AP2112-1.2 — Datasheet Summary, Specs & Alternatives

01 — Overview

This Diodes Incorporated datasheet covers the AP2112, a 600mA CMOS LDO regulator available in fixed voltages of 1.2V to 3.3V. It details electrical characteristics for SOT25, SO-8, and SOT89-5 packages, focusing on applications like laptops and monitors. Key parameters include ±1.5% output accuracy, 600mA minimum continuous current, 250mV dropout at full load, and ultra-low quiescent current of 55µA. The device features enable logic, foldback short protection, and operates from -40°C to +85°C.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	55 µA	80 µA	VIN = 2.5V, IOUT = 0mA
output voltage	—	1.2 V	—	VIN = 2.5V, 1mA ≤ IOUT≤ 30mA
output current	600 mA	—	—	VIN = 2.5V, VOUT = 1.182V to 1.218V
supply voltage range	2.5 V	—	6 V
operating temperature	-40 °C	—	85 °C
standby current	—	10 nA	1 µA	VIN = 2.5V, VENin OFF mode
psrr	—	65 dB	—	Ripple 0.5Vp-pVIN = 2.5V, IOUT = 100mA; f = 100Hz
dropout voltage	—	1 V	1.3 V	IOUT = 10mA
output noise voltage	—	50 µV	—	No Load, 10Hz ≤ f ≤ 100kHz
output count	—	1	—

03 — Alternatives

Closest matches to AP2112-1.2

AP2127K-3.3TRG1 10.0× higher standby current, 2.8× higher output voltage, 1.5× higher supply voltage range

RT9193-33GB 5.9× lower dropout voltage, 2.8× higher output voltage, 2.0× lower output current

TLV758P 10.0× higher standby current, 2.5× higher output voltage, 2.2× lower quiescent current

L78M05ABV 4.2× higher output voltage, 3.2× higher supply voltage range, 2.0× higher dropout voltage

LD1117-3.3 4.2× higher supply voltage range, 2.3× higher operating temperature, 2.0× higher output noise voltage

AZ1117D-3.3TRE1 3.5× higher supply voltage range, 2.8× higher output voltage, 2.0× higher output noise voltage

AZ1117C-3.3 3.5× higher supply voltage range, 2.8× higher output voltage, 2.3× higher operating temperature

L78L05ABD13TR 7.1× higher supply voltage range, 6.0× lower output current, 4.2× higher output voltage

04 — FAQ

Frequently asked questions

What is the dropout voltage when IOUT = 10mA?

The dropout voltage is 1 V at IOUT = 10mA.

What is the maximum operating temperature?

The operating temperature is 85 °C.

What is the output count?

The output count is 1.

What is the output current when VIN = 2.5V and VOUT = 1.182V to 1.218V?

The output current is 600 mA.

What is the output noise voltage under No Load conditions with a frequency range of 10Hz ≤ f ≤ 100kHz?

The output noise voltage is 50 µV.

What is the output voltage when VIN = 2.5V and 1mA ≤ IOUT≤ 30mA?

The output voltage is 1.2 V.

What is the PSRR value when the ripple is 0.5Vp-p, VIN = 2.5V, IOUT = 100mA, and f = 100Hz?

The PSRR is 65 dB.

What is the quiescent current when VIN = 2.5V and IOUT = 0mA?

The quiescent current is 55 µA.