AP7343 Description Pin Assignments - Diodes Incorporated

1 AP7343 Document number: DS37952 Rev. 9 - 2 1 of 19 January 2021 Diodes Incorporated AP7343 300mA HIGH PSRR LOW NOISE LDO WITH ENABLE Description The AP7343 is a low dropout regulator with high output voltage accuracy, low RDS(ON), high PSRR, low output noise, and low quiescent current. This regulator is based on a CMOS process. The AP7343 includes a voltage reference, error amplifier, current limit circuit, and an enable input to turn it on and off. With the integrated resistor network fixed output voltage versions can be delivered. With its low power consumption and line and load transient response, the AP7343 is well suited for low-power handheld communication equipment. The AP7343 is packaged in the X2-DFN1010-4 (Type B) and SOT25 packages, allowing for the smallest footprint and a dense PCB layout. Features Low VIN and Wide VIN Range: to Guarantee Output Current: 300mA VOUT Accuracy 1% Ripple Rejection 75dB at 1kHz Low Output Noise, 60 Vrms from 10Hz to 100kHz Quiescent Current as Low as 35 A VOUT Fixed to Moisture Sensitivity: Level 1 Per J-STD-020 Terminals: SOT25: Finish - Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 X2-DFN1010-4 (Type B): Finish - NiPdAu over Copper Leads, Solderable per MIL-STD-202, Method 208 Weight: SOT25: grams (Approximate) X2-DFN1010-4 (Type B): grams (Approximate) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen- and Antimony-Free.

2 Green Device (Note 3) For automotive applications requiring specific change control ( parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. Pin Assignments PIN1 VOUT, PIN2 GND, PIN3 EN, PIN4 VIN (Top View) SOT25 Applications Smart Phone/Tablet RF Supply Cameras Portable Video Portable Media Player Wireless Adapter Wireless Communication Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See for more information about Diodes Incorporated s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. EP (Top View) (Bottom View) X2-DFN1010-4 (Type B) NCVOUTVINGNDEN53214 AP7343 Document number: DS37952 Rev.

3 9 - 2 2 of 19 January 2021 Diodes Incorporated AP7343 Typical Applications Circuit AP7343 VINENGNDVOUTVINVOUTCIN 1 FCOUT1 F Pin Descriptions Pin Number Pin Name Function X2-DFN1010-4 (Type B) SOT25 1 5 VOUT Power Output Pin 2 2 GND Ground 3 3 EN Enable Pin This pin should be driven either high or low and must not be floating. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode 4 1 VIN Power Input Pin 4 NC No connection EP Exposed Pad In PCB layout, prefer to use large copper area to cover this pad for better thermal dissipation, then connect this area to GND or leave it open. However, do not use it as GND electrode function alone Functional Block Diagram GNDVOUTVINENC urrent Limit VREFT hermal Shutdown GNDVOUTVINENC urrent Limit VREFT hermal Shutdown AP7343D (With Discharge) AP7343 (Without Discharge) AP7343 Document number: DS37952 Rev.

4 9 - 2 3 of 19 January 2021 Diodes Incorporated AP7343 Absolute Maximum Ratings (Note 4) (@ TA = +25 C, unless otherwise specified.) Symbol Parameter Ratings Unit ESD HBM Human Body Mode ESD Protection > 2 kV ESD MM Machine Mode ESD Protection > 200 V VIN Input Voltage V VEN Input Voltage for EN Pin V VOUT Output Voltage to VIN + V IOUT Output Current 400 mA PD Power Dissipation 400 mW TA Operating Ambient Temperature -40 to +85 C TJ Operating Junction Temperature +125 C TSTG Storage Temperature -55 to +125 C Notes: 4. Stresses beyond those listed under Absolute Maximum Ratings can cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended period may affect device reliability. Ratings apply to ambient temperature at +25 C. The JEDEC High-K board design used to derive this data was a 2 inch 2 inch multilayer board with 1oz.

5 Internal power and ground planes and 2oz. copper traces on the top and bottom of the board. Recommended Operating Conditions (@ TA = +25 C, unless otherwise specified.) Symbol Parameter Min Max Unit VIN Input Voltage V IOUT Output Current 0 300 mA TA Operating Ambient Temperature -40 +85 C AP7343 Document number: DS37952 Rev. 9 - 2 4 of 19 January 2021 Diodes Incorporated AP7343 Electrical Characteristics (@ TA = +25 C, VIN = VOUT + , CIN = COUT = F, IOUT = , unless otherwise specified.) Parameter Condition Min Typ Max Unit Input Voltage TA = -40 C to +85 C V Output Voltage Accuracy (Note 11) VOUT(T) , VIN = VOUT(T)+1V TA = +25 C VOUT(T)* VOUT(T) VOUT(T)* V VOUT(T) < , VIN = VOUT(T)+1V TA = +25 C VOUT(T)-20mV VOUT(T) VOUT(T)+ 20mV Line Regulation (dVOUT/dVIN/VOUT) VIN = (VOUT Nom + ) to , IOUT = %/V Load Regulation VIN = VOUT - Nom + , IOUT = 1mA to 300mA 15 30 mV Quiescent Current (Note 6) IOUT = 0mA 35 60 A ISTANDBY VEN = 0V (Disabled) A Output Current 300 mA Fold-back Short Current (Note 7) VOUT Short to Ground 55 mA PSRR (Note 8) VIN = (VOUT+1V) VDC + , VOUT , IOUT = 30mA f = 1kHz 75 dB Output Noise Voltage (Note 8) (Note 9) BW = 10Hz to 100kHz, IOUT = 30mA 60 Vrms Dropout Voltage (Note 5) IOUT = 300mA (X2-DFN1010-4 (Type B))

6 VOUT = V < VOUT < VOUT < VOUT < VOUT < VOUT < VOUT < VOUT IOUT = 300mA (SOT25) VOUT = V < VOUT < VOUT < VOUT < VOUT < VOUT < VOUT < VOUT Output Voltage Temperature Coefficient IOUT = 30mA, TA = -40 C to +85 C 30 ppm/ C Thermal Shutdown Threshold (TSHDN) +150 C Thermal Shutdown Hysteresis (THYS) +20 C EN Input Low Voltage 0 V EN Input High Voltage V EN Input Leakage VEN = 0, VIN = or VEN = , VIN = 0V + A On Resistance of N-Channel for Auto-Discharge (Note 10) VIN = , VEN = 0V (Disabled) 30 Thermal Resistance Junction to Ambient ( JA) X2-DFN1010-4 (Type B) 237 C/W SOT25 179 Thermal Resistance Junction to Case ( JC) X2-DFN1010-4 (Type B) 96 SOT25 52 Notes: 5. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.

7 6. Quiescent current is defined here as the difference in current between the input and the output. 7. Short circuit current is measured with VOUT pulled to GND. 8. This specification is guaranteed by design. 9. To make sure lowest environment noise minimizes the influence on noise measurement. 10. AP7343 has 2 options for output, built-in discharge and non-discharge. 11. Potential multiple grades based on following output voltage accuracy. AP7343 Document number: DS37952 Rev. 9 - 2 5 of 19 January 2021 Diodes Incorporated AP7343 Typical Characteristics Voltage V OUT(V)Output Current I OUT(mA)Output Voltage vs Output CurrentVOUT= Voltage V OUT(V)Output Current I OUT(mA)Output Voltage vs Output CurrentVOUT= Voltage V OUT(V)Output Current I OUT(mA)Output Voltage vs Output CurrentVOUT= Voltage V OUT (V)Input Voltage V IN (V)Output Voltage vs. Input VoltageVOUT= Voltage V OUT (V)Input Voltage V IN (V)Output Voltage vs.

8 Input VoltageVOUT= Voltage V OUT (V)Input Voltage V IN (V)Output Voltage vs. Input VoltageVOUT= VIN= VIN=5V VIN= VIN= VIN=5V VIN= VIN= VIN=5V VIN= AP7343 Document number: DS37952 Rev. 9 - 2 6 of 19 January 2021 Diodes Incorporated AP7343 Typical Characteristics (continued) 0510152025303540012345 Supply Current I SS ( A)Input Voltage V IN (V)Supply Current vs. Input VoltageVOUT= Current I SS ( A)Input Voltage V IN (V)Supply Current vs. Input VoltageVOUT= Current I SS ( A)Input Voltage V IN (V)Supply Current vs. Input VoltageVOUT= OUT (V)Temperature ( C)Output Voltage Voltage vs TemperatureVOUT= OUT (V)Temperature ( C)Output Voltage Voltage vs TemperatureVOUT= OUT (V)Temperature ( C)Output Voltage Voltage vs TemperatureVOUT= Output Voltage vs. Temperature Output Voltage vs. Temperature Output Voltage vs. Temperature AP7343 Document number: DS37952 Rev. 9 - 2 7 of 19 January 2021 Diodes Incorporated AP7343 Typical Characteristics (continued) 0501001502002503003504000501001502002503 00 Dropout Voltage V DIF (mV)Output Current I OUT (mA)Dropout Voltage vs.

9 Output CurrentVOUT= 25C-40C 85C050100150200250300050100150200250300 Dropout Voltage V DIF (mV)Output Current I OUT (mA)Dropout Voltage vs. Output CurrentVOUT= 25C-40C 85C050100150200250300050100150200250300 Dropout Voltage V DIF (mV)Output Current I OUT (mA)Dropout Voltage vs. Output CurrentVOUT= 25C-40C 85C0204060801001201001000100001000001000 000 Ripple Rejection RR (dB)Frequency f (Hz)Ripple Rejection vs. FrequencyVOUT= Rejection RR (dB)Frequency f (Hz)Ripple Rejection vs. FrequencyVOUT= Rejection RR (dB)Frequency f (Hz)Ripple Rejection vs. FrequencyVOUT= 25 C -40 C 85 C 25 C -40 C 85 C IOUT=1mA IOUT=30mA IOUT=150mA IOUT=1mA IOUT=30mA IOUT=150mA IOUT=1mA IOUT=30mA IOUT=150mA 25 C -40 C 85 C AP7343 Document number: DS37952 Rev. 9 - 2 8 of 19 January 2021 Diodes Incorporated AP7343 Typical Characteristics (continued) Line Transient Response Waveforms (IOUT = 30mA, tR = tF = 5 s, CIN = None, COUT1 = COUT2 = 1 F, TA = +25 C) Rejection RR(dB)Input VoltageV IN(V)Ripple Rejection vs.

10 Input VoltageVOUT= Rejection RR(dB)Input VoltageV IN(V)Ripple Rejection vs. Input VoltageVOUT= VOUT = Time t ( s) Output Voltage Input Voltage 0 20 40 60 80 100 Output Voltage V OUT (V) 5 4 3 Input Voltage V IN (V) VOUT = Time t ( s) Output Voltage Input Voltage 0 20 40 60 80 100 Output Voltage V OUT (V) 5 4 3 Input Voltage V IN (V) VOUT = Time t ( s) Output Voltage Input Voltage 0 20 40 60 80 100 Output Voltage V OUT (V) 5 4 3 Input Voltage V IN (V) AP7343 Document number: DS37952 Rev. 9 - 2 9 of 19 January 2021 Diodes Incorporated AP7343 Typical Characteristics (continued) Load Transient Response Waveforms (VIN = VOUT+1V, CIN = 1 F, TA = +25 C) VOUT = Time t ( s) Output Voltage Output Current 50mA 100mA 0 80 160 240 320 400 Output Voltage V OUT (V) 150 100 50 0 COUT=1 F Output Current I OUT (mA) Time t ( s) Output Voltage Output Current 50mA 100mA 0 80 160 240 320 400 Output Voltage V OUT (V ) 150 100 50 0 COUT= F Output Current I OUT (mA) VOUT = Time t ( s) Output Current 50mA 100mA 0 80 160 240 320 400 Output Voltage V OUT (V) 150 100 50 0 COUT=1 F Output Current I OUT (mA) VOUT = Output Voltage Time t ( s)