily Silver IMP V 1 Output Temperature Coefficient Line Regulation T yp VIN - VO IL = 100µA Quiescent Current (Ground Current) Shutdown Supply Current Max Min Symbol Conditions www.ds-imp.com.cn % 2014/15_t02a.eps 3 IMP2014/1 5, IMP2 1 85 Electrical Characteristics VIN = VOUT +1V, IL = 100µA, C L = 1µF, SHDN > VIH , TA = 25°C, unless otherwise noted. Bold/blue specifications apply for junction temperature range of –40°C < TJ < 125°C. Parameter Symbol Conditions Min Typ Max Units IL = 100µA to 50mA 0.11 0.5 % IMP2015 IL = 100µA to 100mA 0.16 1.0 IMP2185 IL = 100µA to 150mA 0.65 1.5 Load Regulation: IMP2014 Thermal Shutdown Die Temperature 150 °C Thermal Shutdown Hysteresis 12 °C Freq. = 1kHz 60 dB Freq. = 10kHz 47 Ripple Rejection Output Noise PSRR VIN ≥ (VO + 1V) ± 0.25V CO = 3.3µF ceramic CBYPASS = 0.01µF Freq. = 1MHz 34 300Hz to 50kHz No bypass capacitor IL = 50mA (IMP2014) IL = 100mA 280 µVRMS 300Hz to 50kHz CBYPASS = 0.01µF IL = 50mA (IMP2014) IL = 100mA 60 µVRMS SHDN Input HIGH Threshold 2.5V ≤ VIN ≤ 6.5V SHDN Input LOW Threshold 2.5V ≤ VIN ≤ 6.5V Reverse Current into VOUT V(IN) < V(OUT) SHDN = HIGH = VIN 2.0 mA V(IN) < V(OUT) SHDN = LOW 2.7 µA Output Current Limit 45 % of VIN 15 350 600 Notes: 1. VR is the regulated output voltage: 2.5V, 2.7V, 2.85V, 3.0V, 3.3V, 3.6V or 4.0V. 2. Dropout Voltage is defined as the difference between IN and OUT when VR drops 2% below its nominal value. 3. Specifications which would otherwise be affected by self-heating of the die are tested at a constant die temperature by using low duty cycle pulse testing. 4. PSRR guaranteed by design. 4 © Daily Silver IMP % of VIN mA 2014/15_t02b.eps www.ds-imp.com.cn IMP2014/1 5, IMP2 1 85 Typical Characteristics Enable 0V ∆VIN = 1V 5V/DIV Output VOUT 50mV/DIV 0V 1V/DIV 20µs/DIV 100µs/DIV 2014/15_12.eps 2014/15_13.eps Figure 1. Line Transient Response Figure 2. Enable Input Response Load Pulse Load Pulse 20mA/DIV 50mA/DIV VOUT VOUT 25mV/DIV 25mV/DIV 50µs/DIV 50µs/DIV 2014/15_09.eps 2014/15_10.eps Figure 3. Load Transient Response (50mA Step) Figure 4. Load Transient Response (100mA Step) 100mA/DIV 100ms/DIV 2014/15_11.eps Figure 5. Output Short Circuit Response © Daily Silver IMP www.ds-imp.com.cn 5 IMP2014/1 5, IMP2 1 85 Application Information The IMP2014, IMP2015 and IMP2185 have been designed to offer exceptionally low dropout voltage, superior load regulation and minimum quiescent power. Shutdown Mode A battery-life-extending mode is available. Through the active LOW shutdown pin, SHDN, the regulator can be enabled or turned off. The regulator is shutdown (turned off) when SHDN is LOW and enabled (turned on) when SHDN is HIGH. The shutdown signal can be supplied from a CMOS gate or from an I/O port of a microcontroller. During shutdown, the output voltage falls to 0V and the supply current is typically only 200nA. If the shutdown mode is not needed, SHDN should be connected directly to the regulator input voltage pin. Reference Voltage Bypass Capacitor For low noise operation a 0.01µF or larger capacitor can be connected from the BYPASS pin to ground. For maximum power supply rejection/line rejection, a 3.3µF value is suggested. The IMP2014/2015/2185 were designed so that line regulation and ripple rejection would be maximized. This was accomplished by powering the internal bandgap reference from an internal regulated source. This "pre-regulation" greatly improves power supply regulation for input voltages greater than that of the internal voltage regulator, 3.5V. Thermal Shutdown An on-chip thermal protection circuit shuts the LDO regulator off when the die temperature exceeds 150°C. There is a built in 12°C hysteresis. The regulator will remain off until the die temperature drops to approximately to 138°C. Output Capacitor The IMP2014, IMP2015 and IMP2185 were designed for stable operation with a wide range of capacitor values and type. The output capacitor should be above 0.47µF. A 1µF value is recommended. Ceramic or tantalum capacitors are suitable with an ESR of up to 5Ω. 6 © Daily Silver IMP www.ds-imp.com.cn IMP2014/1 5, IMP2 1 85 Package Dimensions Plastic SOT-23A (5-Pin) Millimeters Inches Min Nominal 0.037 0.001 0.035 0.011 0.011 0.003 0.003 0.109 0.101 0.058 — — 0.044 — 0.015 — 0.003 0.113 — 0.062 Max Min Nominal Max — — 1.15 — 0.40 — 0.10 2.90 — 1.60 1.45 0.15 1.30 0.50 0.45 0.20 0.16 3.00 3.00 1.70 Plastic SOT-23 (5-Pin)* A A1 A2 b b1 c c1 D E E1 D e1 E1 e A A2 E b C ∅ e 0.037 BSC 0.95 BSC 0.074 BSC 1.90 BSC L1 0.013 L1 L SOT-23 (5-Pin).eps 0.95 0.05 0.90 0.30 0.30 0.08 0.08 2.80 2.60 1.50 e1 L A1 0.057 0.005 0.050 0.019 0.017 0.007 0.062 0.117 0.117 0.066 ∅ 0.017 0.021 0.35 0.002 REF 0° — 0.45 0.55 0.60 REF 8° 0° — 8° * JEDEC Drawing MO-178 ♦ Add /T to Part Number for Tape and Reel. 2014/15_t04.eps Daily Silver IMP Microelectronics Co.,Ltd 7 keda Road , Hi-Tech Park, NingBo,Zhejiang, P.R.C. Post Code : 315040 Tel:(086)-574-87906358 Fax:(086)-574-87908866 e-mail:[email protected] Website:www.ds-imp.com.cn The IMP logo is a registered trademark of Daily Silver IMP. All other company and product names are trademarks of their respective owners. 2005 Daily Silver IMP Revision : A Issue Date: 08/08/05 Type: Product