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Mingjiada Supply ADI ADP2370 And ADP2371 800MA Low Quiescent Current Buck Regulator

In portable devices, battery-powered systems and low-power industrial terminals, the quiescent current of power management ICs directly affects standby power consumption and battery life. Mingjiada Electronics has long supplied the 【ADI】ADP2370/ADP2371 series of 800 mA low-quiescent-current step-down regulators, providing reliable power conversion solutions for designs where power consumption, efficiency and board space are critical considerations.

The 【ADI】ADP2370/ADP2371 are both high-efficiency, low-quiescent current, 800 mA step-down DC-DC converters, housed in a compact 8-pin, 3 mm × 3 mm LFCSP (QFN) package. The entire solution requires only three small external components. The step-down regulators utilise a proprietary high-speed current-mode, fixed-frequency PWM control scheme, delivering excellent stability and transient response. These devices incorporate a highly efficient synchronous rectifier topology, thereby eliminating the need for an external rectifier.
The ADP2370 and ADP2371 offer multiple options for setting the operating frequency. These devices can either be synchronised to an external clock ranging from 600 kHz to 1.2 MHz, or forced to operate at 600 kHz or 1.2 MHz via the FSEL pin. Where noise performance is more critical than efficiency, the ADP2370/ADP2371 can be forced to operate in PWM mode (FPWM).
Key Features at a Glance:
ADP2370 – High-voltage, 1.2 MHz/600 kHz, 800 mA, low quiescent current step-down regulator
ADP2371 – High-voltage, 1.2 MHz/600 kHz, 800 mA, low quiescent current step-down regulator with fast output discharge capability

ADP2370 | ADP2371 Key Specifications:
Input voltage range: 3.2 V to 15 V, output current: 800 mA
Quiescent current of less than 14 µA in Power Save Mode (PSM)
Efficiency: >90%
Force PWM pin (SYNC), 600 kHz/1.2 MHz frequency pin (FSEL)
Fixed outputs: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5 V and adjustable options
Duty cycle capability: 100%
Initial accuracy: ±1%
Low shutdown current: <1.2 µA
Quick Output Discharge (QOD) option (ADP2371)
Synchronisable with an external clock
8-pin, 0.75 mm × 3 mm × 3 mm LFCSP (QFN) package

Typical Applications
The ADP2370/ADP2371 are suitable for a wide range of low-power, battery-powered and space-constrained applications, including:
Portable electronic devices: handheld terminals, portable instruments, wearable devices
Battery-powered systems: wireless sensor nodes, remote monitoring terminals
Industrial control: low-power PLC modules, sensor power supplies, field instruments
Medical electronics: portable medical monitoring devices, low-power diagnostic instruments
Communications and IoT: wireless modules, IoT terminals, smart meters
Consumer electronics: set-top box auxiliary power supplies, smart home terminals

Availability Information
Shenzhen Mingjiada Electronics Co., Ltd. — a long-standing distributor of the ADI product range — maintains a stock of ADP2370 | ADP2371 series low-quiescent-current step-down regulators, including but not limited to the following:
ADP2370ACPZ-1.2
ADP2370ACPZ-1.5
ADP2370ACPZ-1.8
ADP2370ACPZ-3.0
ADP2370ACPZ-5.0
ADP2370ACPZ
ADP2371ACPZ-1.2
ADP2371ACPZ-1.8
ADP2371ACPZ-3.3
ADP2371ACPZ

Mingjiada Electronics supports sample requests, small-batch purchases and full-reel supply. To confirm specific part numbers, stock levels and real-time prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.