AP7343Q

Document number: DS41595 Rev. 3 - 2

3 of 16

www.diodes.com

April 2022

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AP7343Q

Electrical Characteristics (@TA = +25°C, VIN = VOUT + 1.0V, CIN = COUT = 1.0µF, IOUT = 1.0mA, unless otherwise specified.)

Parameter

Condition

Min

Typ

Max

Unit

Input Voltage

TA = -40°C to +85°C

1.7

—

5.25

V

Output Voltage Accuracy (Note 5)

VOUT(T) ≥ 2.0V, VIN = VOUT(T) + 1V

TA = +25°C

VOUT(T)*

0.99

VOUT(T)

VOUT(T)*

1.01

V

VOUT(T) < 2.0V, VIN = VOUT(T) + 1V

TA = +25°C

VOUT(T) -

20mV

VOUT(T)

VOUT(T) +

20mV

Line Regulation (dVOUT/dVIN/VOUT)

VIN = (VOUT – Nom + 1.0V) to 5.25V, IOUT = 1.0mA

—

0.02

0.1

%/V

Load Regulation

VIN = VOUT – Nom + 1.0V, IOUT = 1mA to 300mA

—

15

30

mV

Quiescent Current (Note 6)

IOUT = 0mA

—

35

60

µA

ISTANDBY

VEN = 0V (Disabled)

—

0.01

1.0

µA

Output Current

—

300

—

—

mA

Fold-back Short Current (Note 7)

VOUT Short to Ground

—

55

—

mA

PSRR (Note 8)

VIN = (VOUT + 1V) VDC + 0.2Vp-pAC

VOUT ≥ 1.8V, IOUT = 30mA

f = 1kHz

—

75

—

dB

Output Noise Voltage (Notes 8 & 9)

BW = 10Hz to 100kHz, IOUT = 30mA

—

60

—

µVrms

Dropout Voltage (Note 10)

IOUT = 300mA (SOT25)

VOUT = 0.9V

—

0.51

0.82

V

1.0V < VOUT ≤ 1.2V

—

0.46

0.72

1.2V < VOUT ≤ 1.4V

—

0.39

0.60

1.4V < VOUT ≤ 1.7V

—

0.35

0.46

1.7V < VOUT ≤ 2.1V

—

0.30

0.41

2.1V < VOUT ≤ 2.5V

—

0.26

0.36

2.5V < VOUT ≤ 3.0V

—

0.25

0.32

3.0V < VOUT ≤ 3.6V

—

0.22

0.31

Output Voltage Temperature

Coefficient

IOUT = 30mA, TA = -40°C to +125°C

—

±30

—

ppm/°C

Thermal Shutdown Threshold

(TSHDN)

—

—

+150

—

°C

Thermal Shutdown Hysteresis

(THYS)

—

—

+20

—

°C

EN Input Low Voltage

—

0

—

0.5

V

EN Input High Voltage

—

1.3

—

5.25

V

EN Input Leakage

VEN = 0V, VIN = 5.0V or VEN = 5.0V, VIN = 0V

-1.0

—

+1.0

µA

On Resistance of N-Channel for Auto-

Discharge (Note 11)

VIN = 4.0V, VEN = 0V (Disabled)

—

30

—

Ω

Thermal Resistance Junction to

Ambient (

JA)

SOT25

—

179

—

°C/W

Thermal Resistance Junction to Case

(

JC)

SOT25

—

52

—

Notes:

5. Potential multiple grades based on following output voltage accuracy.

6. Quiescent current defined here is 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. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.

11. AP7343Q has two options for output, built-in discharge and non-discharge.