AP2127
Full part number: AP2127-3.3
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the AP2127 does
The AP2127 Series are 300mA high-speed, extremely low noise CMOS LDO regulators. This family includes fixed voltage versions from 1.0V to 4.75V plus an adjustable option ranging from 0.8V to 5.5V, available in SOT-23, SOT-23-3, SOT-23-5, and SOT-89 packages. Key specifications include a wide operating voltage of 2.5V to 6V, high output accuracy of ±2%, and a low dropout voltage of 170mV at 300mA for 3.3V output. The device features low quiescent current of 60μA typical and low standby current of 0.1μA. Engineers typically use these regulators in battery-powered devices, datacom equipment, and notebook computers where low noise and compact packaging are essential.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 60 µA | 90 µA | VIN = VOUT+1V, IOUT = 0mA; iq; Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 5 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| output voltage | — | 3.3 V | — | Diodes datasheet, p. 1 | |
| output current | 300 mA | 400 mA | — | VIN- VOUT = 1VVOUT = 0.98 x VOUT; iout(max); Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 5 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| supply voltage range | 2.5 V | — | 6 V | vin; Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 4 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| operating temperature | -40 °C | — | 85 °C | ta; Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 4 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| standby current | — | 100 nA | 1 µA | VIN = VOUT+1VVSHUTDOWNin off mode; istd; Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 5 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| psrr | — | 68 dB | — | f = 100Hz; psrr; Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.) | Diodes datasheet, p. 5 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
| output count | — | 1 | — | Diodes datasheet, p. 5 — Recommended Operating Conditions (@T_A = +25°C, unless otherwise speci… |
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Frequently asked questions
What is the operating temperature (ta) for the AP2127-3.3?
The operating temperature (ta) is 85 °C.
What is the output count of the AP2127-3.3?
The output count is 1.
What is the output current (iout(max)) when VIN - VOUT = 1V and VOUT = 0.98 x VOUT?
The output current is 400 mA.
What is the output voltage of the AP2127-3.3?
The output voltage is 3.3 V.
What is the PSRR at f = 100Hz under Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.)?
The PSRR is 68 dB at f = 100Hz under Recommended Operating Conditions (@T_A = +25°C, unless otherwise specified.).
What is the quiescent current (iq) of the AP2127-3.3?
The quiescent current is 60 µA when VIN = VOUT+1V and IOUT = 0mA.
What is the standby current (Istd) when VIN = VOUT+1V and VSHUTDOWN is in off mode?
The standby current is 100 nA.
What is the supply voltage range (Vin) under Recommended Operating Conditions?
The supply voltage range is 6 V.