AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Description Pin Assignments NEW PRODUCT The AP7312 is 150mA, dual fixed output voltage, low dropout linear regulator. The AP7312 include the pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry which protect the IC from damage in fault conditions. The AP7312 has two enable pins (EN1 and EN2) to independently turn the respective channel on when a logic high level is applied. (Top View) OUT2 1 6 OUT1 GND 2 The characteristics of low dropout voltage and low quiescent current make it suitable for low power applications. The typical quiescent current is approximately 60μA. 5 IN EN2 3 4 EN1 This device is available with fixed output options of 1.2V/1.8V, 1.2V/3.3V, 1.5V/2.5V, 1.5V/3.3V, 1.8V/2.8V, 1.8V/3.0V, 1.8V/3.3V and 3.3V/3.3V. For other output options please contact our local sales representative directly or through our distributor located in your area. SOT26 (Top View) The AP7312 is available in SOT26 and DFN2018-6 packages. Features • • • • • • • • • • • • • • • 150mA Low Dropout Regulator with EN Very low IQ: 60µA Wide input voltage range: 2V to 6V Fixed output options: 1.2V to 3.3V High PSRR: 65dB at 1kHz Fast start-up time: 60µs Stable with low ESR, 1µF ceramic output capacitor Excellent Load/Line Transient Response Low dropout: 150mV at 150mA Current limit protection Short circuit protection Thermal shutdown protection Ambient temperature range: -40ºC to 85°C SOT26 and DFN2018-6: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) Note: IN 1 6 OUT1 EN1 2 5 OUT2 EN2 3 4 GND DFN2018-6 Applications • • • • • Cellular Phones Smart Phones, PDAs MP3/MP4 Bluetooth head set Low power application 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. AP7312 Document number: DS35133 Rev. 1 - 2 1 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Application Circuit VIN VOUT1 VIN VOUT1 1uF VOUT2 1uF EN1 VOUT2 ON NEW PRODUCT OFF 1uF EN2 GND ON OFF Pin Descriptions Pin Name OUT2 GND EN2 EN1 IN OUT1 Pin Number SOT26 DFN2018-6 1 2 3 4 5 6 5 4 3 2 1 6 AP7312 Document number: DS35133 Rev. 1 - 2 Description Voltage output 2. Bypass to ground through 1µF ceramic capacitor Ground Enable input 2, active high Enable input 1, active high Voltage input. Bypass to ground through at least 1µF capacitor Voltage output 1. Bypass to ground through 1µF ceramic capacitor 2 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Functional Block Diagram OUT 1 IN Gate Driver NEW PRODUCT EN 1 Current Limit and Short Circuit Bandgap Thermal Shutdown EN 2 GND Gate Driver Current Limit and Short Circuit OUT 2 AP7312 Document number: DS35133 Rev. 1 - 2 3 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Absolute Maximum Ratings Symbol Parameter ESD HBM Human Body Model ESD Protection ESD MM Machine Model ESD Protection VIN Input Voltage OUT, EN Voltage NEW PRODUCT Continuous Load Current Ratings Unit 8 kV 400 V 6.5 V VIN + 0.3 V Internal Limited TOP Operating Junction Temperature Range -40 ~ 125 °C TST Storage Temperature Range -65 ~150 °C PD Power Dissipation (Note 3) TJ Maximum Junction Temperature SOT26 950 mW DFN2018-6 2200 mW 150 °C Recommended Operating Conditions Symbol VIN IOUT TA Notes: Parameter Input voltage Output Current (Note 3) Operating Ambient Temperature Min Max Unit 2 0 -40 6 150 85 V mA °C 2. Ratings apply to ambient temperature at 25°C. 3. The device maintains a stable, regulated output voltage without a load current. AP7312 Document number: DS35133 Rev. 1 - 2 4 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Electrical Characteristics NEW PRODUCT o (TA = 25 C, VIN = VOUT +1V, CIN = 1uF, COUT = 1uF, VEN = VIN, unless otherwise stated) Symbol Parameter Test Conditions ADJ Reference Voltage IOUT= 0mA VREF (Adjustable version) ADJ Leakage (Adjustable version) IADJ o o TA = -40 C to 85 C, Output Voltage Accuracy VOUT IOUT = 10% of IOUT-Max VIN = (VOUT +1V) to VIN-Max, ΔVOUT /ΔVIN/V Line Regulation VEN = VIN, IOUT = 1mA VIN = (VOUT +1V) to VIN-Max, ΔVOUT /VOUT Load Regulation IOUT = 1mA to 150mA VOUT < 2.5V, IOUT = 150mA Dropout Voltage (Note 4) VDropout VOUT ≥ 2.5V, IOUT = 150mA Input Quiescent Current (2 channels) VEN = VIN, IOUT = 0mA IQ Min Typ. Max Unit 0.8 0.1 -2 0.01 -0.6 V 1 μA 2 % 0.20 %/V 0.6 % 200 150 60 300 200 80 mV ISHDN Input Shutdown Current VEN = 0V, IOUT = 0mA 0.1 1 μA μA ILEAK Input Leakage Current 0.1 1 μA VIL EN Input Logic Low Voltage VEN = 0V, OUT grounded VEN = 0V to 2.0V in 1μs, IOUT = 150mA VIN = [VOUT +1V]VDC + 0.5VppAC, f = 1kHz, IOUT = 50mA VIN = VIN-Min to VIN-Max, VOUT = 1/4 target VOUT VIN = VIN-Min to VIN-Max, VOUT/ROUT = 0.6A VIN = VIN-Min to VIN-Max VIH EN Input Logic High Voltage VIN = VIN-Min to VIN-Max 1.4 IEN EN Input Current VIN = 0V or VIN-Max -1 tST Start-up Time PSRR PSRR (Note 5) ISHORT Short-circuit Current ILIMIT Current limit 60 200 150 μs 65 dB 60 mA 300 mA 0.4 V 1 μA V TSHDN Thermal shutdown threshold 165 °C THYS Thermal shutdown hysteresis 30 140 60 °C θJA Notes: Thermal Resistance Junction-to-Ambient SOT26 (Note 6) DFN2018-6 (Note 7) o C/W 4. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. 5. This specification is guaranteed by design. 6. Test condition for SOT26: Device mounted on FR-4 substrate PC board, with minimum recommended pad layout 7. Test condition for DFN2018-6: Device mounted on FR-4 2-layer board,2oz copper, with minimum recommended pad on top layer and 3 vias to bottom layer. AP7312 Document number: DS35133 Rev. 1 - 2 5 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics Start-Up Time Start-Up Time VIN=5V, No load CIN=COUT1=COUT2=1μF VIN=5V, Both ILOAD=150mA CIN=COUT1=COUT2=1μF NEW PRODUCT VEN=0V to 2V (2V/div) VEN=0V to 2V (2V/div) VOUT2=2.8V (1V/div) VOUT2=2.8V (1V/div) VOUT1=1.8V (1V/div) VOUT1=1.8V (1V/div) Time (40μs/div) Line Transient Response Time (40μs/div) Line Transient Response VIN=3.8V to 4.8V (1V/div) COUT1=COUT2=1μF, Tr=Tf=2μs, Both ILOAD=15mA VIN=3.8V to 4.8V (1V/div) COUT1=COUT2=1μF, Tr=Tf=2μs, Both ILOAD=100mA VOUT1=1.8V (10mV/div) VOUT1=1.8V (10mV/div) VOUT2=2.8V (10mV/div) VOUT2=2.8V (10mV/div) Time (100μs/div) AP7312 Document number: DS35133 Rev. 1 - 2 Time (100μs/div) 6 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) Load Transient Response NEW PRODUCT Load Transient Response ILOAD=10mA to 50mA (50mA/div) ILOAD=10mA to 100mA (100mA/div) VOUT1=1.8V (20mV/div) VOUT1=1.8V (20mV/div) VOUT2=2.8V (20mV/div) VOUT2=2.8V (20mV/div) VIN=VEN=3.8V CIN=COUT1=COUT2=1μF VIN=VEN=3.8V CIN=COUT1=COUT2=1μF Time (100μs/div) EN2 Pin Response Time (100μs/div) EN1 Pin Response VEN1=2V to 0V (2V/div) Both ILOAD=50mA VEN1=2V (2V/div) VEN2=2V (2V/div) VEN2=2V to 0V (2V/div) VOUT2=2.8V (1V/div) VOUT2=2.8V (1V/div) VOUT1=1.8V (1V/div) VOUT1=1.8V (1V/div) Time (400μs/div) Time (400μs/div) AP7312 Document number: DS35133 Rev. 1 - 2 Both ILOAD=50mA 7 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) EN Pin Shutdown Response PSRR vs Frequency VIN=5V, Both ILOAD=50mA 100 1.8V 80 PSRR(dB) NEW PRODUCT VEN=0V to 5V (5V/div) 60 2.8V 40 VOUT2=2.8V (1V/div) 20 VOUT1 =1.8V (1V/div) 0 TA=25°C VIN=3.8V+0.5VppAC COUT1=COUT2=1μF Both ILOAD=50mA 10 10 100 1000 1k 10000 10k 100000 100k 100000 1M 0 Frequency(Hz) Time (100μs/div) Input Quiescent current vs Temperature Input Quiescent current vs Input Voltage 80 Input Quiescent current(μA) Input Quiescent current(μA) 80 60 40 20 TA=25°C VOUT1=1.8V VOUT2=2.8V IOUT=0mA 60 40 20 0 0 3.5 4 4.5 5 Input Voltage(V) AP7312 Document number: DS35133 Rev. 1 - 2 5.5 6 VIN=VEN=3.8V VOUT1=1.8V VOUT2=2.8V IOUT=0mA -50 -25 0 25 50 75 100 125 Temperature(℃ ) 8 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) Line Regulation Line Regulation 0.2 0.04 Output Variation(%) Output Variation(%) 25°C 0.1 0.0 90°C -0.1 -0.2 25°C 0 90°C -0.02 -0.04 2.5 3 3.5 4 4.5 5 5.5 -45°C 0.02 VOUT=1.8V IOUT=1mA 6 VOUT=2.8V IOUT=1mA 3.5 4 Input Voltage(V) 4.5 5 5.5 6 Input Voltage(V) Load Regulation Load Regulation 0.00 0.00 -45°C -45°C Output Variation(%) Output Variation(%) NEW PRODUCT -45°C 25°C -0.05 -0.10 90°C 25°C -0.05 90°C -0.10 VIN=VEN=3.8V VOUT=2.8V VIN=VEN=2.8V VOUT=1.8V -0.15 -0.15 0 25 50 75 100 125 150 Output Current(mA) AP7312 Document number: DS35133 Rev. 1 - 2 9 of 18 www.diodes.com 0 25 50 75 100 Output Current(mA) 125 150 December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) Dropout Voltage vs Output Current Dropout Voltage vs Output Current 250 200 VOUT=3.3V Dropout Voltage(mV) Dropout Voltage(mV) 200 90°C 150 25°C 100 -45°C 50 150 90°C 100 25°C 50 -45°C 0 0 0 25 50 75 100 125 150 0 25 Output Current(mA) 50 75 100 125 150 Output Current(mA) Current limit vs Input Voltage Current limit vs Temperature 500 500 TA=25°C VIN=2.8V 400 Current limit(A) 400 Current limit(A) NEW PRODUCT VOUT=1.8V 300 200 300 200 100 100 0 0 2 3 4 5 6 Document number: DS35133 Rev. 1 - 2 -25 0 25 50 75 100 125 Temperature(℃ ) Input Voltage(V) AP7312 -50 10 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) Short-circuit Current vs Temperature Short Circuit Current vs Input Voltage 100 100 80 -45°C Short-circuit Current(mA) Short Circuit Current (mA) NEW PRODUCT VIN=3.8V 25°C 60 90°C 40 20 80 60 40 20 0 0 2.5 3 3.5 4 4.5 5 Input Voltage(V) AP7312 Document number: DS35133 Rev. 1 - 2 5.5 6 -50 -25 0 25 50 75 100 125 Temperature(℃ ) 11 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Application Note Input Capacitor A 1μF ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The amount of the capacitance may be increased without limit. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires more capacitance. The output capacitor is required to stabilize and improve the transient response of the LDO. The AP7312 is stable with very small ceramic output capacitors. Using a ceramic capacitor value that is at least 1μF with ESR≧10mΩ on the output ensures stability. Higher capacitance values help to improve line and load transient response. The output capacitance may be increased to keep low undershoot and overshoot. Output capacitor must be placed as close as possible to OUT and GND pins. Region of Stable COUT ESR vs. Load Current 100 Unstable Range 10 COUT ESR (Ω) NEW PRODUCT Output Capacitor 1 Stable Range 0.1 CIN=COUT1= COUT2=1μF 0.01 Unstable Range 0.001 0 20 50 100 150 Load Current (mA) No Load Stability Other than external resistor divider, no minimum load is required to keep the device stable. The device will remain stable and regulated in no load condition. ON/OFF Input Operation The AP7312 is turned on by setting the EN pin high, and is turned off by pulling it low. If this feature is not used, the EN pin should be tied to IN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under VIL and VIH. AP7312 Document number: DS35133 Rev. 1 - 2 12 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Application Note (Continued) Current Limit Protection When output current at OUT pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to approximately 300mA to prevent over-current and to protect the regulator from damage due to overheating. Short Circuit Protection NEW PRODUCT When OUT pin is short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 60mA. This feature protects the regulator from over-current and damage due to overheating. Thermal Shutdown Protection Thermal protection disables the output when the junction temperature rises to approximately +165°C, allowing the device to cool down. When the junction temperature reduces to approximately +135°C the output circuitry is enabled again. Depending on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating. Ultra Fast Start-up After enabled, the AP7312 is able to provide full power in as little as tens of microseconds, typically 150µs, without sacrificing low ground current. This feature will help load circuitry move in and out of standby mode in real time, eventually extend battery life for mobile phones and other portable devices. Fast Transient Response Fast transient response LDO can extend battery life. TDMA-based cell phone protocols such as Global System for Mobile Communications (GSM) have a transmit/receive duty factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. In baseband circuits, the load often transitions virtually instantaneously from 100µA to 100mA. To meet this load requirement, the LDO must react very quickly without a large voltage drop or overshoot — a requirement that cannot be met with conventional, general-purpose LDO. The AP7312’s fast transient response from 0 to 150mA provides stable voltage supply for fast DSP and GSM chipset with fast changing load. Low Quiescent Current The AP7312, consuming only around 60µA for all input range, provides great power saving in portable and low power applications. Power Dissipation The device power dissipation and proper sizing of the thermal plane that is connected to the thermal pad is critical to avoid thermal shutdown and ensure reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by: PD = (VIN - VOUT) X IOUT The maximum power dissipation, handled by the device, depends on the maximum junction to ambient thermal resistance, maximum ambient temperature, and maximum device junction temperature, which can be calculated by the equation in the following: PD (max@TA) = AP7312 Document number: DS35133 Rev. 1 - 2 ( +150°C - TA ) R θJA 13 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Ordering Information AP7312- XXYY XX - 7 NEW PRODUCT Output Voltage : VOUT1/VOUT2 1218 : 1.2V / 1.8V 1233 : 1.2V / 3.3V 1525 : 1.5V / 2.5V 1533 : 1.5V / 3.3V 1828 : 1.8V / 2.8V 1830 : 1.8V / 3.0V 1833 : 1.8V / 3.3V 3333 : 3.3V / 3.3V Device Packing FM : DFN2018-6 W6 : SOT26 7 : Tape & Reel Package Code Packaging (Note 8) W6 FM SOT26 DFN2018-6 AP7312-XXYY W6-7 AP7312-XXYY FM-7 Note: Package 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 8. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP7312 Document number: DS35133 Rev. 1 - 2 14 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Marking Information (1) SOT26 ( Top View ) 4 7 5 7 6 XXX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Internal Code NEW PRODUCT XXX YWX 1 2 3 (2) DFN2018-6 ( Top View ) XXX YWX Device AP7312-1218 AP7312-1233 AP7312-1525 AP7312-1533 AP7312-1828 AP7312-1830 AP7312-1833 AP7312-3333 AP7312 Document number: DS35133 Rev. 1 - 2 XXX : Identification code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Internal Code Package SOT26 SOT26 SOT26 SOT26 SOT26 SOT26 SOT26 SOT26 Package DFN2018-6 DFN2018-6 DFN2018-6 DFN2018-6 DFN2018-6 DFN2018-6 DFN2018-6 DFN2018-6 15 of 18 www.diodes.com Identification Code CAS CAZ CA6 CBC CBK CBN CBR CEA December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Package Outline Dimensions (All Dimensions in mm) NEW PRODUCT (1) SOT26 Seating Plane Side View 1.75/1.875 B CL C A CL 0.9/1.1 1.95/2.075 1.3/1.5 Pin #1 0.20 Pin #1 ID CL 6x-0.35 0.2/0.3 CL 1.20 2X0.25 A 0.08 C 0.545/0.605 6X- 0/0.05 0.10 C 0.13Typ (2) DFN2018-6 4x-0.50 6x-0.25 1.600 Land Pattern Recommendation (Unit:mm) 2X- Top View 0.25 B 0.50Typ 0.15/0.25 0.10 C A B Bottom View AP7312 Document number: DS35133 Rev. 1 - 2 16 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR Taping Orientation (Note 9) NEW PRODUCT For DFN2018-6 Note: 9. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf AP7312 Document number: DS35133 Rev. 1 - 2 17 of 18 www.diodes.com December 2010 © Diodes Incorporated AP7312 DUAL 150mA LOW QUIESCENT CURRENT FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). NEW PRODUCT Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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