AZ1117C-3.3 — Datasheet Summary, Specs & Alternatives

01 — Overview

This Diodes Incorporated datasheet covers the AZ1117C family of low dropout linear regulators, including fixed and adjustable output versions. It defines the scope for USB devices, add-on cards, and automotive applications requiring specific quality standards like AEC-Q100/16949 compliance. Key parameters include a maximum current limit of 1.35A, an output voltage accuracy of ±1%, PSRR of 70dB at 120Hz, and a maximum quiescent current of 6mA. The document details pin assignments across TO252, SOT89, and SOT223 packages while emphasizing compatibility with low ESR ceramic capacitors.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	4 mA	6 mA	I_{OUT} = 0
output voltage	3.27 V	3.3 V	3.33 V	1.5V \leq V_{IN}-V_{OUT} \leq 10V
output current	—	1 A	—	Minimum guaranteed current limit
supply voltage range	—	—	15 V
operating temperature	-20 °C	—	125 °C
standby current	—	4 mA	—	Typical quiescent current at I_OUT = 0
psrr	—	70 dB	—	f = 120Hz, COUT = 22μF(VIN-VOUT) = 3V, IOUT = 300mA
dropout voltage	—	1.2 V	1.3 V	ΔVREF = 1%, IOUT = 0.8A; SOT223
output noise voltage	—	99 µV	—	0.003% of V_OUT at 10Hz to 10kHz, calculated for V_OUT = 3.3V
output count	—	1	—

03 — Alternatives

Closest matches to AZ1117C-3.3

L78M05ABV 2.5× lower output noise voltage, 2.0× lower output current, 1.7× higher dropout voltage

LD1117-3.3 2.8× lower output voltage, 1.2× higher quiescent current, 1.2× higher standby current

AZ1117D-3.3TRE1 1.2× higher quiescent current, 1.2× lower operating temperature, 1.1× higher psrr

L78L05ABD13TR 10.0× lower output current, 2.5× lower output noise voltage, 2.0× higher supply voltage range

TLV758P 4.0× lower supply voltage range, 1.9× lower output noise voltage, 1.7× lower dropout voltage

AMS1117 1.6× lower supply voltage range, 1.2× higher quiescent current, 1.2× higher standby current

AP2112-1.2 3.5× lower supply voltage range, 2.8× lower output voltage, 2.3× lower operating temperature

AP2127K-3.3TRG1 2.3× lower operating temperature, 2.3× lower supply voltage range, 2.2× lower output current

04 — FAQ

Frequently asked questions

What is the dropout voltage for the AZ1117C-3.3 in a SOT223 package when ΔVREF = 1% and IOUT = 0.8A?

The dropout voltage is 1.2 V.

What is the maximum operating temperature?

The maximum operating temperature is 125 °C.

What is the output count for the AZ1117C-3.3?

The output count is 1.

What is the minimum guaranteed current limit for the output current?

The minimum guaranteed current limit for the output current is 1 A.

What is the output noise voltage of the AZ1117C-3.3?

The output noise voltage is 99 µV at 0.003% of V_OUT at 10Hz to 10kHz, calculated for V_OUT = 3.3V.

What is the output voltage of the AZ1117C-3.3 when 1.5V ≤ V_IN - V_OUT ≤ 10V?

The output voltage is 3.3 V.

What is the PSRR of the AZ1117C-3.3 at f = 120Hz, COUT = 22μF(VIN-VOUT) = 3V, IOUT = 300mA?

The PSRR is 70 dB at f = 120Hz, COUT = 22μF(VIN-VOUT) = 3V, IOUT = 300mA.

What is the quiescent current when I_{OUT} = 0?

The quiescent current is 4 mA when I_{OUT} = 0.