power-management-pmic

AP2127K-3.3

Full part number: AP2127K-3.3TRG1

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Diodes Incorporated datasheet covers the AP2127K-3.3TRG1 and AP2127K-3.3TRG1-5714B, a 300mA high-speed, low-noise CMOS LDO regulator. The document details fixed and adjustable voltage versions available in SOT-23, SOT-89, and other packages, intended for battery-powered devices like notebooks and motherboards. Key parameters include a wide 2.5V to 6V operating range, ±2% output accuracy, 68dB ripple rejection at 1kHz, 0.1μA standby current, and a 170mV dropout voltage at full load.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 60 µA 90 µA VIN = VOUT+1V, IOUT = 0mA
output voltage — 3.3 V —
output current — 450 mA 450 mA
supply voltage range — 6.5 V 6.5 V
rds on — 60 Ohm — Shutdown Input Voltage Low
operating temperature -40 °C — 85 °C
standby current — 100 nA 1 µA VIN = VOUT+1VVSHUTDOWNin off mode
psrr — 68 dB — AP2127-1.0V to 4.2V, Ripple 1VP-PVIN = VOUT+1V; f = 100Hz
dropout voltage — 1.4 V 1.5 V VOUT = 1.0V, IOUT = 300mA
output noise voltage — 60 µV — TA = +25°C, 10Hz ≤ f ≤ 100kHz, VOUT = 0.8V
output count — 1 —
03 — Alternatives

Closest matches to AP2127K-3.3

TLV758P 2.4× lower quiescent current, 1.9× lower dropout voltage, 1.9× higher operating temperature
AP2112-1.2 10.0× lower standby current, 2.8× lower output voltage, 1.5× lower supply voltage range
L78M05ABV 2.1× higher supply voltage range, 1.9× higher operating temperature, 1.5× higher output voltage
RT9193-33GB 10.0× lower standby current, 8.2× lower dropout voltage, 1.7× higher output noise voltage
L78L05ABD13TR 4.6× higher supply voltage range, 4.5× lower output current, 1.9× higher operating temperature
AZ1117D-3.3TRE1 2.3× higher supply voltage range, 2.2× higher output current, 1.9× higher operating temperature
SPX5205M5-L-5.0 6.7× lower dropout voltage, 5.0× higher output noise voltage, 3.0× lower output current
AZ1117C-3.3 2.3× higher operating temperature, 2.3× higher supply voltage range, 2.2× higher output current
04 — FAQ

Frequently asked questions

What is the dropout voltage when VOUT = 1.0V and IOUT = 300mA?

The dropout voltage is 1.4 V.

What is the maximum operating temperature for the AP2127K-3.3TRG1?

The operating temperature is 85 °C.

What is the output count for the AP2127K-3.3TRG1?

The output count is 1.

What is the output current of the AP2127K-3.3TRG1?

The output current is 450 mA.

What is the output noise voltage at TA = +25°C, 10Hz ≤ f ≤ 100kHz, VOUT = 0.8V?

The output noise voltage is 60 µV.

What is the output voltage of the AP2127K-3.3TRG1?

The output voltage is 3.3 V.

What is the PSRR of the AP2127K-3.3TRG1 when the input voltage ranges from 1.0V to 4.2V with a 1VP-P ripple at VIN = VOUT+1V and a frequency of 100Hz?

The PSRR is 68 dB under the condition of AP2127-1.0V to 4.2V, Ripple 1VP-PVIN = VOUT+1V; f = 100Hz.

What is the quiescent current when VIN = VOUT+1V and IOUT = 0mA?

The quiescent current is 60 µA.

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